Dual stack power distribution method, fuel cell system, electronic device, and medium

Abstract

The application provides a dual-stack power distribution method, a fuel cell system, an electronic device and a medium, and belongs to the technical field of fuel cells. The method is applied to a stack controller that has been started, and comprises the following steps: acquiring demand power at the current moment to perform power adjustment on two stacks; acquiring demand power at the current moment and the previous moment, and when the demand power at the current moment is the same as the demand power at the previous moment, performing current rise and fall adjustment on the two stacks to determine power derivatives of the two stacks; when the deviation between the power derivatives of the two stacks is greater than or equal to a preset deviation threshold, determining a target current of a first stack according to the power derivatives of the two stacks; acquiring demand power at the current moment and the previous moment, and when the demand power at the current moment is the same as the demand power at the previous moment, performing current adjustment on the first stack according to the target current of the first stack, performing power adjustment on a second stack according to the demand power at the current moment, and returning to determine the power derivatives of the two stacks again. The application can minimize the total hydrogen consumption of the dual stacks when the dual stacks are in steady-state operation.

Description

TECHNICAL FIELD

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

[0002] A fuel cell system is provided with at least two stacks for power generation due to high power or safety redundancy, etc. Different stacks have inconsistent decay rates due to differences between the fuel cell itself and the environment, which is specifically manifested in inconsistent power-current curves of different stacks, and the output power of the stack is not in a proportional relationship with the fuel consumption rate. When a conventional power average distribution strategy is used for stack control, it is difficult to reduce the total hydrogen consumption of the fuel cell system, and therefore the existing power distribution strategy needs to be optimized. SUMMARY

[0003] The main purpose of the present application is to provide 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 stacks 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 powered-on state, and the method comprises:

[0005] Obtaining a demand power at a current time and recording it as a first demand power, and adjusting the power of a first stack and a second stack according to the first demand power;

[0006] Obtaining a demand power at a current time and a demand power at a previous time, and in the case that the demand power at the current time is the same as the demand power at the previous time, determining a power derivative of the first stack after current rise-fall adjustment of the first stack, and determining a power derivative of the second stack after current rise-fall adjustment of the second stack;

[0007] Determining a deviation between the power derivative of the first stack and the power derivative of the second stack, and in the case that the deviation is greater than or equal to a preset deviation threshold, determining a target current of the first stack according to the power derivative of the first stack and the power derivative of the second stack;

[0008] Obtaining a demand power at a current time and a demand power at a previous time, recording the demand power at the current time as a second demand power, and in the case that the second demand power is the same as the demand power at the previous time, adjusting the current of the first stack according to the target current of the first stack;

[0009] According to the second demand power, power adjustment is performed on the second stack, and then the power derivative of the first stack is determined after current step-up and step-down adjustment is performed on the first stack, and the power derivative of the second stack is determined after current step-up and step-down adjustment is performed on the second stack.

[0010] Further, the power adjustment performed on the first stack and the second stack according to the first demand power comprises:

[0011] The rated power of the first stack and the rated power of the second stack are obtained.

[0012] According to the first demand power, the rated power of the first stack and the rated power of the second stack, the target power of the first stack is determined.

[0013] According to the target power of the first stack, power adjustment is performed on the first stack.

[0014] According to the first demand power and the target power of the first stack, the first target power of the second stack is determined.

[0015] According to the first target power of the second stack, power adjustment is performed on the second stack.

[0016] Further, the determination of the power derivative of the first stack after current step-up and step-down adjustment is performed on the first stack comprises:

[0017] The initial current of the first stack is obtained, and the current adjustment amount of the first stack is determined according to the initial current of the first stack and a preset ratio.

[0018] The initial current of the first stack and the current adjustment amount of the first stack are added to obtain the first target current of the first stack.

[0019] According to the first target current of the first stack, current adjustment is performed on the first stack, and then the current power of the first stack is obtained and recorded as the first power.

[0020] The initial current of the first stack and the current adjustment amount of the first stack are subtracted to obtain the second target current of the first stack.

[0021] According to the second target current of the first stack, current adjustment is performed on the first stack, and then the current power of the first stack is obtained and recorded as the second power.

[0022] According to the target power of the first stack, the current adjustment amount of the first stack, the first power and the second power, the first-order power derivative and the second-order power derivative of the first stack are determined.

