CN117565852A - Energy management method, system, terminal and medium for hybrid vehicle - Google Patents
Energy management method, system, terminal and medium for hybrid vehicle Download PDFInfo
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- 238000007726 management method Methods 0.000 title claims abstract description 36
- 238000004590 computer program Methods 0.000 claims description 12
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- 230000009194 climbing Effects 0.000 abstract description 7
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
- B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
- B60W20/15—Control strategies specially adapted for achieving a particular effect
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
- B60W40/02—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to ambient conditions
- B60W40/06—Road conditions
- B60W40/076—Slope angle of the road
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2552/00—Input parameters relating to infrastructure
- B60W2552/15—Road slope, i.e. the inclination of a road segment in the longitudinal direction
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Abstract
The invention provides an energy management method, a system, a terminal and a medium for a hybrid vehicle, wherein the method comprises the following steps: acquiring vehicle parameters of the hybrid vehicle and road section information of a driven road section; determining the gradient condition of the driven road section according to the road section information and the vehicle parameters; and adjusting the driving strategy of the hybrid vehicle according to the gradient condition of the driven road section. According to the method, the gradient condition of the driven road section is determined through the vehicle parameters of the hybrid vehicle and the road section information of the driven road section, and then the driving strategy of the hybrid vehicle is adjusted according to the gradient condition of the driven road section, so that the hybrid vehicle can have sufficient power. According to the method, a driving strategy is adjusted according to the gradient condition of a driven road section so as to ensure that the hybrid vehicle can perform travel scenes such as mountain climbing and the like by sufficient power.
Description
Technical Field
The invention relates to the field of automobiles, in particular to an energy management method, an energy management system, an energy management terminal and an energy management medium for hybrid vehicles.
Background
The new energy automobile is an automobile which adopts unconventional automobile fuel as a power source (or adopts conventional automobile fuel and a novel automobile-mounted power device) and integrates the advanced technology in the aspects of power control and driving of the automobile, and the formed technical principle is advanced, and the automobile has a new technology and a new structure. The new energy automobile comprises a pure electric automobile, a range-extended electric automobile, a hybrid electric automobile, a fuel cell electric automobile, a hydrogen engine automobile and the like. Energy management is a core technology of new energy automobiles as a hot spot and a difficult point of research in the field of new energy automobiles, and directly determines the economical efficiency, the dynamic property and the driving property of the automobiles. Because the uncertainty of the actual driving situation directly influences the design difficulty and control precision of energy management, cross-domain fusion is needed, and an energy management strategy with high efficiency and strong adaptability is developed.
Currently, hybrid vehicle energy management strategies are mainly still purely electric priority strategies. And when the electric quantity is sufficient, the electric quantity is preferentially used, and when the electric quantity is insufficient, the engine is used for driving the vehicle. When facing the travel scene of mountain climbing, because the electric quantity is consumed out too early, the problem of limited power of the vehicle due to insufficient electric quantity can occur.
Disclosure of Invention
In view of the above drawbacks of the prior art, the present invention provides an energy management method, system, terminal, and medium for a hybrid vehicle, so as to solve the technical problem of insufficient power of the hybrid vehicle during hill climbing in the prior art.
To achieve the above and other related objects, the present invention provides an energy management method for a hybrid vehicle, comprising:
acquiring vehicle parameters of the hybrid vehicle and road section information of a driven road section;
determining the gradient condition of the driven road section according to the road section information and the vehicle parameters;
and adjusting the driving strategy of the hybrid vehicle according to the gradient condition of the driven road section.
In an example of the present invention, determining a gradient of a traveling road according to road information and vehicle parameters includes:
dividing the driven road section into a plurality of sub road sections;
judging the road condition of each sub-road section according to the road section information;
when the road condition of the sub-road section is a slope road, calculating the road section gradient information of the sub-road section according to the vehicle parameters and the road section information;
and determining the gradient condition of the driven road section according to the road section gradient information of all the sub road sections.
In an example of the present invention, the link information includes barometric pressure information for all the traveled links; judging the road condition of each sub-road section according to the road section information comprises the following steps: for each of the sub-road segments,
acquiring the highest elevation and the lowest elevation of the sub-road section according to the atmospheric pressure information;
acquiring an altitude difference according to the highest altitude and the lowest altitude;
judging whether the altitude difference reaches a preset altitude threshold value or not;
if the altitude difference reaches the altitude threshold value, the road condition of the sub road section is a slope road; and if the altitude difference does not reach the altitude threshold value, the road condition of the sub-road section is a flat road.
