Power regulation method, device and non-transitory storage medium for fuel cell vehicle

Abstract

The application discloses a kind of fuel cell vehicle power regulation method, device and nonvolatile storage medium.Therein, the method comprises: obtaining the total vehicle demand power of fuel cell vehicle;Based on the performance of the total vehicle demand power and fuel cell in fuel cell vehicle, determine the corresponding pull load required power value of fuel cell vehicle;Based on the pull load required power value, determine the pull load current value;In the case where the output current of fuel cell is adjusted to reach the pull load current value, the actual power of fuel cell is obtained;Based on the difference between the actual power and the total vehicle demand power, the output current of fuel cell is adjusted to adjust the actual power of fuel cell.The application solves the technical problem that the current fuel cell output power is unstable, which leads to a gap with the actual demand power, causing the lithium battery to discharge rapidly and affect the vehicle performance.

Description

Technical Field

[0001] This invention relates to the field of new energy vehicle technology, and more specifically, to a power regulation method, device, and non-volatile storage medium for fuel cell vehicles. Background Technology

[0002] As a next-generation clean energy power source, fuel cells have attracted much attention in the automotive field, especially in the modern automotive industry that pursues zero emissions and high efficiency. However, the characteristics of fuel cells determine the instability of their output power. Although there are solutions to convert the unstable voltage of fuel cells into a constant voltage through DC-DC converters, due to the inherent fluctuations in fuel cell voltage, even after voltage stabilization, the total output power still fluctuates, failing to meet the vehicle's demand for stable power output. This fluctuation is particularly pronounced under variable load conditions, leading to delays and inaccuracies in power response. Furthermore, due to the inherent instability of fuel cells, even under the same operating conditions, the output power exhibits significant fluctuations, which reduces the overall performance and reliability of the system.

[0003] There is currently no effective solution to the above problems. Summary of the Invention

[0004] This invention provides a power regulation method, apparatus, and non-volatile storage medium for fuel cell vehicles, at least to solve the technical problem that the unstable output power of fuel cells leads to a gap between the actual power demand and the actual power demand, causing the lithium battery to discharge rapidly and affecting vehicle performance.

[0005] According to one aspect of the present invention, a power regulation method for a fuel cell vehicle is provided, comprising: obtaining the total power demand of the fuel cell vehicle; determining the load-bearing power value corresponding to the fuel cell vehicle based on the total power demand and the performance of the fuel cell in the fuel cell vehicle; determining the load-bearing current value based on the load-bearing power value; obtaining the actual power of the fuel cell by adjusting the output current of the fuel cell to reach the load-bearing current value; and adjusting the actual power of the fuel cell by adjusting the output current of the fuel cell based on the difference between the actual power and the total power demand of the vehicle.

[0006] Optionally, the output current of the fuel cell is adjusted based on the difference between the actual power and the power required by the vehicle, including at least one of the following: reducing the output current of the fuel cell when the difference between the actual power and the power required by the vehicle exceeds a first preset threshold; increasing the output current of the fuel cell when the difference between the actual power and the power required by the vehicle is lower than a second preset threshold; and keeping the output current of the fuel cell constant when the difference between the actual power and the power required by the vehicle does not exceed the first preset threshold and is not lower than the second preset threshold.

[0007] Optionally, the output current of the fuel cell is adjusted based on the difference between the actual power and the power required by the vehicle, including: obtaining the actual voltage of the fuel cell; determining a single adjustment current value based on the actual power, the power required by the vehicle, and the actual voltage; and adjusting the output current of the fuel cell based on the single adjustment current value.

[0008] Optionally, when the vehicle's power demand changes, a new load-bearing power is determined based on the changed vehicle power demand; a new load-bearing current value is determined based on the new load-bearing power; the current output current of the fuel cell is obtained; a target adjustment current value is determined based on the current output current of the fuel cell and the new load-bearing current value; the actual power of the fuel cell is obtained when the fuel cell's output current is adjusted to reach the target adjustment current value; and the actual power of the fuel cell is adjusted by adjusting the fuel cell's output current based on the difference between the actual power and the vehicle's power demand.

[0009] Optionally, a target adjustment current value is determined based on the current output current of the fuel cell and the new load current value, including: when the vehicle power demand increases, selecting the maximum value between the current output current of the fuel cell and the new load current value as the target adjustment current value; and / or, when the vehicle power demand decreases, selecting the minimum value between the current output current of the fuel cell and the new load current value as the target adjustment current value.

[0010] Optionally, after adjusting the output current of the fuel cell based on the difference between the actual power and the power required by the vehicle, the actual power of the fuel cell can be obtained again after a preset time.

[0011] Optionally, the output current of the fuel cell is adjusted to obtain an adjusted output current; it is determined whether the adjusted output current is outside the preset safe current range; if the adjusted output current is outside the preset safe current range, a warning prompt is generated.

[0012] According to another aspect of the present invention, a power regulation device for a fuel cell vehicle is also provided, comprising: a first acquisition module for acquiring the total power demand of the fuel cell vehicle; a first determination module for determining, based on the total power demand and the performance of the fuel cell in the fuel cell vehicle, a load-bearing power value corresponding to the fuel cell vehicle; a second determination module for determining, based on the load-bearing power value, a load-bearing current value; a second acquisition module for acquiring the actual power of the fuel cell when the output current of the fuel cell is adjusted to reach the load-bearing current value; and an adjustment module for adjusting, based on the difference between the actual power and the total power demand, the output current of the fuel cell to adjust the actual power of the fuel cell.

