CN115230538A

CN115230538A - Fuel cell vehicle energy management method, device, electronic device and storage medium

Info

Publication number: CN115230538A
Application number: CN202211087861.9A
Authority: CN
Inventors: 李孝辉; 张松; 张国强
Original assignee: Beijing Sinohytec Co Ltd
Current assignee: Beijing Sinohytec Co Ltd
Priority date: 2022-09-07
Filing date: 2022-09-07
Publication date: 2022-10-25

Abstract

The invention provides a fuel cell automobile energy management method, a fuel cell automobile energy management device, electronic equipment and a storage medium. The fuel cell automobile energy management method comprises the following steps: inquiring a corresponding historical driving record in a historical database based on the acquired vehicle driving path; obtaining the total hydrogen consumption m of the driving path, the total output power P1 of the lithium battery and the total output power P2 of the fuel cell based on the historical driving record; obtaining total running time t of the vehicle, and obtaining equivalent total output power P3 of the fuel cell at a high efficiency point according to the total running time; calculating to obtain target output power P4 of the lithium battery and target output power P5 of the fuel battery according to the total output power P1 of the lithium battery, the total output power P2 of the fuel battery and the equivalent total output power P3; and managing the automobile energy based on the target output power P4 of the lithium battery and the target output power P5 of the fuel battery. The purpose of reducing the hydrogen consumption and the use cost of the fuel cell is achieved.

Description

Fuel cell vehicle energy management method, device, electronic device and storage medium

Technical Field

The invention belongs to the technical field of new energy, and particularly relates to a fuel cell automobile energy management method and device, electronic equipment and a storage medium.

Background

To commercialize fuel cell vehicles, the problem of high cost must be overcome. The fuel economy of a fuel cell vehicle determines the cost of use, and is directly related to two factors: i.e. the hydrogen consumption in hundred kilometres and the price of hydrogen. The overall vehicle powertrain matching and fuel cell engine efficiency directly affect hydrogen consumption. In a fuel cell engine, the energy of hydrogen is converted into electrical energy and thermal energy. When the fuel cell works, the higher the energy conversion efficiency of the fuel cell is, the lower the hydrogen consumption is, but the prior art can not automatically adjust the energy management strategy based on the vehicle parameters of the fuel cell vehicle, such as vehicle type, driving condition and the like, so that the fuel cell engine can not run at a high-efficiency point, the hydrogen consumption is increased, and the use cost is increased.

Disclosure of Invention

The invention provides a fuel cell automobile energy management method, a device, electronic equipment and a storage medium, aiming at the problems in the prior art, and at least partially solving the problem of high use cost caused by high hydrogen consumption in the prior art.

In a first aspect, an embodiment of the present disclosure provides a fuel cell vehicle energy management method, including:

inquiring a corresponding historical driving record in a historical database based on the acquired vehicle driving path;

obtaining the total hydrogen consumption m of the driving path, the total output power P1 of the lithium battery and the total output power P2 of the fuel cell based on the historical driving record;

obtaining total running time t of the vehicle, and obtaining equivalent total output power P3 of the fuel cell at a high efficiency point according to the total running time;

calculating to obtain target output power P4 of the lithium battery and target output power P5 of the fuel battery according to the total output power P1 of the lithium battery, the total output power P2 of the fuel battery and the equivalent total output power P3;

and managing the automobile energy based on the target output power P4 of the lithium battery and the target output power P5 of the fuel battery.

Optionally, the managing the vehicle energy based on the target output power P4 of the lithium battery and the target output power P5 of the fuel cell includes:

the method comprises the steps of obtaining positioning information of a vehicle, judging the running speed of the vehicle based on the positioning information, and controlling the lithium battery to discharge to a low-level SOC when the running speed of the vehicle is lower than a set threshold.

Optionally, the step of querying a history database for a corresponding history traveling record based on the acquired traveling path of the vehicle includes:

and saving the vehicle running record to a historical database.

Optionally, the saving the vehicle driving record to the history database includes:

identifying the vehicle type, and acquiring a vehicle driving starting point and a vehicle driving end point;

the method comprises the steps of acquiring running data of the vehicle from a starting point and an end point for a plurality of times, wherein the running data comprises output power of a fuel cell, SOC of a lithium battery, running time and hydrogen consumption.

Optionally, the querying, in the historical database, a corresponding historical driving record based on the acquired vehicle driving path includes:

the method comprises the steps of obtaining the vehicle type, the driving starting point and the driving end point of a vehicle, and inquiring corresponding driving data in a historical database on the basis of the vehicle type, the driving starting point and the driving end point.

