Power distribution method and equipment of multi-hydrogen stack fuel cell and medium

Abstract

The invention discloses a multi-hydrogen-stack fuel cell power distribution method and device and a medium, and relates to the technical field of cell system power management, and the method comprises the steps: obtaining a generation power interval corresponding to an optimal efficiency interval of each hydrogen fuel cell; calculating the cumulative running time of each hydrogen fuel cell based on the determined priority; under the condition of determining that the current total demand power is changed compared with the previous total demand power, taking the current total demand power, the number of the hydrogen fuel cells running at the ith moment, the priority, the power generation power interval and the minimum load fluctuation of the hydrogen fuel cells as a power distribution target, and determining a target power distribution strategy to perform power distribution of the hydrogen fuel cell. The method is used for solving the problem that the service life of the hydrogen fuel cell is shortened due to the fact that the generated power of the hydrogen fuel cell fluctuates violently in the prior art, and the service life of the hydrogen fuel cell is prolonged under the condition that the multi-hydrogen-stack fuel cell meets the system requirement.

Description

Technical Field

[0001] This application relates to the field of battery system power management technology, and in particular to a power distribution method, device and medium for multi-hydrogen stack fuel cells. Background Technology

[0002] In hydrogen-electric hybrid locomotives or large commercial vehicles, a single hydrogen fuel cell stack cannot meet the system's power requirements, necessitating the joint operation of multiple hydrogen stacks. Existing technologies employ various power allocation methods for multi-hydrogen stack systems to achieve this collaborative operation. For example, the power output of each hydrogen stack is controlled by minimizing the equivalent value loss during system operation; another method combines the fuel cell system's operating characteristics with the hydrogen content in the storage tank to control the power output of each stack; yet another method uses the minimum total hydrogen consumption constraint to solve for the total power allocation of the fuel cell system, with the power of each stack distributed evenly to control its power output.

[0003] However, current technologies only focus on the power output of each hydrogen fuel cell stack and consider its lifespan. Excessive or insufficient power output accelerates the aging of the catalyst and membrane, leading to a decline in the stack's lifespan. Furthermore, frequent dynamic load fluctuations can cause drastic changes in stack current and potential, accelerating catalyst dissolution and mechanical damage to the membrane, thus affecting the lifespan of the hydrogen fuel cell. Summary of the Invention

[0004] In response to the aforementioned problems and technical requirements, the applicant proposes a power distribution method, device, and medium for multi-hydrogen stack fuel cells to solve the problem of drastic fluctuations in the power generation of hydrogen fuel cells in the prior art, which leads to a reduction in the lifespan of hydrogen fuel cells. This aims to improve the lifespan of hydrogen fuel cells while ensuring that multi-hydrogen stack fuel cells meet system requirements.

[0005] This application provides a power distribution method for multi-hydrogen stack fuel cells, the method comprising: Obtain the power generation range [P1, P2] corresponding to the optimal efficiency range of each hydrogen fuel cell; For each hydrogen fuel cell, the following cumulative operating time calculation process is performed: obtain the power generation of the hydrogen fuel cell at time i+1; calculate the deviation coefficient based on the power generation and the power generation range; correct the unit operating time based on the deviation coefficient and sum the corrected unit operating times to obtain the cumulative operating time, wherein the cumulative operating time is used to determine the priority of the hydrogen fuel cell; Obtain the first total power demand of the hydrogen fuel cell at time i+1. And the second total power demand of the hydrogen fuel cell at time i. ; Given that the first total power demand changes compared to the second total power demand, the number of hydrogen fuel cells operating at time i is determined based on the first total power demand. The priority, the power generation range, and the minimum load fluctuation of the hydrogen fuel cell are used as the power allocation targets to determine the target power allocation strategy for the hydrogen fuel cell.

[0006] According to the power allocation method for multi-hydrogen stack fuel cells provided in the embodiments of this application, the change in the first total demand power compared to the second total demand power includes: the first total demand power being greater than the second total demand power; Based on the first total power demand, the number of hydrogen fuel cells operating at time i, the priority, the power generation range, and minimizing the load fluctuation of the hydrogen fuel cells as the power allocation target, a target power allocation strategy is determined to allocate power to the hydrogen fuel cells, including: based on P1 and P2 are used to determine the judgment threshold, wherein the judgment threshold includes: and ; exist Greater than In the case of, based on The total number of hydrogen fuel cells N in the vehicle, the priority, and the minimum load fluctuation of the hydrogen fuel cells are used as the power allocation targets to determine the target power allocation strategy for the hydrogen fuel cells. exist Less than or equal to and greater than In the case of prioritization and minimizing the load fluctuation of the hydrogen fuel cell as the power allocation target, a target power allocation strategy is determined to allocate power to the hydrogen fuel cell. exist Less than or equal to In this case, based on the priority and minimizing the load fluctuation of the hydrogen fuel cell as the power allocation target, a target power allocation strategy is determined to allocate power to the hydrogen fuel cell.