[0013] According to another aspect of the present invention, a non-volatile storage medium is also provided, the non-volatile storage medium including a stored program, wherein, when the program is running, the device where the non-volatile storage medium is located is controlled to execute any of the above-described power regulation methods for fuel cell vehicles.

[0014] According to another aspect of the present invention, a computer device is also provided, the computer device including a processor for running a program, wherein the program executes any of the above-described power regulation methods for fuel cell vehicles.

[0015] According to another aspect of the present invention, a computer program product is also provided, including a computer program that, when executed by a processor, implements any of the above-described power regulation methods for fuel cell vehicles.

[0016] In this embodiment of the invention, a power regulation method for fuel cell vehicles is adopted. This method involves obtaining the total power demand of the fuel cell vehicle; determining the required load power value based on the total power demand and the performance of the fuel cell; determining the load current value based on the required load power value; obtaining the actual power of the fuel cell by adjusting its output current to reach the load current value; and adjusting the fuel cell output current based on the difference between the actual power and the total power demand to adjust the actual power of the fuel cell. This achieves the goal of adjusting the output power more quickly and accurately according to the state of the fuel cell, thereby improving the stability of the output power and making it closer to the total power demand of the vehicle. This solves the current technical problem of unstable fuel cell output power leading to a gap between the actual power demand and the actual power demand, causing rapid discharge of the lithium battery and affecting vehicle performance. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0018] Figure 1 A hardware block diagram of a computer terminal for implementing a power regulation method for fuel cell vehicles is shown.

[0019] Figure 2 This is a schematic flowchart of a power regulation method for a fuel cell vehicle according to an embodiment of the present invention;

[0020] Figure 3 This is a structural block diagram of a power regulation device for a fuel cell vehicle provided according to an embodiment of the present invention. Detailed Implementation

[0021] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0022] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0023] According to an embodiment of the present invention, a method embodiment for power regulation of a fuel cell vehicle is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0024] The method embodiment provided in Embodiment 1 of this application can be executed on a mobile terminal, computer terminal, or similar computing device. Figure 1 A hardware block diagram of a computer terminal for implementing a power regulation method for fuel cell vehicles is shown. Figure 1 As shown, the computer terminal 10 may include one or more processors (shown as 102a, 102b, ..., 102n in the figure) (the processor may include, but is not limited to, a microprocessor MCU or a programmable logic device FPGA, etc.) and a memory 104 for storing data. In addition, it may also include: a display, an input / output interface (I / O interface), a universal serial bus (USB) port (which may be included as one of the ports of a BUS bus), a network interface, a power supply, and / or a camera. Those skilled in the art will understand that... Figure 1 The structure shown is for illustrative purposes only and does not limit the structure of the aforementioned electronic device. For example, computer terminal 10 may also include... Figure 1 The more or fewer components shown, or having the same Figure 1 The different configurations shown.

[0025] It should be noted that the aforementioned one or more processors and / or other data processing circuits are generally referred to herein as "data processing circuits". These data processing circuits may be embodied, in whole or in part, in software, hardware, firmware, or any other combination thereof. Furthermore, the data processing circuits may be a single, independent processing module, or may be integrated, in whole or in part, into any other element within the computer terminal 10. As involved in the embodiments of this application, the data processing circuits serve as a processor control mechanism (e.g., selection of a variable resistor termination path connected to an interface).

[0026] The memory 104 can be used to store software programs and modules for application software, such as the program instructions / data storage device corresponding to the power regulation method for a fuel cell vehicle in this embodiment of the invention. The processor executes various functional applications and data processing by running the software programs and modules stored in the memory 104, thereby implementing the power regulation method for the fuel cell vehicle described above. The memory 104 may include high-speed random access memory and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 104 may further include memory remotely located relative to the processor, and these remote memories can be connected to the computer terminal 10 via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0027] The display can be, for example, a touchscreen liquid crystal display (LCD) that allows the user to interact with the user interface of the computer terminal 10.

[0028] Figure 2 This is a schematic flowchart of a power regulation method for a fuel cell vehicle provided according to an embodiment of the present invention, as shown below. Figure 2 As shown, the method includes the following steps:

[0029] Step S202: Obtain the total power requirement of the fuel cell vehicle.

[0030] In this step, after the fuel cell vehicle starts, the fuel cell system will execute the start-up command normally. Once start-up is complete, the fuel cell system will send a start-up completion command to the vehicle. After receiving the start-up completion command, the vehicle will enter the power adjustment phase. At this time, the vehicle's required power can be obtained, facilitating subsequent power adjustment.

[0031] Step S204: Based on the overall vehicle power demand and the performance of the fuel cell in the fuel cell vehicle, determine the required power value for the corresponding load of the fuel cell vehicle.

[0032] In this step, the current performance of the fuel cell can include state parameters such as the health status of the stack, temperature, pressure, and humidity, as well as fuel supply (e.g., hydrogen flow rate and purity), catalyst activity, and electrochemical reaction efficiency. By combining the fuel cell's voltage-current characteristic curve (i.e., voltage-current relationship) with the current performance assessment, the required power for load testing can be determined. The required power for load testing refers to the power output of the fuel cell system under specific operating conditions to meet the overall power requirements of a fuel cell vehicle (or any system that relies on a fuel cell as a power source).

[0033] Step S206: Determine the load current value based on the required load power value.

