Accessory power consumption distribution optimization method and related equipment

Abstract

The invention discloses an accessory power consumption distribution optimization method and related equipment, and relates to the technical field of fuel cell electric vehicles, and the method comprises the steps: determining the accessory consumption power of a fuel cell accessory according to the power demand of a whole vehicle; calculating first vehicle energy consumption under the condition that the fuel cell stack provides accessory consumption power; second vehicle energy consumption under the condition that the energy storage device provides accessory consumption power is calculated; based on the comparison result of the first whole vehicle energy consumption and the second whole vehicle energy consumption, it is determined that accessory consumption power is provided by the energy storage device or the fuel cell stack. Through accurate energy consumption evaluation, a flexible energy consumption optimization strategy and an intelligent decision-making mechanism, optimization of power consumption distribution of the fuel cell electric vehicle is realized, the energy efficiency of the whole vehicle is improved, the endurance mileage of the vehicle can be prolonged to a certain extent, and the user experience is improved.

Description

Technical Field

[0001] The present application relates to the technical field of fuel cell electric vehicles, and more specifically, to an accessory power consumption allocation optimization method and related equipment. Background Art

[0002] With the rapid development of new energy vehicle technology, especially the popularity of fuel cell electric vehicles (FCEV), the optimization method of accessory power consumption allocation has become one of the key technologies to improve the energy efficiency and driving range of the whole vehicle. In FCEV, in addition to the fuel cell stack as the main power source, it is also equipped with many auxiliary accessories, such as cooling system, hydrogen circulation pump, air compressor, etc. These accessories consume a lot of electrical energy or hydrogen energy during the operation of the vehicle, which has an important impact on the energy consumption performance of the whole vehicle.

[0003] However, existing methods for allocating power consumption to accessories often use fixed or simplified allocation strategies, which fail to fully consider the dynamic changes in the vehicle's power demand under different operating conditions, as well as the power coupling relationship between the fuel cell stack and the energy storage device (such as the battery pack). This simplified power consumption allocation method can easily lead to inefficient energy utilization, especially under complex and changeable driving conditions. It cannot effectively adapt to and meet the vehicle's dynamic power demand, thereby affecting the energy efficiency performance and cruising range of the entire vehicle. In other words, there are technical problems in the relevant technology of high energy consumption and short cruising range of the entire vehicle. Summary of the invention

[0004] A series of simplified concepts are introduced in the summary of the invention, which will be further described in detail in the detailed description. The summary of the invention of this application does not mean to attempt to define the key features and essential technical features of the technical solution claimed for protection, nor does it mean to attempt to determine the scope of protection of the technical solution claimed for protection.

[0005] The accessory power consumption allocation optimization method and related devices provided in this application can optimize the power consumption allocation of fuel cell electric vehicles through accurate energy consumption evaluation, flexible energy consumption optimization strategies and intelligent decision-making mechanisms, improve the energy efficiency of the entire vehicle, and can also extend the vehicle's cruising range to a certain extent and improve user experience.

[0006] In a first aspect, the present application provides an accessory power consumption allocation optimization method, which is applied to fuel cell electric vehicles, including: determining the accessory power consumption of the fuel cell accessories according to the power demand of the whole vehicle; calculating the first whole vehicle energy consumption when the fuel cell stack provides the accessory power consumption; calculating the second whole vehicle energy consumption when the energy storage device provides the accessory power consumption; based on the comparison result of the first whole vehicle energy consumption and the second whole vehicle energy consumption, determining whether the accessory power consumption is provided by the energy storage device or the fuel cell stack.

[0007] In a feasible implementation manner, determining the accessory power consumption of the fuel cell accessory according to the power demand of the entire vehicle includes: detecting the working state of the fuel cell system, wherein the working state includes a startup state, an operating state, and a shutdown state; when the working state is the operating state, determining the accessory power consumption of the fuel cell accessory according to the power demand of the entire vehicle.

[0008] In a feasible implementation, determining the accessory power consumption of the fuel cell accessory based on the power demand of the entire vehicle includes: determining a first output power of the fuel cell system and a second output power of the energy storage device based on the power demand of the entire vehicle and a preset power output ratio; determining the accessory power consumption of the fuel cell accessory based on the first output power.

[0009] In a feasible implementation, the accessory power consumption allocation optimization method further includes: performing vehicle speed time series prediction based on vehicle speed history records to obtain a target predicted vehicle speed; and determining the preset power output ratio based on the target predicted vehicle speed and the current temperature.

