WO2024125535A1

WO2024125535A1 - Output power control method and system for hydrogen fuel cell system, and device and medium

Info

Publication number: WO2024125535A1
Application number: PCT/CN2023/138318
Authority: WO
Inventors: 麦建明; 白云飞
Original assignee: 上海氢晨新能源科技有限公司
Priority date: 2022-12-16
Filing date: 2023-12-13
Publication date: 2024-06-20
Also published as: CN115799579B; CN115799579A

Abstract

The present invention provides an output power control method and system for a hydrogen fuel cell system, and a device and a medium. The method comprises: acquiring a target output power of a hydrogen fuel cell system; and determining an air compressor control signal for a cathode loop of a fuel cell according to the target output power, and adjusting the cathode loop on the basis of the air compressor control signal, such that the output power of the hydrogen fuel cell approaches the target output power, wherein the air compressor control signal and the target output power meet a preset output function. The method further comprises: acquiring deviation information of a first-type variable and of a second-type variable, which are output by the hydrogen fuel cell, from a preset characteristic curve; and an electrical loop of the hydrogen fuel cell system performing adjustment according to the deviation information, such that the variables tend to be on the preset characteristic curve. In the present invention, insofar as the target output power is confirmed, the preset output function is used for regulating the air compressor control signal, such that the actual power output requirement can be met according to the output function in different application scenes; and the application range is wide, and the control implementation effect is good.

Description

Output power control method, system, device and medium of hydrogen fuel cell system

Technical Field

The present invention relates to the field of hydrogen fuel cell technology, and in particular to an output power control method, system, device and medium for a hydrogen fuel cell system.

Background technique

The hydrogen fuel cell system includes at least three subsystems: the cooling circuit, the cathode circuit, and the power circuit. The multiple subsystems coordinate and restrict each other. The set values are changed in turn during the output process, and they wait for them to reach and stabilize at the set values. The cathode circuit controls the back pressure valve and the air compressor at the same time according to the instructions of the fuel cell engine control system, so that the flow and pressure of the cathode circuit reach the specified values. Due to the mutual coupling of flow, pressure and gas consumption, the performance of the battery stack fluctuates greatly during the variable load process. In addition, it adopts control strategies such as constant current, constant pressure, and constant power. It can only input signals according to the system power demand, calculate and call the corresponding operating parameters such as pressure and flow, and the operating parameters correspond to the system power demand one by one, which is not suitable for actual application needs in a wide range of application scenarios.

Summary of the invention

The present invention provides an output power control method, system, device and storage medium for a hydrogen fuel cell system, which are used to solve the problem in the prior art that the control strategy of the hydrogen fuel cell system is fixed, the performance of the fuel cell stack fluctuates greatly, and it is not suitable for actual application needs in a wide range of application scenarios, and realize multi-factor power control of the hydrogen fuel cell system.

In a first aspect, the present invention provides an output power control method for a hydrogen fuel cell system, comprising:

Obtaining a target output power of a hydrogen fuel cell system;

confirming an air compressor control signal of a cathode circuit of the fuel cell according to the target output power, and adjusting the cathode circuit based on the air compressor control signal so that the output power of the hydrogen fuel cell approaches the target output power;

Wherein, the air compressor control signal and the target output power conform to a preset output function.

According to a method for controlling output power of a hydrogen fuel cell system provided by the present invention, the control method The law also includes:

The back pressure valve and/or the exhaust valve are adjusted according to the changing state of the hydrogen fuel cell system so that the system state meets the preset state requirements.

According to an output power control method of a hydrogen fuel cell system provided by the present invention, the control method further includes:

Obtaining deviation information between the first-class variable and the second-class variable output by the hydrogen fuel cell and a preset characteristic curve;

The electrical circuit of the hydrogen fuel cell system is adjusted according to the deviation information so that the first type of variables and the second type of variables tend to a preset characteristic curve.

According to an output power control method of a hydrogen fuel cell system provided by the present invention, the one type of variable is the output current or output current density of the hydrogen fuel cell system, or a variable calculated therefrom;

The second type of variables are the output voltage, output power or internal resistance compensated output voltage of the hydrogen fuel cell system, or variables calculated therefrom.

According to an output power control method of a hydrogen fuel cell system provided by the present invention, the output function is a monotonic function.

According to a method for controlling the output power of a hydrogen fuel cell system provided by the present invention, the air compressor control signal is the air compressor torque, speed, current, power or PWM duty cycle, or a variable calculated therefrom.