In one example of the invention, the vehicle parameters include chassis grade information; if the sub-road section is a slope road, calculating the road section gradient information of the sub-road section according to the vehicle parameters and the road section information comprises:
acquiring the corresponding gradient of the sub-road section according to the chassis gradient information;
and judging the road section gradient information of the sub road section as an ascending road or a descending road according to the gradient.
In one example of the present invention, determining the gradient of the traveled road segment according to the road segment gradient information of all the sub road segments includes:
counting the first number of the sub-road sections as ascending roads and the second number of the sub-road sections as descending roads according to the road section gradient information of each sub-road section;
judging the gradient condition of the driven road section according to the first quantity and the second quantity:
if the sum of the first quantity and the second quantity is larger than a preset first threshold value and the first quantity is larger than the sum of the second quantity and a preset second threshold value, taking the uphill road as the gradient condition of the driven road section;
if the sum of the first quantity and the second quantity is larger than a preset first threshold value and the second quantity is larger than the sum of the first quantity and a preset third threshold value, taking the downhill road as the gradient condition of the driven road section;
otherwise, the flat slope road is used as the slope condition of the driven road section.
In an example of the present invention, adjusting the driving strategy of the hybrid vehicle according to the gradient of the driven road section includes:
when the gradient condition is a flat road or a downhill road, a driving strategy of the hybrid vehicle is saved;
and when the gradient condition is an upward slope, adjusting the driving strategy of the hybrid vehicle to ensure the power.
In an example of the present invention, if the gradient condition is an uphill road, adjusting the driving strategy guarantee power of the hybrid vehicle includes:
increasing the discharge balance point of the hybrid vehicle;
lowering a starting threshold of the hybrid vehicle engine;
the running mode of the hybrid vehicle is changed to ensure power.
In one example of the present invention, there is also provided an energy management system for a hybrid vehicle comprising:
the data acquisition module is used for acquiring vehicle parameters of the hybrid vehicle and road section information of a driven road section;
the gradient judging module is used for confirming the gradient condition of the driven road section according to the road section information and the vehicle parameters;
and the strategy adjustment module is used for adjusting the driving strategy of the hybrid vehicle according to the gradient condition of the driven road section.
In an example of the present invention, there is also provided a vehicle-mounted terminal, including:
one or more processors;
and a storage device for storing one or more programs that, when executed by the one or more processors, cause the in-vehicle terminal to implement the energy management method for a hybrid vehicle as set forth in any one of the above.
In an example of the present invention, there is also provided a computer-readable storage medium, characterized in that a computer program is stored thereon, which when executed by a processor of a computer, causes the computer to execute the energy management method for a hybrid vehicle as set forth in any one of the above.
The invention provides an energy management method, system, terminal and medium for a hybrid vehicle. According to the method, a driving strategy is adjusted according to the gradient condition of a driven road section so as to ensure that the hybrid vehicle can perform travel scenes such as mountain climbing and the like by sufficient power.
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In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a method of energy management for a hybrid vehicle in accordance with an embodiment of the present invention;
FIG. 2 is a flow chart illustrating a method for determining a grade of a road segment according to an embodiment of the present invention;
FIG. 3 is a flow chart of determining whether a sub-road segment is a slope road according to an embodiment of the present invention;
FIG. 4 is a flowchart of calculating road segment gradient information of an operator road segment according to an embodiment of the present invention;
FIG. 5 is a block diagram of an energy management system for a hybrid vehicle in accordance with an embodiment of the present invention;
fig. 6 is a schematic diagram of a computer system of the vehicle-mounted terminal according to an embodiment of the invention.
Detailed Description
Other advantages and effects of the present invention will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present invention with reference to specific examples. The invention may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present invention. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict. It is also to be understood that the terminology used in the examples of the invention is for the purpose of describing particular embodiments only, and is not intended to limit the scope of the invention. The test methods in the following examples, in which specific conditions are not noted, are generally conducted under conventional conditions or under conditions recommended by the respective manufacturers.
Where numerical ranges are provided in the examples, it is understood that unless otherwise stated herein, both endpoints of each numerical range and any number between the two endpoints are significant both in the numerical range. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs and to which this invention belongs, and any method, apparatus, or material of the prior art similar or equivalent to the methods, apparatus, or materials described in the examples of this invention may be used to practice the invention.
It should be understood that the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like are used in this specification for descriptive purposes only and not for purposes of limitation, and that the invention may be practiced without materially departing from the novel teachings and without departing from the scope of the invention.
