Double-stack power distribution method, fuel cell system, electronic equipment and medium

Abstract

The invention provides a double-stack power distribution method, a fuel cell system, electronic equipment and a medium, and belongs to the technical field of fuel cells. The method is applied to a started electric pile controller, and comprises the following steps: acquiring required power at the current moment so as to carry out power regulation on two electric piles; acquiring the required power at the current moment and the required power at the previous moment, and when the two required power are the same, performing current rising and falling adjustment on the two electric piles and then determining the power derivatives of the two electric piles; when the deviation between the power derivatives of the two electric piles is greater than or equal to a preset deviation threshold value, determining a target current of the first electric pile according to the power derivatives of the two electric piles; and acquiring the required power at the current moment and the required power at the previous moment, performing current regulation on the first electric pile according to the target current of the first electric pile when the required power at the current moment and the required power at the previous moment are the same, performing power regulation on the second electric pile according to the required power at the current moment, and returning to re-determine the power derivatives of the two electric piles. According to the invention, the total hydrogen consumption of the double galvanic piles during steady-state work can be minimized.

Description

Technical Field

[0001] The present application relates to the field of fuel cell technology, and in particular to a dual-stack power distribution method, a fuel cell system, an electronic device and a medium. Background Art

[0002] For reasons of high power or safety redundancy, a fuel cell system is equipped with at least two stacks for joint power generation. Due to the differences between the fuel cell itself and the environment in which it is located, different stacks have inconsistent attenuation rates, which is specifically manifested in inconsistent power-current curves for different stacks, and the output power of the stack is not proportional to its fuel consumption rate. When the conventional power average distribution strategy is used to control the stack, it is difficult to reduce the total hydrogen consumption of the fuel cell system, so it is necessary to optimize the existing power distribution strategy. Summary of the invention

[0003] The main purpose of this application is to propose a dual-stack power distribution method, a fuel cell system, an electronic device and a medium, which can minimize the total hydrogen consumption of the dual-stack during steady-state operation, thereby increasing the endurance of the fuel cell system.

[0004] To achieve the above-mentioned purpose, one aspect of the present application provides a dual-stack power distribution method, which is applied to a stack controller in a power-on state, and includes: Obtaining the required power at the current moment and recording it as the first required power, and adjusting the power of the first battery stack and the second battery stack according to the first required power; Obtaining the power demand at the current moment and the power demand at the previous moment, and when the power demand at the current moment is the same as the power demand at the previous moment, determining the power derivative of the first battery stack after adjusting the current up and down of the first battery stack, and determining the power derivative of the second battery stack after adjusting the current up and down of the second battery stack; Determine a deviation between a power derivative of the first battery stack and a power derivative of the second battery stack, and when the deviation is greater than or equal to a preset deviation threshold, determine a target current of the first battery stack according to the power derivative of the first battery stack and the power derivative of the second battery stack; Obtaining the required power at the current moment and the required power at the previous moment, recording the required power at the current moment as the second required power, and when the second required power is the same as the required power at the previous moment, regulating the current of the first fuel cell stack according to the target current of the first fuel cell stack; The second battery stack is power-regulated according to the second required power, and then the power derivative of the first battery stack is determined after the current is increased or decreased by the first battery stack, and the power derivative of the second battery stack is determined after the current is increased or decreased by the second battery stack.

[0005] Further, the power regulation of the first fuel cell stack and the second fuel cell stack according to the first required power includes: Obtaining a rated power of the first fuel cell stack and a rated power of the second fuel cell stack; Determining a target power of the first fuel cell stack according to the first required power, the rated power of the first fuel cell stack, and the rated power of the second fuel cell stack; According to the target power of the first fuel cell stack, power regulation is performed on the first fuel cell stack; Determining a first target power of the second fuel cell stack according to the first required power and the target power of the first fuel cell stack; The second fuel cell stack is power regulated according to the first target power of the second fuel cell stack.

