Hydrogen injection control method and device, computer device and storage medium

Abstract

The application relates to a hydrogen injection control method and device, computer equipment, a storage medium and a computer program product. The method comprises the following steps: in a current lifting phase, a driving voltage provided by a power supply device to a hydrogen injector is controlled to be turned on, and the driving voltage is controlled to be turned off when the time length corresponding to the current lifting phase reaches; in a peak current oscillation phase, the driving voltage is controlled to be alternately turned on and off according to a preset peak low time length and a preset peak high time length until the time length corresponding to the peak current oscillation phase is reached; in a current maintaining phase, the driving voltage is controlled to be turned off for a preset switching time length, and the driving voltage is controlled to be alternately turned on and off according to the duration of the current maintaining phase, a preset maintaining low time length and a preset maintaining high time length until the duration of the current maintaining phase is reached, and the hydrogen injector sprays hydrogen gas matching the hydrogen gas demand. The method can improve the hydrogen injection control efficiency.

Description

Technical Field

[0001] This application relates to the field of automotive engine electronic control technology, and in particular to a hydrogen injection control method, device, computer equipment, storage medium, and computer program product. Background Technology

[0002] In the field of new energy, fuel cell vehicles use hydrogen as fuel. The hydrogen injector is one of the important control actuators in the hydrogen system. High-precision closed-loop control of the hydrogen injector is required to accurately inject hydrogen into the fuel cell stack, thereby ensuring that the hydrogen pressure at the anode of the stack is stably higher than the air pressure at the cathode, so as to complete the electrochemical reaction efficiently and smoothly.

[0003] Existing hydrogen injection control methods often employ complex driver chips to control the hydrogen injector's hydrogen injection. However, this method suffers from high costs due to the expensive driver chips, complex control methods, and low hydrogen injection control efficiency. Summary of the Invention

[0004] Therefore, it is necessary to address the problem of low efficiency in traditional hydrogen injection control by providing a hydrogen injection control method, apparatus, computer equipment, computer-readable storage medium, and computer program product that can improve the efficiency of hydrogen injection control.

[0005] In a first aspect, this application provides a hydrogen injection control method. The control method includes, upon receiving an injection command, sequentially executing a current boost phase, a peak current oscillation phase, and a current maintenance phase. The method includes:

[0006] During the current boost phase, the power supply equipment is turned on to provide the driving voltage to the hydrogen injector. When the corresponding duration of the current boost phase is reached, the driving voltage is turned off so that the current of the hydrogen injector reaches the peak current.

[0007] During the peak current oscillation phase, the driving voltage is controlled to alternately open and close according to the preset low peak duration and the preset high peak duration until the duration corresponding to the peak current oscillation phase is reached, so that the current of the hydrogen injector during the peak current oscillation phase is the peak oscillation current.

[0008] During the current sustaining phase, the drive voltage is controlled to close for a preset switch duration. Based on the hydrogen demand and flow rate, the duration of the current sustaining phase is determined. According to the duration of the current sustaining phase, the preset low-level sustaining duration, and the preset high-level sustaining duration, the drive voltage is controlled to alternately open and close until the duration of the current sustaining phase is reached. This ensures that the current of the hydrogen injector during the peak current oscillation phase is a low-value oscillation current. Under the action of the peak current, peak oscillation current, and low-value oscillation current, the hydrogen injector injects hydrogen that matches the hydrogen demand, with the low-value oscillation current being less than the peak oscillation current.

[0009] In one embodiment, controlling the drive voltage to alternately turn on and off according to a preset low-peak duration and a preset high-peak duration includes:

[0010] The number of oscillations of the peak oscillation current is determined based on the duration of the peak current oscillation phase, the preset low peak duration, and the preset high peak duration.

[0011] The driving voltage is controlled to alternately open and close based on the preset peak low duration, preset peak high duration, and the number of oscillations of the peak oscillation current.

[0012] In one embodiment, the peak oscillation current oscillates at least once; based on a preset low peak duration, a preset high peak duration, and the number of oscillations of the peak oscillation current, controlling the drive voltage to alternately open and close includes:

[0013] For each oscillation in at least one oscillation, control the drive voltage to enable a preset peak low time so that the peak oscillation current decreases from the peak current to the preset low peak current.

[0014] When the preset low peak duration is reached, the control drive voltage is turned off for the preset high peak duration, so that the peak oscillation current rises from the preset low peak current to the peak current.

[0015] In one embodiment, the drive voltage is controlled to alternately turn on and off based on the duration of the current sustaining phase, a preset sustaining low-level duration, and a preset sustaining high-level duration, including:

[0016] The number of oscillations of the low-value oscillation current is determined based on the duration of the current maintenance phase, the preset duration of maintaining the low position, and the preset duration of maintaining the high position.

[0017] The driving voltage is controlled to alternately open and close based on the preset duration of maintaining a low position, the preset duration of maintaining a high position, and the number of oscillations of the low-value oscillation current.

[0018] In one embodiment, the number of oscillations of the low-value oscillation current includes at least one; based on a preset low-level maintenance duration, a preset high-level maintenance duration, and the number of oscillations of the low-value oscillation current, controlling the drive voltage to alternately turn on and off includes:

[0019] For each oscillation in at least one oscillation, the control drive voltage is turned on for a preset low-level duration so that the low-value oscillation current decreases from the preset high holding current to the preset low holding current.

[0020] When the preset low-level maintenance time is reached, the control drive voltage is turned off for the preset high-level maintenance time, so that the low-value oscillation current rises from the preset low maintenance current to the preset high maintenance current.

[0021] In one embodiment, the duration of the current sustaining phase is determined based on the hydrogen demand and hydrogen flow rate, including:

[0022] The duration of the hydrogen nozzle in the hydrogen injector is determined based on the hydrogen demand and hydrogen flow rate.

[0023] Based on the duration of the hydrogen nozzle's operation, the duration of the current sustaining phase can be obtained by referring to a table.

[0024] Secondly, this application also provides a hydrogen injection control device. The control device, upon receiving an injection command, sequentially executes a current boost phase, a peak current oscillation phase, and a current maintenance phase. The device includes:

[0025] The current boost module is used to control the driving voltage supplied to the hydrogen injector by the power supply equipment during the current boost phase, and to control the driving voltage to be turned off when the corresponding duration of the current boost phase is reached, so that the current of the hydrogen injector reaches the peak current.

[0026] The peak current oscillation module is used to control the drive voltage to alternately open and close according to the preset low peak duration and the preset high peak duration during the peak current oscillation phase, until the duration corresponding to the peak current oscillation phase is reached, so that the current of the hydrogen injector during the peak current oscillation phase is the peak oscillation current.

[0027] The current sustaining module is used to control the drive voltage to close the preset switch for a certain duration during the current sustaining phase. It also determines the duration of the current sustaining phase based on the hydrogen demand and flow rate. Based on the duration of the current sustaining phase, the preset low-level sustaining duration, and the preset high-level sustaining duration, the drive voltage is controlled to alternately open and close until the duration of the current sustaining phase is reached. This ensures that the current of the hydrogen injector during the peak current oscillation phase is a low-value oscillation current. Under the action of the peak current, peak oscillation current, and low-value oscillation current, the hydrogen injector injects hydrogen that matches the hydrogen demand, with the low-value oscillation current being less than the peak oscillation current.

[0028] Thirdly, this application also provides a computer device. The computer device includes a memory and a processor, the memory storing a computer program, and the processor executing the computer program to perform the following steps:

[0029] During the current boost phase, the power supply equipment is turned on to provide the driving voltage to the hydrogen injector. When the corresponding duration of the current boost phase is reached, the driving voltage is turned off so that the current of the hydrogen injector reaches the peak current.