[0034] In this step, the volt-ampere characteristic curve of the fuel cell describes the voltage and output power generated by the fuel cell under different currents. This curve is the basis for fuel cell design and calibration, providing performance data of the stack under different operating conditions. The corresponding voltage can be found from the volt-ampere characteristic curve based on the required power at load. Then, based on the required power and voltage at load, the required current can be calculated using basic electrical formulas.

[0035] Specifically, when the fuel cell system receives a load-pull command, it will look up the required load power value and convert it into the required load current.

[0036] Step S208: Obtain the actual power of the fuel cell by adjusting the output current of the fuel cell to reach the load current value.

[0037] This step ensures that the fuel cell's output current has been adjusted to the calculated load current value, i.e., it has reached a steady state. This is typically accomplished by the fuel cell controller receiving and executing commands from the vehicle control system. The fuel cell's output voltage can be monitored in real time using a voltage sensor. The fuel cell's output voltage varies with current; therefore, the corresponding voltage value when the output current reaches the load current value should also be the result of real-time monitoring. Once the output current and output voltage are confirmed, the actual power output of the fuel cell can be calculated.

[0038] The actual power output can also take into account the efficiency of the entire power electronic system (such as DC / DC converters, inverters, etc.). System efficiency is not always 100%, so the actual power reaching the load will be less than the power directly output by the fuel cell, and therefore can be corrected.

[0039] Step S210: Based on the difference between the actual power and the power required by the vehicle, the output current of the fuel cell is adjusted to adjust the actual power of the fuel cell.

[0040] In this step, adjusting the fuel cell output current based on the difference between the actual power and the vehicle's required power ensures that the fuel cell system can stably and efficiently meet the vehicle's power demands. Comparing the actual power with the vehicle's required power allows for the calculation of the difference. Based on this difference, it is determined whether the actual power is lower or higher than the vehicle's required power. Then, depending on the direction and magnitude of the difference, different current adjustment strategies are used to regulate the fuel cell's power output.

[0041] During current adjustment, considering the response time of the fuel cell system and to avoid system instability caused by frequent current fluctuations, hysteresis control is typically introduced (i.e., waiting for a certain period before initiating a new adjustment). Furthermore, to protect the fuel cell and prevent the current from exceeding its safe operating range, upper and lower current limits are set. The adjusted fuel cell output current and voltage are continuously monitored to calculate the new actual power output. If the difference between the actual power and the required power still exceeds the allowable range, the system will readjust the current until the power output stabilizes within the required range.

[0042] Based on long-term operating data, current adjustment strategies can be optimized, such as improving hysteresis time, adjusting the rate of change of current, and optimizing the upper and lower limits of current, in order to improve the response speed and energy efficiency of fuel cell systems.

[0043] Through the above steps, the fuel cell's output current will be dynamically adjusted based on the difference between the actual power and the required power, thereby achieving precise tracking of the vehicle's power demand and ensuring the smooth operation and efficient energy management of the entire fuel cell power system. This precise control and feedback mechanism is an indispensable component of fuel cell vehicle power control.

[0044] Through the above steps, the output power can be adjusted more quickly and accurately according to the state of the fuel cell, thereby improving the stability of the output power and making it closer to the power required by the vehicle. This solves the technical problem that the unstable output power of the fuel cell leads to a gap with the actual power requirement, causing the lithium battery to discharge rapidly and affecting the vehicle performance.

[0045] As an optional embodiment, the output current of the fuel cell is adjusted based on the difference between the actual power and the power required by the vehicle, including at least one of the following: reducing the output current of the fuel cell when the difference between the actual power and the power required by the vehicle exceeds a first preset threshold; increasing the output current of the fuel cell when the difference between the actual power and the power required by the vehicle is lower than a second preset threshold; and controlling the output current of the fuel cell to remain unchanged when the difference between the actual power and the power required by the vehicle does not exceed the first preset threshold and is not lower than the second preset threshold.

[0046] Optionally, when the actual power output exceeds the vehicle's required power, and the difference exceeds a first preset threshold (e.g., the first preset threshold is a positive number representing an allowable deviation from the required power), this means that the fuel cell system is outputting power beyond demand, potentially leading to energy waste or overcharging of other system loads (such as the battery). In this case, the control system will reduce the fuel cell's output current to decrease its power output. This process should be gradual to avoid impacting the fuel cell stack and DC / DC converter.

[0047] If the actual power output is lower than the vehicle's required power, and the difference is lower than the second preset threshold (the second preset threshold is negative, representing an allowable deviation below the required power), this indicates that the power output of the fuel cell system is insufficient to meet the vehicle's needs and may affect vehicle performance. In this case, the control system will increase the fuel cell's output current to improve its power output until it reaches the required power or approaches the preset power deviation range.

[0048] When the difference between the actual power and the vehicle's required power is between two preset thresholds—that is, neither exceeding the first preset threshold nor falling below the second preset threshold—it indicates that the fuel cell system's current power output is basically matched with the demand. At this point, the control system will maintain the fuel cell's output current unchanged to preserve the current power output level and ensure stable system operation.

[0049] The selection of the first and second preset thresholds can comprehensively consider the characteristics of the fuel cell stack, the performance requirements of the vehicle, and the system's response speed and stability. Setting the threshold too low may lead to frequent system adjustments, increasing energy loss and control complexity; setting it too high will reduce response speed and control accuracy, potentially affecting vehicle performance and energy efficiency.