Optionally, the calculating, according to the total output power P1 of the lithium battery, the total output power P2 of the fuel cell and the equivalent total output power P3, to obtain the target output power P4 of the lithium battery and the target output power P5 of the fuel cell includes:

if the total power required by the vehicle is B, the charging amount of the lithium battery by the fuel cell system is A, B = CP1+ P2-A, wherein C is a proportionality coefficient, P1 is the total output power of the lithium battery, and P2 is the total output power of the fuel cell;

on the premise that the target output power P5 of the fuel cell is equal to the equivalent total output power P3;

and obtaining the target output power P4 of the lithium battery through a formula B = P5+ CP 4-A.

Optionally, in the step of obtaining the target output power P4 of the lithium battery and the target output power P5 of the fuel cell by calculating according to the total output power P1 of the lithium battery, the total output power P2 of the fuel cell and the equivalent total output power P3,

the target output power P4 of the lithium battery is obtained through function fitting or a neural network algorithm.

In a second aspect, an embodiment of the present disclosure further provides a fuel cell vehicle energy management device, including: the query module is used for querying a corresponding historical driving record in a historical database based on the acquired vehicle driving path;

the data acquisition module is used for obtaining the total hydrogen consumption m of the driving path, the total output power P1 of the lithium battery and the total output power P2 of the fuel cell based on the historical driving record;

the vehicle data acquisition module is used for acquiring the total running time t of the vehicle and acquiring the equivalent total output power P3 of the fuel cell at a high efficiency point according to the total running time;

the calculation module is used for calculating to obtain target output power P4 of the lithium battery and target output power P5 of the fuel battery according to the total output power P1 of the lithium battery, the total output power P2 of the fuel battery and the equivalent total output power P3;

and the energy management module is used for managing the automobile energy based on the target output power P4 of the lithium battery and the target output power P5 of the fuel battery.

In a third aspect, an embodiment of the present disclosure further provides an electronic device, where the electronic device includes:

at least one processor; and the number of the first and second groups,

a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,

the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the fuel cell vehicle energy management method of any of the first aspects.

In a fourth aspect, the disclosed embodiments also provide a computer-readable storage medium storing computer instructions for causing a computer to execute the fuel cell vehicle energy management method according to any one of the first aspect.

The invention provides a fuel cell automobile energy management method, a device, electronic equipment and a storage medium, wherein the fuel cell automobile energy management method obtains a lithium battery target output power P4 and a fuel cell target output power P5 by calculating according to a lithium battery total output power P1, a fuel cell total output power P2 and an equivalent total output power P3; and managing the automobile energy based on the target output power P4 of the lithium battery and the target output power P5 of the fuel battery. Therefore, the fuel cell is controlled according to the driving route, so that the fuel cell works at a high-efficiency point to operate, and the purposes of reducing the hydrogen consumption and the use cost of the fuel cell are achieved.

Drawings

The foregoing and other objects, features and advantages of the disclosure will be apparent from the following more particular descriptions of exemplary embodiments of the disclosure as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the disclosure.

Fig. 1 is a flowchart of a method for managing energy of a fuel cell vehicle according to an embodiment of the present disclosure;

FIG. 2 is a schematic block diagram of a fuel cell automotive power system provided by an embodiment of the present disclosure;

fig. 3 is a schematic block diagram of an electronic device according to an embodiment of the disclosure.

Detailed Description

The embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

It is to be understood that the embodiments of the present disclosure are described below by way of specific examples, and that other advantages and effects of the present disclosure will be readily apparent to those skilled in the art from the disclosure herein. It is to be understood that the embodiments described are only a few embodiments of the present disclosure, and not all embodiments. The disclosure may be embodied or carried out in various other specific embodiments, and various modifications and changes may be made in the details within the description without departing from the spirit of the disclosure. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.

It is noted that various aspects of the embodiments are described below within the scope of the appended claims. It should be apparent that the aspects described herein may be embodied in a wide variety of forms and that any specific structure and/or function described herein is merely illustrative. Based on the disclosure, one skilled in the art should appreciate that one aspect described herein may be implemented independently of any other aspects and that two or more of these aspects may be combined in various ways. For example, an apparatus may be implemented and/or a method practiced using any number of the aspects set forth herein. Additionally, such an apparatus may be implemented and/or such a method may be practiced using other structure and/or functionality in addition to one or more of the aspects set forth herein.

