A method, apparatus, equipment, and medium for determining the efficiency of a fuel cell system.

Abstract

This invention discloses a method, apparatus, device, and medium for determining the efficiency of a fuel cell system. The method includes: calculating hydrogen consumption based on the hydrogen injection valve duty cycle and hydrogen pressure; and calculating the efficiency of the fuel cell system based on the hydrogen consumption. The hydrogen consumption includes instantaneous hydrogen consumption and / or average hydrogen consumption over a set time period. Correspondingly, the efficiency includes instantaneous efficiency and / or average efficiency. This technical solution first calculates instantaneous hydrogen consumption and / or average hydrogen consumption over a set time period using the hydrogen injection valve duty cycle and hydrogen pressure, and then calculates the instantaneous efficiency and / or average efficiency of the fuel cell system based on the hydrogen consumption. This achieves real-time and accurate determination of the fuel cell system efficiency, facilitating research by developers and efficient use by users, thereby promoting the continuous development of fuel cell technology.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of new energy technology, and in particular to a method, apparatus, equipment and medium for determining the efficiency of a fuel cell system. Background Technology

[0002] A fuel cell system is a power generation system centered around a fuel cell. As a novel energy conversion technology, fuel cells offer advantages such as high efficiency, environmental friendliness, and safety compared to traditional combustion-based power generation methods, thus attracting significant attention. Fuel cell system efficiency, a crucial parameter reflecting the performance of a fuel cell system, is of great importance to researchers and users in the field, particularly in terms of real-time calculation accuracy. However, currently, accurate calculations of instantaneous efficiency or efficiency under specific operating conditions are not possible, resulting in poor real-time performance in fuel cell system efficiency calculations. Summary of the Invention

[0003] This invention provides a method, apparatus, device, and medium for determining the efficiency of a fuel cell system, enabling real-time and accurate determination of the fuel cell system's efficiency.

[0004] In a first aspect, embodiments of the present invention provide a method for determining the efficiency of a fuel cell system, comprising:

[0005] Hydrogen consumption is calculated based on the hydrogen injection valve duty cycle and hydrogen pressure.

[0006] Calculate the efficiency of a fuel cell system based on hydrogen consumption;

[0007] Hydrogen consumption includes instantaneous hydrogen consumption and / or average hydrogen consumption over a set period; correspondingly, efficiency includes instantaneous efficiency and / or average efficiency.

[0008] In a second aspect, embodiments of the present invention provide an efficiency determination apparatus for a fuel cell system, comprising:

[0009] The hydrogen consumption calculation module is used to calculate hydrogen consumption based on the hydrogen injection valve duty cycle and hydrogen pressure.

[0010] The efficiency calculation module is used to calculate the efficiency of the fuel cell system based on hydrogen consumption.

[0011] Hydrogen consumption includes instantaneous hydrogen consumption and / or average hydrogen consumption over a set period; correspondingly, efficiency includes instantaneous efficiency and / or average efficiency.

[0012] Thirdly, embodiments of the present invention provide an electronic device, including:

[0013] One or more processors; and

[0014] A memory that is communicatively connected to at least one processor; wherein,

[0015] The memory stores a computer program that can be executed by at least one processor, such that the at least one processor can implement the efficiency determination method for the fuel cell system as described in the first aspect.

[0016] Fourthly, embodiments of the present invention also provide a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the efficiency determination method for a fuel cell system as described in the first aspect.

[0017] This invention provides a method, apparatus, device, and medium for determining the efficiency of a fuel cell system. First, hydrogen consumption is calculated based on the hydrogen injection valve duty cycle and hydrogen pressure. Finally, the efficiency of the fuel cell system is calculated based on the hydrogen consumption. The hydrogen consumption includes instantaneous hydrogen consumption and / or average hydrogen consumption over a set time period. Correspondingly, the efficiency includes instantaneous efficiency and / or average efficiency. This technical solution, by calculating instantaneous hydrogen consumption and / or average hydrogen consumption over a set time period using the hydrogen injection valve duty cycle and hydrogen pressure, and then calculating the instantaneous efficiency and / or average efficiency of the fuel cell system based on the hydrogen consumption, achieves real-time and accurate determination of the fuel cell system's efficiency. This facilitates research on fuel cells by developers and enables users to use fuel cells efficiently, thereby promoting the continuous development of fuel cell technology.