[0050] Specifically, the conditions for determining whether there is a deviation between the actual power of the fuel cell and the power required by the vehicle are as follows:

[0051] Positive deviation: (Actual power - Target power) / Target power > Maximum permissible deviation;

[0052] Negative deviation: (Target power - Actual power) / Target power > Maximum permissible deviation;

[0053] No significant deviation: |Actual power - Target power| / Target power ≤ Maximum permissible deviation.

[0054] When a positive deviation exists, the power is adjusted downwards. Specifically, the load current is periodically adjusted downwards until the power deviation is negligible, at which point the current stabilizes. When a negative deviation exists, the power is adjusted upwards. Specifically, the load current is periodically adjusted upwards until the power deviation is negligible, at which point the current stabilizes. When the power deviation is negligible, the current load current remains constant. The maximum permissible deviation is the maximum allowable error in the vehicle's required power output, expressed as a percentage (%).

[0055] In this optional embodiment, regarding the optimization of the fuel cell power response algorithm, a strategy is proposed to adjust the fuel cell output current based on the deviation value when a deviation between the actual power and the vehicle's required power is detected. Specifically, when the actual power exceeds a first preset threshold of the vehicle's required power, the algorithm automatically reduces the fuel cell output current to decrease the actual power until the deviation returns to an acceptable range. Conversely, when the actual power is lower than a second preset threshold of the vehicle's required power, the actual power is increased by increasing the fuel cell output current until the requirement is met. When the difference between the actual power and the vehicle's required power is neither greater than the first preset threshold nor lower than the second preset threshold, the fuel cell output current is kept constant to ensure stable operation of the system within an acceptable power deviation range. This strategy, by monitoring the power deviation in real time and dynamically adjusting the output current, can effectively address voltage fluctuations in the fuel cell caused by material batches, electrochemical reaction conditions, environmental factors, etc., and can also quickly respond to changes in the vehicle's power demand, ensuring the stability and efficiency of the fuel cell system, thereby improving the energy management and performance of the vehicle. In various implementation scenarios, this strategy ensures that fuel cells can still provide stable and expected power output when facing different environmental conditions and power demands.

[0056] As an optional embodiment, adjusting the output current of the fuel cell based on the difference between the actual power and the power required by the vehicle includes: obtaining the actual voltage of the fuel cell; determining a single adjustment current value based on the actual power, the power required by the vehicle, and the actual voltage; and adjusting the output current of the fuel cell based on the single adjustment current value.

[0057] Optionally, the actual voltage of the fuel cell can be obtained in real time through a voltage sensor. Voltage is a direct reflection of the fuel cell stack state and also affects the calculation of actual power. Obtaining accurate voltage data is crucial before adjusting the output current. Based on the actual power, the vehicle's required power, and the actual voltage, the single-adjustment current value is determined. Specifically, the single-adjustment current value can be calculated based on the difference between the current actual voltage and power. For example, the absolute value of the difference between the vehicle's required power and the actual power can be divided by the current voltage of the fuel cell to obtain the magnitude of the single-adjustment current.

[0058] Optionally, when calculating the single adjustment current value, the output characteristics of the fuel cell, the system response speed, and the need to avoid over-adjustment that could cause system instability must also be considered. Specifically, the larger the power difference, the larger the adjustment current may be, but it is necessary to avoid impacting the system.

[0059] This alternative embodiment dynamically adjusts the fuel cell output to precisely match the power required by the vehicle. First, by monitoring the actual voltage of the fuel cell and combining its current actual power with the vehicle's set power demand, an appropriate single-cycle adjustment current value is calculated. Then, based on this adjustment, the fuel cell's output current can be automatically fine-tuned, thereby regulating its output power. This closed-loop control mechanism can quickly respond to changes in power demand, effectively compensating for fuel cell performance fluctuations caused by batch differences in materials, fluctuations in electrochemical reaction efficiency, and environmental changes, ensuring the stability and matching degree of output power. In implementation, this method not only improves the fuel cell's response speed to the vehicle's power demands but also significantly enhances the system's environmental adaptability and long-term operational reliability, avoiding problems such as energy management strategy failure or lithium battery over-discharge due to power instability.

[0060] As an optional embodiment, when the vehicle's power demand changes, a new load-bearing power is determined based on the changed vehicle power demand; a new load-bearing current value is determined based on the new load-bearing power; the current output current of the fuel cell is obtained; a target adjustment current value is determined based on the current output current of the fuel cell and the new load-bearing current value; the actual power of the fuel cell is obtained when the fuel cell's output current is adjusted to reach the target adjustment current value; and the actual power of the fuel cell is adjusted by adjusting the fuel cell's output current based on the difference between the actual power and the vehicle's power demand.

[0061] Optionally, when the vehicle's operating state changes (such as acceleration, deceleration, or hill climbing), its power demand will also change accordingly. In this case, the vehicle's requested power will change, typically calculated by the vehicle controller based on driver commands and vehicle driving conditions. Using the fuel cell system's volt-ampere characteristic curve or its internal power-to-current conversion model, the control unit converts the new load-required power into the corresponding target output current. This conversion needs to consider the fuel cell's current operating state, including temperature, humidity, and stack condition, to ensure that the output current setting is reasonable and safe. The current output current is compared to the target output current, and the difference between the two is calculated; this is the target adjustment current value. If the new load current value is greater than the current output current, the target adjustment current value is positive; otherwise, it is negative. The target adjustment current value guides the direction and magnitude of the fuel cell output current adjustment.