[0023] Further, the determining the power derivative of the second power stack after the current ramping regulation of the second power stack comprises:

[0024] obtaining an initial current of the second power stack, and determining a current adjustment amount of the second power stack according to the initial current of the second power stack and the preset ratio;

[0025] adding the initial current of the second power stack and the current adjustment amount of the second power stack to obtain a first target current of the second power stack;

[0026] performing current regulation on the second power stack according to the first target current of the second power stack, and then obtaining a current power of the second power stack and recording the current power as a third power;

[0027] subtracting the initial current of the second power stack and the current adjustment amount of the second power stack to obtain a second target current of the second power stack;

[0028] performing current regulation on the second power stack according to the second target current of the second power stack, and then obtaining a current power of the second power stack and recording the current power as a fourth power;

[0029] determining a first-order power derivative of the second power stack according to the current adjustment amount of the second power stack, the third power and the fourth power.

[0030] Further, the determining the deviation between the power derivative of the first power stack and the power derivative of the second power stack comprises: determining an absolute value of a difference between the first-order power derivative of the first power stack and the first-order power derivative of the second power stack.

[0031] Further, the determining the target current of the first power stack according to the power derivative of the first power stack and the power derivative of the second power stack comprises:

[0032] averaging the first-order power derivative of the first power stack and the first-order power derivative of the second power stack, subtracting the averaging result from the first-order power derivative of the first power stack to obtain a first deviation;

[0033] dividing the first deviation by the second-order power derivative of the first power stack, and adding the result of the division to the initial current of the first power stack to obtain the target current of the first power stack.

[0034] Further, the performing power regulation on the second power stack according to the second demand power comprises:

[0035] acquire a fifth power of the first stack after current regulation is performed, and determine a second target power of the second stack according to the second demand power and the fifth power;

[0036] perform power regulation on the second stack according to the second target power of the second stack.

[0037] To achieve the above object, another aspect of the present application provides a fuel cell system, which comprises a first stack, a second stack and a stack controller, the first stack and the second stack being controlled by the stack controller, and the stack controller being configured to implement the above method in a starting state.

[0038] To achieve the above object, another aspect of the present application provides an electronic device, which comprises a memory and a processor, the memory storing a computer program, and the processor being configured to implement the above method when executing the computer program.

[0039] To achieve the above object, another aspect of the present application provides a computer readable storage medium, which stores a computer program, and the computer program being configured to implement the above method when executed by a processor.

[0040] The present application has at least the following advantages: by determining the power derivatives of the double stacks after current rise and fall regulation is performed on the double stacks, and comparing the power derivatives, in the case that the deviation between the power derivatives of the double stacks is greater than or equal to a preset deviation threshold, current regulation is performed on the first stack and power regulation is performed on the second stack, and then the power derivatives of the double stacks are determined again and compared until the deviation between the power derivatives of the double stacks is less than the preset deviation threshold, the total hydrogen consumption of the double stacks can be minimized, thereby increasing the endurance of the fuel cell system; by acquiring the demand power at the current time and the demand power at the last time and comparing them for multiple times, it can be ensured that the double stacks perform output regulation in a steady state. BRIEF DESCRIPTION OF DRAWINGS

[0041] Figure 1 is a flowchart of a double-stack power distribution method provided by an embodiment of the present application;

[0042] Figure 2 is a component diagram of a fuel cell system provided by an embodiment of the present application;

[0043] Figure 3 is a hardware structure diagram of an electronic device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0044] In order to make the purposes, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application and not to limit the present application. When the following description refers to the accompanying drawings, identical numbers in different drawings represent identical or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with embodiments of the present application. They are merely examples of systems and methods consistent with some aspects of the embodiments of the present application as detailed in the appended claims.

[0045] It can be understood that the terms "first", "second", and the like used in the present application can be used herein to describe various concepts, but unless specifically stated, these concepts are not limited by these terms. These terms are only used to distinguish one concept from another. For example, without departing from the scope of the embodiments of the present application, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information. Depending on the context, the word "if" as used herein can be interpreted as "when" or "when" or "in response to determining".

[0046] The terms "at least one", "multiple", "each", "any", and the like used in the present application include one, two or more, multiple includes two or more, and each refers to each of the corresponding multiple, and any refers to any one of the multiple.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as understood by those skilled in the art to which the present application belongs. The terms used herein are only for the purpose of describing the embodiments of the present application and are not intended to limit the present application.