[0018] It should be understood that the description in this section is not intended to identify key or important features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0019] The above and other features, advantages, and aspects of the embodiments of this disclosure will become more apparent from the accompanying drawings and the following detailed description. Throughout the drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the originals and elements are not necessarily drawn to scale.

[0020] Figure 1 This is a flowchart of a method for determining the efficiency of a fuel cell system provided in Embodiment 1 of the present invention;

[0021] Figure 2 This is a flowchart of a method for determining the efficiency of a fuel cell system provided in Embodiment 2 of the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of an efficiency determination device for a fuel cell system provided in Embodiment 3 of the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of an electronic device provided in Embodiment 4 of the present invention. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, the embodiments and features described herein can be combined with each other unless otherwise specified. It should also be noted that, for ease of description, only the parts relevant to the present invention are shown in the drawings, not the entire structure.

[0025] Before discussing the exemplary embodiments in more detail, it should be noted that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although the flowcharts describe the steps as sequential processes, many of these steps can be performed in parallel, concurrently, or simultaneously. Furthermore, the order of the steps can be rearranged. The process can be terminated when its operation is complete, but may also have additional steps not included in the figures. The process can correspond to a method, function, procedure, subroutine, subroutine, etc.

[0026] It should be noted that the concepts of "first" and "second" mentioned in the embodiments of the present invention are only used to distinguish different devices, modules, units or other objects, and are not used to limit the order of functions performed by these devices, modules, units or other objects or their interdependencies.

[0027] Example 1

[0028] Figure 1 This is a flowchart illustrating a method for determining the efficiency of a fuel cell system according to Embodiment 1 of the present invention. This embodiment is applicable to determining the efficiency of a fuel cell system, for example, calculating the efficiency of a fuel cell system for devices using fuel cells such as stationary generators, vehicles, spacecraft, and submarines. Specifically, this method for determining the efficiency of a fuel cell system can be executed by a fuel cell system efficiency determination device, which can be implemented through software and / or hardware and integrated into an electronic device. Further, the electronic device includes, but is not limited to, electronic devices such as computers, mobile terminals, or controllers.

[0029] like Figure 1 As shown, the method specifically includes the following steps:

[0030] S110. Calculate hydrogen consumption based on the hydrogen injection valve duty cycle and hydrogen pressure.

[0031] In this embodiment, the hydrogen injection valve can be understood as a hydrogen injection valve used to control the hydrogen flow rate of the hydrogen fuel cell. The hydrogen fuel cell can be understood as a power generation device that converts the chemical energy of hydrogen fuel into electrical energy. The hydrogen injection valve duty cycle can be understood as the proportion of the time the hydrogen injection valve is open within a set time period; a higher duty cycle may result in higher hydrogen consumption. Hydrogen consumption can be understood as the amount of hydrogen consumed by the fuel cell system during operation, which can include instantaneous hydrogen consumption and / or average hydrogen consumption over a set period. Instantaneous hydrogen consumption can be understood as the amount of hydrogen consumed by the fuel cell system in each unit of time (e.g., 1 second) during operation. Average hydrogen consumption can be understood as the amount of hydrogen consumed by the fuel cell system during a set period during operation. Hydrogen pressure can be understood as the pressure at which hydrogen is normally supplied to the fuel cell. It is a crucial factor in the operation of the fuel cell system; the higher the hydrogen pressure, the greater the hydrogen consumption may be. Hydrogen pressure can be, for example, medium-pressure hydrogen (e.g., 60-100 kPa), or in some embodiments, low-pressure hydrogen (e.g., 30 kPa) or high-pressure hydrogen (e.g., 150-300 kPa). The fuel cell system can be understood as the system that constitutes the fuel cell.

[0032] S120. Calculate the efficiency of the fuel cell system based on hydrogen consumption.