[0007] According to the power distribution method for multi-hydrogen stack fuel cells provided in the embodiments of this application, in Greater than In the case of, based on The total number of hydrogen fuel cells N in the vehicle, the priority, and minimizing the load fluctuation of the hydrogen fuel cells are used as the power allocation targets. A target power allocation strategy is determined to allocate power to the hydrogen fuel cells, including: exist Greater than In the case of, judge Is it equal to N? like Given N, sort the power generation capacity from smallest to largest, and based on the sorting result... Each hydrogen fuel cell distributes its power generation P2, which is... Each hydrogen fuel cell distributes power generation. ,in, based on and get; like Less than N, and Less than ,for Each hydrogen fuel cell is allocated power generation P2, and new hydrogen fuel cells are started based on the priority and the remaining power generation is allocated to the newly started hydrogen fuel cells. exist Less than or equal to and greater than In the case of prioritization and minimizing load fluctuations in the hydrogen fuel cell as the power allocation objective, a target power allocation strategy is determined to allocate power to the hydrogen fuel cell, including: exist Less than or equal to and greater than In the case of prioritization, the order is as follows: The hydrogen fuel cell is allocated power generation P2 until the [number]th [fuel cell]... Each hydrogen fuel cell distributes the remaining power generation. exist Less than or equal to In the case of prioritization and minimizing load fluctuations in the hydrogen fuel cell as the power allocation objective, a target power allocation strategy is determined to allocate power to the hydrogen fuel cell, including: exist Less than or equal to In the case of prioritization, the order is as follows: The hydrogen fuel cell is allocated power generation P1 until the first hydrogen fuel cell... Each hydrogen fuel cell distributes the remaining power generation, of which, Less than or equal to .

[0008] According to the power allocation method for multi-hydrogen stack fuel cells provided in the embodiments of this application, starting a new hydrogen fuel cell based on the priority and allocating the remaining power generation capacity to the newly started hydrogen fuel cell includes: Based on the preset first power calculation formula, the first power to be processed is obtained; The first power calculation formula includes: ; in, express and The integer obtained by division express and The remainder obtained by division is used to characterize the first power to be processed; exist If P1 is greater than or equal to P1, start based on the priority. +1 new hydrogen fuel cell, in which +1 new hydrogen fuel cell with the shortest cumulative operating time allocated power generation capacity. The remaining Each hydrogen fuel cell is allocated power generation P2; exist If the priority is less than P1, start based on the aforementioned priority. +1 new hydrogen fuel cell, in which +1 new hydrogen fuel cell One hydrogen fuel cell is allocated power generation P1, and the remaining hydrogen fuel cell is allocated power generation Pm, where Pm is based on... , And P1.

[0009] According to the power allocation method for multi-hydrogen stack fuel cells provided in the embodiments of this application, after allocating the power generation Pm to the remaining hydrogen fuel cell, the method further includes: In determining Pm In the case of P2, the number of hydrogen fuel cells with a power output of P1 is reduced, and the power output of the reduced hydrogen fuel cells is allocated to P2 until Pm falls within the starting power range.

[0010] According to the power allocation method for multi-hydrogen stack fuel cells provided in the embodiments of this application, the change in the first total demand power compared to the second total demand power includes: the first total demand power being less than the second total demand power; Based on the first total power demand, the number of hydrogen fuel cells operating at time i, the priority, the power generation range, and minimizing the load fluctuation of the hydrogen fuel cells as the power allocation target, a target power allocation strategy is determined, including: exist In this case, based on the priority of the currently running Each hydrogen fuel cell sequentially distributes its power generation P2 until it reaches P3. Each hydrogen fuel cell distributes the remaining power generation, of which, Less than or equal to ; exist Less than or equal to and greater than In this case, based on the priority of the currently running Each hydrogen fuel cell sequentially distributes its power generation P1 until it reaches P2. Each hydrogen fuel cell distributes the remaining power generation, of which, Less than or equal to ; exist Less than or equal to In this case, the second power to be processed is obtained based on the second power calculation formula, and the priority is based on the currently running... One hydrogen fuel cell is allocated power generation P1, and the remaining hydrogen fuel cell is allocated power generation Pn, where Pn is based on P1 and... get; The second power calculation formula includes: ; in, express and The integer obtained by division express and The remainder obtained by division is used to characterize the second power to be processed.