[0010] In a feasible implementation, the calculation of the first whole vehicle energy consumption when the fuel cell stack provides the accessory power consumption includes: calculating the first stack energy consumption of the fuel cell stack based on the first hydrogen consumption, wherein the first hydrogen consumption is calculated based on the first output power and the accessory power consumption; calculating the first device energy consumption of the energy storage device based on the second output power; and calculating the first whole vehicle energy consumption based on the first stack energy consumption and the first device energy consumption.

[0011] In a feasible implementation, the calculation of the second whole vehicle energy consumption when the energy storage device provides the power consumed by the accessory includes: calculating the second stack energy consumption of the fuel cell stack based on the second hydrogen consumption, wherein the second hydrogen consumption is calculated according to the first output power; calculating the second device energy consumption of the energy storage device based on the second output power and the accessory power consumption; and calculating the second whole vehicle energy consumption based on the second stack energy consumption and the second device energy consumption.

[0012] In a feasible implementation, the power consumption of the accessory is determined to be provided by the energy storage device or the fuel cell stack based on the comparison result of the first whole vehicle energy consumption and the second whole vehicle energy consumption, including: when the first whole vehicle energy consumption is greater than the second whole vehicle energy consumption and the state of charge of the energy storage device is greater than a preset ratio, the power consumption of the accessory is provided by the energy storage device; otherwise, the power consumption of the accessory is provided by the fuel cell stack.

[0013] In the second aspect, the present application also provides an accessory power consumption allocation optimization device, including: a power determination unit, used to determine the accessory power consumption of the fuel cell accessory according to the power demand of the whole vehicle; an energy consumption determination unit, used to calculate the first whole vehicle energy consumption when the fuel cell stack provides the accessory power consumption; the energy consumption determination unit is also used to calculate the second whole vehicle energy consumption when the energy storage device provides the accessory power consumption; an energy supply determination unit, used to determine whether the accessory power consumption is provided by the energy storage device or the fuel cell stack based on the comparison result of the first whole vehicle energy consumption and the second whole vehicle energy consumption.

[0014] In a third aspect, the present application further provides an electronic device, comprising: a memory and a processor, wherein the processor is configured to implement the steps of the accessory power consumption allocation optimization method described in the first aspect when executing a computer program stored in the memory.

[0015] In a fourth aspect, the present application further provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the steps of the accessory power consumption allocation optimization method described in the first aspect.

[0016] In a fifth aspect, the present application also provides a computer program product, including a computer program or computer executable instructions, which, when executed by a processor, implements the accessory power consumption allocation optimization method provided in an embodiment of the present application.

[0017] In summary, this application determines which system provides the power consumption of the accessories by comparing the energy consumption of the first vehicle and the energy consumption of the second vehicle, and automatically selects the solution with lower energy consumption based on the intelligent decision-making mechanism of actual data, so as to maximize the energy efficiency of the whole vehicle. In summary, the accessory power consumption allocation optimization method provided by this application optimizes the power consumption allocation of fuel cell electric vehicles through accurate energy consumption evaluation, flexible energy consumption optimization strategy and intelligent decision-making mechanism, improves the energy efficiency of the whole vehicle, and can also extend the vehicle's cruising range to a certain extent and improve user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present specification. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0019] Figure 1 A flowchart of an accessory power consumption allocation optimization method provided in an embodiment of the present application;

[0020] Figure 2 A schematic diagram of the structure of an accessory power consumption allocation optimization device provided in an embodiment of the present application;

[0021] Figure 3 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0022] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "is" and "has" and any variations thereof involved in the present application are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0023] The term "module" or "unit" in this application refers to a computer program or a part of a computer program that has a predetermined function and works together with other related parts to achieve a predetermined goal, and can be implemented in whole or in part by using software, hardware (such as processing circuits or memories) or a combination thereof. Similarly, a processor (or multiple processors or memories) can be used to implement one or more modules or units. In addition, each module or unit can be part of an overall module or unit that includes the function of the module or unit.

[0024] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. In the following description, it is related to "some embodiments", which describes a subset of all possible embodiments, but it can be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments, and can be combined with each other without conflict.