[0033] In this embodiment, the fuel cell system can be understood as a power generation system centered on a fuel cell, comprising a fuel supply and circulation system, an oxidant supply system, a water / heat management system, and a control system. A fuel cell can be understood as a power generation device that converts the chemical energy of fuel (such as hydrogen) into electrical energy. It can consist of four parts: an anode, a cathode, an electrolyte, and an external circuit. Fuel cells can be, for example, proton exchange membrane fuel cells, solid oxide fuel cells, alkaline fuel cells, or hydrogen fuel cells. The efficiency of a fuel cell system can be understood as the level (efficiency) at which the chemical energy of fuel (such as hydrogen) is converted into electrical energy during power generation. It is an important performance parameter of the fuel cell system and can include instantaneous efficiency and / or average efficiency. Instantaneous efficiency can be understood as the level (efficiency) at which the chemical energy of fuel (such as hydrogen) is converted into electrical energy per unit time (such as 1 second) during power generation. Average efficiency can be understood as the level (efficiency) at which the chemical energy of fuel (such as hydrogen) is converted into electrical energy within a set time period during power generation. The set time period can be set according to actual conditions, for example, 10 minutes.

[0034] Specifically, the efficiency of a fuel cell system is calculated based on hydrogen consumption. When calculating the instantaneous efficiency of a fuel cell system, it can be calculated using instantaneous hydrogen consumption; when calculating the average efficiency of a fuel cell system, it can be calculated using average hydrogen consumption.

[0035] For example, the fuel cell system of the present invention can employ a proton exchange membrane fuel cell. Its working principle involves introducing humidified high-purity hydrogen gas into the anode and humidified air or oxygen gas into the cathode. The high-purity hydrogen gas generates hydrogen ions and electrons under the action of the anode catalyst. The hydrogen ions generated at the anode pass through the proton exchange membrane to the cathode as hydrated hydrogen ions. Oxygen combines with the hydrated hydrogen ions under the action of the cathode catalyst to generate water and release heat. Electrons flow from the anode to the cathode through the external circuit, thus generating an electric current. It should be noted that the proton exchange membrane fuel cell is merely one example of the present invention and does not limit the scope of the fuel cell.

[0036] This invention provides a method for determining the efficiency of a fuel cell system. First, hydrogen consumption is calculated based on the hydrogen injection valve duty cycle and hydrogen pressure. Finally, the efficiency of the fuel cell system is calculated based on the hydrogen consumption. The hydrogen consumption includes instantaneous hydrogen consumption and / or average hydrogen consumption over a set time period. Correspondingly, the efficiency includes instantaneous efficiency and / or average efficiency. This technical solution, by first calculating instantaneous hydrogen consumption and / or average hydrogen consumption over a set time period using the hydrogen injection valve duty cycle and hydrogen pressure, and then calculating the instantaneous efficiency and / or average efficiency of the fuel cell system based on the hydrogen consumption, achieves real-time and accurate determination of the fuel cell system efficiency. This facilitates research on fuel cells by developers and enables users to use fuel cells efficiently, thereby promoting the continuous development of fuel cell technology.

[0037] Example 2

[0038] Figure 2 This is a flowchart illustrating a method for determining the efficiency of a fuel cell system according to Embodiment 2 of the present invention. This embodiment is a refinement of the above embodiments, providing a detailed description of the method for determining the efficiency of a fuel cell system. It should be noted that technical details not described in detail in this embodiment can be found in any of the above embodiments.

[0039] Specifically, such as Figure 2 As shown, the method specifically includes the following steps:

[0040] S210. Determine the hydrogen pressure and the duty cycle of the hydrogen injection valve.

[0041] Specifically, before calculating hydrogen consumption based on the hydrogen injection valve duty cycle and hydrogen pressure, the hydrogen pressure and hydrogen injection valve duty cycle can be determined first to facilitate subsequent calculations. The hydrogen pressure can be determined by acquiring the voltage value of the hydrogen pressure at the current moment through a hydrogen pressure sensor and then analyzing the voltage value through software. The hydrogen injection valve duty cycle can be determined based on the hydrogen injection valve signal fed back from the fuel cell system.