[0030] During the peak current oscillation phase, the driving voltage is controlled to alternately open and close according to the preset low peak duration and the preset high peak duration until the duration corresponding to the peak current oscillation phase is reached, so that the current of the hydrogen injector during the peak current oscillation phase is the peak oscillation current.

[0031] During the current sustaining phase, the control drive voltage is turned off for a preset switch duration. The duration of the current sustaining phase is determined based on the hydrogen demand and flow rate. The drive voltage is then alternately turned on and off based on the duration of the current sustaining phase, the preset low-level sustaining duration, and the preset high-level sustaining duration until the duration of the current sustaining phase is reached. This ensures that the current of the hydrogen injector during the peak current oscillation phase is a low-value oscillation current. Under the action of the peak current, peak oscillation current, and low-value oscillation current, the hydrogen injector injects hydrogen that matches the hydrogen demand, with the low-value oscillation current being less than the peak oscillation current.

[0032] Fourthly, this application also provides a computer-readable storage medium. The computer-readable storage medium stores a computer program thereon, which, when executed by a processor, performs the following steps:

[0033] During the current boost phase, the power supply equipment is turned on to provide the driving voltage to the hydrogen injector. When the corresponding duration of the current boost phase is reached, the driving voltage is turned off so that the current of the hydrogen injector reaches the peak current.

[0034] During the peak current oscillation phase, the driving voltage is controlled to alternately open and close according to the preset low peak duration and the preset high peak duration until the duration corresponding to the peak current oscillation phase is reached, so that the current of the hydrogen injector during the peak current oscillation phase is the peak oscillation current.

[0035] During the current sustaining phase, the control drive voltage is turned off for a preset switch duration. The duration of the current sustaining phase is determined based on the hydrogen demand and flow rate. The drive voltage is then alternately turned on and off based on the duration of the current sustaining phase, the preset low-level sustaining duration, and the preset high-level sustaining duration until the duration of the current sustaining phase is reached. This ensures that the current of the hydrogen injector during the peak current oscillation phase is a low-value oscillation current. Under the action of the peak current, peak oscillation current, and low-value oscillation current, the hydrogen injector injects hydrogen that matches the hydrogen demand, with the low-value oscillation current being less than the peak oscillation current.

[0036] Fifthly, this application also provides a computer program product. The computer program product includes a computer program that, when executed by a processor, performs the following steps:

[0037] During the current boost phase, the power supply equipment is turned on to provide the driving voltage to the hydrogen injector. When the corresponding duration of the current boost phase is reached, the driving voltage is turned off so that the current of the hydrogen injector reaches the peak current.

[0038] During the peak current oscillation phase, the driving voltage is controlled to alternately open and close according to the preset low peak duration and the preset high peak duration until the duration corresponding to the peak current oscillation phase is reached, so that the current of the hydrogen injector during the peak current oscillation phase is the peak oscillation current.

[0039] During the current sustaining phase, the control drive voltage is turned off for a preset switch duration. The duration of the current sustaining phase is determined based on the hydrogen demand and flow rate. The drive voltage is then alternately turned on and off based on the duration of the current sustaining phase, the preset low-level sustaining duration, and the preset high-level sustaining duration until the duration of the current sustaining phase is reached. This ensures that the current of the hydrogen injector during the peak current oscillation phase is a low-value oscillation current. Under the action of the peak current, peak oscillation current, and low-value oscillation current, the hydrogen injector injects hydrogen that matches the hydrogen demand, with the low-value oscillation current being less than the peak oscillation current.

[0040] The aforementioned hydrogen injection control method, apparatus, computer equipment, storage medium, and computer program product sequentially execute a current boost phase, a peak current oscillation phase, and a current sustaining phase upon receiving an injection command. During the current boost phase, the driving voltage supplied to the hydrogen injector by the power supply equipment is turned on, and the driving voltage is turned off when the corresponding duration of the current boost phase is reached. During the peak current oscillation phase, the driving voltage is alternately turned on and off according to a preset low peak duration and a preset high peak duration until the corresponding duration of the peak current oscillation phase is reached. During the current sustaining phase, the driving voltage is turned off for a preset switching duration, and the driving voltage is alternately turned on and off according to the duration of the current sustaining phase, a preset low sustaining duration, and a preset high sustaining duration until the duration of the current sustaining phase is reached. This hydrogen injection control method ensures that during the current boost phase, the hydrogen injector current reaches its peak current, facilitating rapid opening of the hydrogen injector; during the peak current oscillation phase, the hydrogen injector current is at its peak oscillation current, which is conducive to a stable entry into the peak current oscillation phase; during the current maintenance phase, the hydrogen injector current is at a low oscillation current, which is conducive to a stable entry into other phases; at the same time, by controlling the driving voltage of the hydrogen injector in stages, the injection of hydrogen that matches the hydrogen demand is achieved. The control method is simple and easy to implement, improving the efficiency of hydrogen injection control. Attached Figure Description

[0041] Figure 1 This is a diagram illustrating the application environment of a hydrogen injection control method in one embodiment.

[0042] Figure 2 This is a flowchart illustrating a hydrogen injection control method in one embodiment;

[0043] Figure 3 This is a schematic diagram of a sub-process of S204 in one embodiment;

[0044] Figure 4 This is a schematic diagram of a sub-process of S304 in one embodiment;

[0045] Figure 5 This is a schematic diagram of a sub-process of S206 in one embodiment;

[0046] Figure 6 This is a schematic diagram of a sub-process of S504 in one embodiment;

[0047] Figure 7 This is a schematic diagram of the driving voltage and current at multiple stages in one embodiment;

[0048] Figure 8 This is a schematic diagram of the driving voltage and current in a hydrogen injection control method in one embodiment;

[0049] Figure 9This is a structural block diagram of a hydrogen injection control device in one embodiment;

[0050] Figure 10 This is an internal structural diagram of a computer device in one embodiment. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0052] The hydrogen injection control method provided in this application embodiment can be applied to, for example... Figure 1 In the application environment shown, data interaction occurs between terminal 102, power supply device 104, and hydrogen injector 106. The hydrogen injection control method provided in this embodiment can be executed by terminal 102 or the server alone, or by terminal 102 and the server in collaboration. Taking terminal 102 alone as an example: after receiving the injection command, terminal 102 sequentially executes the current boost phase, the peak current oscillation phase, and the current maintenance phase. In the current boost phase, the driving voltage supplied to the hydrogen injector 106 by power supply device 104 is turned on. When the corresponding duration of the current boost phase is reached, the driving voltage is turned off, so that the current of the hydrogen injector 106 reaches the peak current. In the peak current oscillation phase, the driving voltage is alternately turned on and off according to the preset low peak duration and the preset high peak duration, until the corresponding duration of the peak current oscillation phase is reached, so that the current of the hydrogen injector 106 in the peak current oscillation phase is the peak oscillation current. In the current maintenance phase, the driving voltage is turned off... The system sets a preset switch duration and determines the duration of the current maintenance phase based on the hydrogen demand and flow rate. Based on the duration of the current maintenance phase, the preset low-level maintenance duration, and the preset high-level maintenance duration, the drive voltage is controlled to alternately open and close until the duration of the current maintenance phase is reached. This ensures that the current of the hydrogen injector 106 during the peak current oscillation phase is a low-value oscillation current. Under the influence of the peak current, peak oscillation current, and low-value oscillation current, the hydrogen injector 106 injects hydrogen matching the hydrogen demand, with the low-value oscillation current being less than the peak oscillation current. The terminal 102 can be, but is not limited to, various personal computers, laptops, smartphones, tablets, IoT devices, and portable wearable devices. IoT devices can include smart speakers, smart TVs, smart air conditioners, and smart vehicle devices. Portable wearable devices can include smartwatches, smart bracelets, and head-mounted devices. The server can be implemented using a standalone server or a server cluster composed of multiple servers.