[0006] Further, determining the power derivative of the first battery stack after adjusting the current up and down of the first battery stack includes: Acquiring an initial current of the first battery stack, and determining a current adjustment amount of the first battery stack according to the initial current of the first battery stack and a preset ratio; Adding an initial current of the first battery stack and a current adjustment amount of the first battery stack to obtain a first target current of the first battery stack; According to a first target current of the first battery stack, current regulation is performed on the first battery stack, and then a current power of the first battery stack is obtained and recorded as a first power; Subtracting an initial current of the first battery stack from a current adjustment amount of the first battery stack to obtain a second target current of the first battery stack; According to the second target current of the first battery stack, current regulation is performed on the first battery stack, and then a current power of the first battery stack is obtained and recorded as a second power; A first-order power derivative and a second-order power derivative of the first fuel cell stack are determined according to a target power of the first fuel cell stack, a current adjustment amount of the first fuel cell stack, the first power, and the second power.

[0007] Further, determining the power derivative of the second battery stack after adjusting the current up and down of the second battery stack includes: Acquiring an initial current of the second battery stack, and determining a current adjustment amount of the second battery stack according to the initial current of the second battery stack and the preset ratio; Adding an initial current of the second battery stack and a current adjustment amount of the second battery stack to obtain a first target current of the second battery stack; According to the first target current of the second battery stack, current regulation is performed on the second battery stack, and then a current power of the second battery stack is obtained and recorded as a third power; Subtracting an initial current of the second battery stack from a current adjustment amount of the second battery stack to obtain a second target current of the second battery stack; According to the second target current of the second battery stack, current regulation is performed on the second battery stack, and then a current power of the second battery stack is obtained and recorded as a fourth power; The first-order derivative of the power of the second fuel cell stack is determined according to the current adjustment amount of the second fuel cell stack, the third power and the fourth power.

[0008] Further, determining the deviation between the power derivative of the first fuel cell stack and the power derivative of the second fuel cell stack includes: determining an absolute value of a difference between a first-order power derivative of the first fuel cell stack and a first-order power derivative of the second fuel cell stack.

[0009] Further, determining the target current of the first battery stack according to the power derivative of the first battery stack and the power derivative of the second battery stack includes: Averaging the first-order derivative of power of the first fuel cell stack and the first-order derivative of power of the second fuel cell stack, and then subtracting the first-order derivative of power of the first fuel cell stack from the average result to obtain a first deviation; The first deviation and the second-order derivative of the power of the first battery stack are divided, and the division result and the initial current of the first battery stack are added to obtain the target current of the first battery stack.

[0010] Further, the power regulation of the second fuel cell stack according to the second required power includes: acquiring the power of the first fuel cell stack after current regulation and recording it as a fifth power, and determining a second target power of the second fuel cell stack according to the second required power and the fifth power; The power of the second fuel cell stack is regulated according to the second target power of the second fuel cell stack.

[0011] To achieve the above-mentioned purpose, another aspect of the present application proposes a fuel cell system, which includes a first fuel cell stack, a second fuel cell stack and a fuel cell stack controller, wherein the first fuel cell stack and the second fuel cell stack are controlled by the fuel cell stack controller, and the fuel cell stack controller is used to implement the above-mentioned method when it is turned on.

[0012] To achieve the above objective, another aspect of the present application provides an electronic device, the electronic device comprising a memory and a processor, the memory storing a computer program, and the processor implementing the above method when executing the computer program.

[0013] To achieve the above objective, another aspect of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and the computer program implements the above method when executed by a processor.

[0014] The present application includes at least the following beneficial effects: determining and comparing the power derivatives of the dual stacks after adjusting the current up and down, and adjusting the current of the first stack and the power of the second stack when it is determined that the deviation between the power derivatives of the dual stacks is greater than or equal to a preset deviation threshold, and then re-determining and comparing the power derivatives of the dual stacks until it is determined that the deviation between the power derivatives of the dual stacks is less than the preset deviation threshold, the total hydrogen consumption of the dual stacks can be minimized, thereby increasing the endurance of the fuel cell system; by repeatedly obtaining the required power at the current moment and the required power at the previous moment and comparing them, it can be ensured that the dual stack is output adjusted under steady-state operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic flow chart of a dual-stack power distribution method provided in an embodiment of the present application; Figure 2 is a schematic diagram of the composition of a fuel cell system provided in an embodiment of the present application; Figure 3 It is a schematic diagram of the hardware structure of the electronic device provided in the embodiment of the present application. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is further described in detail below in conjunction with the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the embodiments of the present application. They are only examples of systems and methods consistent with some aspects of the embodiments of the present application as detailed in the attached claims.

