An energy management method and device for a hydrogen fuel electric vehicle and a storage medium

Abstract

The application discloses a hydrogen fuel electric vehicle energy management method and device in the technical field of battery control and a storage medium, and aims to solve the problems of low working efficiency of a hydrogen fuel engine and failure to control the power battery power usage range in the prior art. The method comprises the following steps: in response to a received mode activation instruction, acquiring residual power information of the power battery; judging whether the residual power information is less than or equal to a preset threshold X; if yes, according to a preset control strategy and collected vehicle working parameters, a control signal is sent to the hydrogen fuel engine to make it generate power at a corresponding power until the residual power information is greater than a preset threshold Y, wherein Y is greater than X. The application can control the hydrogen fuel engine to generate power at a corresponding suitable power, thereby maximizing the system efficiency of the hydrogen fuel engine, and can maintain the power of the power battery in a suitable usage range, so that the service life of the power battery can be prolonged.

Description

Technical Field

[0001] This invention relates to the field of battery control technology, specifically to an energy management method, device, and storage medium for hydrogen fuel cell electric vehicles. Background Technology

[0002] With increasing global environmental awareness, the automotive industry is placing greater emphasis on the research and development and promotion of green and environmentally friendly technologies. New energy vehicles, as alternatives to traditional automobiles, have become a significant development trend in the automotive industry. Among new energy vehicles, hydrogen power technology has attracted considerable attention. Hydrogen power technology refers to the use of hydrogen fuel cells and their power generation conversion methods to react hydrogen and oxygen to produce electricity, thereby propelling the vehicle. Compared to traditional gasoline-powered vehicles, hydrogen-powered vehicles not only offer advantages such as being environmentally friendly, having zero emissions, and high safety, but also feature efficient and convenient refueling and a long driving range.

[0003] The new energy vehicle industry has experienced unprecedented development. The "three-electric" technologies—motors, batteries, and electronic controls—are maturing rapidly, leading to cost reductions and driving the electrification trend in construction machinery. Loaders, as a typical representative of construction machinery, are characterized by fixed operating environments and small operating radii. These characteristics give loaders an unparalleled advantage in the electrification transition. Hydrogen fuel cell hybrid loaders combine the features of both hydrogen fuel cell and electric loaders, possessing the green, environmentally friendly, and zero-emission advantages of hydrogen fuel cell vehicles while also offering the extreme power of electric vehicles.

[0004] However, due to the diversity and uncertainty of actual working conditions, it is currently impossible to control the timely intervention and shutdown of hydrogen fuel cell engines, resulting in low working efficiency. Furthermore, the battery's charge usage range cannot be controlled, shortening the battery's lifespan. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide an energy management method, device and storage medium for hydrogen fuel cell electric vehicles, solving the problems of low working efficiency of current hydrogen fuel cell engines and failure to control the power battery's power usage range.

[0006] To solve the above-mentioned technical problems, the present invention is implemented using the following technical solution:

[0007] In a first aspect, the present invention provides an energy management method for a hydrogen fuel cell electric vehicle, executed by a vehicle controller, comprising the following steps:

[0008] A: In response to the received mode activation command, obtain the remaining power information of the power battery;

[0009] B: Determine whether the remaining battery power information is less than or equal to a preset threshold X. If yes, proceed to step C; otherwise, proceed to step D.

[0010] C: Based on the preset control strategy and the collected vehicle operating parameters, a control signal is sent to the hydrogen fuel cell engine to generate electricity at the corresponding power output until the remaining power information is greater than the preset threshold Y, where Y is greater than X;

[0011] D: Repeat steps A through C until no more mode activation commands are received.

[0012] Furthermore, the collected vehicle operating parameters include: average vehicle power consumption, remaining battery charge information, and maximum charging power of the battery.

[0013] Furthermore, the control strategy includes: the hydrogen fuel cell engine generates electricity in stages with a cycle of M minutes, and the power generation for each cycle is calculated using the following formula:

[0014]

[0015]

[0016] In the formula, n represents the number of cycles, W n P represents the power generation of the hydrogen fuel cell engine in the nth cycle, where A represents the preset power generation. n-1 ΔP represents the average power consumption of the entire vehicle during the (n-1)th cycle. n-1 K represents the power consumption difference in the (n-1)th cycle. n K represents the remaining battery power at the start of the nth cycle. n-1 This indicates the remaining power capacity of the power battery at the start of the (n-1)th cycle. G represents the total capacity of the power battery in kWh, and M represents the cycle duration in min.