[0053] In one embodiment, such as Figure 2As shown, a hydrogen injection control method is provided, which can be applied to... Figure 1 Taking terminal 102 as an example, after receiving the injection command, it sequentially executes the current boost phase, peak current oscillation phase, and current maintenance phase, including the following steps:

[0054] S202, during the current boost phase, control the power supply equipment to turn on the driving voltage supplied to the hydrogen injector, and when the corresponding duration of the current boost phase is reached, control the power supply equipment to turn off the driving voltage so that the current of the hydrogen injector reaches the peak current.

[0055] Upon receiving an injection command, the terminal controls the hydrogen injector to perform one hydrogen injection cycle. The hydrogen injection cycle includes a current boost phase, a peak current oscillation phase, and a current sustaining phase. The terminal executes these phases sequentially upon receiving the injection command.

[0056] A power supply device is a device that provides voltage. In some embodiments, the power supply device is a vehicle battery. The power supply device provides the driving voltage for the hydrogen injector. In some embodiments, when the power supply device cannot provide the driving voltage required by the hydrogen injector, a boost circuit provides the driving voltage to the hydrogen injector.

[0057] The duration of the current boost phase is specified based on the requirements of the hydrogen injector. The current boost phase is the duration during which the power supply equipment provides the drive voltage to the hydrogen injector. During the current boost phase, the terminal control activates the power supply equipment to provide the drive voltage to the hydrogen injector; when the duration of the current boost phase is reached, the control shuts off the drive voltage.

[0058] The peak current is equal to the driving voltage divided by the load resistance of the hydrogen injector. During the time period corresponding to the driving voltage turning on and the current rise phase (i.e., the current rise phase), due to the inductance, the hydrogen injector current rises from 0 to the peak current. When the time corresponding to the current rise phase is reached, the driving voltage is turned off, and the hydrogen injector current reaches the peak current. During the current rise phase, using a larger peak current value is beneficial for the rapid opening of the hydrogen nozzle of the hydrogen injector.

[0059] S204, during the peak current oscillation phase, controls the drive voltage to alternately open and close according to the preset low peak duration and preset high peak duration, until the duration corresponding to the peak current oscillation phase is reached, so that the current of the hydrogen injector during the peak current oscillation phase is the peak oscillation current.

[0060] The peak oscillation current refers to the current that varies periodically between the peak current and the preset low peak current. The peak current is greater than the low peak current. During the peak current oscillation phase, the current in the hydrogen injector during this phase is the peak oscillation current.

[0061] The preset low peak duration characterizes the time it takes for the peak oscillating current of the hydrogen injector to decrease from the peak current to the preset low peak current. The preset high peak duration characterizes the time it takes for the peak oscillating current of the hydrogen injector to increase from the low peak current to the peak current.

[0062] The duration of the peak current oscillation phase refers to the length of time the peak current oscillation phase lasts. After the current boost phase ends, the terminal enters the peak current oscillation phase.

[0063] During the peak current oscillation phase, the terminal controls the drive voltage to alternately switch on and off according to preset peak low duration and preset peak high duration, until the duration corresponding to the peak current oscillation phase is reached. Specifically, during the preset peak low duration of the peak current oscillation phase, the terminal controls the power supply equipment to turn on the drive voltage supplied to the hydrogen injector; during the preset peak high duration of the peak current oscillation phase, the terminal controls the power supply equipment to turn off the drive voltage supplied to the hydrogen injector. The duration of the alternating on and off of the drive voltage during the peak current oscillation phase is the duration corresponding to the peak current oscillation phase.

[0064] S206, during the current maintenance phase, the drive voltage is controlled to close for a preset switch duration, and the duration of the current maintenance phase is determined based on the hydrogen demand and hydrogen flow rate. Based on the duration of the current maintenance phase, the preset low-level maintenance duration, and the preset high-level maintenance duration, the drive voltage is controlled to alternately open and close until the duration of the current maintenance phase is reached, so that the current of the hydrogen injector during the peak current oscillation phase is a low-value oscillation current. Under the action of the peak current, the peak oscillation current, and the low-value oscillation current, the hydrogen injector injects hydrogen that matches the hydrogen demand, and the low-value oscillation current is less than the peak oscillation current.

[0065] After the peak current oscillation phase ends, the terminal enters the current maintenance phase.

[0066] The low-value oscillating current refers to the current that periodically varies between a preset high holding current and a preset low holding current. The preset high holding current is greater than the preset low holding current. During the current maintenance phase, the hydrogen injector current is the low-value oscillating current, and the hydrogen nozzle of the hydrogen injector remains open. Compared to using peak current to maintain the hydrogen nozzle open, this is beneficial for energy saving.

[0067] During the current sustaining phase, the terminal control drive voltage is turned off for a preset switching duration so that the current of the hydrogen injector drops from the peak current to a preset low sustaining current.

[0068] Hydrogen demand is determined by the required mass of hydrogen based on hydrogen injection requirements. Hydrogen flow rate refers to the mass of hydrogen flowing through the hydrogen injector within 5 unit time units. The terminal output is based on both hydrogen demand and hydrogen flow rate.

[0069] Determine the duration of the current sustaining phase.

[0070] The preset low-level sustaining duration characterizes the duration during which the low-value oscillating current of the hydrogen injector decreases from the preset high sustaining current to the preset low sustaining current. The preset high-level sustaining duration characterizes the duration during which the low-value oscillating current of the hydrogen injector rises from the preset low sustaining current to the preset high sustaining current.

[0071] During the current sustaining phase, after the control drive voltage is turned off for a preset switching duration, the terminal controls the drive voltage to alternately turn on and off according to the duration of the current sustaining phase, the preset low-level sustaining duration, and the preset high-level sustaining duration, until the duration of the current sustaining phase is reached. Specifically, during the preset low-level sustaining duration of the current sustaining phase, the terminal controls the power supply equipment to turn on the drive voltage supplied to the hydrogen injector; during the high-level sustaining phase...

[0072] During the preset high-level maintenance period of the current maintenance phase, the terminal control shuts off the driving voltage supplied to the hydrogen injector 5 by the power supply equipment. The duration of the alternating on / off of the driving voltage during the current maintenance phase is the difference between the duration of the current maintenance phase and the preset switching duration.

[0073] The hydrogen injector injects hydrogen in a quantity that matches the demand under the action of peak current, peak oscillation current, and low oscillation current.

[0074] In the aforementioned hydrogen injection control method, upon receiving an injection command, a current boost phase, a zero-peak current oscillation phase, and a current sustaining phase are executed sequentially. During the current boost phase, the driving voltage supplied to the hydrogen injector by the power supply equipment is turned on; when the corresponding duration of the current boost phase is reached, the driving voltage is turned off. During the peak current oscillation phase, the driving voltage is alternately turned on and off according to preset low-peak duration and preset high-peak duration until the corresponding duration of the peak current oscillation phase is reached. During the current sustaining phase…

[0075] The hydrogen injection control method involves controlling the driving voltage to close a preset switch for a set duration, and then alternately opening and closing the driving voltage based on the duration of the current sustaining phase, the preset low-level sustaining period, and the preset high-level sustaining period, until the duration of the current sustaining phase is reached. This method ensures that during the current boosting phase, the hydrogen injector current reaches its peak current, facilitating rapid opening of the hydrogen injector; during the peak current oscillation phase, the hydrogen injector current is at its peak oscillation current, facilitating a stable entry into the peak current oscillation phase; and during the current sustaining phase, the hydrogen injector current is at a low-value oscillation current, facilitating a stable entry into other phases. Furthermore, by controlling the driving voltage of the hydrogen injector in stages, the injection of hydrogen matching the hydrogen demand is achieved. The control method is simple to implement and improves the efficiency of hydrogen injection control.