[0042] In this embodiment, the hydrogen pressure sensor can be understood as a device that collects the voltage value of hydrogen pressure, such as a resistive semiconductor sensor, a thermoelectric sensor, or a fiber optic sensor. The software can be controller software, and the formula parsed by the software can be: in, and This is the voltage value of the hydrogen pressure at the current moment, collected by the hydrogen pressure sensor, and the unit can be mV.

[0043] S220, calculate hydrogen consumption based on the hydrogen injection valve duty cycle and hydrogen pressure.

[0044] Specifically, hydrogen consumption is calculated based on the hydrogen injection valve duty cycle and hydrogen pressure. This hydrogen consumption can include instantaneous hydrogen consumption and / or average hydrogen consumption over a set time period. The instantaneous hydrogen consumption can be obtained by substituting the hydrogen injection valve duty cycle and hydrogen pressure into the following formula:

[0045]

[0046] in, This refers to the instantaneous hydrogen consumption. The hydrogen pressure, This refers to the duty cycle of the hydrogen injection valve. The unit can be g / s. The unit can be kPa. The unit can be %.

[0047] Specifically, hydrogen consumption can include average hydrogen consumption, calculated based on the hydrogen injection valve duty cycle and hydrogen pressure, or instantaneous hydrogen consumption for each time unit within a set time period, calculated based on the hydrogen injection valve duty cycle and hydrogen pressure. The instantaneous hydrogen consumption for each time unit is integrated over time to obtain the total hydrogen consumption within the set time period. The total hydrogen consumption is then divided by the duration of the set time period to obtain the average hydrogen consumption. The time unit can be seconds (s).

[0048] For example, hydrogen consumption can be calculated based on the hydrogen injection valve duty cycle and hydrogen pressure. The instantaneous hydrogen consumption can be obtained first, and then the average hydrogen consumption over a set period can be obtained based on the instantaneous hydrogen consumption.

[0049] S230, Calculate the efficiency of the fuel cell system based on hydrogen consumption.

[0050] Specifically, the efficiency of the fuel cell system is calculated based on hydrogen consumption, where efficiency includes instantaneous efficiency and / or average efficiency. The instantaneous efficiency can be obtained by substituting the hydrogen consumption into the following formula: Where, η ins Where W is the instantaneous efficiency and W is the current system power. H represents instantaneous hydrogen consumption. lowCVHydrogen has a low calorific value; the average efficiency can also be obtained by substituting the hydrogen consumption into the following formula: Where, η ave The average efficiency is given by W, where W is the current system power. For average hydrogen consumption, H lowCV Because hydrogen has a low calorific value, η ins and η ave The unit for can be %, and the unit for W can be kw. The unit can be g / s, H lowCV It can be a fixed value of 120 KJ / g.

[0051] Optionally, after calculating the efficiency of the fuel cell system based on hydrogen consumption, the efficiency is displayed according to a switch variable; where the switch variable is the first value, the instantaneous efficiency is displayed; and the switch variable is the second value, the average efficiency is displayed.

[0052] In one embodiment, the switching variable can be implemented using software with switching functionality. This software can be, for example, host computer software. For instance, when the switching variable is a first value (e.g., 0), the system efficiency is output and displayed as instantaneous efficiency; when the switching variable is a second value (e.g., 1), the system efficiency is output and displayed as average efficiency. The display of the instantaneous efficiency and / or average efficiency values ​​can be achieved by the software calculating and outputting digital signals, and the specific physical values ​​can be displayed by the host computer software.

[0053] For example, when the switch variable is the second value (e.g., 1), the system efficiency is output and displayed as the average efficiency. The timer starts counting, and the counting time can be T, with the unit being seconds. Simultaneously, the instantaneous hydrogen consumption for each time unit is calculated, and this instantaneous hydrogen consumption is integrated over time to obtain the total hydrogen consumption within the set time period. The total hydrogen consumption is then divided by the duration of the set time period to obtain the average hydrogen consumption. Finally, the average efficiency is calculated based on the average hydrogen consumption. The stopping time of T is determined by the user, and this time length can be denoted as T. stop When T≥T stop When the timer is reset, the integral of the instantaneous hydrogen consumption corresponding to each time unit in the time dimension is also reset to 0, and then the output is based on the instantaneous efficiency.