[0017] Furthermore, the control strategy also includes: calculating W at the beginning of each cycle. n after;

[0018] Determine W n Is it greater than the maximum charging power (W) of the power battery? p If so, then let the power generation of the hydrogen fuel cell engine during that cycle be W. p Otherwise, let the power generation of the hydrogen fuel cell engine during this cycle be W. n .

[0019] Furthermore, the power generation A is set to 50KW, and the cycle duration M is set to 3min.

[0020] Furthermore, before determining whether the remaining battery power information is less than or equal to a preset threshold X, the process also includes:

[0021] If the remaining power information is less than or equal to a preset threshold Z, a control signal is sent to the hydrogen fuel cell engine to generate electricity at a preset power output B until the remaining power information reaches a preset threshold S, where Z is less than S and S is less than X.

[0022] Furthermore, the threshold X is set to 75%, the threshold Y is set to 80%, the threshold Z is set to 50%, and the threshold S is set to 60%.

[0023] Furthermore, the power generation capacity B is set to 100KW.

[0024] In a second aspect, the present invention provides an energy management device for a hydrogen fuel cell electric vehicle, comprising a processor and a storage medium; the storage medium is used to store instructions; the processor is used to operate according to the instructions to perform the steps of the method according to the first aspect.

[0025] Thirdly, the present invention provides a computer-readable storage medium for storing one or more programs, said one or more programs including instructions that, when executed by a computing device, cause the computing device to perform any of the methods according to the first aspect.

[0026] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0027] 1. This invention can achieve energy management based on the remaining power information of the power battery, thereby controlling the hydrogen fuel cell engine to generate electricity at an appropriate power based on the actual needs of different operating conditions, thereby maximizing the system efficiency of the hydrogen fuel cell engine.

[0028] 2. This invention compares the remaining power information with a preset threshold, thereby maintaining the power battery's power within a suitable operating range and extending the battery's lifespan.

[0029] 3. This invention can adapt to different operating habits and can automatically adjust the power generation of the hydrogen fuel engine according to the actual power consumption of the vehicle, making it suitable for various actual working conditions. Attached Figure Description

[0030] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0031] Figure 1 This is a flowchart of an energy management method for a hydrogen fuel cell electric vehicle provided in an embodiment of the present invention. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0033] Example 1:

[0034] This invention provides an energy management method for hydrogen fuel cell electric vehicles, executed by the vehicle controller, comprising the following steps:

[0035] S1: In response to the received mode activation command, obtain the remaining power information of the power battery.

[0036] S2: Determine whether the remaining power information is less than or equal to a preset threshold Z. If so, send a control signal to the hydrogen fuel engine to generate electricity at a preset power output B until the remaining power information reaches a preset threshold S, where Z is less than S.

[0037] In this embodiment, the threshold Z is set to 50%, the threshold S is set to 60%, and the power generation B is set to 100KW.

[0038] It should be noted that since the remaining power of the power battery is relatively low at this time, the hydrogen fuel cell engine needs to generate electricity at a higher power output (B) to replenish the power battery and ensure that the power level is relatively high. If the vehicle starts working at this time, the power battery and the hydrogen fuel cell engine will both serve as energy sources to provide electrical power for the entire vehicle.

[0039] It should be noted that when the power battery's charge level rises to the threshold S, it is considered to be in a medium charge state, and therefore no further high-power replenishment is needed.

[0040] S3: Determine whether the remaining battery power information is less than or equal to a preset threshold X. If yes, proceed to step S4; otherwise, proceed to step S5.

[0041] In this embodiment, the threshold X is set to 75%, but it is not limited to this and can be other values, as long as Y is greater than X and S is less than X. There is no specific limitation.

[0042] It should be noted that when the power battery's charge drops from threshold Y to threshold X, in order to prevent the power battery's charge from continuing to decrease due to vehicle operation, it is necessary to request the hydrogen fuel cell engine to generate electricity to replenish the power battery's charge until the power battery's charge rises back to threshold Y.

[0043] S4: Based on the preset control strategy and the collected vehicle operating parameters, send a control signal to the hydrogen fuel cell engine to generate electricity at the corresponding power output until the remaining power information is greater than the preset threshold Y, where Y is greater than X.

[0044] In this embodiment, the threshold Y is set to 80%.

[0045] It should be noted that the collected vehicle operating parameters include: average vehicle power consumption, remaining battery charge information, and maximum charging power of the battery.

[0046] The control strategy includes: the hydrogen fuel cell engine generates electricity in stages with a cycle of M minutes, and the power generation in each cycle is calculated using the following formula:

[0047]

[0048]

[0049] In the formula, n represents the number of cycles, W n P represents the power generation of the hydrogen fuel cell engine in the nth cycle, where A represents the preset power generation. n-1 ΔP represents the average power consumption of the entire vehicle during the (n-1)th cycle. n-1 K represents the power consumption difference in the (n-1)th cycle. n K represents the remaining battery power at the start of the nth cycle. n-1 This indicates the remaining power capacity of the power battery at the start of the (n-1)th cycle. G represents the total capacity of the power battery in kWh, and M represents the cycle duration in min.