[0076] In one embodiment, such as Figure 3 As shown, the drive voltage is controlled to alternately open and close according to the preset low peak duration and the preset high peak duration, including:

[0077] S302 determines the number of oscillations of the peak oscillation current based on the duration of the peak current oscillation phase, the preset low peak duration, and the preset high peak duration.

[0078] Specifically, the terminal adds the preset low-peak duration to the preset high-peak duration, and uses the sum as the time required for one oscillation of the peak oscillation current. The terminal then divides the duration corresponding to the peak current oscillation phase by the time required for one oscillation of the peak oscillation current to obtain the number of oscillations of the peak oscillation current.

[0079] S304 controls the driving voltage to alternately open and close based on the preset peak low-level duration, the preset peak high-level duration, and the number of oscillations of the peak oscillation current.

[0080] The process of the peak oscillation current decreasing from the peak current to a preset low peak current, and then rising back to the peak current, is called one oscillation of the peak oscillation current. During the peak current oscillation phase, the process of the drive voltage turning on and off once corresponds to one oscillation of the peak oscillation current.

[0081] The terminal controls the driving voltage to alternately turn on and off based on preset peak low duration, preset peak high duration, and the number of oscillations of the peak oscillation current. Specifically, the terminal controls the driving voltage to alternately turn on and off a number of times, equal to the number of oscillations of the peak oscillation current. During one turn-on / off process of the driving voltage, the turning on and off is performed according to the preset peak low duration and preset peak high duration.

[0082] In this embodiment, the number of oscillations of the peak oscillation current is determined by the duration corresponding to the peak current oscillation phase, the preset low peak duration, and the preset high peak duration. Based on the preset low peak duration, the preset high peak duration, and the number of oscillations of the peak oscillation current, the driving voltage is controlled to alternately open and close. This method of alternating opening and closing of the driving voltage ensures that the driving voltage is opened and closed according to the preset low peak duration and the preset high peak duration each time during the peak current oscillation phase. When the number of alternating opening and closing times equals the number of oscillations of the peak oscillation current, the opening and closing control of the driving voltage ends. The control method is simple and easy to implement, which is beneficial to improving the efficiency of hydrogen injection control.

[0083] In one embodiment, such as Figure 4 As shown, the peak oscillation current oscillates at least once; based on the preset low peak duration, the preset high peak duration, and the number of peak oscillations, the drive voltage is controlled to alternately open and close, including:

[0084] S402 controls the drive voltage to open for a preset peak low duration for each oscillation in at least one oscillation, so that the peak oscillation current decreases from the peak current to the preset low peak current.

[0085] The peak oscillation current oscillates at least once. For each oscillation within this at least one oscillation, the terminal control drive voltage is activated for a preset peak low duration, i.e., the duration for which the drive voltage supplied to the hydrogen injector by the power supply equipment is equal to the preset peak low duration. Due to the presence of inductance, the peak oscillation current gradually decreases from the peak current to the preset low peak current. The preset peak low duration is obtained through experimental calibration. For example, the drive voltage is controlled to open and close simultaneously, while the peak oscillation current is detected. When the peak current is detected to gradually decrease to the preset low peak current, the duration for which the peak current decreases to the preset low peak current is recorded. After multiple drive voltage opening and closing controls, the average of the durations for which the peak current decreases to the preset low peak current obtained from these multiple controls is used to obtain the preset peak low duration.

[0086] S404 controls the drive voltage to close the preset peak high duration when the preset low peak duration is reached, so that the peak oscillation current rises from the preset low peak current to the peak current.

[0087] Specifically, when the preset low-peak duration is reached, the magnitude of the peak oscillation current equals the preset low-peak current. The terminal control drive voltage is shut off for a preset high-peak duration, meaning the duration for which the drive voltage supplied to the hydrogen injector by the power supply equipment is turned off is equal to the preset high-peak duration. Due to the presence of inductance, the peak oscillation current gradually increases from the preset low-peak current to the peak current. The preset high-peak duration is obtained through experimental calibration.

[0088] In this embodiment, for each oscillation in at least one oscillation, the driving voltage is controlled to open for a preset peak low duration, so that the peak oscillation current decreases from the peak current to a preset low peak current. When the preset peak low duration is reached, the driving voltage is controlled to close for a preset peak high duration, so that the peak oscillation current rises from the preset low peak current to the peak current. This method of controlling the opening and closing of the driving voltage is simple to implement and is beneficial to improving the efficiency of hydrogen injection control.

[0089] In one embodiment, such as Figure 5 As shown, the drive voltage is controlled to alternately turn on and off based on the duration of the current sustaining phase, the preset sustaining low phase duration, and the preset sustaining high phase duration, including:

[0090] S502 determines the number of oscillations of the low-value oscillation current based on the duration of the current maintenance phase, the preset duration of maintaining the low position, and the preset duration of maintaining the high position.

[0091] Specifically, the terminal adds the preset low-level maintenance duration to the preset high-level maintenance duration, and uses the sum as the time required for one oscillation of the low-value oscillating current. The terminal subtracts the preset switching duration from the duration of the current maintenance phase to obtain the oscillation duration of the low-value current. The oscillation duration of the low-value current is divided by the time required for one oscillation of the low-value oscillating current to obtain the number of oscillations of the low-value oscillating current.

[0092] S504 controls the driving voltage to alternately open and close based on the preset duration of maintaining a low position, the preset duration of maintaining a high position, and the number of oscillations of the low-value oscillation current.

[0093] The process of the low-value oscillation current rising from a preset low holding current to a preset high holding current, and then falling back to a preset low holding current, is called one oscillation of the low-value oscillation current. During the current holding phase, the process of the drive voltage turning off after one turn-on corresponds to one oscillation of the low-value oscillation current.

[0094] The terminal controls the driving voltage to alternately turn on and off based on a preset low-level maintenance duration, a preset high-level maintenance duration, and the number of oscillations of the low-value oscillation current. Specifically, the terminal controls the driving voltage to alternately turn on and off multiple times, equal to the number of oscillations of the low-value oscillation current. During one turn-on / off process of the driving voltage, the turning on and off is performed according to the preset low-level maintenance duration and the preset high-level maintenance duration.

[0095] In this embodiment, the number of oscillations of the low-value oscillating current is determined by the duration of the current maintenance phase, the preset low-level maintenance duration, and the preset high-level maintenance duration. Based on the preset low-level maintenance duration, the preset high-level maintenance duration, and the number of oscillations of the low-value oscillating current, the driving voltage is controlled to alternately open and close. This method of alternating opening and closing of the driving voltage ensures that the driving voltage is opened and closed according to the preset low-level maintenance duration and the preset high-level maintenance duration each time during the current maintenance phase. When the number of alternating opening and closing times equals the number of oscillations of the low-value oscillating current, the opening and closing control of the driving voltage ends. The control method is simple and easy to implement, which is beneficial to improving the efficiency of hydrogen injection control.