[0017] It is understood that the terms "first", "second", etc. used in this application can be used to describe various concepts in this article, but unless otherwise specified, these concepts are not limited by these terms. These terms are only used to distinguish one concept from another concept. For example, without departing from the scope of the embodiment of the present application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the words "if" and "if" as used herein can be interpreted as "at the time of" or "when" or "in response to determination".

[0018] The terms "at least one", "multiple", "each", "any", etc. used in this application, at least one includes one, two or more, multiple includes two or more, each refers to each of the corresponding multiple, and any refers to any one of the multiple.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein are only for the purpose of describing the embodiments of this application and are not intended to limit this application.

[0020] For the sake of high power or safety redundancy, a fuel cell system is equipped with at least two stacks for joint power generation. Due to the differences between the fuel cell itself and the environment in which it is located, different stacks have inconsistent attenuation rates, which is specifically manifested in that different stacks have inconsistent power-current curves, and the output power of the stack is not proportional to its fuel consumption rate. When a conventional power averaging strategy is used to control the stack, it can be understood that according to the number of stacks in the fuel cell system, the total required power of the stack is evenly divided to obtain the average required power, and the average required power is then used to adjust the power of each stack set in the fuel cell system. However, this implementation method is difficult to effectively reduce the total hydrogen consumption of the fuel cell system, so it is necessary to optimize the existing power allocation strategy.

[0021] In view of this, an embodiment of the present application provides a dual-stack power distribution method, a fuel cell system, an electronic device and a medium. The scheme determines and compares the power derivatives of the dual stacks after adjusting the current of the dual stacks. When it is determined that the deviation between the power derivatives of the dual stacks is greater than or equal to a preset deviation threshold, the current of the first stack is adjusted and the power of the second stack is adjusted. The power derivatives of the dual stacks are re-determined and compared until it is determined that the deviation between the power derivatives of the dual stacks is less than the preset deviation threshold. The total hydrogen consumption of the dual stacks can be minimized, thereby increasing the endurance of the fuel cell system. By repeatedly obtaining the required power at the current moment and the required power at the previous moment and comparing them, it can be ensured that the dual stack is output adjusted under steady-state operation.

[0022] Figure 1 is an optional flow chart of a dual-stack power distribution method provided in an embodiment of the present application, Figure 1 The method is mainly applied to a stack controller in a startup state, and the method may include but is not limited to steps S101 to S109.

[0023] Step S101, obtaining the required power at the current moment and recording it as the first required power, and adjusting the power of the first battery stack and the second battery stack according to the first required power; Step S102, obtaining the required power at the current moment and the required power at the previous moment, and determining whether the two are different; if so, returning to execute the above step S101; if not, executing step S103; Step S103, determining the power derivative of the first battery stack after adjusting the current up and down of the first battery stack, and determining the power derivative of the second battery stack after adjusting the current up and down of the second battery stack; Step S104, determining the deviation between the power derivative of the first stack and the power derivative of the second stack, and judging whether the deviation is less than a preset deviation threshold; if so, executing step S105; if not, executing step S106; Step S105, obtaining the power demand at the current moment and the power demand at the previous moment in real time and performing a judgment, until it is determined that the power demand at the current moment is different from the power demand at the previous moment, and then returning to execute the above step S101; Step S106, determining a target current of the first battery stack according to the power derivative of the first battery stack and the power derivative of the second battery stack; Step S107, obtaining the required power at the current moment and the required power at the previous moment, recording the required power at the current moment as the second required power, and determining whether the two are different; if so, returning to execute the above step S101; if not, executing step S108; Step S108, regulating the current of the first battery stack according to the target current of the first battery stack; Step S109: adjust the power of the second fuel cell stack according to the second required power, and then return to execute the above step S103.

[0024] It should be noted that when the stack controller switches from the startup state to the shutdown state, the above-mentioned dual-stack power allocation method will no longer be used to perform output regulation control on the first stack and the second stack, that is, no matter which of the above steps is executed, the entire output regulation control process will be directly terminated.