[0048] For the consideration of high power or safety redundancy, at least two stacks are provided for power generation in a fuel cell system. Due to the difference between the fuel cell itself and the environment, different stacks have inconsistent decay rates, which is specifically manifested as inconsistent power-current curves of different stacks, and the output power of the stack is not in a proportional relationship with its fuel consumption rate. When the conventional power average distribution strategy is used for stack control, it can be understood that the total demand power of the stacks is divided according to the number of stacks in the fuel cell system to obtain an average demand power, and then the average demand power is used to adjust the power of each stack in the fuel cell system. However, this implementation is difficult to effectively reduce the total hydrogen consumption of the fuel cell system, and therefore the existing power distribution strategy needs to be optimized.

[0049] Therefore, the embodiment of the present application provides a dual-stack power distribution method, a fuel cell system, an electronic device and a medium. The method determines the power derivatives of the dual stacks after current rise and fall adjustment of the dual stacks, compares the power derivatives, performs current adjustment on the first stack and power adjustment on the second stack when the deviation between the power derivatives of the dual stacks is greater than or equal to a preset deviation threshold, re-determines the power derivatives of the dual stacks and compares the power derivatives until the deviation between the power derivatives of the dual stacks is less than the preset deviation threshold, so that the total hydrogen consumption of the dual stacks is minimized, thereby increasing the endurance of the fuel cell system; by repeatedly obtaining and comparing the demand power at the current time and the demand power at the previous time, it can be ensured that the dual stacks are output adjusted under steady-state operation.

[0050] Figure 1 is an optional flowchart of a dual-stack power distribution method provided by the embodiment of the present application, Figure 1 The method in the embodiment of the present application is mainly applied to a stack controller in a startup running state. The method can include but is not limited to steps S101 to S109.

[0051] In step S101, the demand power at the current time is obtained and recorded as a first demand power. According to the first demand power, power adjustment is performed on the first stack and the second stack.

[0052] In step S102, the demand power at the current time and the demand power at the previous time are obtained, and it is determined whether the two are different. If yes, the above step S101 is returned to be executed. If no, step S103 is executed.

[0053] In step S103, the power derivative of the first stack is determined after current rise and fall adjustment of the first stack, and the power derivative of the second stack is determined after current rise and fall adjustment of the second stack.

[0054] In step S104, the deviation between the power derivative of the first stack and the power derivative of the second stack is determined, and it is determined whether the deviation is less than a preset deviation threshold. If yes, step S105 is executed. If no, step S106 is executed.

[0055] In step S105, the demand power at the current time and the demand power at the previous time are obtained and compared in real time until it is determined that the demand power at the current time and the demand power at the previous time are different, and then the above step S101 is returned to be executed.

[0056] In step S106, the target current of the first stack is determined according to the power derivative of the first stack and the power derivative of the second stack.

[0057] Step S107, obtaining the demand power at the current moment and the demand power at the last moment, recording the demand power at the current moment as a second demand power, and determining whether the two are different; if yes, returning to execute the step S101; if no, executing the step S108;

[0058] Step S108, performing current adjustment on the first stack according to the target current of the first stack;

[0059] Step S109, performing power adjustment on the second stack according to the second demand power, and returning to execute the step S103.

[0060] It should be noted that when the stack controller is switched from the running state to the shutdown state, the output adjustment control on the first stack and the second stack by the above-mentioned double-stack power distribution method is no longer continued, that is, no matter which step is executed, the whole output adjustment control process will be directly ended.

[0061] The steps S101 to S109 shown in the embodiments of the present application ensure that the deviation between the power derivatives of the two stacks is less than the preset deviation threshold by performing current adjustment on the first stack and power adjustment on the second stack in the case that the demand power at the current moment is the same as the demand power at the last moment, which can minimize the total hydrogen consumption of the double stacks in the steady state operation, thereby increasing the endurance of the fuel cell system.