It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present disclosure, and the drawings only show the components related to the present disclosure rather than the number, shape and size of the components in actual implementation, and the type, amount and ratio of the components in actual implementation may be changed arbitrarily, and the layout of the components may be more complicated.

In addition, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the aspects may be practiced without these specific details.

To facilitate understanding, the present embodiment discloses a fuel cell vehicle energy management method, including:

obtaining the total hydrogen consumption m, the total output power P1 of the lithium battery and the total output power P2 of the fuel battery of the driving path based on the historical driving record;

the method comprises the steps of obtaining positioning information of a vehicle, judging the running speed of the vehicle based on the positioning information, and controlling the lithium battery to discharge to a low-level SOC when the running speed of the vehicle is lower than a set threshold value.

Because the lithium battery SOC can force the fuel cell to shut down in order to avoid overcharging when too high, and the fuel cell shut down number of times is too much, can cause the life-span to accelerate and attenuate, consequently control lithium battery discharges to low level SOC, thereby can avoid this moment SOC too high to cause frequent switching on and shutting down of fuel cell to can improve fuel cell life-span.

Optionally, the step of querying a history database for a corresponding history traveling record based on the acquired vehicle traveling path includes:

and saving the vehicle running record to a historical database.

Optionally, saving the vehicle driving record to the history database comprises:

recognizing the vehicle type, and acquiring a vehicle driving starting point and a vehicle driving end point;

Optionally, in the step of calculating the target output power P4 of the lithium battery and the target output power P5 of the fuel cell according to the total output power P1 of the lithium battery, the total output power P2 of the fuel cell and the equivalent total output power P3,

In one specific example, as shown in fig. 1, a fuel cell vehicle energy management method includes:

s1, identifying the type of the fuel cell automobile, and the starting point and the end point of the fuel cell automobile.

And S2, when the starting point and the end point of the fuel cell automobile running in the near n days are detected to be unchanged, the step S3 is carried out.

And S3, uploading the operation information of the fuel cell automobile to a cloud platform through a data collector.

And S4, processing the information of the vehicle operation based on the cloud platform, wherein the information comprises the output power of the fuel cell, the SOC of the lithium battery, the operation time, the corresponding hydrogen consumption and the like. And calculating the total hydrogen consumption m, the total output power P1 of the lithium battery and the total output power P2 of the fuel cell for the driving mileage of the fuel cell automobile in each operation.

And S5, recording the total running time t of the current running mileage, and obtaining the equivalent total output power P3 of the ignition material battery with the highest efficiency according to the total running time.

In one specific example, taking a 120kw fuel cell as an example, 20kw, 32kw,50kw, and 62kw are more efficient, and P3 is obtained by multiplying one of these power points by the total operating time.

S6: and calculating and re-obtaining the target output power P4 of the lithium battery and the target output power P5 of the fuel cell according to the P1, the P2 and the P3 to obtain an optimized energy management strategy, so that the fuel cell always operates at a higher efficiency point, the efficiency of the fuel cell is improved, and the optimal energy management strategy can be obtained by a function fitting or neural network method.

Given that the total power required by the automobile is B, if the charge capacity of the lithium battery by the fuel cell system is A, B = CP1+ P2-A, wherein C is a proportionality coefficient, the total power required by the automobile is B can be obtained according to the model and the driving mileage of the automobile, and A and C are obtained by acquiring multiple groups of data and fitting; b = P5+ CP4-a, where P5 and P3 are made equal, and the value of P4 can be found since P5, C, a and B are known.

The neural network takes the running parameters and power of the whole vehicle as input, and obtains the output power P4 by setting the structure and parameters of the neural network. The function fitting is that the power of the whole vehicle can be regarded as a linear function of the power of the lithium battery and the fuel battery, a proportionality coefficient is set, then the proportionality coefficient is obtained through fitting, and then the power P4 is obtained.

S7: and the new power distribution strategy is remotely updated into the energy management controller through the cloud platform, so that the hydrogen consumption of the fuel cell on the fixed road section is reduced, and the economical efficiency of the fuel cell automobile is improved.

S8: in particular, the GPS is used for collecting the current road condition, when the road is congested and the traffic lights are more, the fuel cell is controlled to discharge the lithium battery to the low-level SOC, the fuel cell is prevented from being frequently turned on and turned off when the idle working condition is maintained for a long time when the traffic lights are waited, and the service life of the fuel cell can be prolonged.

Fig. 2 shows a schematic diagram of a fuel cell vehicle energy system.