[0025] In steps S101 to S109 shown in the embodiment of the present application, while keeping the power demand at the current moment the same as the power demand at the previous moment, the deviation between the power derivatives of the two stacks is ensured to be less than a preset deviation threshold by current regulation of the first stack and power regulation of the second stack, so that the total hydrogen consumption of the dual stacks in steady-state operation is minimized, thereby increasing the endurance of the fuel cell system.

[0026] In step S101 of some embodiments, the power of the first battery stack and the second battery stack is adjusted according to the first required power. The corresponding implementation process may include but is not limited to steps S201 to S205: Step S201, obtaining the rated power of the first battery stack and the rated power of the second battery stack; Step S202: Determine the target power of the first battery stack according to the first required power, the rated power of the first battery stack, and the rated power of the second battery stack. The target power may be determined by using the following expression:

[0027] In the formula, is the target power of the first stack, is the power allocation ratio, is the first required power, is the rated power of the first battery stack, is the rated power of the second battery stack; Step S203: According to the target power of the first battery stack, the power of the first battery stack is adjusted, that is, the current power of the first battery stack is adjusted to the target power of the first battery stack; Step S204: Determine the first target power of the second fuel cell stack according to the first required power and the target power of the first fuel cell stack, which can be determined by using the following expression:

[0028] In the formula, is the first target power of the second fuel cell stack; Step S205: According to the first target power of the second fuel cell stack, the power of the second fuel cell stack is adjusted, that is, the current power of the second fuel cell stack is adjusted to the first target power of the second fuel cell stack.

[0029] It should be noted that after determining the target power of the first fuel cell stack and the first target power of the second fuel cell stack, you can choose to power adjust the first fuel cell stack and the second fuel cell stack at the same time, or you can choose to power adjust the first fuel cell stack and the second fuel cell stack one after another, that is, first adjust the power of the first fuel cell stack and then adjust the power of the second fuel cell stack, or first adjust the power of the second fuel cell stack and then adjust the power of the first fuel cell stack. This application does not make any limitation to this.

[0030] Steps S201 to S205 shown in the embodiment of the present application can ensure that both fuel cell stacks operate within their optimal operating range by utilizing the rated powers of the two fuel cell stacks to distribute the power demand at the current moment, thereby improving the reliability and stability of the fuel cell system.

[0031] In step S103 of some embodiments, the power derivative of the first battery stack includes the first-order derivative of power and the second-order derivative of power of the first battery stack. The power derivative of the first battery stack can be understood as the derivative of the power of the first battery stack with respect to current, so the first-order derivative of power of the first battery stack is the first-order derivative of the power of the first battery stack with respect to current, and the second-order derivative of power of the first battery stack is the second-order derivative of the power of the first battery stack with respect to current; similarly, the power derivative of the second battery stack includes the first-order derivative of power of the second battery stack, and the power derivative of the second battery stack can be understood as the derivative of the power of the second battery stack with respect to current, so the first-order derivative of power of the second battery stack is the first-order derivative of the power of the second battery stack with respect to current.

[0032] In step S103 of some embodiments, the power derivative of the first battery stack is determined after the current is adjusted up or down on the first battery stack. The corresponding implementation process may include but is not limited to steps S301 to S306: Step S301, obtaining the initial current of the first battery stack, and determining the current adjustment amount of the first battery stack according to the preset ratio and the initial current of the first battery stack, which can be determined by the following expression:

[0033] In the formula, is the current adjustment of the first battery stack, is the initial current of the first battery stack, is a preset ratio, and preferably set ; Step S302, adding the initial current of the first battery stack and the current adjustment amount of the first battery stack to obtain a first target current of the first battery stack; Step S303, according to the first target current of the first battery stack, current regulation is performed on the first battery stack, that is, the current current of the first battery stack is regulated to the first target current of the first battery stack, and then the current power of the first battery stack is obtained and recorded as the first power; Step S304, subtracting the initial current of the first battery stack from the current adjustment amount of the first battery stack to obtain a second target current of the first battery stack; Step S305, according to the second target current of the first battery stack, current regulation is performed on the first battery stack, that is, the current current of the first battery stack is regulated to the second target current of the first battery stack, and then the current power of the first battery stack is obtained and recorded as the second power; Step S306: Determine the first-order power derivative and the second-order power derivative of the first battery stack according to the first power, the second power, the current adjustment amount of the first battery stack, and the target power of the first battery stack. The first-order power derivative and the second-order power derivative of the first battery stack can be determined by using the following expression:

[0034] In the formula, is the first-order derivative of the power of the first stack, is the second-order derivative of the power of the first stack, is the first power, The second power.