[0096] In one embodiment, such as Figure 6 As shown, the number of oscillations of the low-value oscillation current includes at least one; based on the preset low-level maintenance duration, the preset high-level maintenance duration, and the number of oscillations of the low-value oscillation current, the drive voltage is controlled to alternately open and close, including:

[0097] S602, for each oscillation in at least one oscillation, controls the drive voltage to be turned on for a preset low holding time so that the low oscillation current decreases from a preset high holding current to a preset low holding current.

[0098] The low-value oscillation current includes at least one oscillation. For each oscillation within this at least one oscillation, the terminal control drive voltage is activated for a preset low-level maintenance duration, i.e., the duration for which the drive voltage supplied to the hydrogen injector by the power supply equipment is equal to the preset low-level maintenance duration. Due to the presence of inductance, the low-value oscillation current gradually decreases from a preset high maintenance current to a preset low maintenance current. The preset low-level maintenance duration is obtained through experimental calibration.

[0099] S604, when the preset low-level holding time is reached, controls the drive voltage to turn off the preset high-level holding time, so that the low-value oscillation current rises from the preset low holding current to the preset high holding current.

[0100] Specifically, when the preset low-level sustaining time is reached, the magnitude of the low-value oscillation current equals the preset low sustaining current. The terminal control drive voltage is turned off for the preset high sustaining time, that is, the duration for which the drive voltage supplied to the hydrogen injector by the power supply equipment is turned off is equal to the preset high sustaining time. Due to the presence of inductance, the low-value oscillation current gradually increases from the preset low sustaining current to the preset high sustaining current. The preset high sustaining time is obtained through experimental calibration.

[0101] In this embodiment, for each oscillation in at least one oscillation, the driving voltage is controlled to maintain a preset low position for a preset duration, causing the low-value oscillation current to decrease from a preset high holding current to a preset low holding current. When the preset low-value maintenance time is reached, the driving voltage is controlled to close the preset high-value maintenance time, causing the low-value oscillation current to rise from the preset low holding current to a preset high holding current. This method of controlling the opening and closing of the driving voltage is simple to implement and helps to improve the efficiency of hydrogen injection control.

[0102] In one embodiment, determining the duration of the current sustaining phase based on the hydrogen demand and hydrogen flow rate includes: determining the duration of the hydrogen nozzle in the hydrogen injector being open based on the hydrogen demand and hydrogen flow rate; and obtaining the duration of the current sustaining phase by looking up a table based on the duration of the hydrogen nozzle being open.

[0103] The terminal divides the hydrogen demand by the hydrogen flow rate to obtain the duration of the hydrogen nozzle's operation in the hydrogen injector. There is a one-to-one mapping between the nozzle's operation duration and the current sustaining phase duration. The terminal uses this mapping to look up the corresponding current sustaining phase duration in a table. This mapping is based on empirical values ​​obtained from historical experiments.

[0104] In this embodiment, the duration of the hydrogen nozzle's operation in the hydrogen injector is determined by the hydrogen demand and flow rate. Based on this duration, the duration of the current sustaining phase is obtained by looking up a table. This method allows for the determination of the current sustaining phase duration based on the hydrogen demand and flow rate, enabling the injection of the required amount of hydrogen by controlling the duration of the current sustaining phase. The control method is simple and easy to implement, improving the efficiency of hydrogen injection control.

[0105] To illustrate the hydrogen injection control method and its effects in this scheme in detail, a specific embodiment is described below:

[0106] This section addresses the application scenario of hydrogen injection via hydrogen injectors in fuel cells. After receiving the injection command at the terminal, the system sequentially executes a current boost phase, a peak current oscillation phase, and a current maintenance phase. For example... Figure 7 The diagram shows the driving voltage and current of the hydrogen injection control method during the current boosting stage, peak current oscillation stage, and current maintenance stage.

[0107] During the current boost phase, the power supply equipment is turned on to provide the driving voltage to the hydrogen injector. When the corresponding duration of the current boost phase is reached, the driving voltage is turned off so that the current of the hydrogen injector reaches the peak current.

[0108] During the peak current oscillation phase, the driving voltage is controlled to alternately open and close according to the preset low peak duration and preset high peak duration until the duration corresponding to the peak current oscillation phase is reached, so that the current of the hydrogen injector during the peak current oscillation phase is the peak oscillation current.

[0109] Specifically, the driving voltage is controlled to alternately open and close based on preset peak low duration and preset peak high duration. Specifically, the number of oscillations of the peak oscillation current is determined based on the duration corresponding to the peak current oscillation phase, the preset peak low duration, and the preset peak high duration. The number of oscillations of the peak oscillation current includes at least one oscillation. For each oscillation in at least one oscillation, the driving voltage is controlled to open for the preset peak low duration, causing the peak oscillation current to decrease from the peak current to a preset low peak current. When the preset peak low duration is reached, the driving voltage is controlled to close for the preset peak high duration, causing the peak oscillation current to rise from the preset low peak current back to the peak current.

[0110] During the current sustaining phase, the control drive voltage is turned off for a preset switch duration, and the opening duration of the hydrogen nozzle in the hydrogen injector is determined based on the hydrogen demand and flow rate. The duration of the current sustaining phase is then obtained from a table based on the opening duration of the hydrogen nozzle. The drive voltage is alternately switched on and off according to the duration of the current sustaining phase, the preset low-level sustaining duration, and the preset high-level sustaining duration, until the duration of the current sustaining phase is reached. This ensures that the current in the hydrogen injector during the peak current oscillation phase is a low-value oscillation current. Under the influence of the peak current, peak oscillation current, and low-value oscillation current, the hydrogen injector injects hydrogen matching the hydrogen demand, with the low-value oscillation current being less than the peak oscillation current.

[0111] Specifically, the driving voltage is controlled to alternately open and close based on the duration of the current sustaining phase, the preset low sustaining duration, and the preset high sustaining duration. Specifically, the number of oscillations of the low-value oscillation current is determined based on the duration of the current sustaining phase, the preset low sustaining duration, and the preset high sustaining duration. The number of oscillations of the low-value oscillation current includes at least one oscillation. For each oscillation in at least one oscillation, the driving voltage is controlled to open for the preset low sustaining duration, causing the low-value oscillation current to decrease from the preset high sustaining current to the preset low sustaining current. When the preset low sustaining duration is reached, the driving voltage is controlled to close for the preset high sustaining duration, causing the low-value oscillation current to rise from the preset low sustaining current to the preset high sustaining current. Figure 8 The diagram shows the driving voltage and current of the hydrogen injection control method during one injection cycle.

[0112] It should be understood that although the steps in the flowcharts of the embodiments described above are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the embodiments described above may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.

[0113] Based on the same inventive concept, this application also provides a hydrogen injection control device for implementing the hydrogen injection control method described above. The solution provided by this device is similar to the solution described in the above method; therefore, the specific limitations of one or more hydrogen injection control device embodiments provided below can be found in the limitations of the hydrogen injection control method described above, and will not be repeated here.

[0114] In one embodiment, such as Figure 9 As shown, a hydrogen injection control device 100 is provided. The control device 100, upon receiving an injection command, sequentially executes a current boost phase, a peak current oscillation phase, and a current sustaining phase. It includes a current boost module 120, a peak current oscillation module 140, and a current sustaining module 160, wherein:

[0115] The current boost module 120 is used to control the power supply equipment to provide the driving voltage to the hydrogen injector during the current boost phase, and to control the power supply equipment to turn off the driving voltage when the corresponding duration of the current boost phase is reached, so that the current of the hydrogen injector reaches the peak current.