[0025] See also Figure 1 , Figure 1 1 is a flow chart of an accessory power consumption allocation optimization method provided in an embodiment of the present application. The method may specifically include the following steps 101 to 104:

[0026] Step 101, determining the accessory power consumption of the fuel cell accessories according to the power demand of the entire vehicle;

[0027] Specifically, the vehicle power demand refers to the total power required by a fuel cell electric vehicle under a specific operating state, including the power demand for driving the vehicle, the operation demand of various auxiliary systems of the vehicle, and the power supply demand of the electronic equipment inside the vehicle; the vehicle power demand changes dynamically, and it depends on the driver's operation (such as acceleration, braking, steering, etc.), the vehicle's working mode (such as starting, constant speed driving, climbing, etc.) and external environmental conditions (such as wind speed, road slope, traffic conditions, etc.). Fuel cell accessories refer to all auxiliary system components in fuel cell electric vehicles except the fuel cell stack. These accessories are crucial to the stable operation of the fuel cell stack and the performance of the whole vehicle. The power consumption of accessories refers to the power consumed by the fuel cell accessories during operation. Since these accessories require electrical energy to perform their functions, they will consume a certain amount of electrical energy. The power consumption of accessories is an important factor affecting the energy efficiency and cruising range of the whole vehicle.

[0028] For example, the current vehicle power demand can be received or calculated first, which is usually based on the vehicle's operating status, the driver's input (such as the accelerator pedal position), and the vehicle's current speed and load conditions; then, based on the vehicle power demand, the vehicle power demand is decomposed into the driving power demand of the fuel cell stack and the power consumption demand of each accessory through a preset mapping relationship or algorithm, and the specific power consumption of the fuel cell accessories is calculated.

[0029] By implementing step 101, the portion of the vehicle power demand used for fuel cell accessories (such as cooling pumps, air compressors, etc.) can be accurately identified, which can ensure the accuracy of subsequent energy consumption calculations and can also more specifically consider how to allocate this part of the power to optimize the energy efficiency of the vehicle.

[0030] Step 102, calculating the first vehicle energy consumption when the fuel cell stack provides power consumption for accessories;

[0031] Specifically, the fuel cell stack is the core component of the fuel cell system in a fuel cell electric vehicle. It directly converts chemical energy into electrical energy through the electrochemical reaction of hydrogen and oxygen to provide power for the vehicle. The fuel cell stack consists of multiple fuel cell units (monomers), which are stacked together in a certain order to generate sufficient voltage and current to meet the power requirements of the vehicle. The first vehicle energy consumption refers to the total energy consumed during the entire vehicle operation when the fuel cell stack provides the power consumption of the accessories.

[0032] Step 103, calculating the second vehicle energy consumption when the energy storage device provides the power consumption of the accessories;

[0033] Specifically, energy storage devices refer to devices used to store and provide electrical energy in fuel cell electric vehicles. The most common are battery packs, such as lithium-ion batteries. Energy storage devices can store energy when there is excess electrical energy generated by the fuel cell stack, and release energy for vehicle use when needed. Second, vehicle energy consumption refers to the total energy consumed during the entire vehicle operation process when the energy storage device provides power consumption for accessories.

[0034] Step 104, based on the comparison result of the first whole vehicle energy consumption and the second whole vehicle energy consumption, determining the accessory power consumption provided by the energy storage device or the fuel cell stack;

[0035] Specifically, first, the first vehicle energy consumption obtained by calculation or measurement (i.e., the vehicle energy consumption under specific conditions when all accessory power is provided by the energy storage device) and the second vehicle energy consumption (i.e., the vehicle energy consumption under specific conditions when all accessory power is provided by the fuel cell stack) can be compared; then, based on the comparison results, evaluate which power supply method is more efficient or economical under the current operating conditions, based on energy consumption differences, fuel cell efficiency, the state of the energy storage device (such as power, life) and possible external factors (such as electricity price, ambient temperature, etc.); finally, based on the above evaluation, determine whether the energy storage device or the fuel cell stack provides the power consumption for the accessories.

[0036] By implementing step 104, the energy consumption of the whole vehicle under two different situations is compared, and the solution with lower energy consumption can be intelligently selected; if the energy consumption of the whole vehicle when the energy storage device provides the power consumption of the accessories is lower, then the energy storage device is selected to bear this part of the load, which helps to improve the energy efficiency of the whole vehicle and extend the cruising range; conversely, if the energy consumption of the whole vehicle when the fuel cell stack provides the power consumption of the accessories is lower, then the fuel cell stack is selected to bear this part of the load, which also helps to optimize the energy efficiency of the whole vehicle; this decision-making method based on actual energy consumption data is more flexible and efficient than the traditional fixed allocation method, and can better adapt to different driving conditions and needs.