[0062] In the step S101 of some embodiments, the power adjustment on the first stack and the second stack according to the first demand power can include but is not limited to steps S201 to S205:

[0063] Step S201, obtaining the rated power of the first stack and the rated power of the second stack;

[0064] Step S202, determining the target power of the first stack according to the first demand power, the rated power of the first stack and the rated power of the second stack, which can be determined by the following expression:

[0065]

[0066] In the formula, Ptarget is the target power of the first stack, is the power distribution ratio, is the first demand power, is the rated power of the first stack, is the rated power of the second stack;

[0067] In step S203, power adjustment is performed on the first stack according to the target power of the first stack, i.e., the current power of the first stack is adjusted to the target power of the first stack.

[0068] In step S204, a first target power of the second stack is determined according to the first demand power and the target power of the first stack. The first target power of the second stack can be determined by using the following expression:

[0069]

[0070] In the expression, Ptarget,2 is the first target power of the second stack.

[0071] In step S205, power adjustment is performed on the second stack according to the first target power of the second stack, i.e., the current power of the second stack is adjusted to the first target power of the second stack.

[0072] It should be noted that after the target power of the first stack and the first target power of the second stack are determined, power adjustment can be simultaneously performed on the first stack and the second stack, or power adjustment can be sequentially performed on the first stack and the second stack, i.e., power adjustment is first performed on the first stack and then performed on the second stack, or power adjustment is first performed on the second stack and then performed on the first stack, which is not limited in the present application.

[0073] The steps S201 to S205 shown in the embodiments of the present application can ensure that the two stacks are operated within their best working ranges by using the rated powers of the two stacks to distribute the demand power at the current time, thereby improving the reliability and stability of the fuel cell system.

[0074] In step S103 of some embodiments, the power derivative of the first stack includes a first-order power derivative and a second-order power derivative of the first stack. The power derivative of the first stack can be understood as a derivative of the power of the first stack with respect to the current, and the first-order power derivative of the first stack is a first-order derivative of the power of the first stack with respect to the current, and the second-order power derivative of the first stack is a second-order derivative of the power of the first stack with respect to the current. Similarly, the power derivative of the second stack includes a first-order power derivative of the second stack. The power derivative of the second stack can be understood as a derivative of the power of the second stack with respect to the current, and the first-order power derivative of the second stack is a first-order derivative of the power of the second stack with respect to the current.

[0075] In step S103 of some embodiments, the power derivative of the first stack is determined after the current of the first stack is adjusted. The corresponding implementation process can include, but is not limited to, steps S301 to S306:

[0076] ​In step S301, the initial current of the first stack is acquired, and the current adjustment amount of the first stack is determined according to the preset ratio and the initial current of the first stack. The current adjustment amount of the first stack can be determined by using the following expression:

[0077]

[0078] In the expression, I is the current adjustment amount of the first stack, I0 is the initial current of the first stack, is the preset ratio, and preferably is set to 0.1, ;

[0079] In step S302, the initial current of the first stack and the current adjustment amount of the first stack are added to obtain the first target current of the first stack.

[0080] In step S303, the current of the first stack is adjusted according to the first target current of the first stack, that is, the current of the first stack is adjusted to the first target current of the first stack, and then the current power of the first stack is acquired and recorded as the first power.

[0081] In step S304, the initial current of the first stack and the current adjustment amount of the first stack are subtracted to obtain the second target current of the first stack.

[0082] In step S305, the current of the first stack is adjusted according to the second target current of the first stack, that is, the current of the first stack is adjusted to the second target current of the first stack, and then the current power of the first stack is acquired and recorded as the second power.

[0083] In step S306, the first-order derivative of the power of the first stack and the second-order derivative of the power of the first stack are determined according to the first power, the second power, the current adjustment amount of the first stack and the target power of the first stack. The first-order derivative of the power of the first stack and the second-order derivative of the power of the first stack can be determined by using the following expression:

[0084]

[0085] In the expression, P is the first-order derivative of the power of the first stack, P0 is the second-order derivative of the power of the first stack, is the first power, is the second power.

[0086] ​​It should be noted that in the step S301, if the step S103 is sequentially executed after the step S102 is executed, the initial current of the first stack refers to the current of the first stack after the power adjustment is performed, that is, the initial current of the first stack is obtained at the same time when the step S203 is executed; if the step S103 is executed after the step S109 is executed, the initial current of the first stack refers to the target current of the first stack determined by the step S106.