[0050] In this embodiment, the power generation A is set to 50KW and the cycle duration M is set to 3min; however, it is not limited to these and may be other settings, and no specific limitation is imposed.

[0051] The control strategy further includes: calculating W at the beginning of each cycle. n after;

[0052] Determine W n Is it greater than the maximum charging power (W) of the power battery? p If so, then let the power generation of the hydrogen fuel cell engine during that cycle be W. p Otherwise, let the power generation of the hydrogen fuel cell engine during this cycle be W. n .

[0053] Understandably, limiting the power output of the hydrogen fuel cell engine to less than the maximum charging power of the battery is intended to avoid potential battery damage and overheating, thereby extending battery life and charging efficiency.

[0054] S5: Repeat steps S1 to S4 until no more mode activation commands are received.

[0055] Example 2:

[0056] This embodiment provides an energy management device for a hydrogen fuel cell electric vehicle, which differs from Embodiment 1 in that it includes a processor and a storage medium; the storage medium is used to store instructions; the processor is used to operate according to the instructions to execute the steps of the method according to Embodiment 1.

[0057] Example 3:

[0058] A computer-readable storage medium storing one or more programs, the one or more programs including instructions that, when executed by a computing device, cause the computing device to perform the method according to Embodiment 1.

[0059] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0060] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0061] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0062] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0063] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An energy management method for a hydrogen fuel cell electric vehicle, executed by a vehicle controller, characterized in that, Includes the following steps: A: In response to the received mode activation command, obtain the remaining power information of the power battery; B: Determine whether the remaining battery power information is less than or equal to a preset threshold. If yes, proceed to step C; otherwise, proceed to step D. C: Based on the preset control strategy and collected vehicle operating parameters, a control signal is sent to the hydrogen fuel cell engine to generate electricity at a corresponding power output until the remaining power information exceeds a preset threshold. ,in Greater than ; D: Repeat steps A through C until no more mode activation commands are received; The collected vehicle operating parameters include: average vehicle power consumption, remaining battery charge information, and maximum charging power of the battery. The control strategy includes: a hydrogen fuel cell engine... Power generation is carried out in stages, with each stage lasting one minute. The power output for each stage is calculated using the following formula: ； ； In the formula, Indicates the number of periods. Indicates that the hydrogen fuel cell engine is in the first Power generation per cycle This indicates the preset power generation capacity. Indicates the first Average power consumption of the whole vehicle within a cycle Indicates the first The difference in power consumption over each cycle, Indicates the first Information on the remaining charge of the power battery at the start of each cycle. Indicates the first Information on the remaining charge of the power battery at the start of each cycle. This indicates the total capacity of the power battery, in units of... , Indicates the duration of the period, in units of .

2. The energy management method for hydrogen fuel cell electric vehicles according to claim 1, characterized in that, The control strategy further includes: calculating at the beginning of each cycle... after; judge Is it greater than the maximum charging power of the power battery? If so, then the power generation of the hydrogen fuel cell engine during that cycle should be [value missing]. Otherwise, the power generation of the hydrogen fuel cell engine during that cycle would be [missing information]. .

3. The energy management method for hydrogen fuel cell electric vehicles according to claim 2, characterized in that, The power generation Set as The duration of the cycle Set to 3 .

4. The energy management method for hydrogen fuel cell electric vehicles according to claim 1, characterized in that, The system determines whether the remaining battery power is less than or equal to a preset threshold. Previously, it also included: Determine whether the remaining battery power information is less than or equal to a preset threshold. If so, a control signal is sent to the hydrogen fuel cell engine to generate electricity at a preset power output. Power generation continues until the remaining power information reaches a preset threshold. ,in Less than , Less than .

5. The energy management method for hydrogen fuel cell electric vehicles according to claim 4, characterized in that, The threshold Set as The threshold Set as The threshold Set as The threshold Set as .

6. The energy management method for hydrogen fuel cell electric vehicles according to claim 4, characterized in that, The power generation Set as .

7. An energy management device for a hydrogen fuel cell electric vehicle, characterized in that, It includes a processor and a storage medium; the storage medium is used to store instructions; the processor is used to operate according to the instructions to perform the steps of the method according to any one of claims 1 to 6.

8. A computer-readable storage medium for storing one or more programs, characterized in that, The one or more programs include instructions that, when executed by a computing device, cause the computing device to perform any one of the methods according to claims 1 to 6.

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