[0054] The second embodiment of this invention provides a method for determining the efficiency of a fuel cell system, which is a refinement of the above embodiments. First, by determining the hydrogen pressure and the hydrogen injection valve duty cycle, subsequent calculations are facilitated. Then, based on the hydrogen injection valve duty cycle and hydrogen pressure, the instantaneous hydrogen consumption and / or the average hydrogen consumption over a set period are calculated. By calculating the instantaneous hydrogen consumption and integrating the instantaneous hydrogen consumption to calculate the average hydrogen consumption over the set period, the calculation of the fuel cell system efficiency becomes more accurate and real-time. Finally, based on the hydrogen consumption, the instantaneous efficiency and / or average efficiency of the fuel cell system are calculated, achieving real-time and accurate determination of the fuel cell system efficiency. This facilitates research on fuel cells by developers and enables users to use fuel cells efficiently, thereby promoting the continuous development of fuel cell technology.

[0055] Example 3

[0056] Figure 3 This is a schematic diagram of a fuel cell system efficiency determination device provided in Embodiment 3 of the present invention. This device can execute the fuel cell system efficiency determination method provided in this embodiment of the present invention. The fuel cell system efficiency determination device provided in this embodiment includes:

[0057] The hydrogen consumption calculation module 310 is used to calculate hydrogen consumption based on the hydrogen injection valve duty cycle and hydrogen pressure.

[0058] Efficiency calculation module 320 is used to calculate the efficiency of the fuel cell system based on hydrogen consumption.

[0059] The third embodiment of this invention provides an efficiency determination device for a fuel cell system. First, it calculates hydrogen consumption based on the hydrogen injection valve duty cycle and hydrogen pressure. Finally, it calculates the efficiency of the fuel cell system based on the hydrogen consumption. The hydrogen consumption includes instantaneous hydrogen consumption and / or average hydrogen consumption over a set time period. Correspondingly, the efficiency includes instantaneous efficiency and / or average efficiency. This technical solution first calculates instantaneous hydrogen consumption and / or average hydrogen consumption over a set time period using the hydrogen injection valve duty cycle and hydrogen pressure, and then calculates the instantaneous efficiency and / or average efficiency of the fuel cell system based on the hydrogen consumption. This achieves real-time and accurate determination of the fuel cell system efficiency, facilitating research by developers and efficient use by users, thereby promoting the continuous development of fuel cell technology.

[0060] Optionally, before calculating hydrogen consumption based on the hydrogen injection valve duty cycle and hydrogen pressure, the device further includes:

[0061] The hydrogen pressure determination module is used to acquire the voltage value of the hydrogen pressure at the current moment through the hydrogen pressure sensor, and to obtain the hydrogen pressure by analyzing the voltage value through software.

[0062] The hydrogen injection valve duty cycle determination module is used to determine the hydrogen injection valve duty cycle based on the hydrogen injection valve signal fed back from the fuel cell system.

[0063] Optionally, the hydrogen consumption calculation module 310 includes:

[0064] The instantaneous hydrogen consumption calculation unit is used to substitute the hydrogen injection valve duty cycle and hydrogen pressure into the following formula to obtain the instantaneous hydrogen consumption:

[0065]

[0066] in, This refers to the instantaneous hydrogen consumption. For hydrogen pressure, This refers to the duty cycle of the hydrogen injection valve.

[0067] The average hydrogen consumption calculation unit is used to calculate the instantaneous hydrogen consumption for each time unit in a set period based on the hydrogen injection valve duty cycle and hydrogen pressure.

[0068] Integrate the instantaneous hydrogen consumption corresponding to each time unit along the time dimension to obtain the total hydrogen consumption within the set time period.