[0116] The peak current oscillation module 140 is used to control the drive voltage to alternately open and close according to the preset low peak duration and the preset high peak duration during the peak current oscillation phase, until the duration corresponding to the peak current oscillation phase is reached, so that the current of the hydrogen injector during the peak current oscillation phase is the peak oscillation current.

[0117] The current sustaining module 160 is used to control the drive voltage to close a preset switch for a certain duration during the current sustaining phase, and to determine the duration of the current sustaining phase based on the hydrogen demand and hydrogen flow rate. Based on the duration of the current sustaining phase, the preset low-level sustaining duration, and the preset high-level sustaining duration, the drive voltage is controlled to alternately open and close until the duration of the current sustaining phase is reached, so that the current of the hydrogen injector during the peak current oscillation phase is a low-value oscillation current. Under the action of the peak current, the peak oscillation current, and the low-value oscillation current, the hydrogen injector injects hydrogen that matches the hydrogen demand, and the low-value oscillation current is less than the peak oscillation current.

[0118] The aforementioned hydrogen injection control device, upon receiving an injection command, sequentially executes a current boost phase, a peak current oscillation phase, and a current maintenance phase. During the current boost phase, the drive voltage supplied to the hydrogen injector by the power supply equipment is turned on, and the drive voltage is turned off when the corresponding duration of the current boost phase is reached. During the peak current oscillation phase, the drive voltage is alternately turned on and off according to preset low-peak duration and preset high-peak duration until the corresponding duration of the peak current oscillation phase is reached. During the current maintenance phase, the drive voltage is turned off for a preset switching duration, and the drive voltage is alternately turned on and off according to the duration of the current maintenance phase, the preset low-peak duration, and the preset high-peak duration until the duration of the current maintenance phase is reached. This hydrogen injection control device ensures that during the current boost phase, the hydrogen injector current reaches its peak current, facilitating rapid opening of the hydrogen injector; during the peak current oscillation phase, the hydrogen injector current is at its peak oscillation current, facilitating a stable entry into the peak current oscillation phase; and during the current maintenance phase, the hydrogen injector current is at a low oscillation current, facilitating a stable entry into other phases. Simultaneously, by controlling the hydrogen injector's drive voltage in stages, the device achieves the injection of hydrogen matching the hydrogen demand. The control method is simple and easy to implement, improving the efficiency of hydrogen injection control.

[0119] In one embodiment, in controlling the driving voltage to alternately open and close based on the preset peak low duration and the preset peak high duration, the peak current oscillation module 140 is further configured to: determine the number of oscillations of the peak oscillation current based on the duration corresponding to the peak current oscillation phase, the preset peak low duration, and the preset peak high duration; and control the driving voltage to alternately open and close based on the preset peak low duration, the preset peak high duration, and the number of oscillations of the peak oscillation current.

[0120] In one embodiment, the number of oscillations of the peak oscillation current includes at least one; regarding the control of the driving voltage to alternately open and close based on the preset peak low duration, the preset peak high duration, and the number of oscillations of the peak oscillation current, the peak current oscillation module 140 is further configured to: for each oscillation in the at least one oscillation, control the driving voltage to open for a preset peak low duration so that the peak oscillation current decreases from the peak current to a preset low peak current; and when the preset peak low duration is reached, control the driving voltage to close for a preset peak high duration so that the peak oscillation current rises from the preset low peak current to the peak current.

[0121] In one embodiment, in controlling the alternating on / off switching of the drive voltage based on the duration of the current sustaining phase, the preset low-level sustaining duration, and the preset high-level sustaining duration, the current sustaining module 160 is further configured to: determine the number of oscillations of the low-value oscillation current based on the duration of the current sustaining phase, the preset low-level sustaining duration, and the preset high-level sustaining duration; and control the alternating on / off switching of the drive voltage based on the preset low-level sustaining duration, the preset high-level sustaining duration, and the number of oscillations of the low-value oscillation current.

[0122] In one embodiment, the number of oscillations of the low-value oscillation current includes at least one; regarding the control of the alternating on / off switching of the drive voltage based on the preset low-level maintenance duration, the preset high-level maintenance duration, and the number of oscillations of the low-value oscillation current, the current sustaining module 160 is further configured to: for each oscillation in the at least one oscillation, control the drive voltage to open the preset low-level maintenance duration so that the low-value oscillation current decreases from the preset high-level maintenance current to the preset low-level maintenance current; and when the preset low-level maintenance duration is reached, control the drive voltage to close the preset high-level maintenance duration so that the low-value oscillation current rises from the preset low-level maintenance current to the preset high-level maintenance current.

[0123] In one embodiment, in determining the duration of the current sustaining phase based on the hydrogen demand and hydrogen flow rate, the current sustaining module 160 is further configured to: determine the duration of the opening of the hydrogen nozzle in the hydrogen injector based on the hydrogen demand and hydrogen flow rate; and obtain the duration of the current sustaining phase by looking up a table based on the duration of the opening of the hydrogen nozzle.

[0124] Each module in the aforementioned hydrogen injection control device can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in the processor of a computer device in hardware form or independent of it, or stored in the memory of a computer device in software form, so that the processor can call and execute the corresponding operations of each module.

[0125] In one embodiment, a computer device is provided, which may be a terminal, and its internal structure diagram may be as follows: Figure 10As shown. The computer device includes a processor, memory, input / output interface, communication interface, display unit, and input device. The processor, memory, and input / output interface are connected via a system bus, and the communication interface, display unit, and input device are also connected to the system bus via the input / output interface. The processor provides computing and control capabilities. The memory includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores the operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium. The input / output interface is used for exchanging information between the processor and external devices. The communication interface is used for wired or wireless communication with external terminals; wireless communication can be achieved through Wi-Fi, mobile cellular networks, NFC (Near Field Communication), or other technologies. When the computer program is executed by the processor, it implements a hydrogen injection control method. Those skilled in the art will understand that... Figure 10 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0126] In one embodiment, a computer device is provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to perform the following steps:

[0127] During the current boost phase, the driving voltage supplied to the hydrogen injector by the power supply equipment is turned on. When the corresponding duration of the current boost phase is reached, the driving voltage is turned off to ensure that the hydrogen injector current reaches the peak current. During the peak current oscillation phase, the driving voltage is alternately turned on and off according to the preset low peak duration and preset high peak duration until the corresponding duration of the peak current oscillation phase is reached, so that the current of the hydrogen injector during the peak current oscillation phase is the peak oscillation current. During the current maintenance phase, the driving voltage is turned off for a preset switching duration, and the duration of the current maintenance phase is determined according to the hydrogen demand and hydrogen flow rate. The driving voltage is alternately turned on and off according to the duration of the current maintenance phase, the preset low maintenance duration, and the preset high maintenance duration until the duration of the current maintenance phase is reached, so that the current of the hydrogen injector during the peak current oscillation phase is the low oscillation current. Under the action of the peak current, peak oscillation current, and low oscillation current, the hydrogen injector injects hydrogen matching the hydrogen demand, and the low oscillation current is less than the peak oscillation current.

[0128] In one embodiment, the processor, when executing a computer program, also performs the following steps:

[0129] The number of oscillations of the peak oscillation current is determined based on the duration of the peak current oscillation phase, the preset low peak duration, and the preset high peak duration; the driving voltage is controlled to alternately open and close based on the preset low peak duration, the preset high peak duration, and the number of oscillations of the peak oscillation current.

[0130] In one embodiment, the processor, when executing a computer program, also performs the following steps:

[0131] The peak oscillation current oscillates at least once; for each oscillation in at least one oscillation, the drive voltage is controlled to open a preset peak low duration so that the peak oscillation current decreases from the peak current to a preset low peak current; when the preset peak low duration is reached, the drive voltage is controlled to close a preset peak high duration so that the peak oscillation current rises from the preset low peak current to the peak current.