In a second aspect, the present invention further provides an output power control system of a hydrogen fuel cell system, comprising:

A target acquisition unit, used to acquire a target output power of the hydrogen fuel cell system;

An output control unit is used to confirm the air compressor control signal of the cathode circuit of the fuel cell according to the target output power, and adjust the cathode circuit based on the air compressor control signal so that the output power of the hydrogen fuel cell tends to the target output power; wherein the air compressor control signal and the target output power conform to a preset output function.

The present invention also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, an output power control system of any of the above-mentioned hydrogen fuel cell systems is implemented.

The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the output power of any of the above-mentioned hydrogen fuel cell systems is realized. Control System.

The output power control method, system, device and medium of the hydrogen fuel cell system provided by the present invention, after confirming the target output power, use a preset output function to regulate the air compressor control signal, and can solve the actual power output demand according to the output function in different application scenarios. It has a wide range of applications and good control implementation effect. In addition, after adjusting the cathode circuit based on the air compressor control signal, the back pressure valve and/or the exhaust valve can be adjusted according to the changing state of the hydrogen fuel cell system, thereby reducing the mutual coupling effect of flow and pressure during the control and adjustment process, and performing follow-up control adjustment on the hydrogen fuel cell with a sequence, thereby realizing multi-factor power control of the hydrogen fuel cell system, with flexible control strategy and small fluctuation in stack performance, and suitable for the control of hydrogen fuel cell systems with different application requirements.

Other features and advantages of the present application will be described in the following description, and partly become apparent from the description, or be understood by practicing the embodiments of the present application. The purpose and other advantages of the present application can be realized and obtained by the structures specifically pointed out in the written description, claims, and drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

FIG1 is a schematic diagram of a flow chart of a method for controlling output power of a hydrogen fuel cell system provided by the present invention;

FIG2 is a second flow chart of the output power control method of the hydrogen fuel cell system provided by the present invention;

FIG3 is a schematic diagram of a condition curve and a characteristic curve provided by the present invention;

FIG4 is a schematic structural diagram of a hydrogen fuel cell system provided by the present invention;

FIG5 is a schematic diagram of an output function provided by the present invention;

FIG6 is a schematic diagram of the structure of an output power control system of a hydrogen fuel cell system provided by the present invention;

FIG. 7 is a schematic diagram of the structure of an electronic device provided by the present invention.

Detailed ways

The following embodiments of the technical solution of the present application will be described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

The following describes an output power control method of a hydrogen fuel cell system of the present invention in conjunction with FIG1, comprising:

Step 1: Obtain the target output power of the hydrogen fuel cell system;

Step 2: confirming the air compressor control signal of the cathode circuit of the fuel cell according to the target output power, and adjusting the cathode circuit based on the air compressor control signal so that the output power of the hydrogen fuel cell approaches the target output power. The air compressor control signal and the target output power meet a preset output function.

Further, as shown in FIG2 , the present invention comprises the following steps:

S201, obtaining the target output power; S202, confirming the air compressor control signal according to the target output power; S203, adjusting the cathode circuit according to the air compressor control signal, and then adjusting the cathode gas flow; S204, as the cathode gas flow changes, the output power of the hydrogen fuel cell tends to the target output power.

Specifically, the hydrogen fuel cell system of the present invention includes a cooling circuit, a cathode circuit and a power circuit. A subsystem, after obtaining the target output power in the above step 1, the cathode circuit obtains the corresponding air compressor control signal according to the target output power and the preset output function between the target output power, and adjusts the air compressor based on the air compressor control signal, thereby changing the gas flow of the fuel cell stack, so that the output power of the fuel cell changes and tends to the target output power.

It should be noted that the present invention tends to include but is not limited to reducing the difference between the output power of the fuel cell and the target output power.

As a preferred solution, the present invention obtains an air compressor control signal based on a preset output function, which can make the output power of the hydrogen fuel cell system the same as the target output power, thereby achieving effective control of the output power of the hydrogen fuel cell system.

The present invention uses a preset output function to regulate the air compressor control signal when the target output power is confirmed, and can solve the actual power output demand according to the output function in different application scenarios. It has a wide range of applications and good control implementation effect.

In a preferred embodiment, the control method further comprises:

Specifically, when the target output power of the hydrogen fuel cell system is obtained in step 1 and the cathode circuit is adjusted based on the air compressor control signal in step 2, the system state of the hydrogen fuel cell system changes, that is, after the air compressor is adjusted, the gas flow rate input to the stack changes. In this embodiment, by following the change of the above-mentioned gas flow rate, the back pressure valve and/or the exhaust valve are adjusted, and the air pressure is adjusted so that the system state meets the preset state requirements.