[0011] According to the power allocation method for multi-hydrogen stack fuel cells provided in the embodiments of this application, a deviation coefficient is calculated based on the power generation and the power generation range, including: When the power generation is less than P1, the power generation is input into the first deviation coefficient calculation formula to obtain the deviation coefficient output by the first deviation coefficient calculation formula; The formula for calculating the first deviation coefficient includes: ; in, Indicates the deviation coefficient. This represents the preset first deviation coefficient weighting value. Indicates power generation capacity. This indicates the rated power of the hydrogen fuel cell; When the power generation is greater than P2, the power generation is input into the second deviation coefficient calculation formula to obtain the deviation coefficient output by the second deviation coefficient calculation formula; The formula for calculating the second deviation coefficient includes: ; in, This represents the preset weighted value of the second deviation coefficient; When the power generation is within the power generation range, the preset deviation coefficient is determined as the final deviation coefficient.

[0012] According to the power distribution method for multi-hydrogen stack fuel cells provided in the embodiments of this application, after obtaining the cumulative operating time, the method further includes: Calculate the cumulative time difference based on the cumulative operating time of each hydrogen fuel cell; If the cumulative time difference is greater than or equal to a preset time threshold, the priority of the hydrogen fuel cell is determined based on the cumulative operating time. If the cumulative time difference is less than the preset time threshold, the priority of the hydrogen fuel cell is determined based on minimizing the power fluctuation of the hydrogen fuel cell.

[0013] This application also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the steps of the power distribution method for a multi-hydrogen stack fuel cell as described above.

[0014] This application also provides a non-transitory computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the steps of the power distribution method for a multi-hydrogen stack fuel cell as described above.

[0015] The power allocation method, device, and medium for multi-hydrogen fuel cells provided in this application, by obtaining the power generation range [P1, P2] corresponding to the optimal efficiency range of each hydrogen fuel cell, establishes a foundation for improving the lifespan of hydrogen fuel cells by maximizing the operation of each hydrogen fuel cell within its optimal efficiency range. Furthermore, the unit operating time is corrected based on the actual power generation of the hydrogen fuel cells, and the cumulative operating time of each hydrogen fuel cell is obtained. Priority is determined based on this, ensuring the relative consistency of the operation of each hydrogen fuel cell. The first total power demand corresponding to the hydrogen fuel cell at time i+1 is obtained. And the second total power demand of the hydrogen fuel cell at time i. Given that the first total power demand changes compared to the second total power demand, the number of hydrogen fuel cells operating at time i is determined based on the first total power demand. The power allocation targets are priority, power generation range, and minimizing load fluctuations of the hydrogen fuel cell. A target power allocation strategy is determined to allocate power to the hydrogen fuel cell. Finally, the target power allocation strategy is determined based on the changes in total power demand, thereby improving the service life of the hydrogen fuel cell while meeting the total power demand of the system. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic flowchart of the power distribution method for a multi-hydrogen stack fuel cell provided in the embodiments of this application; Figure 2 This is a schematic diagram of the structure of the electronic device provided in the embodiments of this application. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0019] This application provides a power distribution method for a multi-hydrogen stack fuel cell. This method can be applied to smart terminals, servers, and vehicle controllers. This application uses the application of this method in a server as an example for illustration, and some other descriptions in the embodiments are illustrative and not intended to limit the scope of protection of this application, and will not be described in detail thereafter. The specific implementation of the method is as follows... Figure 1 As shown: Step 101: Obtain the power generation range [P1, P2] corresponding to the optimal efficiency range of each hydrogen fuel cell.

[0020] Step 102: For each hydrogen fuel cell, perform the following cumulative running time calculation process: obtain the power generation of the hydrogen fuel cell at time i+1; calculate the deviation coefficient based on the power generation and the power generation range; correct the unit running time based on the deviation coefficient and sum the corrected unit running time to obtain the cumulative running time.

[0021] The cumulative operating time is used to determine the priority of hydrogen fuel cells.

[0022] Step 103: Obtain the first total power demand of the hydrogen fuel cell at time i+1. And the second total power demand of the hydrogen fuel cell at time i. .

[0023] Step 104: Given that the first total power demand has changed compared to the second total power demand, determine the number of hydrogen fuel cells operating at time i based on the first total power demand. The power allocation targets are determined by prioritizing factors such as power generation range, minimizing load fluctuations in hydrogen fuel cells, and establishing a target power allocation strategy for power allocation in hydrogen fuel cells.