[0087] The steps S301 to S306 shown in the embodiments of the present application are in the process of decaying at the moment, and the power-current curve of the first stack after working for a period of time will gradually deviate from the initial power-current curve at the time of leaving the factory. The latest power-current curve slope of the first stack is calculated by slightly shifting the working current of the first stack by using the perturbation observation method, thereby providing data support for subsequent judgment of whether the current total hydrogen consumption of the double stacks can reach the minimum.

[0088] In the step S103 of some embodiments, the power derivative of the second stack is determined after the current step-up and step-down adjustment of the second stack is performed, and the corresponding implementation process can include but is not limited to steps S401 to S406:

[0089] In step S401, the initial current of the second stack is obtained, and the current adjustment amount of the second stack is determined according to the preset proportion and the initial current of the second stack. The current adjustment amount of the second stack can be determined by using the following expression:

[0090]

[0091] In the formula, is the current adjustment amount of the second stack, is the initial current of the second stack;

[0092] In step S402, the initial current of the second stack and the current adjustment amount of the second stack are added to obtain the first target current of the second stack.

[0093] In step S403, the current of the second stack is adjusted according to the first target current of the second stack, that is, the current of the second stack is adjusted to the first target current of the second stack, and then the current power of the second stack is obtained and recorded as the third power.

[0094] In step S404, the initial current of the second stack and the current adjustment amount of the second stack are subtracted to obtain the second target current of the second stack.

[0095] Step S405, current adjustment is performed on the second stack according to the second target current of the second stack, that is, the current of the second stack is adjusted to the second target current of the second stack, and then the current power of the second stack is obtained and recorded as a fourth power;

[0096] Step S406, the power first derivative of the second stack is determined according to the third power, the fourth power and the current adjustment amount of the second stack, which can be determined by using the following expression:

[0097]

[0098] In the formula, is the power first derivative of the second stack, is the third power, is the fourth power.

[0099] It should be noted that in the above step S401, the initial current of the second stack refers to the current of the second stack after the power adjustment, if the above step S103 is sequentially executed after the above step S102 is executed, the initial current of the second stack is obtained at the same time when the above step S205 is executed; if the above step S103 is executed after the above step S109 is executed, the initial current of the second stack is obtained at the same time when the above step S109 is executed.

[0100] The steps S401 to S406 shown in the embodiments of the present application, the second stack is in the process of decaying at the moment, and the power-current curve thereof after working for a period of time will gradually deviate from the initial power-current curve at the time of factory delivery. Similarly, the working current of the second stack is slightly offset adjusted by using the perturbation observation method to calculate the latest power-current curve slope of the second stack, thereby providing data support for subsequent judgment of whether the current total hydrogen consumption of the double stacks can reach the minimum.

[0101] In step S104 of some embodiments, regarding the deviation between the power derivative of the first stack and the power derivative of the second stack, the following expression can be used to determine:

[0102]

[0103] In the formula, is the deviation, that is, the absolute value of the difference between the power first derivative of the first stack and the power first derivative of the second stack, in the present application, by comparing the absolute value of the difference with a preset deviation threshold, it can be judged whether the latest power-current curve slopes of the two stacks tend to be consistent, and further whether the current total hydrogen consumption of the double stacks can reach the minimum.

[0104] In some embodiments, the step S106 described above can include but is not limited to steps S501-S502:

[0105] In step S501, the first-order derivative of the power of the first stack and the first-order derivative of the power of the second stack are averaged, and the averaged result is subtracted from the first-order derivative of the power of the first stack to obtain a first deviation, which can be determined by the following expression:

[0106]

[0107] In step S502, the first deviation is divided by the second-order derivative of the power of the first stack, and the division result is added to the initial current of the first stack to obtain the target current of the first stack, which can be determined by the following expression:

[0108]

[0109] In the expression, is the target current of the first stack, is the first deviation.

[0110] The steps S501-S502 shown in the embodiments of the present application can help the first stack to efficiently and reliably adjust its output power by using the first-order derivative of the power of the double stack and the second-order derivative of the power of the first stack to adjust the current of the first stack.

[0111] In step S108 of some embodiments, the current of the first stack is adjusted according to the target current of the first stack, that is, the current of the first stack is adjusted to the target current of the first stack.