[0062] Based on the calculated target current value, the output current can be gradually adjusted until the new load current value is reached. This process should be carried out smoothly to avoid sudden changes in current that could impact the fuel cell stack.

[0063] After the output current is adjusted to the new target, the actual power output of the fuel cell is calculated by monitoring the fuel cell's output voltage and the new output current in real time. This step confirms whether the system has successfully adjusted to the new power demand level. After each adjustment, there is a periodic waiting period to allow sufficient time for each subsystem to stabilize after the fuel cell undergoes load changes.

[0064] The system can continuously monitor the difference between the actual power and the changed vehicle power demand. If the difference still exceeds the preset power deviation range, the control system will continue to adjust the fuel cell output current according to the magnitude and direction of the difference until the actual power output stabilizes within the allowable deviation range of the vehicle's power demand.

[0065] In this optional embodiment, by continuously monitoring the difference between the actual power and the power demanded by the vehicle, the system can adjust the output current of the fuel cell in real time, thereby finely controlling the actual power of the fuel cell to ensure that it always remains consistent with the vehicle's requirements. This algorithm not only enhances the power response speed and accuracy of the fuel cell system, but also effectively addresses the power fluctuation problem caused by changes in the inherent characteristics of the fuel cell and the external environment, enabling the fuel cell system to operate more stably and efficiently under variable load conditions.

[0066] The above steps improve the stability of power output, effectively overcome the power fluctuations caused by changes in the characteristics of the fuel cell itself and external conditions, enable the fuel cell system to respond more efficiently to the needs of the vehicle during load changes, and improve the power response rate of the fuel cell system.

[0067] As an optional embodiment, the target adjustment current value is determined based on the current output current of the fuel cell and the new load current value, including: when the vehicle power demand increases, selecting the maximum value between the current output current of the fuel cell and the new load current value as the target adjustment current value; and / or, when the vehicle power demand decreases, selecting the minimum value between the current output current of the fuel cell and the new load current value as the target adjustment current value.

[0068] Optionally, when the vehicle's power demand increases, the fuel cell system needs to rapidly increase its power output to meet the higher energy demand. A new load current value can be calculated based on the new power demand and the fuel cell's current-voltage characteristic curve. The current output current value of the fuel cell is obtained and compared with the new load current value. If the new load current value is greater than the current output current value, it will be selected as the target adjustment current value; otherwise, the current output current value will be used as the target adjustment current value. This strategy ensures that the fuel cell system can respond immediately to increased power demand, rapidly increasing power output by increasing the output current, avoiding power interruption or response lag.

[0069] When the vehicle's power demand decreases, the fuel cell system should be able to quickly reduce its power output to improve energy efficiency and reduce energy waste. A new load current value is calculated based on the new power demand. The current output current value of the fuel cell is obtained. If the new load current value is less than the current output current value, the new load current value is selected as the target adjustment current value; otherwise, the current output current value is used as the target adjustment current value. This strategy ensures that the fuel cell system does not over-output power when the power demand decreases, thereby avoiding energy waste and maintaining stable system operation.

[0070] This optional embodiment ensures that the fuel cell system responds to the vehicle's power demand more efficiently during load changes, avoiding overshoot and undershoot during power response, and guaranteeing the smooth operation of the system and the stability of the vehicle's power performance. By implementing the technical solution of this invention, the power response rate of the fuel cell system is significantly improved, while ensuring the stability of the output power during power regulation, thereby achieving precise tracking of the vehicle's power demand and optimizing the execution effect of the vehicle's hybrid system energy management strategy.

[0071] As an optional embodiment, after adjusting the output current of the fuel cell based on the difference between the actual power and the power required by the vehicle, the actual power of the fuel cell is obtained again after a preset time.

[0072] Optionally, the fuel cell system incorporates a power adaptive adjustment mechanism. When a difference is detected between the actual power and the vehicle's required power, the system dynamically adjusts the fuel cell's output current based on the magnitude of the difference to correct the power deviation. This adjustment process is not instantaneous; instead, after a preset time interval, the actual power of the fuel cell is measured again to ensure the adjustment effect meets expectations and avoids power output instability caused by environmental changes, battery performance fluctuations, or other factors. Through periodic fine-tuning, the system can continuously monitor and promptly correct power deviations, ensuring precise matching of the fuel cell's output power, enhancing the stability and reliability of the fuel cell system, and thus improving the vehicle's operating efficiency and driving experience. In subsequent power adjustments, this mechanism ensures that the fuel cell can continuously respond to the vehicle's power demands, maintaining within the allowable power deviation range, thereby optimizing the execution effect of the energy management strategy. In embodiments not explicitly shown in the accompanying drawings, the preset time interval and adjustment range can be adjusted according to specific application scenarios to adapt to the real-time and accuracy requirements of the vehicle's response to the fuel cell power under different operating conditions.

[0073] As an optional embodiment, the output current of the fuel cell is adjusted to obtain an adjusted output current; it is determined whether the adjusted output current is outside the preset safe current range; if the adjusted output current is outside the preset safe current range, a warning prompt is generated.

[0074] Optionally, after adjusting the output current of the fuel cell, it is further determined whether the adjusted output current is outside the preset safe current range. This technical solution ensures that the fuel cell system does not exceed its safe operating current boundary during power regulation, thereby avoiding potential damage to the fuel cell stack or other system components. By monitoring and comparing the adjusted output current with the safe current range in real time, once the output current is detected to exceed the preset safe range, the system will generate an early warning prompt, promptly notifying the control system to take corresponding adjustments or protective measures to ensure the stable operation of the fuel cell system and extend its service life. In practical applications, this early warning mechanism can effectively prevent system failures or performance degradation caused by over-adjustment during power regulation, improving the overall safety and reliability of the fuel cell power system. Of course, the generation of the early warning prompt and its subsequent processing logic can be adjusted according to specific application scenarios and safety strategies to achieve more refined current control and system protection.