Furthermore, for example, when the target output power of the current step is greater than the actual output power of the previous step, the current step obtains the target output power, and obtains the corresponding air compressor control signal based on the preset output function to adjust the air compressor to increase the air flow; after the system detects that the air flow has increased, it adjusts the back pressure valve opening to stabilize the air pressure in the system. It is undisputed that the present invention can also perform follow-up adjustment on the exhaust valve alone, or adjust the back pressure valve and the exhaust valve at the same time to stabilize the air pressure in the system.

Specifically, the state requirement is the requirement for the normal and stable operation of the hydrogen fuel cell system, such as meeting the humidity change requirement of the fuel cell stack. Those skilled in the art are capable of adjusting the follow-up adjustment strategy of the back pressure valve and the exhaust valve according to the characteristics of the hydrogen fuel cell system, so that the follow-up adjustment of the back pressure valve and/or the exhaust valve meets the requirements. Preset status requirements.

After adjusting the cathode circuit based on the air compressor control signal, the present invention adjusts the back pressure valve and/or the exhaust valve according to the changing state of the hydrogen fuel cell system, thereby reducing the mutual coupling influence of flow and pressure in the control and adjustment process, and performing follow-up control and adjustment of the hydrogen fuel cell with a sequence, thereby realizing multi-factor power control of the hydrogen fuel cell system, with flexible control strategy and small fluctuation in stack performance, and being suitable for the control of hydrogen fuel cell systems with different application requirements.

The hydrogen fuel cell system of the present invention has three subsystems, as shown in FIG4 . The cooling circuit has a long loading time due to the large inertia of the water pump and the medium. The cathode circuit subsystem has a long loading time due to the large inertia of the air compressor and the large medium flow rate. The present invention can save the time required to wait for the cathode gas supply conditions to reach the new set value and stabilize, so that a higher load-changing response speed can be achieved, the gas consumption and supply changes during the load-changing process can be reduced, and the service life of the fuel cell stack can be extended.

In another preferred embodiment, the control method further comprises:

The deviation information of the first and second type variables output by the hydrogen fuel cell and a preset characteristic curve is obtained; the electrical circuit of the hydrogen fuel cell system is adjusted according to the deviation information so that the first and second type variables tend to the preset characteristic curve.

In this embodiment, the characteristic curve is a curve directly or indirectly related to the first-class variable and the second-class variable. Exemplarily, the horizontal and vertical coordinates of the characteristic curve are the first-class variable and the second-class variable, respectively, to limit the first-class variable and the second-class variable.

Specifically, in order to make the first-class variable and the second-class variable tend to the preset characteristic curve, the deviation information of the point on the characteristic curve closest to the first-class variable and the second-class variable can be obtained, including the deviation distance and the deviation direction. The control variable of the output control module can be adjusted according to the deviation, and the distance between the first-class variable and the second-class variable and the characteristic curve can be made close to or equal to 0 by using the adjustment means of open-loop control or closed-loop control.

Exemplarily, for ease of explanation, as shown in FIG3, when the state parameters of the hydrogen fuel cell remain unchanged, within the reasonable range of the first-class variables, each first-class variable can correspond to a second-class variable, and this correspondence forms a series of first-class variable-second-class variable fixed condition curves corresponding to fixed conditions, hereinafter referred to as condition curves. Changes in the state of the hydrogen fuel cell will cause the first-class variables and the second-class variables to change on the condition curves; when the first-class variables and the control variables remain unchanged, changes in the output control circuit of the hydrogen fuel cell will cause changes in the second-class variables; when the control variables remain unchanged, changes in the state parameters of the hydrogen fuel cell will cause changes in the first-class variables and the second-class variables. For ease of explanation, the following embodiments are based on the first-class variables, The second type of variable meets the condition curve for example. However, the present invention is not limited to the case where the first type of variable and the second type of variable meet the condition curve. When the first type of variable and the second type of variable do not meet the condition curve, those skilled in the art can also adjust the control variable according to the information of the hydrogen fuel cell so that the first type of variable and the second type of variable meet the preset characteristic curve.

Specifically, the preset first-class variable-second-class variable characteristic curve of the present invention, hereinafter referred to as the characteristic curve, does not overlap with any of the above-mentioned conditional curves, but intersects with a series of conditional curves, and has only a limited number of intersections with each intersecting conditional curve; during system operation, when the actual values of the first-class variables and the second-class variables deviate from the characteristic curve, the control variables are adjusted according to the deviation direction and deviation size to make the first-class variables and the second-class variables output by the hydrogen fuel cell return to the characteristic curve.