[0069] The average hydrogen consumption is obtained by dividing the total hydrogen consumption by the duration of the set period.

[0070] Optionally, the efficiency calculation module 320 includes:

[0071] The instantaneous efficiency calculation unit is used to substitute the hydrogen consumption into the following formula to obtain the instantaneous efficiency:

[0072]

[0073] Where, η ins Where W is the instantaneous efficiency and W is the current system power. H represents instantaneous hydrogen consumption. lowCV It has a low calorific value, which is due to hydrogen.

[0074] The average efficiency calculation unit is used to substitute the hydrogen consumption into the following formula to obtain the average efficiency:

[0075]

[0076] Where, η ave The average efficiency is given by W, where W is the current system power. For average hydrogen consumption, H lowCV It has a low calorific value, which is due to hydrogen.

[0077] Optionally, after calculating the efficiency of the fuel cell system based on hydrogen consumption, the device further includes:

[0078] The display module is used to display efficiency based on the switch variable; where the switch variable is the first value, the instantaneous efficiency is displayed; and the switch variable is the second value, the average efficiency is displayed.

[0079] The fuel cell system efficiency determination device provided in Embodiment 3 of the present invention can be used to execute the fuel cell system efficiency determination method provided in any of the above embodiments, and has corresponding functions and beneficial effects.

[0080] Example 4

[0081] Figure 4 A schematic diagram of an electronic device 10, which can be used to implement embodiments of the present invention, is shown. The electronic device 10 is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device 10 can also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, user equipment, wearable devices (such as helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the invention described and / or claimed herein.

[0082] like Figure 4 As shown, the electronic device 10 includes at least one processor 11 and a memory, such as a read-only memory (ROM) 12 or a random access memory (RAM) 13, communicatively connected to the at least one processor 11. The memory stores computer programs executable by the at least one processor. The processor 11 can perform various appropriate actions and processes based on the computer program stored in the ROM 12 or loaded from storage unit 18 into the RAM 13. The RAM 13 may also store various programs and data required for the operation of the electronic device 10. The processor 11, ROM 12, and RAM 13 are interconnected via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0083] Multiple components in electronic device 10 are connected to I / O interface 15, including: input unit 16, such as keyboard, mouse, etc.; output unit 17, such as various types of displays, speakers, etc.; storage unit 18, such as disk, optical disk, etc.; and communication unit 19, such as network card, modem, wireless transceiver, etc. Communication unit 19 allows electronic device 10 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks and wireless networks.

[0084] Processor 11 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. Processor 11 performs the various methods and processes described above, such as the efficiency determination method for a fuel cell system.

[0085] In some embodiments, the efficiency determination method for a fuel cell system may be implemented as a computer program tangibly contained in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program may be loaded into and / or installed on electronic device 10 via ROM 12 and / or communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the method described above may be performed. Alternatively, in other embodiments, processor 11 may be configured to perform the efficiency determination method for a fuel cell system by any other suitable means (e.g., by means of firmware).

[0086] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-a-chip (SoCs), payload-programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0087] Computer programs used to implement the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when executed by the processor, the computer programs cause the functions / operations specified in the flowcharts and / or block diagrams to be performed. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0088] In the context of this invention, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination thereof. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0089] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device 10, which includes: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the electronic device 10. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0090] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or computing systems that include middleware components (e.g., application servers), or computing systems that include frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., communication networks). Examples of communication networks include local area networks (LANs), wide area networks (WANs), blockchain networks, and the Internet.

[0091] A computing system can include clients and servers. Clients and servers are generally located far apart and typically interact through communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a hosting product within the cloud computing service system to address the shortcomings of traditional physical hosts and VPS services, such as high management difficulty and weak business scalability.