[0075] It should be noted that, for the sake of simplicity, the foregoing method embodiments are all described as a series of actions. However, those skilled in the art should understand that the present invention is not limited to the described order of actions, because according to the present invention, some steps can be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0076] Through the above description of the embodiments, those skilled in the art can clearly understand that the power regulation method for fuel cell vehicles according to the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, it can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0077] According to embodiments of the present invention, a power regulation device for a fuel cell vehicle for implementing the power regulation method of the above-described fuel cell vehicle is also provided. Figure 3 This is a structural block diagram of a power regulation device for a fuel cell vehicle according to an embodiment of the present invention, such as... Figure 3 As shown, the power regulation device of the fuel cell vehicle includes: a first acquisition module 302, a first determination module 304, a second determination module 306, a second acquisition module 308, and an adjustment module 310. The power regulation device of the fuel cell vehicle will be described below.

[0078] The first acquisition module 302 is used to acquire the total power demand of the fuel cell vehicle.

[0079] The first determining module 304, connected to the first acquiring module 302, is used to determine the required load power value for the fuel cell vehicle based on the overall vehicle power demand and the performance of the fuel cell in the fuel cell vehicle.

[0080] The second determining module 306, connected to the first determining module 304, is used to determine the load current value based on the required load power value.

[0081] The second acquisition module 308, connected to the second determination module 306, is used to acquire the actual power of the fuel cell when the output current of the fuel cell is adjusted to reach the load current value.

[0082] The adjustment module 310, connected to the second acquisition module 308, is used to adjust the actual power of the fuel cell by adjusting the output current of the fuel cell based on the difference between the actual power and the power required by the vehicle.

[0083] It should be noted that the first acquisition module 302, the first determination module 304, the second determination module 306, the second acquisition module 308, and the adjustment module 310 mentioned above correspond to steps S202 to S210 in the embodiments. Multiple modules implement the same instances and application scenarios as their corresponding steps, but are not limited to the content disclosed in the above embodiments. It should also be noted that the above modules, as part of the device, can run in the computer terminal 10 provided in the embodiments.

[0084] Embodiments of the present invention may provide a computer device. Optionally, in this embodiment, the computer device may be located in at least one of a plurality of network devices in a computer network. The computer device includes a memory and a processor.

[0085] The memory can be used to store software programs and modules, such as the program instructions / modules corresponding to the power regulation method and device for fuel cell vehicles in this embodiment of the invention. The processor executes various functional applications and data processing by running the software programs and modules stored in the memory, thereby realizing the aforementioned power regulation method for fuel cell vehicles. The memory may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory may further include memory remotely located relative to the processor, and these remote memories can be connected to a computer terminal via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0086] The processor can access the information and application programs stored in the memory via the transmission device to perform the following steps: obtain the total power demand of the fuel cell vehicle; determine the required load power value for the fuel cell vehicle based on the total power demand and the performance of the fuel cell in the fuel cell vehicle; determine the load current value based on the required load power value; obtain the actual power of the fuel cell by adjusting the output current of the fuel cell to reach the load current value; and adjust the actual power of the fuel cell by adjusting the output current of the fuel cell based on the difference between the actual power and the total power demand of the vehicle.

[0087] Optionally, the processor may also execute program code that performs the following steps: adjusting the output current of the fuel cell based on the difference between the actual power and the power demand of the vehicle, including at least one of the following: reducing the output current of the fuel cell when the difference between the actual power and the power demand of the vehicle exceeds a first preset threshold; increasing the output current of the fuel cell when the difference between the actual power and the power demand of the vehicle is lower than a second preset threshold; and controlling the output current of the fuel cell to remain unchanged when the difference between the actual power and the power demand of the vehicle does not exceed the first preset threshold and is not lower than the second preset threshold.

[0088] Optionally, the processor may also execute program code that performs the following steps: adjusting the output current of the fuel cell based on the difference between the actual power and the power required by the vehicle, including: obtaining the actual voltage of the fuel cell; determining a single adjustment current value based on the actual power, the power required by the vehicle, and the actual voltage; and adjusting the output current of the fuel cell based on the single adjustment current value.

[0089] Optionally, the processor may also execute program code for the following steps: when the vehicle's power demand changes, determine the new load-bearing power required based on the changed vehicle power demand; determine a new load-bearing current value based on the new load-bearing power required; obtain the current output current of the fuel cell; determine a target adjustment current value based on the current output current of the fuel cell and the new load-bearing current value; obtain the actual power of the fuel cell when the fuel cell's output current is adjusted to reach the target adjustment current value; and adjust the actual power of the fuel cell by adjusting the fuel cell's output current based on the difference between the actual power and the vehicle's power demand.

[0090] Optionally, the processor may also execute program code that performs the following steps: determining a target adjustment current value based on the current output current of the fuel cell and the new load current value, including: when the vehicle power demand increases, selecting the maximum value between the current output current of the fuel cell and the new load current value as the target adjustment current value; and / or, when the vehicle power demand decreases, selecting the minimum value between the current output current of the fuel cell and the new load current value as the target adjustment current value.