As shown in Figures 3 and 4, the power circuit subsystem of the power subcircuit has the fastest response time due to the high switching frequency and fast duty cycle adjustment. The power circuit subsystem automatically adjusts the power circuit in real time in a manner that maintains the predetermined characteristic curve according to the actual output performance of the stack during the change of the cathode gas supply conditions, saving the time required to wait for the cathode gas supply conditions to reach the new set value and stabilize, and saving the time consumed by the limited load change rate of the power circuit, so that a higher load change response speed can be achieved. At the same time, since the output voltage and current of the stack are maintained on the predetermined characteristic curve, the catalyst potential fluctuation can be reduced, the gas consumption and supply changes during the load change process can be reduced, and the service life of the stack can be extended.

The present invention controls the control variables according to the deviation information between the first and second type of variables and the characteristic curve, controls the entire hydrogen fuel cell system to always maintain the output characteristics corresponding to the preset characteristic curve, achieves millisecond-level response time through the output control circuit, and improves the stability and service life of the hydrogen fuel cell.

As a preferred solution, in order to achieve the regulation of Class I and Class II variables, negative feedback control method or positive feedback control method can be used to control the control variables. The control purpose is to make Class I and Class II variables tend to the characteristic curve.

In this embodiment, the following hydrogen fuel cell parameters are taken as an example: the first type of variable is the stack output current, the second type of variable is the stack output voltage, and the first type of variable and the second type of variable are adjusted by changing the DC transformer output switch duty cycle; through automatic feedback control of the DC transformer output duty cycle, the hydrogen fuel cell output current and output voltage are maintained on the preset characteristic curve.

Taking the negative feedback control method as an example and taking the working state as the reference state, the control process is as follows:

Real-time monitoring of the output current and output voltage of the hydrogen fuel cell stack, and comparing them with the preset characteristic curve In contrast, the output current and output voltage of the hydrogen fuel cell are adjusted on the input side of the hydrogen fuel cell output DC transformer FDC, and the adjustment process includes:

If the output current and output voltage are below the target volt-ampere characteristic curve of the stack, the fuel cell output DC transformer reduces the output current by adjusting the duty cycle of the internal DC transformer circuit, thereby increasing the output voltage and approaching the characteristic curve;

If the output current and output voltage are above the target volt-ampere characteristic curve of the stack, the fuel cell output DC transformer increases the output current by adjusting the duty cycle of the internal DC transformer circuit, thereby reducing the output voltage and approaching the characteristic curve.

In this embodiment, the output current and output voltage of the hydrogen fuel cell are adjusted on the input side of the hydrogen fuel cell output DC transformer. When the operating parameters of the hydrogen fuel cell are maintained or changed, the switching duty cycle of the Buck-Boost circuit electronic devices is adjusted so that the current and voltage values on the input side are always on the target volt-ampere characteristic curve of the fuel cell stack, thereby outputting electrical energy according to the predetermined output performance of the hydrogen fuel cell.

This implementation ensures that the current and voltage values entering the input side of the transformer are on the preset volt-ampere characteristic curve of the fuel cell stack, so that the entire fuel cell system always maintains the preset output characteristics. It not only achieves millisecond-level response time through duty cycle control on the transformer side, but also improves the stability and service life of the fuel cell stack operation.

Specifically, this embodiment sets the target parameter of FDC control as the distance between the current and voltage output by the fuel cell stack and the target volt-ampere characteristic curve on the volt-ampere characteristic curve diagram; if the actual output current and voltage of the fuel cell stack are below the target curve, the fuel cell stack output electric energy is reduced through FDC to reduce the actual output current of the fuel cell stack and increase the voltage, approaching the target curve from below; if the actual output current and voltage of the fuel cell stack are above the target curve, the fuel cell stack output electric energy is increased through FDC to increase the actual output current of the fuel cell stack and reduce the voltage, approaching the target curve from above.

This implementation uses FDC as an important part of the stack control. Since the circuit response speed in FDC is much higher than the components of the hydrogen circuit and the air circuit, the fast response characteristics of FDC can be used to lock the actual output of the stack on the characteristic curve during the dynamic changes of the hydrogen circuit and the air circuit components, thereby improving the operating stability and service life of the stack.