[0112] In step S109 of some embodiments, the power of the second stack is adjusted according to the second demand power, and the corresponding implementation process can include but is not limited to steps S601-S602:

[0113] In step S601, the power of the first stack after the current adjustment is obtained and denoted as the fifth power, that is, the current power of the first stack is obtained and denoted as the fifth power while the step S108 described above is executed, and the second target power of the second stack is determined according to the second demand power and the fifth power, which can be determined by the following expression:

[0114]

[0115] In the expression, is the second target power of the second stack, is the second demand power, is the fifth power;

[0116] In step S602, power adjustment is performed on the second stack according to the second target power of the second stack, that is, the current power of the second stack is adjusted to the second target power of the second stack.

[0117] The steps S601 to S602 shown in the embodiments of the present application can effectively avoid energy waste of the fuel cell system by taking the difference between the demand power at the current moment and the current power of the first stack as the target power of the second stack to adjust the power of the second stack.

[0118] The double-stack power distribution method provided by the embodiments of the present application can minimize the total hydrogen consumption of the double stack by performing current adjustment on the first stack and power adjustment on the second stack when it is determined that the deviation between the power derivatives of the double stack is greater than or equal to the preset deviation threshold, and then re-determining the power derivatives of the double stack and comparing them until it is determined that the deviation between the power derivatives of the double stack is less than the preset deviation threshold, thereby increasing the endurance of the fuel cell system; and the demand power at the current moment and the demand power at the previous moment can be obtained and compared multiple times to ensure that the double stack is adjusted in a steady state.

[0119] Figure 2 FIG. 1 is a schematic diagram of a fuel cell system according to an embodiment of the present application, which includes a first stack 701, a second stack 702, and a stack controller 703. The first stack 701 and the second stack 702 are controlled by the stack controller 703. The stack controller 703 can implement the double-stack power distribution method described above in a startup state.

[0120] It can be understood that the contents in the above method embodiments are applicable to the system embodiments, the system embodiments specifically implement the same functions as the above method embodiments, and achieve the same beneficial effects as the above method embodiments.

[0121] The embodiments of the present application further provide an electronic device including a memory and a processor. The memory stores a computer program, and the processor implements the double-stack power distribution method described above when executing the computer program. The electronic device can include any intelligent terminal such as a tablet computer or a vehicle-mounted computer.

[0122] It can be understood that the contents in the above method embodiments are applicable to the device embodiments, the device embodiments specifically implement the same functions as the above method embodiments, and achieve the same beneficial effects as the above method embodiments.

[0123] Please refer to Figure 3 ,Figure 3 An electronic device of another embodiment is illustrated, and the electronic device includes:

[0124] The processor 801 can be implemented by a general-purpose CPU (Central Processing Unit), a microprocessor, an ASIC (Application Specific Integrated Circuit), or one or more integrated circuits, and is configured to execute related programs to implement the technical solutions provided by the embodiments of the present application.

[0125] The memory 802 can be implemented by a ROM (Read-Only Memory), a static storage device, a dynamic storage device, or a RAM (Random Access Memory), and the like. The memory 802 can store an operating system and other application programs, and when the technical solutions provided by the embodiments of the present application are implemented by software or firmware, the related program codes are stored in the memory 802 and are called and executed by the processor 801 to implement the technical solutions provided by the embodiments of the present application.

[0126] The input / output interface 803 is configured to implement information input and output.

[0127] The communication interface 804 is configured to implement the communication interaction between the device and other devices, and can realize the communication through a wired manner (for example, a USB, a network cable, or the like) or a wireless manner (for example, a mobile network, WIFI, Bluetooth, or the like).

[0128] The bus 805 is configured to transmit information between various components (for example, the processor 801, the memory 802, the input / output interface 803, and the communication interface 804) of the device.

[0129] The processor 801, the memory 802, the input / output interface 803, and the communication interface 804 are connected to each other through the bus 805 to realize the communication connection between the devices.

[0130] The embodiments of the present application further provide a computer readable storage medium, which stores a computer program, and the computer program is executed by a processor to implement the double electric pile power distribution method.

[0131] It can be understood that the contents in 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 by the present storage medium embodiments are also the same as those achieved by the above method embodiments.