[0091] Optionally, the processor may also execute program code that performs the following steps: after adjusting the output current of the fuel cell based on the difference between the actual power and the power required by the vehicle, and after a preset time, the actual power of the fuel cell is obtained again.

[0092] Optionally, the processor may also execute program code that performs the following steps: adjusts the output current of the fuel cell to obtain an adjusted output current; determines whether the adjusted output current is outside the preset safe current range; and generates a warning message if the adjusted output current is outside the preset safe current range.

[0093] This invention provides a power regulation method for fuel cell vehicles. The method involves: acquiring the vehicle's total power requirement; determining the required load power based on the total power requirement and the performance of the fuel cell; determining the load current based on the required load power; obtaining the actual power of the fuel cell by adjusting its output current to the load current value; and adjusting the fuel cell's output current based on the difference between the actual power and the total power requirement to adjust the actual power. This achieves the goal of adjusting the output power more quickly and accurately according to the fuel cell's state, thereby improving the stability of the output power and making it closer to the vehicle's total power requirement. This solves the current technical problem of unstable fuel cell output power leading to a gap between the actual power requirement and the actual power requirement, causing rapid discharge of the lithium battery and affecting vehicle performance.

[0094] Those skilled in the art will understand that all or part of the steps in the various methods of the above embodiments can be implemented by a program instructing the hardware related to the terminal device. The program can be stored in a non-volatile storage medium, which may include: flash drive, read-only memory (ROM), random access memory (RAM), disk or optical disk, etc.

[0095] Embodiments of the present invention also provide a non-volatile storage medium. Optionally, in this embodiment, the aforementioned non-volatile storage medium can be used to store the program code executed by the power regulation method of the fuel cell vehicle provided in the above embodiments.

[0096] Optionally, in this embodiment, the non-volatile storage medium may be located in any computer terminal in a group of computer terminals in a computer network, or in any mobile terminal in a group of mobile terminals.

[0097] Optionally, in this embodiment, the non-volatile storage medium is configured to store program code for performing the following steps: obtaining the total power demand of the fuel cell vehicle; determining the load-bearing power value corresponding to the fuel cell vehicle based on the total power demand and the performance of the fuel cell in the fuel cell vehicle; determining the load-bearing current value based on the load-bearing power value; obtaining the actual power of the fuel cell by adjusting the output current of the fuel cell to reach the load-bearing current value; and adjusting the actual power of the fuel cell by adjusting the output current of the fuel cell based on the difference between the actual power and the total power demand.

[0098] Optionally, in this embodiment, the non-volatile storage medium is configured to store program code for performing the following steps: adjusting the output current of the fuel cell based on the difference between the actual power and the power demand of the vehicle, including at least one of the following: reducing the output current of the fuel cell when the difference between the actual power and the power demand of the vehicle exceeds a first preset threshold; increasing the output current of the fuel cell when the difference between the actual power and the power demand of the vehicle is lower than a second preset threshold; and controlling the output current of the fuel cell to remain unchanged when the difference between the actual power and the power demand of the vehicle does not exceed the first preset threshold and is not lower than the second preset threshold.

[0099] Optionally, in this embodiment, the non-volatile storage medium is configured to store program code for performing the following steps: adjusting the output current of the fuel cell based on the difference between the actual power and the vehicle's required power, including: obtaining the actual voltage of the fuel cell; determining a single adjustment current value based on the actual power, the vehicle's required power, and the actual voltage; and adjusting the output current of the fuel cell based on the single adjustment current value.

[0100] Optionally, in this embodiment, the non-volatile storage medium is configured to store program code for performing the following steps: when the vehicle's power demand changes, determine the new load-bearing power required based on the changed vehicle power demand; determine a new load-bearing current value based on the new load-bearing power required; obtain the current output current of the fuel cell; determine a target adjustment current value based on the current output current of the fuel cell and the new load-bearing current value; obtain the actual power of the fuel cell when the output current of the fuel cell is adjusted to reach the target adjustment current value; and adjust the actual power of the fuel cell by adjusting the output current of the fuel cell based on the difference between the actual power and the vehicle's power demand.

[0101] Optionally, in this embodiment, the non-volatile storage medium is configured to store program code for performing the following steps: determining a target adjustment current value based on the current output current of the fuel cell and the new load current value, including: when the vehicle power demand increases, selecting the maximum value between the current output current of the fuel cell and the new load current value as the target adjustment current value; and / or, when the vehicle power demand decreases, selecting the minimum value between the current output current of the fuel cell and the new load current value as the target adjustment current value.

[0102] Optionally, in this embodiment, the non-volatile storage medium is configured to store program code for performing the following steps: after adjusting the output current of the fuel cell based on the difference between the actual power and the power required by the vehicle, the actual power of the fuel cell is obtained again after a preset time.

[0103] Optionally, in this embodiment, the non-volatile storage medium is configured to store program code for performing the following steps: adjusting the output current of the fuel cell to obtain an adjusted output current; determining whether the adjusted output current is outside a preset safe current range; and generating a warning prompt if the adjusted output current is outside the preset safe current range.

[0104] Embodiments of the present invention also provide a computer program product, including a computer program. Optionally, in this embodiment, when the computer program is executed by a processor, it can: acquire the total power demand of a fuel cell vehicle; determine the load-bearing power value corresponding to the fuel cell vehicle based on the total power demand and the performance of the fuel cell in the fuel cell vehicle; determine the load-bearing current value based on the load-bearing power value; acquire the actual power of the fuel cell by adjusting the output current of the fuel cell to reach the load-bearing current value; and adjust the actual power of the fuel cell by adjusting the output current of the fuel cell based on the difference between the actual power and the total power demand of the vehicle.