[0035] It should be noted that, in the above step S301, if the above step S103 is executed sequentially after the above step S102 is executed, then the initial current of the first battery stack refers to the current of the first battery stack after power adjustment, that is, the initial current of the first battery stack is obtained at the same time as the above step S203 is executed; if the above step S103 is returned to execute after the above step S109 is executed, then the initial current of the first battery stack refers to the target current of the first battery stack determined by the above step S106.

[0036] In steps S301 to S306 shown in the embodiment of the present application, the first fuel cell stack is in the process of momentary attenuation, and its power-current curve after working for a period of time will gradually deviate from the initial power-current curve when leaving the factory. The working current of the first fuel cell stack is slightly offset and adjusted by adopting the disturbance observation method to calculate the latest power-current curve slope of the first fuel cell stack, thereby providing data support for the subsequent judgment of whether the current total hydrogen consumption of the dual fuel cell stack can reach the minimum.

[0037] In step S103 of some embodiments, the power derivative of the second battery stack is determined after the current of the second battery stack is adjusted up or down. The corresponding implementation process may include but is not limited to steps S401 to S406: Step S401, obtaining the initial current of the second battery stack, and determining the current adjustment amount of the second battery stack according to the preset ratio and the initial current of the second battery stack, which can be determined by the following expression:

[0038] In the formula, is the current adjustment of the second battery stack, is the initial current of the second battery stack; Step S402, adding the initial current of the second battery stack and the current adjustment amount of the second battery stack to obtain a first target current of the second battery stack; Step S403, according to the first target current of the second battery stack, current regulation is performed on the second battery stack, that is, the current current of the second battery stack is regulated to the first target current of the second battery stack, and then the current power of the second battery stack is obtained and recorded as the third power; Step S404, subtracting the initial current of the second battery stack from the current adjustment amount of the second battery stack to obtain a second target current of the second battery stack; Step S405, according to the second target current of the second battery stack, current regulation is performed on the second battery stack, that is, the current current of the second battery stack is regulated to the second target current of the second battery stack, and then the current power of the second battery stack is obtained and recorded as the fourth power; Step S406: Determine the first-order derivative of the power of the second battery stack according to the third power, the fourth power and the current adjustment amount of the second battery stack, which can be determined by using the following expression:

[0039] In the formula, is the first-order derivative of the power of the second stack, is the third power, The fourth power.

[0040] It should be noted that, in the above step S401, the initial current of the second battery stack refers to the current of the second battery stack after power adjustment. If the above step S103 is executed sequentially after the above step S102 is executed, the initial current of the second battery stack is obtained at the same time as the above step S205 is executed; if the above step S103 is returned to be executed after the above step S109 is executed, the initial current of the second battery stack is obtained at the same time as the above step S109 is executed.

[0041] In steps S401 to S406 shown in the embodiment of the present application, the second fuel cell stack is in the process of momentary attenuation, and its power-current curve after working for a period of time will gradually deviate from the initial power-current curve when leaving the factory. Similarly, the working current of the second fuel cell stack is slightly offset and adjusted by adopting the disturbance observation method to calculate the latest power-current curve slope of the second fuel cell stack, thereby providing data support for subsequent judgment on whether the current total hydrogen consumption of the dual fuel cell stack can reach the minimum.

[0042] In step S104 of some embodiments, the deviation between the power derivative of the first stack and the power derivative of the second stack may be determined using the following expression:

[0043] In the formula, is the deviation, that is, the absolute value of the difference between the first-order derivative of power of the first fuel cell stack and the first-order derivative of power of the second fuel cell stack. In the present application, by comparing the absolute value of the difference with the preset deviation threshold, it can be determined whether the slopes of the latest power-current curves of the two fuel cells are consistent, and then whether the current total hydrogen consumption of the dual fuel cell stack can be minimized.