Referring to fig. 1 to 6, an energy management method, a system, a terminal and a medium for a hybrid vehicle are disclosed, wherein the method can determine the gradient condition of a driven road section through vehicle parameters of the hybrid vehicle and road section information of the driven road section in a scene without using navigation, and then adjust the driving strategy of the hybrid vehicle according to the gradient condition of the driven road section, so as to ensure that the hybrid vehicle can have sufficient power, solve the technical problem of insufficient power of the hybrid vehicle in the prior art when climbing, ensure that the hybrid vehicle can perform travel scenes such as mountain climbing and the like by sufficient power, and adjust the driving strategy of the hybrid vehicle according to the driving path when no navigation information exists.
Referring to fig. 1, the method includes steps S1 to S3, which are described in detail as follows:
step S1, acquiring vehicle parameters of the hybrid vehicle and road section information of a driven road section.
In one embodiment of the present invention, the vehicle parameters include chassis gradient information and barometric pressure information for a road segment on which the road segment information has been traveled. The barometric pressure information is used to obtain altitude, so that the altitude difference is used to determine whether the sub-section is a slope. The chassis gradient information is used to confirm whether the slope is an uphill slope or a downhill slope. In the whole process, parameters of a driving path are not needed, only the road section information of the driving road section is used, and the road section information can be collected in the driving process of the vehicle.
And S2, determining the gradient condition of the driven road section according to the road section information and the vehicle parameters.
Referring to fig. 2, determining the gradient of the driven road section according to the road section information and the vehicle parameters in step S2 includes steps S21 to S24, which are described in detail as follows:
step S21, dividing the driven road section into a plurality of sub road sections.
Step S22, judging the road condition of each sub-road section according to the road section information.
Referring to fig. 3, the step S22 of determining the road condition of each sub-link according to the link information includes steps S221 to S224, and for each sub-link, the following details are given:
step S221, obtaining the highest elevation and the lowest elevation of the sub-road section according to the atmospheric pressure information;
step S222, obtaining an altitude difference according to the highest altitude and the lowest altitude;
step S223, judging whether the altitude difference reaches a preset altitude threshold;
step S224, if the altitude difference reaches the altitude threshold, the road condition of the sub-road section is a slope road; and if the altitude difference does not reach the altitude threshold value, the road condition of the sub-road section is a flat road.
In one embodiment of the present invention, the highest altitude and the lowest altitude of each sub-link are obtained according to the barometric pressure information, thereby obtaining the altitude difference of each sub-link. And comparing the altitude difference with a preset altitude threshold value to further judge whether the road condition of each sub-road section is a gradient, and if the altitude difference reaches the preset altitude threshold value, judging that the road condition of the corresponding sub-road section is a gradient. In the process, the sub-road section of which the road condition is a slope road is selected for subsequent judgment.
In step S23, when the road condition of the sub-road segment is a slope road, the road segment gradient information of the sub-road segment is calculated according to the vehicle parameters and the road segment information.
Referring to fig. 4, if the sub-road segment is a slope road in step S23, calculating the road segment gradient information of the sub-road segment according to the vehicle parameters and the road segment information includes steps S231 to S232, which are described in detail as follows:
step S231, acquiring the corresponding gradient of the sub-road section according to the chassis gradient information;
and S232, judging whether the road section gradient information of the sub road section is an ascending road or a descending road according to the gradient.
In an embodiment of the present invention, the gradient of the corresponding sub-road section is obtained according to the chassis gradient information of the hybrid vehicle when the sub-road section of the road condition is a slope. And determining that the corresponding sub-road section is an ascending road or a descending road according to the gradient of the sub-road section of which each road condition is a sloping road, so as to judge the gradient condition of the driven road section according to the road section gradient information of each sub-road section.
Step S24, determining the gradient condition of the driven road section according to the road section gradient information of all the sub road sections, and determining the gradient condition of the driven road section as an ascending road, a flat road or a descending road, wherein the following details are as follows:
and counting the first number of the sub-road sections as the ascending road and the second number of the sub-road sections as the descending road according to the road section gradient information of each sub-road section.
And judging the gradient condition of the driven road section according to the first quantity and the second quantity.
And if the sum of the first quantity and the second quantity is larger than a preset first threshold value and the first quantity is larger than the sum of the second quantity and a preset second threshold value, taking the uphill road as the gradient condition of the driven road section. And when the number of the slopes in the sub-road section is larger than the set slope threshold value and the number of the upward slopes in the sub-road section is larger than the number of the downward slopes by a set second threshold value, determining the driven road section as the upward slopes. When x1+x2> N1 and x1> x2+n2 (where X1 is a first number, X2 is a second number, N1 is a first threshold, and N2 is a second threshold), the traveled road segment is an uphill road. The first threshold value N1 and the second threshold value N2 are set according to parameters such as vehicle power and power shortage.