[0024] The power allocation method, device, and medium for multi-hydrogen fuel cells provided in this application, by obtaining the power generation range [P1, P2] corresponding to the optimal efficiency range of each hydrogen fuel cell, establishes a foundation for improving the lifespan of hydrogen fuel cells by maximizing the operation of each hydrogen fuel cell within its optimal efficiency range. Furthermore, the unit operating time is corrected based on the actual power generation of the hydrogen fuel cells, and the cumulative operating time of each hydrogen fuel cell is obtained. Priority is determined based on this, ensuring the relative consistency of the operation of each hydrogen fuel cell. The first total power demand corresponding to the hydrogen fuel cell at time i+1 is obtained. And the second total power demand of the hydrogen fuel cell at time i. Given that the first total power demand changes compared to the second total power demand, the number of hydrogen fuel cells operating at time i is determined based on the first total power demand. The power allocation targets are priority, power generation range, and minimizing load fluctuations of the hydrogen fuel cell. A target power allocation strategy is determined to allocate power to the hydrogen fuel cell. Finally, the target power allocation strategy is determined based on the changes in total power demand, thereby improving the service life of the hydrogen fuel cell while meeting the total power demand of the system.

[0025] In one specific embodiment, each hydrogen fuel cell is tested in advance to determine the power generation efficiency of each hydrogen fuel cell at different power outputs, and the corresponding power output range is determined based on the optimal efficiency range.

[0026] The optimal efficiency range is determined based on the user's needs.

[0027] Specifically, the power generation efficiency is obtained based on the power generation efficiency calculation formula, as shown in formula (1): ..................(1) in, Indicates power generation efficiency. Indicates power generation capacity. This represents the sum of energy consumption of the vehicle's auxiliary systems, which include air compressors, hydrogen pumps, cooling pumps, and controllers, etc. This represents the theoretical power generation capacity, which is a constant.

[0028] In one specific embodiment, if the hydrogen fuel cell deviates from its power generation range during operation, it will accelerate the aging of the hydrogen fuel cell. To address this issue, a deviation coefficient is calculated based on the power generation capacity and the power generation range. The specific implementation includes: When the power generation is less than P1, the power generation is input into the first deviation coefficient calculation formula to obtain the deviation coefficient output by the first deviation coefficient calculation formula. When the power generation is greater than P2, the power generation is input into the second deviation coefficient calculation formula to obtain the deviation coefficient output by the second deviation coefficient calculation formula. When the power generation is within the power generation range, the preset deviation coefficient is determined as the final deviation coefficient.

[0029] The formula for calculating the first deviation coefficient is shown in formula (2): ………………………(2) in, Indicates the deviation coefficient. This represents the preset first deviation coefficient weighting value. Indicates power generation capacity. This indicates the rated power of the hydrogen fuel cell.

[0030] The first deviation coefficient weighted value is obtained when the power generation is less than P1, and is used to characterize the degree of damage to the battery when deviating from the same power.

[0031] The formula for calculating the second deviation coefficient is shown in formula (3): ………………………(3) in, This indicates the preset second deviation coefficient plus weight.

[0032] The second deviation coefficient weighted value is obtained when the power generation is greater than P2, and is used to characterize the degree of damage to the battery when deviating from the same power.

[0033] Specifically, and Obtained through pre-calibration.

[0034] Specifically, during the operation of the hydrogen fuel cell, the cumulative operating time is calculated and calibrated using a deviation coefficient. The cumulative operating time is... .in, This represents the cumulative operating time of the nth hydrogen fuel cell. This represents the unit operating time of the nth hydrogen fuel cell. This represents the deviation coefficient of the nth hydrogen fuel cell at time i.

[0035] Among them, the further the deviation is from the power generation range, the larger the deviation coefficient is, and the longer the corrected cumulative operating time is, which can better characterize the actual operating degradation of hydrogen fuel cells.

[0036] This application uses different deviation coefficient calculation formulas for different power generation capacities, which ensures the accuracy of deviation coefficient calculation and thus ensures the accuracy of priority.

[0037] In one specific embodiment, the start-up priority of each hydrogen fuel cell is determined based on the magnitude of the cumulative operating time.

[0038] The longer the cumulative running time, the lower the startup priority.

[0039] In one specific embodiment, at the moment of vehicle startup, the power generation of the hydrogen fuel cell is evenly allocated based on the total power demand for startup (equivalent to the initialization process), and then the legal power is iteratively allocated based on this.

[0040] In one specific embodiment, a change in the first total demand power relative to the second total demand power includes: the first total demand power being greater than the second total demand power.