When in operation, the duty cycle of the fuel cell output DC transformer is adjusted by calculating the difference between the output current and output voltage of the fuel cell stack and the target volt-ampere characteristic curve of the fuel cell stack;

The difference value is the voltage difference under the same current, the current difference under the same voltage, or the voltage difference, The value obtained by calculating the current difference.

If the voltage difference is used as the difference value, when in operation, the duty cycle adjustment process of the fuel cell output DC transformer is as follows:

Calculate the difference between the output current and output voltage of the fuel cell stack and the corresponding point in the target volt-ampere characteristic curve of the fuel cell stack, which is the voltage difference;

If the difference value is equal to zero, that is, the actual output current and voltage of the fuel cell are within the target volt-ampere characteristic curve, the duty cycle is kept unchanged;

If the difference is greater than zero, that is, the actual output current and voltage of the fuel cell are above the target volt-ampere characteristic curve, the duty cycle is adjusted to increase the output current of the fuel cell stack;

If the difference is less than zero, that is, the actual output current and voltage of the fuel cell are below the target volt-ampere characteristic curve, the duty cycle is adjusted to reduce the output current of the fuel cell stack.

In another preferred embodiment, one type of variable is the output current of the hydrogen fuel cell system or the output current density of the hydrogen fuel cell, or a variable calculated therefrom;

In the present invention, the response speeds of the three subsystems of the hydrogen fuel cell are reasonably distributed to achieve follow-up control of the gas circuit and coordinated characteristic curve control of the power circuit. The power regulation process of the fuel cell system is optimized based on the response speeds at different levels to achieve multi-factor power control of the hydrogen fuel cell system. The control strategy is flexible, and the performance fluctuation of the stack is small. It is suitable for the control of hydrogen fuel cell systems with different application requirements.

In another preferred embodiment, the output function is a monotonic function. In the present invention, the relationship between the target output power and the air compressor control signal is monotonically increasing or decreasing, so the output function is a monotonic function, and the output functions of the two can be calibrated according to the specific parameters of the hydrogen fuel system.

Specifically, as shown in Figure 5, the functional relationship between the target output power S1 and the air compressor control signal S2 is monotonically increasing or monotonically decreasing. Taking the functional relationship between the target output power and the air compressor control signal as a positive proportional function as an example, after obtaining the target output power, the corresponding air compressor control signal can be matched according to the output function, and then the hydrogen fuel cell system can be controlled according to the air compressor control signal.

In another preferred embodiment, the air compressor control signal is the air compressor torque, speed, current, power or PWM duty cycle, or a variable calculated therefrom. Effective regulation can be carried out to adjust the speed, power or flow of the air compressor, so that the cathode circuit changes and the output power can be adjusted.

The output power control system of a hydrogen fuel cell system provided by the present invention is described below. The output power control system of a hydrogen fuel cell system described below and the output power control method of a hydrogen fuel cell system described above can be referred to each other.

An output power control system of a hydrogen fuel cell system, as shown in FIG6 , includes: a target acquisition unit 601 for acquiring a target output power of the hydrogen fuel cell system;

The output control unit 602 is used to confirm the air compressor control signal of the cathode circuit of the fuel cell according to the target output power, and adjust the cathode circuit based on the air compressor control signal so that the output power of the hydrogen fuel cell tends to the target output power; wherein the air compressor control signal and the target output power conform to a preset output function.

FIG7 is a schematic diagram of an electronic device provided in an embodiment of the present application. Referring to FIG7, the electronic device 700 includes: a processor 710, a memory 720, and a communication interface 730. These components are interconnected and communicate with each other through a communication bus 740 and/or other forms of connection mechanisms (not shown) to perform an output power control method for a hydrogen fuel cell system, including: Step 1: Obtain the target output power of the hydrogen fuel cell system; Step 2: Confirm the air compressor control signal of the cathode circuit of the fuel cell according to the target output power, and adjust the cathode circuit based on the air compressor control signal so that the output power of the hydrogen fuel cell approaches the target output power. Wherein, the air compressor control signal and the target output power conform to a preset output function.

The memory 720 includes one or more (only one is shown in the figure), which may be, but not limited to, a random access memory (RAM), a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable read-only memory (EEPROM), etc. The processor 710 and other possible components may access the memory 720 to read and/or write data therein.

The processor 710 includes one or more (only one is shown in the figure), which can be an integrated circuit chip with signal processing capabilities. The above-mentioned processor 710 can be a general-purpose processor, including a central processing unit (CPU), a microcontroller unit (MCU), and a processor. It may be a computer programmable logic device (MCU), a network processor (NP) or other conventional processors; it may also be a special-purpose processor, including a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, and discrete hardware components.