[0092] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0093] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A method for determining the efficiency of a fuel cell system, characterized in that, include: Hydrogen consumption is calculated based on the hydrogen injection valve duty cycle and hydrogen pressure. The efficiency of the fuel cell system is calculated based on the hydrogen consumption. Wherein, the hydrogen consumption includes instantaneous hydrogen consumption and / or average hydrogen consumption over a set period; correspondingly, the efficiency includes instantaneous efficiency and / or average efficiency; The calculation process for the instantaneous hydrogen consumption includes: The voltage value of the hydrogen pressure at the current moment is collected by a hydrogen pressure sensor, and the hydrogen pressure is obtained by analyzing the voltage value through software. The duty cycle of the hydrogen injection valve is determined based on the hydrogen injection valve signal fed back by the fuel cell system. Substituting the duty cycle of the hydrogen injection valve and the hydrogen pressure into the following formula, the instantaneous hydrogen consumption is obtained: , in, The instantaneous hydrogen consumption is... The hydrogen pressure, The duty cycle of the hydrogen injection valve; The calculation process for the average hydrogen consumption includes: The instantaneous hydrogen consumption for each time unit in the set period is calculated based on the hydrogen injection valve duty cycle and hydrogen pressure. The instantaneous hydrogen consumption corresponding to each time unit is integrated along the time dimension to obtain the total hydrogen consumption within the set time period. The average hydrogen consumption is obtained by dividing the total hydrogen consumption by the duration of the set time period.

2. The method according to claim 1, characterized in that, The calculation of the fuel cell system efficiency based on the hydrogen consumption includes: Substituting the hydrogen consumption into the following formula, we obtain the instantaneous efficiency: ； in, The instantaneous efficiency is... The current system power, This refers to the instantaneous hydrogen consumption. It has a low calorific value, which is due to hydrogen.

3. The method according to claim 1, characterized in that, The calculation of the fuel cell system efficiency based on the hydrogen consumption includes: Substituting the hydrogen consumption into the following formula, we obtain the average efficiency: ； in, The average efficiency is mentioned above. The current system power, This represents the average hydrogen consumption. It has a low calorific value, which is due to hydrogen.

4. The method according to claim 1, characterized in that, After calculating the efficiency of the fuel cell system based on the hydrogen consumption, the process also includes: The efficiency is displayed based on the switch variable; whereby... If the switch variable is set to the first value, then the instantaneous efficiency is displayed. If the switch variable is set to the second value, then the average efficiency is displayed.

5. An efficiency determination device for a fuel cell system, characterized in that, include: The hydrogen consumption calculation module is used to calculate hydrogen consumption based on the hydrogen injection valve duty cycle and hydrogen pressure. An efficiency calculation module is used to calculate the efficiency of the fuel cell system based on the hydrogen consumption. Wherein, the hydrogen consumption includes instantaneous hydrogen consumption and / or average hydrogen consumption over a set period; correspondingly, the efficiency includes instantaneous efficiency and / or average efficiency; The calculation process for the instantaneous hydrogen consumption includes: The voltage value of the hydrogen pressure at the current moment is collected by a hydrogen pressure sensor, and the hydrogen pressure is obtained by analyzing the voltage value through software. The duty cycle of the hydrogen injection valve is determined based on the hydrogen injection valve signal fed back by the fuel cell system. Substituting the duty cycle of the hydrogen injection valve and the hydrogen pressure into the following formula, the instantaneous hydrogen consumption is obtained: , in, The instantaneous hydrogen consumption is... The hydrogen pressure, The duty cycle of the hydrogen injection valve; The calculation process for the average hydrogen consumption includes: The instantaneous hydrogen consumption for each time unit in the set period is calculated based on the hydrogen injection valve duty cycle and hydrogen pressure. The instantaneous hydrogen consumption corresponding to each time unit is integrated along the time dimension to obtain the total hydrogen consumption within the set time period. The average hydrogen consumption is obtained by dividing the total hydrogen consumption by the duration of the set time period.

6. An electronic device, characterized in that, include: At least one processor; as well as A memory communicatively connected to the at least one processor; wherein, The memory stores a computer program that can be executed by the at least one processor to enable the at least one processor to perform the efficiency determination method for a fuel cell system as described in any one of claims 1-4.

7. A computer-readable storage medium having a computer program stored thereon, characterized in that, When executed by a processor, this program implements the efficiency determination method for a fuel cell system as described in any one of claims 1-4.

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