[0132] Memory, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs and non-transitory computer-executable programs. In addition, the memory can include a high-speed random access memory and can also include a non-transitory memory, such as at least one magnetic disk storage device, a flash memory device, or other non-transitory solid-state memory device. In some embodiments, the memory can optionally include a memory that is remotely disposed relative to the processor, and these remote memories can be connected to the processor through a network. Examples of the above network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0133] The embodiments described in the embodiments of the present application are used 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 by the embodiments of the present application. Those skilled in the art can know that, with the evolution of technology and the appearance of new application scenarios, the technical solutions provided by the embodiments of the present application are also applicable to similar technical problems.

[0134] Those skilled in the art can understand that the technical solutions shown in the figures do not constitute a limitation on the embodiments of the present application, and can include more or fewer steps than shown in the figures, or combine certain steps or different steps.

[0135] The system embodiments described above are only schematic, and the units described as separate components can or can not be physically separate, that is, can be located in one place or distributed on multiple network units. Part or all of the modules can be selected according to actual needs to achieve the purpose of the embodiments of the present application.

[0136] Those skilled in the art can understand that all or some of the steps in the above disclosed method, the functional modules / units in the system and the device can be implemented as software, firmware, hardware and appropriate combinations thereof.

[0137] The terms "first", "second", "third", "fourth" and the like used in the description of the present application and the above figures, if any, are used to distinguish similar objects, and do not necessarily have to describe a particular order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0138] It should be understood that, in the application, "at least one" refers to one or more, and "multiple" refers to two or more. "And / or" is used to describe the association relationship of the associated objects, which means that there can be three relationships, for example, "A and / or B" can represent three cases of only A, only B and A and B existing at the same time, wherein A and B can be singular or plural. The character " / " generally represents an "or" relationship between the front and rear associated objects. "At least one of the following" or the like means any combination of these items, including any combination of single or multiple items. For example, at least one of a, b or c can represent a, b, c, "a and b", "a and c", "b and c", or "a and b and c", wherein a, b and c can be single or multiple.

[0139] In several embodiments provided in the application, it should be understood that the disclosed system and method can be implemented in other ways. For example, the system embodiments described above are only illustrative, for example, the division of the above units is only a logical function division, and actual implementation can have another division mode, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the displayed or discussed units can be indirect coupling or communication connection between systems or units through some interfaces, which can be electrical, mechanical or other forms.

[0140] The units described above as separate components can or can not be physically separated, and the components displayed as units can or can not be physical units, that is, they can be located in one place, or they can be distributed on multiple network units. According to actual needs, part or all of the units can be selected to achieve the purpose of the embodiment scheme.

[0141] In addition, the functional units in each embodiment of the application can be integrated in one processing unit, or each unit can be physically present separately, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or in the form of a software functional unit.

[0142] The integrated unit, if implemented in the form of a software function unit and sold or used as an independent product, can be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application, essentially or in other words, the part that contributes to the prior art or the whole or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium, and includes multiple instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods of the various embodiments of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and various program storage media.

[0143] The preferred embodiments of the embodiments of the present application are described above with reference to the accompanying drawings, and are not limited to the scope of the embodiments of the present application. Any modifications, equivalent replacements and improvements made by those skilled in the art without departing from the scope and essence of the embodiments of the present application shall be within the scope of the embodiments of the present application.

Claims

1. A dual-stack power distribution method, characterized in that, The method is applied to an electric stack controller in the power-on state, and the method includes: Step S101: Obtain the required power at the current moment and record it as the first required power. Adjust the power of the first fuel cell stack and the second fuel cell stack according to the first required power. Step S102: Obtain the power demand at the current moment and the power demand at the previous moment, and determine whether the power demand at the current moment and the power demand at the previous moment are different; if yes, return to step S101; if no, proceed to step S103. Step S103: After adjusting the current rise and fall of the first fuel cell stack, determine the power derivative of the first fuel cell stack; after adjusting the current rise and fall of the second fuel cell stack, determine the power derivative of the second fuel cell stack. Step S104: Determine the deviation between the power derivative of the first fuel cell stack and the power derivative of the second fuel cell stack, and determine whether the deviation is less than a preset deviation threshold; if yes, proceed to step S105; if no, proceed to step S106. Step S105: Obtain the current power demand and the previous power demand in real time and make a judgment until it is determined that the current power demand and the previous power demand are different, then return to execute step S101. Step S106: Determine the target current of the first battery stack based on the power derivative of the first battery stack and the power derivative of the second battery stack; Step S107: Obtain the demand power at the current moment and the demand power at the previous moment, record the demand power at the current moment as the second demand power, and determine whether the second demand power is different from the demand power at the previous moment; if yes, return to step S101; if no, proceed to step S108. Step S108: Adjust the current of the first fuel cell stack according to the target current of the first fuel cell stack; Step S109: Adjust the power of the second fuel cell stack according to the second required power, and then return to step S103.