The communication interface 730 includes one or more (only one is shown in the figure), which can be used to communicate directly or indirectly with other devices to exchange data. For example, the communication interface 730 can be an Ethernet interface; it can be a mobile communication network interface, such as an interface of a 3G, 4G, or 5G network; or it can be other types of interfaces with data transceiving functions.

One or more computer program instructions may be stored in the memory 720 , and the processor 710 may read and execute these computer program instructions to implement the output power control method of the hydrogen fuel cell system provided in the embodiment of the present application and other desired functions.

It is understood that the structure shown in FIG. 7 is for illustration only, and the electronic device 700 may also include more or fewer components than those shown in FIG. 7 , or have a configuration different from that shown in FIG. 7 . Each component shown in FIG. 7 may be implemented using hardware, software, or a combination thereof. For example, the electronic device 700 may be a single server (or other device with computing processing capabilities), a combination of multiple servers, a cluster of a large number of servers, etc., and may be both a physical device and a virtual device.

On the other hand, the present invention also provides a computer program product, the computer program product includes a computer program, the computer program can be stored on a non-transitory computer-readable storage medium, and when the computer program is executed by a processor, the computer can execute the output power control method of the hydrogen fuel cell system provided by the above methods, including: step 1: obtaining the target output power of the hydrogen fuel cell system; step 2: confirming the air compressor control signal of the cathode circuit of the fuel cell according to the target output power, and adjusting the cathode circuit based on the air compressor control signal, so that the output power of the hydrogen fuel cell tends to the target output power. Wherein, the air compressor control signal and the target output power meet the preset output function.

On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is implemented to execute the output power control method of the hydrogen fuel cell system provided by the above-mentioned methods, including: step one: obtaining the target output power of the hydrogen fuel cell system; step two: confirming the air compressor control signal of the cathode circuit of the fuel cell according to the target output power, and adjusting the cathode circuit based on the air compressor control signal, so that the output power of the hydrogen fuel cell The air compressor control signal and the target output power are in accordance with a preset output function. For example, the computer-readable storage medium can be implemented as the memory 720 in the electronic device 700 in FIG. 7 .

The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM/RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

A method for controlling output power of a hydrogen fuel cell system, comprising:

Obtaining a target output power of a hydrogen fuel cell system;

confirming an air compressor control signal of a cathode circuit of the fuel cell according to the target output power, and adjusting the cathode circuit based on the air compressor control signal so that the output power of the hydrogen fuel cell approaches the target output power;

Wherein, the air compressor control signal and the target output power conform to a preset output function;

The control method further comprises:

Obtaining deviation information between the first-class variable and the second-class variable output by the hydrogen fuel cell and a preset characteristic curve;

The electrical circuit of the hydrogen fuel cell system is adjusted according to the deviation information so that the first type of variables and the second type of variables tend to a preset characteristic curve.
The output power control method of a hydrogen fuel cell system according to claim 1, characterized in that the control method further comprises:

The back pressure valve and/or the exhaust valve are adjusted according to the changing state of the hydrogen fuel cell system so that the system state meets the preset state requirements.
The output power control method of a hydrogen fuel cell system according to claim 1, characterized in that the first type of variable is the output current or output current density of the hydrogen fuel cell system, or a variable calculated therefrom;

The second type of variables are the output voltage, output power or internal resistance compensated output voltage of the hydrogen fuel cell system, or variables calculated therefrom.
The output power control method of a hydrogen fuel cell system according to claim 1 is characterized in that the output function is a monotonic function.
According to the output power control method of a hydrogen fuel cell system according to claim 1, it is characterized in that the air compressor control signal is the air compressor torque, speed, current, power or PWM duty cycle, or a variable calculated therefrom.
An output power control system of a hydrogen fuel cell system, characterized by comprising:

A target acquisition unit, used to acquire a target output power of the hydrogen fuel cell system;

An output control unit is used to confirm the air compressor control signal of the cathode circuit of the fuel cell according to the target output power, and adjust the cathode circuit based on the air compressor control signal so that the output power of the hydrogen fuel cell tends to the target output power; wherein the air compressor control signal and the target output power conform to a preset output function.
An electronic device comprises a memory, a processor and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the output power control method of a hydrogen fuel cell system as claimed in any one of claims 1 to 6 is implemented.
A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that when the computer program is executed by a processor, an output power control method of a hydrogen fuel cell system as described in any one of claims 1 to 7 is implemented.