According to the implementation method, when the fuel cell automobile is detected to run on a fixed route within a certain period of time, the energy management strategy is automatically adjusted by analyzing the whole automobile data, and the hydrogen consumption is reduced. When the congestion of the running road section is detected, the energy management strategy is adjusted, namely the SOC of the lithium battery is discharged to a lower level, and then the fuel battery is enabled to continuously charge the lithium battery at a high-efficiency point, so that the phenomenon that the service life of the fuel battery is attenuated due to frequent startup and shutdown of the fuel battery is avoided.

The embodiment also discloses a fuel cell vehicle energy management device, which comprises: the query module is used for querying a corresponding historical driving record in a historical database based on the acquired vehicle driving path;

the calculation module is used for calculating to obtain a target output power P4 of the lithium battery and a target output power P5 of the fuel battery according to the total output power P1 of the lithium battery, the total output power P2 of the fuel battery and the equivalent total output power P3;

The electronic device disclosed by the embodiment comprises a memory and a processor. The memory is to store non-transitory computer readable instructions. In particular, the memory may include one or more computer program products that may include various forms of computer-readable storage media, such as volatile memory and/or non-volatile memory. The volatile memory may include, for example, random Access Memory (RAM), cache memory (cache), and/or the like. The non-volatile memory may include, for example, read Only Memory (ROM), hard disk, flash memory, etc.

The processor may be a Central Processing Unit (CPU) or other form of processing unit having data processing capabilities and/or instruction execution capabilities, and may control other components in the electronic device to perform desired functions. In one embodiment of the present disclosure, the processor is configured to execute the computer readable instructions stored in the memory, so that the electronic device performs all or part of the foregoing steps of the method for managing energy of a fuel cell vehicle according to the embodiments of the present disclosure.

Those skilled in the art should understand that, in order to solve the technical problem of how to obtain a good user experience, the present embodiment may also include well-known structures such as a communication bus, an interface, and the like, and these well-known structures should also be included in the protection scope of the present disclosure.

Fig. 3 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure. There is shown a schematic diagram of a structure suitable for implementing an electronic device in an embodiment of the present disclosure. The electronic device shown in fig. 3 is only an example, and should not bring any limitation to the functions and the scope of use of the embodiments of the present disclosure.

As shown in fig. 3, the electronic device may include a processing means (e.g., a central processing unit, a graphic processor, etc.) that can perform various appropriate actions and processes according to a program stored in a Read Only Memory (ROM) or a program loaded from a storage means into a Random Access Memory (RAM). In the RAM, various programs and data necessary for the operation of the electronic apparatus are also stored. The processing device, the ROM, and the RAM are connected to each other through a bus. An input/output (I/O) interface is also connected to the bus.

Generally, the following devices may be connected to the I/O interface: input means including, for example, a sensor or a visual information acquisition device; output devices including, for example, display screens and the like; storage devices including, for example, magnetic tape, hard disk, etc.; and a communication device. The communication means may allow the electronic device to communicate wirelessly or by wire with other devices, such as edge computing devices, to exchange data. While fig. 3 illustrates an electronic device having various means, it is to be understood that not all illustrated means are required to be implemented or provided. More or fewer devices may alternatively be implemented or provided.

In particular, according to an embodiment of the present disclosure, the processes described above with reference to the flowcharts may be implemented as computer software programs. For example, embodiments of the present disclosure include a computer program product comprising a computer program carried on a non-transitory computer readable medium, the computer program containing program code for performing the method illustrated by the flow chart. In such an embodiment, the computer program may be downloaded and installed from a network via the communication means, or installed from a storage means, or installed from a ROM. When the computer program is executed by a processing device, all or part of the steps of the energy management method of the fuel cell automobile of the embodiment of the disclosure are executed.

For the detailed description of the present embodiment, reference may be made to the corresponding descriptions in the foregoing embodiments, which are not repeated herein.

A computer-readable storage medium according to an embodiment of the present disclosure has non-transitory computer-readable instructions stored thereon. When executed by a processor, the non-transitory computer readable instructions perform all or part of the steps of the fuel cell vehicle energy management method of the embodiments of the present disclosure as described above.

The computer-readable storage media include, but are not limited to: optical storage media (e.g., CD-ROMs and DVDs), magneto-optical storage media (e.g., MOs), magnetic storage media (e.g., magnetic tapes or removable disks), media with built-in rewritable non-volatile memory (e.g., memory cards), and media with built-in ROMs (e.g., ROM cartridges).