[0132] In one embodiment, the processor, when executing a computer program, also performs the following steps:

[0133] The number of oscillations of the low-value oscillation current is determined based on the duration of the current maintenance phase, the preset duration of maintaining the low position, and the preset duration of maintaining the high position; the driving voltage is controlled to alternately open and close based on the preset duration of maintaining the low position, the preset duration of maintaining the high position, and the number of oscillations of the low-value oscillation current.

[0134] In one embodiment, the processor, when executing a computer program, also performs the following steps:

[0135] The number of oscillations of the low-value oscillation current includes at least one; for each oscillation in the at least one oscillation, the control drive voltage is turned on for a preset low-level maintenance duration so that the low-value oscillation current decreases from a preset high maintenance current to a preset low maintenance current; when the preset low-level maintenance duration is reached, the control drive voltage is turned off for a preset high maintenance duration so that the low-value oscillation current rises from a preset low maintenance current to a preset high maintenance current.

[0136] In one embodiment, the processor, when executing a computer program, also performs the following steps:

[0137] Based on the hydrogen demand and hydrogen flow rate, determine the duration of the hydrogen nozzle's operation in the hydrogen injector; based on the duration of the hydrogen nozzle's operation, look up the table to obtain the duration of the current maintenance phase.

[0138] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon, the computer program performing the following steps when executed by a processor:

[0139] During the current boost phase, the driving voltage supplied to the hydrogen injector by the power supply equipment is turned on. When the corresponding duration of the current boost phase is reached, the driving voltage is turned off to ensure that the hydrogen injector current reaches the peak current. During the peak current oscillation phase, the driving voltage is alternately turned on and off according to the preset low peak duration and preset high peak duration until the corresponding duration of the peak current oscillation phase is reached, so that the current of the hydrogen injector during the peak current oscillation phase is the peak oscillation current. During the current maintenance phase, the driving voltage is turned off for a preset switching duration, and the duration of the current maintenance phase is determined according to the hydrogen demand and hydrogen flow rate. The driving voltage is alternately turned on and off according to the duration of the current maintenance phase, the preset low maintenance duration, and the preset high maintenance duration until the duration of the current maintenance phase is reached, so that the current of the hydrogen injector during the peak current oscillation phase is the low oscillation current. Under the action of the peak current, peak oscillation current, and low oscillation current, the hydrogen injector injects hydrogen matching the hydrogen demand, and the low oscillation current is less than the peak oscillation current.

[0140] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0141] The number of oscillations of the peak oscillation current is determined based on the duration of the peak current oscillation phase, the preset low peak duration, and the preset high peak duration; the driving voltage is controlled to alternately open and close based on the preset low peak duration, the preset high peak duration, and the number of oscillations of the peak oscillation current.

[0142] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0143] The peak oscillation current oscillates at least once; for each oscillation in at least one oscillation, the drive voltage is controlled to open a preset peak low duration so that the peak oscillation current decreases from the peak current to a preset low peak current; when the preset peak low duration is reached, the drive voltage is controlled to close a preset peak high duration so that the peak oscillation current rises from the preset low peak current to the peak current.

[0144] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0145] The number of oscillations of the low-value oscillation current is determined based on the duration of the current maintenance phase, the preset duration of maintaining the low position, and the preset duration of maintaining the high position; the driving voltage is controlled to alternately open and close based on the preset duration of maintaining the low position, the preset duration of maintaining the high position, and the number of oscillations of the low-value oscillation current.

[0146] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0147] The number of oscillations of the low-value oscillation current includes at least one; for each oscillation in the at least one oscillation, the control drive voltage is turned on for a preset low-level maintenance duration so that the low-value oscillation current decreases from a preset high maintenance current to a preset low maintenance current; when the preset low-level maintenance duration is reached, the control drive voltage is turned off for a preset high maintenance duration so that the low-value oscillation current rises from a preset low maintenance current to a preset high maintenance current.

[0148] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0149] Based on the hydrogen demand and hydrogen flow rate, determine the duration of the hydrogen nozzle's operation in the hydrogen injector; based on the duration of the hydrogen nozzle's operation, look up the table to obtain the duration of the current maintenance phase.

[0150] In one embodiment, a computer program product is provided, including a computer program that, when executed by a processor, performs the following steps:

[0151] During the current boost phase, the driving voltage supplied to the hydrogen injector by the power supply equipment is turned on. When the corresponding duration of the current boost phase is reached, the driving voltage is turned off to ensure that the hydrogen injector current reaches the peak current. During the peak current oscillation phase, the driving voltage is alternately turned on and off according to the preset low peak duration and preset high peak duration until the corresponding duration of the peak current oscillation phase is reached, so that the current of the hydrogen injector during the peak current oscillation phase is the peak oscillation current. During the current maintenance phase, the driving voltage is turned off for a preset switching duration, and the duration of the current maintenance phase is determined according to the hydrogen demand and hydrogen flow rate. The driving voltage is alternately turned on and off according to the duration of the current maintenance phase, the preset low maintenance duration, and the preset high maintenance duration until the duration of the current maintenance phase is reached, so that the current of the hydrogen injector during the peak current oscillation phase is the low oscillation current. Under the action of the peak current, peak oscillation current, and low oscillation current, the hydrogen injector injects hydrogen matching the hydrogen demand, and the low oscillation current is less than the peak oscillation current.

[0152] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0153] The number of oscillations of the peak oscillation current is determined based on the duration of the peak current oscillation phase, the preset low peak duration, and the preset high peak duration; the driving voltage is controlled to alternately open and close based on the preset low peak duration, the preset high peak duration, and the number of oscillations of the peak oscillation current.

[0154] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0155] The peak oscillation current oscillates at least once; for each oscillation in at least one oscillation, the drive voltage is controlled to open a preset peak low duration so that the peak oscillation current decreases from the peak current to a preset low peak current; when the preset peak low duration is reached, the drive voltage is controlled to close a preset peak high duration so that the peak oscillation current rises from the preset low peak current to the peak current.

[0156] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0157] The number of oscillations of the low-value oscillation current is determined based on the duration of the current maintenance phase, the preset duration of maintaining the low position, and the preset duration of maintaining the high position; the driving voltage is controlled to alternately open and close based on the preset duration of maintaining the low position, the preset duration of maintaining the high position, and the number of oscillations of the low-value oscillation current.

[0158] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0159] The number of oscillations of the low-value oscillation current includes at least one; for each oscillation in the at least one oscillation, the control drive voltage is turned on for a preset low-level maintenance duration so that the low-value oscillation current decreases from a preset high maintenance current to a preset low maintenance current; when the preset low-level maintenance duration is reached, the control drive voltage is turned off for a preset high maintenance duration so that the low-value oscillation current rises from a preset low maintenance current to a preset high maintenance current.

[0160] In one embodiment, when the computer program is executed by a processor, it also performs the following steps:

[0161] Based on the hydrogen demand and hydrogen flow rate, determine the duration of the hydrogen nozzle's operation in the hydrogen injector; based on the duration of the hydrogen nozzle's operation, look up the table to obtain the duration of the current maintenance phase.

[0162] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of the relevant data shall comply with the relevant laws, regulations and standards of the relevant countries and regions.

[0163] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, etc., and are not limited to these.