And if the sum of the first quantity and the second quantity is larger than a preset first threshold value and the second quantity is larger than the sum of the first quantity and a preset third threshold value, taking the downhill road as the gradient condition of the driven road section. And when the number of the slopes in the sub-road section is larger than the set slope threshold value and the number of the downslopes in the sub-road section is larger than the number of the uphill roads by a set second difference value, determining the driven road section as the downhill road. When x1+x2> N1 and x2> x1+n3 (where X1 is a first number, X2 is a second number, N1 is a first threshold, and N3 is a third threshold), the traveled road segment is a downhill road. The first threshold value N1 and the third threshold value N3 may be set according to parameters such as vehicle power and power shortage.
Otherwise, the flat slope road is used as the slope condition of the driven road section. When the first number and the second number do not satisfy the two conditions, for example, when the number of the slope road in the sub road section does not exceed a first threshold value x1+x2< =n1 (where X1 is the first number, X2 is the second number, and N1 is the first threshold value), the driven road section is regarded as a flat slope road.
And step S3, adjusting the driving strategy of the hybrid vehicle according to the gradient condition of the driven road section.
Referring to fig. 5, in step S3, adjusting the driving strategy of the hybrid vehicle according to the gradient of the driven road section includes steps S31 to S32, which are described in detail as follows:
step S31, when the gradient condition is a flat road or a downhill road, the driving strategy of the hybrid vehicle is saved. When the gradient condition of the already-driven road section is a flat slope road or a downhill road, the hybrid vehicle can be considered to be not in an uphill scene, and the hybrid vehicle has little requirement for power, so that the existing driving strategy is saved.
And step S32, when the gradient condition is an upward slope, the driving strategy of the hybrid vehicle is adjusted to ensure the power. When the gradient condition of the already-driven road section is an uphill road, the hybrid vehicle can be considered to be in a scene of an uphill road, larger kinetic energy is needed, and because the already-driven road section of the uphill road consumes a large amount of electric quantity, the power of the hybrid vehicle is reduced due to insufficient electric quantity, and the driving strategy of the power can be ensured by adjustment. The adjusting of the driving strategy of the hybrid vehicle specifically includes: and (3) increasing the discharge balance point of the hybrid vehicle, reducing the starting threshold value of the engine of the hybrid vehicle, and changing the running mode of the hybrid vehicle to ensure the power.
In an embodiment of the present invention, the hybrid vehicle adjusts the driving strategy according to the gradient of the road section already driven. When the driven road section is an uphill road, the electric quantity of the hybrid vehicle cannot be consumed too quickly by improving the discharge balance point of the hybrid vehicle, so that the power of the motor cannot be weakened due to too low electric quantity in the subsequent driving, and the hybrid vehicle has sufficient power. The starting threshold of the engine is reduced by the hybrid vehicle, so that the engine of the hybrid vehicle participates in driving more, on one hand, the electric quantity of the hybrid vehicle is reduced, the electric quantity is supplemented, and on the other hand, the engine and the motor are sold to drive the vehicle at the same time, so that the power of the hybrid vehicle is increased. The hybrid vehicle changes the running mode, for example, from the economy mode, the normal mode, or the like to the sport mode, or the like, and increases the power of the hybrid vehicle so that the hybrid vehicle is sufficiently powered to make a hill climbing with sufficient power in the following stroke.
In an example of the present invention, there is also provided an energy management system 500 for a hybrid vehicle, as shown in fig. 5, comprising: a data acquisition module 510, configured to acquire vehicle parameters of the hybrid vehicle and road section information of a driven road section; the gradient judging module 520 is configured to confirm the gradient condition of the driven road section according to the road section information and the vehicle parameters; the strategy adjustment module 530 is configured to adjust a driving strategy of the hybrid vehicle according to a gradient condition of the driven road section.
It should be noted that, the energy management method and system for a hybrid vehicle provided in the foregoing embodiments belong to the same concept, and the specific manner in which the operations of the respective modules are performed has been described in the method embodiments, which are not repeated herein. In practical applications, the energy management system for a hybrid vehicle provided in the above embodiment may be configured to distribute the functions as required by different functional modules, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above, which is not limited herein.
The embodiment of the application also provides a vehicle-mounted terminal, which comprises: one or more processors; and a storage device for storing one or more programs that, when executed by the one or more processors, cause the in-vehicle terminal to implement the energy management method for a hybrid vehicle as set forth in any one of the above.