[0037] In summary, the embodiment of the present application determines which system provides the power consumption of the accessories by comparing the energy consumption of the first vehicle and the energy consumption of the second vehicle, and automatically selects the solution with lower energy consumption based on the intelligent decision-making mechanism of actual data, so as to maximize the energy efficiency of the whole vehicle. In summary, the vehicle safe driving warning method provided by the embodiment of the present application optimizes the power consumption distribution of fuel cell electric vehicles through accurate energy consumption evaluation, flexible energy consumption optimization strategy and intelligent decision-making mechanism, improves the energy efficiency of the whole vehicle, and can also extend the vehicle's cruising range to a certain extent and improve user experience.

[0038] In some embodiments, the aforementioned step 101 may include: detecting the working state of the fuel cell system, wherein the aforementioned working state may include a startup state, an operating state, and a shutdown state; when the working state is an operating state, determining the accessory power consumption of the fuel cell accessories according to the power demand of the entire vehicle.

[0039] Specifically, the fuel cell system is a key component of a fuel cell electric vehicle, including a fuel cell stack and fuel cell accessories.

[0040] Exemplarily, first, the current working state of the fuel cell system can be detected in real time by sensors or other monitoring devices, and the working state includes but is not limited to the startup state (i.e., the fuel cell is in the process of starting), the operating state (the fuel cell has been started normally and is providing power to the vehicle) and the shutdown state (the fuel cell has stopped working); then, based on the detected data, it is determined what working state the fuel cell system is currently in; finally, when it is determined that the fuel cell system is in an operating state, the accessory power consumption required by the fuel cell accessories is further determined based on the power demand of the entire vehicle (which can be obtained through the vehicle control unit or the energy management system).

[0041] By implementing the above embodiments, the working state of the fuel cell system is detected, and the power consumption of the accessories is determined only in the operating state, which can avoid unnecessary energy consumption calculations in the startup and shutdown states, improve calculation efficiency, and ensure the accuracy of the accessory power consumption distribution.

[0042] In some embodiments, the aforementioned step 101 may include: determining the first output power of the fuel cell system and the second output power of the energy storage device according to the power demand of the entire vehicle and the preset power output ratio; determining the accessory consumption power of the fuel cell accessory according to the first output power.

[0043] Specifically, the preset power output ratio is the preset power output ratio between the fuel cell system and the energy storage device (such as a battery pack) in a fuel cell electric vehicle. This ratio is determined based on the vehicle's design, performance requirements, and energy efficiency optimization goals. The preset power output ratio determines the power output share that the fuel cell stack and the energy storage device should each bear during the operation of the vehicle. The first output power refers to the power actually output by the fuel cell system under a specific working state. The first output power is calculated based on the power demand of the entire vehicle and the preset power output ratio. The second output power refers to the power actually output by the energy storage device (such as a battery pack) under a specific working state. The second output power is also calculated based on the power demand of the entire vehicle and the preset power output ratio.

[0044] For example, the first output power that the fuel cell system should provide and the second output power that the energy storage device should provide can be accurately calculated based on the real-time power demand of the vehicle and the preset power output ratio between the fuel cell system and the energy storage device. After determining the first output power of the fuel cell system, the power consumption required by these accessories is calculated and determined based on the operating state of the fuel cell system (such as load, temperature, etc.) and the operating characteristics of the fuel cell accessories (such as cooling system, gas management system, etc.).

[0045] Through the implementation of the above embodiments, the output power of the fuel cell system and the energy storage device is determined according to the power demand of the entire vehicle and the preset power output ratio, which helps to achieve optimal allocation of the fuel cell electric vehicle power system and improve energy utilization efficiency.

[0046] In some embodiments, the aforementioned accessory power consumption allocation optimization method may further include: performing vehicle speed timing prediction based on vehicle speed history records to obtain a target predicted vehicle speed; and determining a preset power output ratio based on the target predicted vehicle speed and the current temperature.