[0164] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0165] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A method for controlling hydrogen injection, characterized in that, The control method includes sequentially executing a current boost phase, a peak current oscillation phase, and a current maintenance phase after receiving an injection command. The method includes: During the current boost phase, the power supply equipment is turned on to provide the driving voltage to the hydrogen injector. When the duration corresponding to the current boost phase is reached, the driving voltage is turned off so that the current of the hydrogen injector reaches the peak current. During the peak current oscillation phase, the driving voltage is controlled to alternately open and close according to a preset low peak duration and a preset high peak duration, until the duration corresponding to the peak current oscillation phase is reached, so that the current of the hydrogen injector during the peak current oscillation phase is the peak oscillation current; the peak oscillation current refers to the current that changes periodically between the peak current and the preset low peak current; the peak current is greater than the preset low peak current; the preset low peak duration represents the time it takes for the peak oscillation current to decrease from the peak current to the preset low peak current; the preset high peak duration represents the time it takes for the peak oscillation current to rise from the low peak current to the peak current; During the current maintenance phase, the driving voltage is controlled to be off for a preset duration, causing the current of the hydrogen injector to decrease from the peak current to a preset low maintenance current. The duration of the current maintenance phase is determined based on the hydrogen demand and flow rate. The driving voltage is then controlled to alternately switch on and off based on the duration of the current maintenance phase, the preset low maintenance duration, and the preset high maintenance duration, until the duration of the current maintenance phase is reached. This ensures that the current of the hydrogen injector during the peak current oscillation phase is a low-value oscillation current. Under the influence of the peak current, the peak oscillation current, and the low-value oscillation current, the hydrogen injector injects hydrogen matching the hydrogen demand. The low-value oscillation current is less than the peak oscillation current. The low-value oscillation current refers to the current that periodically changes between the preset high maintenance current and the preset low maintenance current. The preset high maintenance current is greater than the preset low maintenance current. The step of controlling the driving voltage to alternately open and close based on a preset low-peak duration and a preset high-peak duration includes: The number of oscillations of the peak oscillation current is determined based on the duration corresponding to the peak current oscillation phase, the preset low peak duration, and the preset high peak duration. The number of oscillations of the peak oscillation current is obtained by dividing the duration corresponding to the peak current oscillation phase by the time required for the peak oscillation current to oscillate once. The time required for the peak oscillation current to oscillate once is obtained by adding the preset low peak duration and the preset high peak duration. The process of the peak oscillation current decreasing from the peak current to the preset low peak current and then rising from the preset low peak current back to the peak current is called one oscillation of the peak oscillation current. Based on the preset low peak duration, the preset high peak duration, and the number of oscillations of the peak oscillation current, the driving voltage is controlled to alternately turn on and off; the number of times the driving voltage is controlled to alternately turn on and off is equal to the number of oscillations of the peak oscillation current.

2. The method according to claim 1, characterized in that, The peak oscillation current oscillates at least once; The step of controlling the alternating on / off switching of the driving voltage based on the preset low-peak duration, the preset high-peak duration, and the number of oscillations of the peak oscillation current includes: For each oscillation in at least one oscillation, the driving voltage is controlled to enable the preset peak low duration so that the peak oscillation current decreases from the peak current to the preset low peak current. When the preset low peak duration is reached, the driving voltage is controlled to turn off the preset high peak duration, so that the peak oscillation current rises from the preset low peak current to the peak current.

3. The method according to claim 1, characterized in that, The step of controlling the driving voltage to alternately turn on and off based on the duration of the current maintenance phase, the preset low-level maintenance duration, and the preset high-level maintenance duration includes: The number of oscillations of the low-value oscillation current is determined based on the duration of the current maintenance phase, the preset duration of maintaining the low position, and the preset duration of maintaining the high position. Based on the preset low-level maintenance duration, the preset high-level maintenance duration, and the number of oscillations of the low-value oscillation current, the driving voltage is controlled to alternately turn on and off.

4. The method according to claim 3, characterized in that, The number of oscillations of the low-value oscillating current includes at least one; The step of controlling the alternating on / off switching of the driving voltage based on the preset low-level maintenance duration, the preset high-level maintenance duration, and the number of oscillations of the low-value oscillation current includes: For each oscillation in at least one oscillation, the driving voltage is controlled to enable the preset low-level maintenance duration, so that the low-value oscillation current decreases from the preset high maintenance current to the preset low maintenance current. When the preset low-level duration is reached, the driving voltage is controlled to turn off the preset high-level duration, so that the low-value oscillation current rises from the preset low-level maintenance current to the preset high-level maintenance current.

5. The method according to claim 1, characterized in that, Determining the duration of the current maintenance phase based on hydrogen demand and hydrogen flow rate includes: The duration of the hydrogen nozzle in the hydrogen injector is determined based on the hydrogen demand and the hydrogen flow rate. The duration of the current maintenance phase is obtained by referring to a table based on the duration of the hydrogen nozzle's operation.

6. A hydrogen injection control device, characterized in that, The control device is used to sequentially execute a current boost phase, a peak current oscillation phase, and a current maintenance phase after receiving an injection command. The device includes: The current boosting module is used to control the power supply equipment to turn on the driving voltage supplied to the hydrogen injector during the current boosting phase, and to control the driving voltage to turn off when the corresponding duration of the current boosting phase is reached, so that the current of the hydrogen injector reaches the peak current. A peak current oscillation module is used to control the driving voltage to alternately open and close according to a preset low peak duration and a preset high peak duration during the peak current oscillation phase, until the duration corresponding to the peak current oscillation phase is reached, so that the current of the hydrogen injector during the peak current oscillation phase is the peak oscillation current; the peak oscillation current refers to the current that changes periodically between the peak current and a preset low peak current; the peak current is greater than the preset low peak current; the preset low peak duration represents the time it takes for the peak oscillation current to decrease from the peak current to the preset low peak current; the preset high peak duration represents the time it takes for the peak oscillation current to increase from the low peak current to the peak current; A current sustaining module is used to control the drive voltage to be turned off for a preset duration during the current sustaining phase, so that the current of the hydrogen injector decreases from the peak current to a preset low sustaining current; and to determine the duration of the current sustaining phase based on the hydrogen demand and hydrogen flow rate, and to control the drive voltage to alternately turn on and off based on the duration of the current sustaining phase, the preset low sustaining duration, and the preset high sustaining duration, until the duration of the current sustaining phase is reached, so that the current of the hydrogen injector during the peak current oscillation phase is a low-value oscillation current, and the hydrogen injector injects hydrogen matching the hydrogen demand under the action of the peak current, the peak oscillation current, and the low-value oscillation current, wherein the low-value oscillation current is less than the peak oscillation current; the low-value oscillation current refers to the current that periodically changes between the preset high sustaining current and the preset low sustaining current; the preset high sustaining current is greater than the preset low sustaining current; The peak current oscillation module is further configured to determine the number of oscillations of the peak oscillation current based on the duration corresponding to the peak current oscillation phase, the preset low peak duration, and the preset high peak duration; the number of oscillations of the peak oscillation current is obtained by dividing the duration corresponding to the peak current oscillation phase by the time required for one oscillation of the peak oscillation current; the time required for one oscillation of the peak oscillation current is obtained by adding the preset low peak duration and the preset high peak duration; the process of the peak oscillation current decreasing from the peak current to the preset low peak current and then rising from the preset low peak current back to the peak current is called one oscillation of the peak oscillation current; based on the preset low peak duration, the preset high peak duration, and the number of oscillations of the peak oscillation current, the driving voltage is controlled to alternately turn on and off; the number of times the driving voltage is controlled to alternately turn on and off is equal to the number of oscillations of the peak oscillation current.

7. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the method according to any one of claims 1 to 5.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 5.

9. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 5.

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