[0041] Based on the initial total power demand, the number of hydrogen fuel cells operating at time i, their priority, power generation range, and minimizing load fluctuations of the hydrogen fuel cells as the power allocation objective, the specific implementation of the target power allocation strategy for hydrogen fuel cell power allocation includes: based on P1 and P2 are used to determine the decision threshold, which includes: and .

[0042] exist Greater than In the case of, based on The total number of hydrogen fuel cells N in the vehicle, their priority, and minimizing the load fluctuation of the hydrogen fuel cells are used as the power allocation targets. A target power allocation strategy is then determined to allocate power to the hydrogen fuel cells.

[0043] exist Less than or equal to and greater than In this case, based on priority and minimizing the load fluctuation of the hydrogen fuel cell as the power allocation objective, a target power allocation strategy is determined to allocate power to the hydrogen fuel cell.

[0044] exist Less than or equal to In this case, based on priority and minimizing the load fluctuation of the hydrogen fuel cell as the power allocation objective, a target power allocation strategy is determined to allocate power to the hydrogen fuel cell.

[0045] In one specific embodiment, in Greater than In the case of, based on The total number N of hydrogen fuel cells in the vehicle, their priority, and minimizing the load fluctuation of the hydrogen fuel cells are the power allocation targets. The specific implementation of the target power allocation strategy for hydrogen fuel cell power allocation includes: exist Greater than In the case of, judge Is it equal to N? If Given N, sort the power generation capacity from smallest to largest, and based on the sorting result... Each hydrogen fuel cell distributes its power generation P2, which is... Each hydrogen fuel cell distributes power generation. ;like Less than N, and Less than In order to reduce the number of fluctuating hydrogen fuel cells, Each hydrogen fuel cell is allocated power generation P2, and new hydrogen fuel cells are started based on priority, with the remaining power generation allocated to the newly started hydrogen fuel cells.

[0046] in, , Based on this condition The goal is to determine the maximum integer value. The quantity.

[0047] in, based on and get.

[0048] Specifically, based on and get The specific implementation includes: Will and Input the preset third power calculation formula, and obtain the output of the third power calculation formula. ; The formula for calculating the third power is shown in formula (4): …………(4) In one specific embodiment, the specific implementation of starting a new hydrogen fuel cell based on priority and allocating the remaining power generation capacity to the newly started hydrogen fuel cell includes: Based on the preset first power calculation formula, the first power to be processed is obtained.

[0049] The formula for calculating the first power is shown in formula (5): ……………………(5) in, express and The integer obtained by division express and The remainder obtained by division is used to characterize the first power to be processed.

[0050] exist If P1 is greater than or equal to P1, start based on priority. +1 new hydrogen fuel cell. Among them, in +1 new hydrogen fuel cell with the shortest cumulative operating time allocated power generation capacity. The remaining Each hydrogen fuel cell is allocated power generation P2.

[0051] exist If the value is less than P1, start based on priority. +1 new hydrogen fuel cell. Among them, in +1 new hydrogen fuel cell One hydrogen fuel cell is allocated power generation P1, and the remaining hydrogen fuel cell is allocated power generation Pm.

[0052] Among them, Pm is based on , The result is obtained from P1, see formula (6) for details: ………………(6) in, This indicates the change in primary aggregate demand and secondary aggregate demand.

[0053] In one specific embodiment, after the remaining hydrogen fuel cell is allocated power generation Pm, the determination of Pm is performed. In the case of P2, the number of hydrogen fuel cells with a power output of P1 is reduced, and the power output of the reduced hydrogen fuel cells is allocated to P2 until Pm falls within the starting power range.

[0054] In one specific embodiment, in Less than or equal to and greater than In this case, based on priority and minimizing the load fluctuation of the hydrogen fuel cell as the power allocation objective, the specific implementation of the target power allocation strategy for power allocation of the hydrogen fuel cell includes: exist Less than or equal to and greater than In certain circumstances, it is not necessary to restart or shut down the hydrogen fuel cell, based on the following priorities: The hydrogen fuel cell is allocated power generation P2 until the [number]th [fuel cell]... Each hydrogen fuel cell distributes the remaining power generation.

[0055] If the required power is exceeded, the last hydrogen fuel cell only needs to meet the remaining power demand.

[0056] In one specific embodiment, in Less than or equal to In this case, based on priority and minimizing the load fluctuation of the hydrogen fuel cell as the power allocation objective, the specific implementation of the target power allocation strategy for power allocation of the hydrogen fuel cell includes: exist Less than or equal to In the case of prioritization, the order is as follows: The hydrogen fuel cell is allocated power generation P1 until the first hydrogen fuel cell... Each hydrogen fuel cell distributes the remaining power generation.