[0044] In some embodiments, the above step S106 may include but is not limited to steps S501 to S502: Step S501, averaging the first-order power derivative of the first battery stack and the first-order power derivative of the second battery stack, and then subtracting the average result from the first-order power derivative of the first battery stack to obtain a first deviation, which can be determined using the following expression:

[0045] Step S502: Divide the first deviation and the second-order derivative of the power of the first battery stack, and then add the division result and the initial current of the first battery stack to obtain the target current of the first battery stack, which can be determined by the following expression:

[0046] In the formula, is the target current of the first battery stack, is the first deviation.

[0047] Steps S501 to S502 shown in the embodiment of the present application can help the first battery stack to efficiently and reliably adjust its output power by regulating the current of the first battery stack by utilizing the first-order derivative of the power of the dual battery stack and the second-order derivative of the power of the first battery stack.

[0048] In step S108 of some embodiments, the current of the first fuel cell stack is regulated according to the target current of the first fuel cell stack, that is, the current current of the first fuel cell stack is regulated to the target current of the first fuel cell stack.

[0049] In step S109 of some embodiments, the power of the second fuel cell stack is adjusted according to the second required power. The corresponding implementation process may include but is not limited to steps S601 to S602: Step S601, obtaining the power of the first battery stack after current regulation and recording it as the fifth power, that is, obtaining the current power of the first battery stack and recording it as the fifth power while executing the above step S108, and determining the second target power of the second battery stack according to the second required power and the fifth power, which can be determined by the following expression:

[0050] In the formula, is the second target power of the second fuel cell stack, is the second required power, is the fifth power; Step S602: According to the second target power of the second fuel cell stack, the power of the second fuel cell stack is adjusted, that is, the current power of the second fuel cell stack is adjusted to the second target power of the second fuel cell stack.

[0051] In steps S601 to S602 shown in the embodiment of the present application, the power of the second fuel cell stack is adjusted by taking the difference between the required power at the current moment and the current power of the first fuel cell stack as the target power of the second fuel cell stack, thereby effectively avoiding energy waste of the fuel cell system.

[0052] The dual-stack power distribution method proposed in the embodiment of the present application determines and compares the power derivatives of the dual stacks after adjusting the current of the dual stacks. When it is determined that the deviation between the power derivatives of the dual stacks is greater than or equal to a preset deviation threshold, the current of the first stack is adjusted and the power of the second stack is adjusted. The power derivatives of the dual stacks are re-determined and compared until it is determined that the deviation between the power derivatives of the dual stacks is less than the preset deviation threshold. The total hydrogen consumption of the dual stacks can be minimized, thereby increasing the endurance of the fuel cell system. By repeatedly obtaining the required power at the current moment and the required power at the previous moment and comparing them, it can be ensured that the dual stack is output adjusted under steady-state operation.

[0053] Figure 2 It is an optional composition diagram of a fuel cell system provided in an embodiment of the present application, wherein the fuel cell system includes a first fuel cell stack 701, a second fuel cell stack 702 and a fuel cell stack controller 703, wherein the first fuel cell stack 701 and the second fuel cell stack 702 are both controlled by the fuel cell stack controller 703, and the fuel cell stack controller 703 can implement the above-mentioned dual-stack power distribution method when powered on.

[0054] It can be understood that the contents of the above method embodiments are all applicable to the present system embodiments, the functions specifically implemented by the present system embodiments are the same as those of the above method embodiments, and the beneficial effects achieved are also the same as those achieved by the above method embodiments.

[0055] The embodiment of the present application also provides an electronic device, which includes a memory and a processor, wherein the memory stores a computer program, and the processor implements the above-mentioned dual-stack power distribution method when executing the computer program. The electronic device may include any intelligent terminal such as a tablet computer and a car computer.

[0056] It can be understood that the contents of the above method embodiments are all applicable to the present device embodiments, the functions specifically implemented by the present device embodiments are the same as those of the above method embodiments, and the beneficial effects achieved are also the same as those achieved by the above method embodiments.