[0047] Specifically, the speed history record refers to the speed data recorded during the vehicle's driving process in the past period of time, including the vehicle's speed information at different time points, which can be used to analyze the vehicle's driving mode, speed change trend, etc.; the target predicted speed refers to the speed that the vehicle is expected to reach in the future period of time, obtained by analyzing and predicting the speed history records. Speed ​​time series prediction is a method of using historical data to predict future speeds, which usually involves time series analysis, machine learning models or other prediction algorithms.

[0048] For example, the historical speed data of the vehicle can be collected and stored first, and the speed data can be processed and analyzed using algorithms such as time series analysis, machine learning or deep learning to predict the target speed in the future. This prediction takes into account the trend, periodicity and possible random fluctuations of the speed change, and aims to improve the accuracy and practicality of the prediction. After obtaining the target predicted speed, the current real-time temperature information can be combined with predefined rules or models to calculate the optimal power output ratio between the fuel cell system and the energy storage device. This ratio takes into account the changes in the vehicle's power demand at different speeds, as well as the impact of temperature on fuel cell performance and energy efficiency, and aims to maximize energy utilization and optimize vehicle performance.

[0049] Through the implementation of the above-mentioned embodiments, the power consumption distribution of accessories can be made more in line with actual driving needs, resource consumption caused by frequent adjustment of the preset power output ratio can be avoided, and the economy and power performance of the vehicle can be further improved.

[0050] In some embodiments, the aforementioned step 102 may include: calculating a first stack energy consumption of a fuel cell stack based on a first hydrogen consumption, wherein the first hydrogen consumption is calculated based on a first output power and accessory power consumption; calculating a first device energy consumption of an energy storage device based on a second output power; and calculating a first whole vehicle energy consumption based on the first stack energy consumption and the first device energy consumption.

[0051] Specifically, the first hydrogen consumption refers to the amount of hydrogen consumed by the fuel cell stack when the fuel cell stack provides the power consumption of the accessories. This amount is calculated based on the first output power of the fuel cell stack (i.e., the total power of the fuel cell stack to provide electrical energy for driving the vehicle and accessories) and the accessory consumption power (i.e., the power required for the operation of the fuel cell accessories). The hydrogen consumption is usually proportional to the output power of the stack. Therefore, by calculating the output power of the stack, the corresponding hydrogen consumption can be estimated. The first stack energy consumption refers to the energy consumption of the fuel cell stack when providing the first output power, which can be obtained by calculating the first hydrogen consumption; the first device energy consumption refers to the energy consumption of the energy storage device (such as a battery pack) when providing the second output power. This energy consumption is usually measured in terms of electrical energy consumption, which reflects the energy consumption of the energy storage device under a specific working state.

[0052] Exemplarily, first, the corresponding first hydrogen consumption can be obtained by looking up a table or calculating a model based on the first output power of the fuel cell system and the power consumption of the accessories; then, the product of the first hydrogen consumption and the lower calorific value of hydrogen is calculated to determine the energy consumption of the fuel cell stack, and the charging efficiency and discharging efficiency at this time are obtained by looking up a table based on the current SOC, temperature and other information of the energy storage device; the energy consumption of the energy storage device is calculated based on the first output power of the energy storage device and the charging and discharging efficiency obtained above; finally, the first stack energy consumption of the fuel cell stack and the first device energy consumption of the energy storage device are added to obtain the first whole vehicle energy consumption.

[0053] Through the implementation of the above-mentioned embodiment, the energy consumption of the fuel cell stack (i.e., the first stack energy consumption) and the energy consumption of the energy storage device (i.e., the first device energy consumption) are calculated separately, and finally summarized into the first whole vehicle energy consumption, which fully considers the actual energy consumption of the fuel cell stack when simultaneously meeting the vehicle drive and accessory power consumption requirements, thereby ensuring the accuracy of the energy consumption calculation.

[0054] In some embodiments, the aforementioned step 103 may include: calculating a second stack energy consumption of the fuel cell stack based on a second hydrogen consumption, wherein the second hydrogen consumption is calculated based on the first output power; calculating a second device energy consumption of the energy storage device based on the second output power and accessory power consumption; and calculating a second vehicle energy consumption based on the second stack energy consumption and the second device energy consumption.