2. The dual-stack power distribution method according to claim 1, characterized in that, The step of adjusting the power of the first and second fuel cells according to the first required power includes: Obtain the rated power of the first fuel cell stack and the rated power of the second fuel cell stack; The target power of the first fuel cell stack is determined based on the first required power, the rated power of the first fuel cell stack, and the rated power of the second fuel cell stack. The power of the first fuel cell stack is adjusted according to the target power of the first fuel cell stack. Based on the first required power and the target power of the first fuel cell stack, determine the first target power of the second fuel cell stack; The power of the second fuel cell stack is 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 fuel cell after adjusting the current rise and fall of the first fuel cell includes: The initial current of the first fuel cell stack is obtained, and the current adjustment amount of the first fuel cell stack is determined based on the initial current of the first fuel cell stack and a preset ratio. The initial current of the first fuel cell stack and the current adjustment amount of the first fuel cell stack are added together to obtain the first target current of the first fuel cell stack. Based on the first target current of the first fuel cell stack, the current of the first fuel cell stack is adjusted, and then the current power of the first fuel cell stack is obtained and recorded as the first power; Subtract the initial current of the first fuel cell stack from the current adjustment amount of the first fuel cell stack to obtain the second target current of the first fuel cell stack. Based on the second target current of the first fuel cell stack, the current of the first fuel cell stack is adjusted, and then the current power of the first fuel cell stack is obtained and recorded as the second power; Based on the target power of the first fuel cell, the current adjustment amount of the first fuel cell, the first power, and the second power, determine the first power first derivative and the second power second derivative of the first fuel cell.

4. The dual-stack power distribution method according to claim 3, characterized in that, Determining the power derivative of the second fuel cell after adjusting the current rise and fall of the second fuel cell includes: Obtain the initial current of the second battery stack, and determine the current adjustment amount of the second battery stack based on the initial current of the second battery stack and the preset ratio; The initial current of the second battery stack and the current adjustment amount of the second battery stack are added together to obtain the first target current of the second battery stack. Based on the first target current of the second fuel cell stack, the current of the second fuel cell stack is adjusted, and then the current power of the second fuel cell stack is obtained and recorded as the third power; Subtract the initial current of the second battery stack from the current adjustment amount of the second battery stack to obtain the second target current of the second battery stack; Based on the second target current of the second fuel cell, the current of the second fuel cell is adjusted, and then the current power of the second fuel cell is obtained and recorded as the fourth power; The power first derivative of the second fuel cell is determined based on the current adjustment of the second fuel cell, 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 fuel cell and the power derivative of the second fuel cell includes determining the absolute value of the difference between the first power derivative of the first fuel cell and the first power derivative of the second fuel cell.

6. The dual-stack power distribution method according to claim 4, characterized in that, Determining the target current of the first fuel cell stack based on the power derivative of the first fuel cell stack and the power derivative of the second fuel cell stack includes: The first deviation is obtained by averaging the first power derivative of the first battery stack and the first power derivative of the second battery stack, and then subtracting the average result from the first power derivative of the first battery stack. Divide the first deviation by the second derivative of the power of the first fuel cell, and then add the result of the division to the initial current of the first fuel cell to obtain the target current of the first fuel cell.

7. The dual-stack power distribution method according to claim 1, characterized in that, The step of adjusting the power of the second fuel cell stack according to the second required power includes: The power of the first fuel cell stack after current regulation is obtained and recorded as the fifth power. Based on the second required power and the fifth power, the second target power of the second fuel cell stack is determined. 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. The first fuel cell stack and the second fuel cell stack are controlled by the fuel cell stack controller, which, when powered on, is used to implement the method according to any one of claims 1 to 7.

9. An electronic device, characterized in that, The electronic device includes a memory and a processor, the memory storing a computer program, and the processor executing the computer program to implement the method according to any one of claims 1 to 7.

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

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