[0057] See also Figure 3 , Figure 3 The hardware structure of an electronic device according to another embodiment is shown. The electronic device includes: The processor 801 may be implemented by a general-purpose CPU (Central Processing Unit), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solutions provided in the embodiments of the present application; The memory 802 can be implemented in the form of a read-only memory (ROM), a static storage device, a dynamic storage device, or a random access memory (RAM). The memory 802 can store an operating system and other application programs. When the technical solution provided in the embodiment of the present application is implemented by software or firmware, the relevant program code is stored in the memory 802, and the processor 801 calls and executes the technical solution provided in the embodiment of the present application; Input / output interface 803, used to implement information input and output; The communication interface 804 is used to realize the communication interaction between the device and other devices. The communication can be realized through wired means (such as USB, network cable, etc.) or wireless means (such as mobile network, WIFI, Bluetooth, etc.); A bus 805 that transmits information between various components of the device (e.g., the processor 801, the memory 802, the input / output interface 803, and the communication interface 804); The processor 801 , the memory 802 , the input / output interface 803 and the communication interface 804 are connected to each other in communication within the device via a bus 805 .

[0058] An embodiment of the present application also provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, the dual-stack power distribution method described above is implemented.

[0059] It can be understood that the contents of the above method embodiments are all applicable to the present storage medium embodiments, the functions specifically implemented by the present storage medium embodiments are the same as those of the above method embodiments, and the beneficial effects achieved are also the same as those achieved by the above method embodiments.

[0060] The memory, as a non-transient computer-readable storage medium, can be used to store non-transient software programs and non-transient computer executable programs. In addition, the memory may include a high-speed random access memory, and may also include a non-transient memory, such as at least one disk storage device, a flash memory device, or other non-transient solid-state storage device. In some embodiments, the memory may optionally include a memory remotely disposed relative to the processor, and these remote memories may be connected to the processor via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0061] The embodiments described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. Those skilled in the art will appreciate that with the evolution of technology and the emergence of new application scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0062] Those skilled in the art will appreciate that the technical solutions shown in the figures do not constitute a limitation on the embodiments of the present application, and may include more or fewer steps than shown in the figures, or a combination of certain steps, or different steps.

[0063] The system embodiments described above are merely illustrative, and the units described as separate components may or may not be physically separated, that is, they may be located in one place or distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the present embodiment.

[0064] Those skilled in the art will appreciate that all or some of the steps in the methods disclosed above, and the functional modules / units in the systems and devices may be implemented as software, firmware, hardware, or a suitable combination thereof.

[0065] The terms "first", "second", "third", "fourth", etc. (if any) in the specification of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0066] It should be understood that in the present application, "at least one (item)" means one or more, and "plurality" means two or more. "And / or" is used to describe the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the objects associated before and after are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.

[0067] In the several embodiments provided in the present application, it should be understood that the disclosed systems and methods can be implemented in other ways. For example, the system embodiments described above are only schematic. For example, the division of the above units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of systems or units, which can be electrical, mechanical or other forms.

[0068] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0069] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0070] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, 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, and the computer software product is stored in a storage medium, including multiple instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, referred to as ROM), random access memory (Random Access Memory, referred to as RAM), disk or optical disk and other media that can store programs.

[0071] The preferred embodiments of the present invention are described above with reference to the accompanying drawings, but the scope of the rights of the present invention is not limited thereto. Any modification, equivalent substitution and improvement made by a person skilled in the art without departing from the scope and essence of the present invention should be within the scope of the rights of the present invention.

Claims

1. A dual-stack power distribution method, characterized in that: The method is applied to a stack controller in a powered-on state, and the method comprises: Obtaining the required power at the current moment and recording it as the first required power, and adjusting the power of the first battery stack and the second battery stack according to the first required power; Obtaining the power demand at the current moment and the power demand at the previous moment, and when the power demand at the current moment is the same as the power demand at the previous moment, determining the power derivative of the first battery stack after adjusting the current up and down of the first battery stack, and determining the power derivative of the second battery stack after adjusting the current up and down of the second battery stack; Determine a deviation between a power derivative of the first battery stack and a power derivative of the second battery stack, and when the deviation is greater than or equal to a preset deviation threshold, determine a target current of the first battery stack according to the power derivative of the first battery stack and the power derivative of the second battery stack; Obtaining the required power at a current moment and the required power at a previous moment, recording the required power at the current moment as a second required power, and when the second required power is the same as the required power at the previous moment, regulating the current of the first fuel cell stack according to the target current of the first fuel cell stack; The second battery stack is power-regulated according to the second required power, and then the power derivative of the first battery stack is determined after the current is increased or decreased by the first battery stack, and the power derivative of the second battery stack is determined after the current is increased or decreased by the second battery stack.