[0055] Specifically, the second hydrogen consumption refers to the amount of hydrogen consumed by the fuel cell stack when the accessory power consumption is provided by the energy storage device during the operation of the fuel cell electric vehicle. This consumption is calculated based on the output power of the fuel cell stack when providing the electric energy required to drive the vehicle; the second stack energy consumption refers to the energy consumption of the fuel cell stack when providing the second output power, which can be obtained by calculating the second hydrogen consumption; the second device energy consumption refers to the energy consumed by the energy storage device when providing accessory power consumption and supporting vehicle driving. This energy consumption is measured in terms of electric energy consumption, which includes the energy consumption of the energy storage device to provide electric energy for accessories and the additional power provided for vehicle driving. When calculating the second vehicle energy consumption, the second stack energy consumption and the second device energy consumption are added together to obtain the total energy consumption of the vehicle when the energy storage device provides accessory power consumption.

[0056] Exemplarily, first, the corresponding second hydrogen consumption can be obtained by looking up the table according to the first output power of the fuel cell system; then, the second hydrogen consumption and the low calorific value of hydrogen are used to calculate the second stack energy consumption of the fuel cell stack; the total output power of the energy storage device is the output power of the energy storage device itself plus the power consumption of the accessories, and the charging efficiency and discharging efficiency at this time are obtained by looking up the table based on the current SOC, temperature and other information of the energy storage device; the energy consumption of the energy storage device is calculated based on the first output power of the energy storage device and the charging and discharging efficiency obtained above; finally, the second stack energy consumption of the fuel cell stack and the second device energy consumption of the energy storage device are added to obtain the second vehicle energy consumption.

[0057] Through the implementation of the above-mentioned embodiments, the energy consumption of the fuel cell stack when only providing vehicle driving power (i.e., the second stack energy consumption) and the energy consumption of the energy storage device when providing accessory power consumption (i.e., the second device energy consumption) are calculated separately and summarized as the second whole vehicle energy consumption, thereby achieving an accurate assessment of the whole vehicle energy consumption when the energy storage device provides accessory power consumption.

[0058] In some embodiments, the aforementioned step 104 may include: when the first vehicle energy consumption is greater than the second vehicle energy consumption and the charge state of the energy storage device is greater than a preset ratio, the energy storage device provides power for accessory consumption; otherwise, the fuel cell stack provides power for accessory consumption.

[0059] Specifically, the preset ratio refers to a threshold used to compare the state of charge (SOC) of the energy storage device in the energy consumption management strategy of the fuel cell electric vehicle. This ratio is set based on the vehicle's design, performance requirements and energy efficiency optimization goals. The preset ratio is usually a percentage, which represents the ratio between the state of charge of the energy storage device and its maximum state of charge. First, the first vehicle energy consumption and the second vehicle energy consumption calculated under two different conditions can be compared; then, the current state of charge (SOC) of the energy storage device (such as a battery pack) is checked and compared with a preset ratio indicating sufficient power. If the energy consumption of the first vehicle is greater than that of the second vehicle, and at the same time, the state of charge of the energy storage device is greater than the preset ratio, this indicates that under the current conditions, it is more economical or efficient to use the energy storage device to provide the power consumption of the accessories, because higher energy consumption of the whole vehicle may mean that the current driving mode has a greater demand for energy, and the energy storage device can meet this demand when the power is sufficient, while reducing dependence on the fuel cell stack and extending its service life; if any of the above conditions is not met, that is, the energy consumption of the first vehicle is not greater than the energy consumption of the second vehicle, or the state of charge of the energy storage device is not greater than the preset ratio, then it is judged that it is more appropriate for the fuel cell stack to provide the power consumption of the accessories.

[0060] Through the implementation of the above embodiments, the energy consumption of the whole vehicle can be reduced to the maximum extent and the energy efficiency can be improved under the premise of ensuring the normal operation of the vehicle; at the same time, by considering the charge state of the energy storage device, the performance degradation or damage caused by excessive discharge is avoided.