The basic principles of the present disclosure have been described above in connection with specific embodiments, but it should be noted that advantages, effects, and the like, mentioned in the present disclosure are only examples and not limitations, and should not be considered essential to the various embodiments of the present disclosure. Furthermore, the foregoing disclosure of specific details is for the purpose of illustration and description and is not intended to be limiting, since the disclosure is not intended to be limited to the specific details so described.

In the present disclosure, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions, and the block diagrams of devices, apparatuses, devices, systems, and apparatuses herein referred to are used merely as illustrative examples and are not intended to require or imply that the connections, arrangements, configurations, etc. must be made in the manner shown in the block diagrams. These devices, apparatuses, devices, systems may be connected, arranged, configured in any manner, as will be appreciated by those skilled in the art. Words such as "including," "comprising," "having," and the like are open-ended words that mean "including, but not limited to," and are used interchangeably therewith. As used herein, the words "or" and "refer to, and are used interchangeably with, the word" and/or, "unless the context clearly dictates otherwise. The word "such as" is used herein to mean, and is used interchangeably with, the phrase "such as but not limited to".

Also, as used herein, "or" as used in a listing of items beginning with "at least one" indicates a separate listing, such that, for example, a listing of "at least one of a, B, or C" means a or B or C, or AB or AC or BC, or ABC (i.e., a and B and C). Furthermore, the phrase "exemplary" does not mean that the described example is preferred or better than other examples.

It should also be noted that, in the systems and methods of the present disclosure, various components or steps may be decomposed and/or recombined. Such decomposition and/or recombination should be considered as equivalents of the present disclosure.

Various changes, substitutions and alterations to the techniques described herein may be made without departing from the techniques of the teachings as defined by the appended claims. Moreover, the scope of the claims of the present disclosure is not limited to the particular aspects of the process, machine, manufacture, composition of matter, means, methods and acts described above. Processes, machines, manufacture, compositions of matter, means, methods, or acts, presently existing or later to be developed that perform substantially the same function or achieve substantially the same result as the corresponding aspects described herein may be utilized. Accordingly, the appended claims are intended to include within their scope such processes, machines, manufacture, compositions of matter, means, methods, or acts.

The previous description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present disclosure. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects without departing from the scope of the disclosure. Thus, the present disclosure is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

The foregoing description has been presented for purposes of illustration and description. Furthermore, this description is not intended to limit embodiments of the disclosure to the form disclosed herein. While a number of example aspects and embodiments have been discussed above, those of skill in the art will recognize certain variations, modifications, alterations, additions and sub-combinations thereof.

Claims

1. A fuel cell vehicle energy management method, comprising:

inquiring a corresponding historical driving record in a historical database based on the acquired driving path of the vehicle;

obtaining the total running time t of the vehicle, and obtaining the equivalent total output power P3 of the fuel cell at a high efficiency point according to the total running time;

2. The fuel cell vehicle energy management method according to claim 1, wherein the managing vehicle energy based on the lithium battery target output power P4 and the fuel cell target output power P5 includes:

3. The fuel cell vehicle energy management method according to claim 1, wherein the step of querying the history database for the corresponding history travel record based on the acquired vehicle travel path is preceded by:

and saving the vehicle running record to a historical database.

4. The fuel cell vehicle energy management method of claim 3, wherein saving the vehicle travel record to a historical database comprises:

5. The fuel cell vehicle energy management method according to claim 4, wherein the querying of the history database for the corresponding history traveling record based on the acquired vehicle traveling path includes:

6. The fuel cell vehicle energy management method according to claim 1, wherein the calculating a lithium battery target output power P4 and a fuel cell target output power P5 according to the lithium battery total output power P1, the fuel cell total output power P2 and the equivalent total output power P3 includes:

7. The fuel cell vehicle energy management method according to claim 1, wherein the lithium battery target output power P4 and the fuel cell target output power P5 are calculated according to the lithium battery total output power P1, the fuel cell total output power P2 and the equivalent total output power P3,

8. A fuel cell vehicle energy management device, comprising:

the query module is used for querying a corresponding historical driving record in a historical database based on the acquired vehicle driving path;

9. An electronic device, characterized in that the electronic device comprises:

at least one processor; and the number of the first and second groups,

the memory stores instructions executable by the at least one processor to cause the at least one processor to perform the fuel cell vehicle energy management method of any one of claims 1-7.

10. A computer-readable storage medium storing computer instructions for causing a computer to perform the fuel cell vehicle energy management method of any one of claims 1 to 7.