2. The dual-stack power distribution method according to claim 1, characterized in that: The power regulation of the first fuel cell stack and the second fuel cell stack according to the first required power includes: Obtaining a rated power of the first fuel cell stack and a rated power of the second fuel cell stack; Determining a target power of the first fuel cell stack according to the first required power, the rated power of the first fuel cell stack, and the rated power of the second fuel cell stack; According to the target power of the first fuel cell stack, power regulation is performed on the first fuel cell stack; Determining a first target power of the second fuel cell stack according to the first required power and the target power of the first fuel cell stack; The second fuel cell stack is power regulated according to the first target power of the second fuel cell stack.

3. The dual-stack power distribution method according to claim 2, characterized in that: Determining the power derivative of the first battery stack after adjusting the current of the first battery stack includes: Acquiring an initial current of the first battery stack, and determining a current adjustment amount of the first battery stack according to the initial current of the first battery stack and a preset ratio; Adding an initial current of the first battery stack and a current adjustment amount of the first battery stack to obtain a first target current of the first battery stack; According to a first target current of the first battery stack, current regulation is performed on the first battery stack, and then a current power of the first battery stack is obtained and recorded as a first power; Subtracting an initial current of the first battery stack from a current adjustment amount of the first battery stack to obtain a second target current of the first battery stack; According to the second target current of the first battery stack, current regulation is performed on the first battery stack, and then a current power of the first battery stack is obtained and recorded as a second power; A first-order power derivative and a second-order power derivative of the first fuel cell stack are determined according to a target power of the first fuel cell stack, a current adjustment amount of the first fuel cell stack, the first power, and the second power.

4. The dual-stack power distribution method according to claim 3, characterized in that: Determining the power derivative of the second battery stack after adjusting the current of the second battery stack includes: Acquiring an initial current of the second battery stack, and determining a current adjustment amount of the second battery stack according to the initial current of the second battery stack and the preset ratio; Adding an initial current of the second battery stack and a current adjustment amount of the second battery stack to obtain a first target current of the second battery stack; According to the first target current of the second battery stack, current regulation is performed on the second battery stack, and then a current power of the second battery stack is obtained and recorded as a third power; Subtracting an initial current of the second battery stack from a current adjustment amount of the second battery stack to obtain a second target current of the second battery stack; According to the second target current of the second battery stack, current regulation is performed on the second battery stack, and then a current power of the second battery stack is obtained and recorded as a fourth power; The first-order derivative of the power of the second fuel cell stack is determined according to the current adjustment amount of the second fuel cell stack, the third power and the fourth power.

5. The dual-stack power distribution method according to claim 4, characterized in that: Determining the deviation between the power derivative of the first stack and the power derivative of the second stack includes: determining an absolute value of a difference between a first-order power derivative of the first stack and a first-order power derivative of the second stack.

6. The dual-stack power distribution method according to claim 4, characterized in that: Determining the target current of the first battery stack according to the power derivative of the first battery stack and the power derivative of the second battery stack includes: Averaging the first-order derivative of power of the first fuel cell stack and the first-order derivative of power of the second fuel cell stack, and then subtracting the first-order derivative of power of the first fuel cell stack from the average result to obtain a first deviation; The first deviation and the second-order derivative of the power of the first battery stack are divided, and the division result and the initial current of the first battery stack are added to obtain the target current of the first battery stack.

7. The dual-stack power distribution method according to claim 1, characterized in that: The power regulation of the second fuel cell stack according to the second required power includes: acquiring the power of the first fuel cell stack after current regulation and recording it as a fifth power, and determining a second target power of the second fuel cell stack according to the second required power and the fifth power; The power of the second fuel cell stack is regulated according to the second target power of the second fuel cell stack.

8. A fuel cell system, characterized in that: The fuel cell system includes a first fuel cell stack, a second fuel cell stack and a fuel cell stack controller, wherein the first fuel cell stack and the second fuel cell stack are controlled by the fuel cell stack controller, and the fuel cell stack controller is used to implement the method described in any one of claims 1 to 7 when in a powered-on state.

9. An electronic device, characterized in that: The electronic device comprises a memory and a processor, the memory stores a computer program, and the processor implements the method according to any one of claims 1 to 7 when executing the computer program.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 7 is implemented.

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