[0105] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0106] In the above embodiments of the present invention, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0107] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0108] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0109] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0110] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a non-volatile storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0111] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A power regulation method for a fuel cell vehicle, characterized in that, include: Obtain the total power requirement of fuel cell vehicles; Based on the overall vehicle power requirement and the performance of the fuel cell in the fuel cell vehicle, determine the required load power value for the corresponding fuel cell vehicle. Based on the power value required for the load, determine the load current value; The actual power of the fuel cell is obtained by adjusting the output current of the fuel cell to reach the load current value; Based on the difference between the actual power and the required power of the vehicle, the actual power of the fuel cell is adjusted by adjusting the output current of the fuel cell. The step of adjusting the output current of the fuel cell based on the difference between the actual power and the vehicle's required power includes: Obtain the actual voltage of the fuel cell; The single adjustment current value is determined based on the actual power, the required power of the vehicle, and the actual voltage. The output current of the fuel cell is adjusted based on the single adjustment current value; The above method also includes: when the total vehicle power demand changes, determining the new power required for hauling load based on the changed total vehicle power demand; Based on the new power required for the load, determine the new load current value; Obtain the current output current of the fuel cell; Based on the current output current of the fuel cell and the new load current value, determine the target adjustment current value; The actual power of the fuel cell is obtained by adjusting the output current of the fuel cell to reach the target adjustment current value; Based on the difference between the actual power and the required power of the vehicle, the actual power of the fuel cell is adjusted by adjusting the output current of the fuel cell. Determining the target adjustment current value based on the current output current of the fuel cell and the new load current value includes: When the power demand of the vehicle increases, the maximum value between the current output current of the fuel cell and the new load current value is selected as the target adjustment current value. And / or, when the overall vehicle power demand decreases, the minimum value between the current output current of the fuel cell and the new load current value is selected as the target adjustment current value.

2. The method according to claim 1, characterized in that, Adjusting the output current of the fuel cell based on the difference between the actual power and the vehicle's required power includes at least one of the following: If the difference between the actual power and the vehicle's required power exceeds a first preset threshold, the output current of the fuel cell is reduced. If the difference between the actual power and the vehicle's required power is lower than a second preset threshold, the output current of the fuel cell is increased. If the difference between the actual power and the required power of the vehicle does not exceed the first preset threshold and is not lower than the second preset threshold, the output current of the fuel cell is controlled to remain unchanged.

3. The method according to claim 1, characterized in that, Also includes: After adjusting the output current of the fuel cell based on the difference between the actual power and the required power of the vehicle, and after a preset time, the actual power of the fuel cell is obtained again.

4. The method according to any one of claims 1 to 3, characterized in that, Also includes: The output current of the fuel cell is adjusted to obtain the adjusted output current; Determine whether the adjusted output current is outside the preset safe current range; If the adjusted output current is outside the preset safe current range, a warning message will be generated.

5. A power regulation device for a fuel cell vehicle, characterized in that, include: The first acquisition module is used to acquire the total power demand of the fuel cell vehicle; The first determining module is used to determine the required load power value of the fuel cell vehicle based on the total vehicle power demand and the performance of the fuel cell in the fuel cell vehicle. The second determining module is used to determine the load current value based on the required load power value; The second acquisition module is used to acquire the actual power of the fuel cell when the output current of the fuel cell is adjusted to reach the load current value. An adjustment module is used to adjust the actual power of the fuel cell by adjusting the output current of the fuel cell based on the difference between the actual power and the power required by the vehicle. The adjustment module is used to acquire the actual voltage of the fuel cell; determine a single adjustment current value based on the actual power, the vehicle's required power, and the actual voltage; and adjust the output current of the fuel cell based on the single adjustment current value. The aforementioned device is further configured to: determine a new load-bearing power requirement based on the changed vehicle power demand when the vehicle's power demand changes; determine a new load-bearing current value based on the new load-bearing power requirement; obtain the current output current of the fuel cell; determine a target adjustment current value based on the current output current of the fuel cell and the new load-bearing current value; obtain the actual power of the fuel cell when the output current of the fuel cell is adjusted to reach the target adjustment current value; adjust the actual power of the fuel cell by adjusting the output current of the fuel cell based on the difference between the actual power and the vehicle power demand; wherein determining the target adjustment current value based on the current output current of the fuel cell and the new load-bearing current value includes: selecting the maximum value between the current output current of the fuel cell and the new load-bearing current value as the target adjustment current value when the vehicle power demand increases; and / or selecting the minimum value between the current output current of the fuel cell and the new load-bearing current value as the target adjustment current value when the vehicle power demand decreases.

6. A non-volatile storage medium, characterized in that, The non-volatile storage medium includes a stored program, wherein, when the program is executed, the device containing the non-volatile storage medium is controlled to perform the power regulation method of the fuel cell vehicle according to any one of claims 1 to 4.

7. A computer device, characterized in that, include: Memory and processor The memory stores computer programs; The processor is configured to execute a computer program stored in the memory, wherein when the computer program is executed, the processor performs the power regulation method of the fuel cell vehicle according to any one of claims 1 to 4.

8. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the power regulation method for the fuel cell vehicle according to any one of claims 1 to 4.

Images