[0061] Furthermore, as an implementation of the aforementioned method embodiment, the present application also provides an accessory power consumption allocation optimization device, which is used to implement the aforementioned method embodiment. The device embodiment corresponds to the aforementioned method embodiment. For ease of reading, the present accessory power consumption allocation optimization device embodiment will no longer repeat the details of the aforementioned method embodiment one by one, but it should be clear that the device in the embodiment of the present application can correspond to all the contents of the aforementioned method embodiment. Figure 2 As shown, the accessory power consumption allocation optimization device 20 includes: a power determination unit 201, an energy consumption determination unit 202 and an energy supply determination unit 203, wherein the power determination unit 201 is used to determine the accessory power consumption of the fuel cell accessory according to the power demand of the whole vehicle; the energy consumption determination unit 202 is used to calculate the first whole vehicle energy consumption when the fuel cell stack provides the accessory power consumption; the energy consumption determination unit 202 is also used to calculate the second whole vehicle energy consumption when the energy storage device provides the accessory power consumption; the energy supply determination unit 203 is used to determine the accessory power consumption provided by the energy storage device or the fuel cell stack based on the comparison result of the first whole vehicle energy consumption and the second whole vehicle energy consumption.

[0062] In some embodiments, the power determination unit 201 is also used to detect the working state of the fuel cell system, where the working state includes a start-up state, an operating state, and a shutdown state; when the working state is an operating state, the accessory power consumption of the fuel cell accessories is determined according to the power demand of the entire vehicle.

[0063] In some embodiments, the power determination unit 201 is also used to determine the first output power of the fuel cell system and the second output power of the energy storage device according to the power demand of the entire vehicle and the preset power output ratio; and determine the accessory consumption power of the fuel cell accessories according to the first output power.

[0064] In some embodiments, the accessory power consumption allocation optimization device 20 also includes a ratio determination unit for performing vehicle speed timing prediction based on vehicle speed history records to obtain a target predicted vehicle speed; and determining a preset power output ratio based on the target predicted vehicle speed and the current temperature.

[0065] In some embodiments, the energy consumption determination unit 202 is also used to calculate a first stack energy consumption of the fuel cell stack based on the first hydrogen consumption, wherein the first hydrogen consumption is calculated based on the first output power and the accessory power consumption; to calculate a first device energy consumption of the energy storage device based on the second output power; and to calculate a first vehicle energy consumption based on the first stack energy consumption and the first device energy consumption.

[0066] In some embodiments, the energy consumption determination unit 202 is also used to calculate a second stack energy consumption of the fuel cell stack based on a second hydrogen consumption, wherein the second hydrogen consumption is calculated according to the first output power; to calculate a second device energy consumption of the energy storage device based on the second output power and the accessory power consumption; and to calculate a second vehicle energy consumption based on the second stack energy consumption and the second device energy consumption.

[0067] In some embodiments, the energy supply determination unit 203 is also used to provide accessory power consumption by the energy storage device when the first vehicle energy consumption is greater than the second vehicle energy consumption and the charge state of the energy storage device is greater than a preset ratio; otherwise, the fuel cell stack provides accessory power consumption.

[0068] The present application also provides a computer-readable storage medium, which stores computer-executable instructions or computer programs. When the computer-executable instructions or computer programs are executed by a processor, the processor will be caused to execute any step of the accessory power consumption allocation optimization method provided in the present application.

[0069] In some embodiments, the computer-readable storage medium may be a memory such as RAM, read-only memory (ROM), flash memory, magnetic surface memory, optical disk, or compact disc read-only memory (CD-ROM); or it may be various devices including one or any combination of the above memories.

[0070] In some embodiments, computer executable instructions may be in the form of a program, software, software module, script or code, written in any form of programming language (including compiled or interpreted languages, or declarative or procedural languages), and may be deployed in any form, including as a stand-alone program or as a module, component, subroutine or other unit suitable for use in a computing environment.

[0071] In some embodiments, computer-executable instructions may, but need not, correspond to a file in a file system, may be stored as part of a file storing other programs or data, for example, in one or more scripts in a HyperText Markup Language (HTML) document, in a single file dedicated to the program in question, or in multiple coordinated files (e.g., files storing one or more modules, subroutines, or code portions).

[0072] In some embodiments, computer executable instructions may be deployed to be executed on one electronic device, or on multiple electronic devices located at one site, or on multiple electronic devices distributed at multiple sites and interconnected by a communication network.

[0073] like Figure 3 As shown, the present application also provides an electronic device 30, including a memory 310, a processor 320, and a computer program 311 stored in the memory 310 and executable on the processor, and when the processor 320 executes the computer program 311, any step of the above-mentioned accessory power consumption allocation optimization method is implemented.

[0074] The present application also provides a computer program product, which includes a computer program or a computer executable instruction, and the computer program or the computer executable instruction is stored in a computer-readable storage medium. The processor of the electronic device reads the computer program or the computer executable instruction from the computer-readable storage medium, and the processor executes the computer program or the computer executable instruction, so that the electronic device performs any step of the accessory power consumption allocation optimization method described above in the present application.