[0057] in, Less than or equal to .

[0058] For example, It is 10. If the power output is 3, then the power generation P1 needs to be allocated to 3 hydrogen fuel cells, the remaining power generation power is allocated to the 4th hydrogen fuel cell, and the remaining 6 hydrogen fuel cells continue to operate according to the power generation power of the previous moment.

[0059] Among them, hydrogen fuel cells that are not newly started are those that are already in operation.

[0060] In one specific embodiment, a change in the first total demand power compared to the second total demand power includes: the first total demand power being less than the second total demand power.

[0061] Based on the first total power demand, the number of hydrogen fuel cells operating at time i, their priority, power generation range, and minimizing the load fluctuation of the hydrogen fuel cells as the power allocation objective, the specific implementation of the target power allocation strategy includes: exist In order to reduce the number of fluctuating hydrogen fuel cells, priority is given to those that are currently in operation. Each hydrogen fuel cell sequentially distributes its power generation P2 until it reaches P3. Each hydrogen fuel cell distributes the remaining power generation.

[0062] in, Less than or equal to .

[0063] For example, It is 10. If the power output is 3, then the power generation P2 needs to be allocated to 3 hydrogen fuel cells, the remaining power generation power is allocated to the 4th hydrogen fuel cell, and the remaining 6 hydrogen fuel cells continue to operate according to the power generation power of the previous moment.

[0064] exist Less than or equal to and greater than In this case, based on the priority of the currently running Each hydrogen fuel cell sequentially distributes its power generation P1 until it reaches P2. Each hydrogen fuel cell distributes the remaining power generation.

[0065] in, Less than or equal to .

[0066] For example, It is 10. If the power output is 3, then the power generation P1 needs to be allocated to 3 hydrogen fuel cells, the remaining power generation power is allocated to the 4th hydrogen fuel cell, and the remaining 6 hydrogen fuel cells continue to operate according to the power generation power of the previous moment.

[0067] exist Less than or equal to In this case, the second power to be processed is obtained based on the second power calculation formula, and the priority is based on the currently running... One hydrogen fuel cell is allocated power generation P1, and the remaining hydrogen fuel cell is allocated power generation Pn.

[0068] Wherein, Pn is based on P1 and We obtain Pn = P1 + .

[0069] The formula for calculating the second power is shown in formula (7): ………………(7) in, express and The integer obtained by division express and The remainder obtained by division is used to characterize the second power to be processed.

[0070] Specifically, after the remaining hydrogen fuel cell is allocated its power generation capacity Pn, the determination of Pn is made. In the case of P2, the number of hydrogen fuel cells with a power output of P1 is reduced, and the power output of the reduced hydrogen fuel cells is allocated to P2 until Pn falls within the starting power range.

[0071] In one specific embodiment, for the remaining N- A hydrogen fuel cell has a power requirement of Pmin, which is the power generated by the hydrogen fuel cell and equal to the power consumed by the auxiliary components of the hydrogen fuel cell. If the power requirement does not change after a preset time t, the hydrogen fuel cell will shut down.

[0072] The preset duration t is a variable determined based on road conditions. If the road conditions are urban, demand fluctuates frequently, so the preset duration is longer; if the road conditions are non-urban, demand fluctuates more steadily, so the preset duration is shorter. Users can set the specific value according to their actual needs.

[0073] In one specific embodiment, after obtaining the cumulative operating time of each hydrogen fuel cell, the cumulative time difference is calculated based on the cumulative operating time of each hydrogen fuel cell, as detailed in formula (8): ……………………(8) in, Indicates the cumulative time difference. This indicates the maximum cumulative operating time among multiple hydrogen fuel cells. This represents the minimum cumulative operating time among multiple hydrogen fuel cells.

[0074] When the cumulative time difference is greater than or equal to the preset time threshold, the degradation of all hydrogen fuel cells varies greatly. When allocating and adjusting power, the cumulative operating time is the main consideration. Therefore, hydrogen fuel cells with shorter cumulative operating times have higher priority.

[0075] When the cumulative time difference is less than the preset time threshold, the degradation of all hydrogen fuel cells is basically the same. At this time, the minimum power fluctuation is the main consideration, and the smaller the power fluctuation, the higher the priority.

[0076] Figure 2 An example is a schematic diagram of the physical structure of an electronic device, such as... Figure 2 As shown, the electronic device may include a processor 201, a communications interface 202, a memory 203, and a communication bus 204. The processor 201, communications interface 202, and memory 203 communicate with each other via the communication bus 204. The processor 201 can call logical instructions from the memory 203 to execute a power distribution method for a multi-hydrogen stack fuel cell.