[0075] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application 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 application.

Claims

1. A method for optimizing the power consumption distribution of accessories, applied to a fuel cell electric vehicle, characterized in that: include: Determine the accessory power consumption of the fuel cell accessories based on the vehicle power requirements; Calculating a first vehicle energy consumption when the fuel cell stack provides power consumed by the accessory; Calculating a second vehicle energy consumption when the energy storage device provides the power consumed by the accessory; Based on the comparison result of the first whole vehicle energy consumption and the second whole vehicle energy consumption, it is determined that the power consumed by the accessory is provided by the energy storage device or the fuel cell stack.

2. The method for optimizing the power consumption distribution of accessories according to claim 1, characterized in that: The step of determining the accessory power consumption of the fuel cell accessory according to the power demand of the entire vehicle includes: Detecting the working state of the fuel cell system, wherein the working state includes a startup state, an operation state, and a shutdown state; When the working state is the running state, the accessory power consumption of the fuel cell accessory is determined according to the power demand of the entire vehicle.

3. The method for optimizing the power consumption distribution of accessories according to claim 1, characterized in that: The step of determining the accessory power consumption of the fuel cell accessory according to the power demand of the entire vehicle includes: Determining a first output power of the fuel cell system and a second output power of the energy storage device according to the vehicle power demand and a preset power output ratio; The accessory consumption power of the fuel cell accessory is determined according to the first output power.

4. The method for optimizing the power consumption distribution of accessories according to claim 3, characterized in that: The accessory power consumption allocation optimization method further includes: Perform vehicle speed time series prediction based on vehicle speed history records to obtain target predicted vehicle speed; The preset power output ratio is determined according to the target predicted vehicle speed and the current air temperature.

5. The method for optimizing the power consumption distribution of accessories according to claim 3, characterized in that: The calculating of the first vehicle energy consumption when the fuel cell stack provides the power consumed by the accessory includes: Calculating a first stack energy consumption of the fuel cell stack based on a first hydrogen consumption, wherein the first hydrogen consumption is calculated based on the first output power and the accessory power consumption; Calculate the first device energy consumption of the energy storage device based on the second output power; The first whole vehicle energy consumption is calculated based on the first battery stack energy consumption and the first device energy consumption.

6. The method for optimizing the power consumption distribution of accessories according to claim 3, characterized in that: The calculating of the second vehicle energy consumption when the energy storage device provides the power consumed by the accessory includes: Calculating a second energy consumption of the fuel cell stack based on a second hydrogen consumption, wherein the second hydrogen consumption is calculated according to the first output power; Calculate the second device energy consumption of the energy storage device based on the second output power and the power consumption of the accessory; The second whole vehicle energy consumption is calculated based on the second battery stack energy consumption and the second device energy consumption.

7. The method for optimizing the power consumption distribution of accessories according to any one of claims 1 to 6, characterized in that: The determining, based on the comparison result of the first whole vehicle energy consumption and the second whole vehicle energy consumption, that the energy storage device or the fuel cell stack provides the accessory power consumption includes: When the first vehicle energy consumption is greater than the second vehicle energy consumption and the state of charge of the energy storage device is greater than a preset ratio, the energy storage device provides the power consumed by the accessory; otherwise, the fuel cell stack provides the power consumed by the accessory.

8. An accessory power consumption allocation optimization device, characterized in that: include: A power determination unit, used to determine the accessory consumption power of the fuel cell accessories according to the power demand of the entire vehicle; An energy consumption determination unit, used to calculate a first vehicle energy consumption when the fuel cell stack provides the power consumed by the accessory; The energy consumption determination unit is further used to calculate the second vehicle energy consumption when the energy storage device provides the power consumed by the accessory; An energy supply determination unit is used to determine, based on a comparison result of the first whole vehicle energy consumption and the second whole vehicle energy consumption, whether the energy storage device or the fuel cell stack is used to provide the power consumed by the accessory.

9. An electronic device, comprising: A memory and a processor, wherein the processor is used to implement the steps of the accessory power consumption allocation optimization method as described in any one of claims 1 to 7 when executing the computer program stored in the memory.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the accessory power consumption allocation optimization method according to any one of claims 1 to 7 are implemented.

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