[0077] Furthermore, the logical instructions in the aforementioned memory 203 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable 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 a 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 of the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0078] On the other hand, the present invention also provides a computer program product, which includes a computer program stored on a non-transitory computer-readable storage medium. The computer program includes program instructions, and when the program instructions are executed by a computer, the computer is able to execute the power distribution method for the multi-hydrogen stack fuel cell provided by the above methods.

[0079] In another aspect, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is implemented to perform the power distribution method for the multi-hydrogen stack fuel cell provided in the above embodiments.

[0080] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and 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 network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0081] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, 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 can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., including several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods of various embodiments or some parts of embodiments.

[0082] Finally, it should be noted that the above are merely preferred embodiments of this application, and this application is not limited to the above embodiments. It is understood that other improvements and variations that can be directly derived or conceived by those skilled in the art without departing from the spirit and concept of this application should be considered to be included within the protection scope of this application.

Claims

1. A power distribution method for a multi-hydrogen stack fuel cell, characterized in that, The method includes: Obtain the power generation range [P1, P2] corresponding to the optimal efficiency range of each hydrogen fuel cell; For each hydrogen fuel cell, the following cumulative operating time calculation process is performed: obtain the power generation of the hydrogen fuel cell at time i+1; calculate the deviation coefficient based on the power generation and the power generation range; correct the unit operating time based on the deviation coefficient and sum the corrected unit operating times to obtain the cumulative operating time, wherein the cumulative operating time is used to determine the priority of the hydrogen fuel cell; Obtain the first total power demand of the hydrogen fuel cell at time i+1. And the second total power demand of the hydrogen fuel cell at time i. ; Given that the first total power demand changes compared to the second total power demand, the number of hydrogen fuel cells operating at time i is determined based on the first total power demand. The priority, the power generation range, and the minimum load fluctuation of the hydrogen fuel cell are used as the power allocation targets to determine the target power allocation strategy for the hydrogen fuel cell.

2. The power distribution method for multi-hydrogen stack fuel cells according to claim 1, characterized in that, The change in the first total demand power compared to the second total demand power includes: the first total demand power being greater than the second total demand power; Based on the first total power demand, the number of hydrogen fuel cells operating at time i, the priority, the power generation range, and minimizing the load fluctuation of the hydrogen fuel cells as the power allocation target, a target power allocation strategy is determined to allocate power to the hydrogen fuel cells, including: based on P1 and P2 are used to determine the judgment threshold, wherein the judgment threshold includes: and ; exist Greater than In the case of, based on The total number of hydrogen fuel cells N in the vehicle, the priority, and the minimum load fluctuation of the hydrogen fuel cells are used as the power allocation targets to determine the target power allocation strategy for the hydrogen fuel cells. exist Less than or equal to and greater than In the case of prioritization and minimizing the load fluctuation of the hydrogen fuel cell as the power allocation target, a target power allocation strategy is determined to allocate power to the hydrogen fuel cell. exist Less than or equal to In this case, based on the priority and minimizing the load fluctuation of the hydrogen fuel cell as the power allocation target, a target power allocation strategy is determined to allocate power to the hydrogen fuel cell.

3. The power distribution method for a multi-hydrogen stack fuel cell according to claim 2, characterized in that, exist Greater than In the case of, based on The total number of hydrogen fuel cells N in the vehicle, the priority, and minimizing the load fluctuation of the hydrogen fuel cells are used as the power allocation targets. A target power allocation strategy is determined to allocate power to the hydrogen fuel cells, including: exist Greater than In the case of, judge Is it equal to N? like Given N, sort the power generation capacity from smallest to largest, and based on the sorting result... Each hydrogen fuel cell distributes its power generation P2, which is... Each hydrogen fuel cell distributes power generation. ,in, based on and get; like Less than N, and Less than ,for Each hydrogen fuel cell is allocated power generation P2, and new hydrogen fuel cells are started based on the priority and the remaining power generation is allocated to the newly started hydrogen fuel cells. exist Less than or equal to and greater than In the case of prioritization and minimizing load fluctuations in the hydrogen fuel cell as the power allocation objective, a target power allocation strategy is determined to allocate power to the hydrogen fuel cell, including: exist Less than or equal to and greater than In the case of prioritization, the order is as follows: The hydrogen fuel cell is allocated power generation P2 until the [number]th [fuel cell]... Each hydrogen fuel cell distributes the remaining power generation. exist Less than or equal to In the case of prioritization and minimizing load fluctuations in the hydrogen fuel cell as the power allocation objective, a target power allocation strategy is determined to allocate power to the hydrogen fuel cell, including: exist Less than or equal to In the case of prioritization, the order is as follows: The hydrogen fuel cell is allocated power generation P1 until the first hydrogen fuel cell... Each hydrogen fuel cell distributes the remaining power generation, of which, Less than or equal to .

4. The power distribution method for multi-hydrogen stack fuel cells according to claim 3, characterized in that, Starting new hydrogen fuel cells based on the aforementioned priority and allocating remaining power generation capacity to the newly started hydrogen fuel cells includes: Based on the preset first power calculation formula, the first power to be processed is obtained; The first power calculation formula includes: ； in, express and The integer obtained by division express and The remainder obtained by division is used to characterize the first power to be processed; exist If P1 is greater than or equal to P1, start based on the priority. +1 new hydrogen fuel cell, in which +1 new hydrogen fuel cell with the shortest cumulative operating time allocated power generation capacity. The remaining Each hydrogen fuel cell is allocated power generation P2; exist If the priority is less than P1, start based on the aforementioned priority. +1 new hydrogen fuel cell, in which +1 new hydrogen fuel cell One hydrogen fuel cell is allocated power generation P1, and the remaining hydrogen fuel cell is allocated power generation Pm, where Pm is based on... , And P1.

5. The power distribution method for multi-hydrogen stack fuel cells according to claim 4, characterized in that, After allocating the remaining hydrogen fuel cell power generation capacity Pm, it also includes: In determining Pm In the case of P2, the number of hydrogen fuel cells with a power output of P1 is reduced, and the power output of the reduced hydrogen fuel cells is allocated to P2 until Pm falls within the starting power range.

6. The power distribution method for a multi-hydrogen stack fuel cell according to claim 1, characterized in that, The change in the first total demand power compared to the second total demand power includes: the first total demand power being less than the second total demand power; Based on the first total power demand, the number of hydrogen fuel cells operating at time i, the priority, the power generation range, and minimizing the load fluctuation of the hydrogen fuel cells as the power allocation target, a target power allocation strategy is determined, including: exist In this case, based on the priority of the currently running Each hydrogen fuel cell sequentially distributes its power generation P2 until it reaches P3. Each hydrogen fuel cell distributes the remaining power generation, of which, Less than or equal to ; exist Less than or equal to and greater than In this case, based on the priority of the currently running Each hydrogen fuel cell sequentially distributes its power generation P1 until it reaches P2. Each hydrogen fuel cell distributes the remaining power generation, of which, Less than or equal to ; exist Less than or equal to In this case, the second power to be processed is obtained based on the second power calculation formula, and the priority is based on the currently running... One hydrogen fuel cell is allocated power generation P1, and the remaining hydrogen fuel cell is allocated power generation Pn, where Pn is based on P1 and... get; The second power calculation formula includes: ； in, express and The integer obtained by division express and The remainder obtained by division is used to characterize the second power to be processed.

7. The power distribution method for a multi-hydrogen stack fuel cell according to any one of claims 1-6, characterized in that, Based on the power generation capacity and the power generation capacity range, a deviation coefficient is calculated, including: When the power generation is less than P1, the power generation is input into the first deviation coefficient calculation formula to obtain the deviation coefficient output by the first deviation coefficient calculation formula; The formula for calculating the first deviation coefficient includes: ； in, Indicates the deviation coefficient. This represents the preset first deviation coefficient weighting value. Indicates power generation capacity. This indicates the rated power of the hydrogen fuel cell; When the power generation is greater than P2, the power generation is input into the second deviation coefficient calculation formula to obtain the deviation coefficient output by the second deviation coefficient calculation formula; The formula for calculating the second deviation coefficient includes: ； in, This represents the preset weighted value of the second deviation coefficient; When the power generation is within the power generation range, the preset deviation coefficient is determined as the final deviation coefficient.

8. The power distribution method for a multi-hydrogen stack fuel cell according to any one of claims 1-6, characterized in that, After obtaining the cumulative running time, it also includes: Calculate the cumulative time difference based on the cumulative operating time of each hydrogen fuel cell; If the cumulative time difference is greater than or equal to a preset time threshold, the priority of the hydrogen fuel cell is determined based on the cumulative operating time. If the cumulative time difference is less than the preset time threshold, the priority of the hydrogen fuel cell is determined based on minimizing the power fluctuation of the hydrogen fuel cell.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the steps of the power distribution method for a multi-hydrogen stack fuel cell as described in any one of claims 1 to 8.

10. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When executed by a processor, the computer program implements the steps of the power distribution method for a multi-hydrogen stack fuel cell as described in any one of claims 1 to 8.

Images