Fig. 6 shows a schematic diagram of a computer system suitable for use in implementing the vehicle-mounted terminal of the embodiments of the present application. It should be noted that, the computer system of the vehicle-mounted terminal shown in fig. 6 is only one embodiment, and should not impose any limitation on the functions and application scope of the embodiments of the present application.
As shown in fig. 6, the computer system includes a central processing unit (Central Processing Unit, CPU) 601 which can perform various appropriate actions and processes according to a program stored in a Read-Only Memory (ROM) 602 or a program loaded from a storage section 608 into a random access Memory (Random Access Memory, RAM) 603, for example, performing the method described in the above embodiment. In the RAM 603, various programs and data required for system operation are also stored. The CPU 601, ROM 602, and RAM 603 are connected to each other through a bus 604. An Input/Output (I/O) interface 605 is also connected to bus 604.
The following components are connected to the I/O interface 605: an input portion 606 including a keyboard, mouse, etc.; an output portion 607 including a Cathode Ray Tube (CRT), a liquid crystal display (Liquid Crystal Display, LCD), and a speaker, etc.; a storage section 608 including a hard disk and the like; and a communication section 609 including a network interface card such as a LAN (Local AreaNetwork ) card, a modem, or the like. The communication section 609 performs communication processing via a network such as the internet. The drive 610 is also connected to the I/O interface 605 as needed. Removable media 611 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is installed as needed on drive 610 so that a computer program read therefrom is installed as needed into storage section 608.
In particular, according to embodiments of the present application, the processes described above with reference to flowcharts may be implemented as computer software programs. For example, embodiments of the present application include a computer program product comprising a computer program embodied on a computer readable medium, the computer program comprising a computer program for performing the method shown in the flowchart. In such an embodiment, the computer program may be downloaded and installed from a network through the communication portion 609, and/or installed from the removable medium 611. When executed by a Central Processing Unit (CPU) 601, performs the various functions defined in the system of the present application.
It should be noted that, the computer readable medium shown in the embodiments of the present application may be a computer readable signal medium or a computer readable storage medium, or any combination of the two. The computer readable storage medium may be, for example, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of the computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-Only Memory (ROM), an erasable programmable read-Only Memory (Erasable Programmable Read Only Memory, EPROM), flash Memory, an optical fiber, a portable compact disc read-Only Memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the present application, a computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, with a computer-readable computer program embodied therein. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. A computer program embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wired, etc., or any suitable combination of the foregoing.
The flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present application. Where each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams or flowchart illustration, and combinations of blocks in the block diagrams or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The units involved in the embodiments of the present application may be implemented by means of software, or may be implemented by means of hardware, and the described units may also be provided in a processor. Wherein the names of the units do not constitute a limitation of the units themselves in some cases.
Another aspect of the present application also provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor of a computer, causes the computer to perform the energy management method for a hybrid vehicle as described above. The computer-readable storage medium may be contained in the in-vehicle terminal described in the above embodiment or may exist alone without being incorporated in the in-vehicle terminal.
The invention provides an energy management method, system, terminal and medium for a hybrid vehicle. Therefore, the invention effectively overcomes some practical problems in the prior art, thereby having high utilization value and use significance. The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
Claims (10)
1. An energy management method for a hybrid vehicle, comprising:
acquiring vehicle parameters of the hybrid vehicle and road section information of a driven road section;
determining the gradient condition of the driven road section according to the road section information and the vehicle parameters; and adjusting the driving strategy of the hybrid vehicle according to the gradient condition of the driven road section.
2. The energy management method for a hybrid vehicle according to claim 1, wherein the determining a gradient condition of the traveled road section from the road section information and the vehicle parameter includes:
dividing the driven road section into a plurality of sub road sections;
judging the road condition of each sub-road section according to the road section information;
when the road condition of the sub road section is a slope road, calculating road section gradient information of the sub road section according to the vehicle parameters and the road section information;
and determining the gradient condition of the driven road section according to the road section gradient information of all the sub road sections.
3. The energy management method for a hybrid vehicle according to claim 2, wherein the link information includes atmospheric pressure information of all the traveled links; judging the road condition of each sub-road section according to the road section information comprises the following steps: for each of the sub-segments,
acquiring the highest elevation and the lowest elevation of the sub-road section according to the atmospheric pressure information;
acquiring an altitude difference according to the highest altitude and the lowest altitude;
judging whether the altitude difference reaches a preset altitude threshold value or not;
if the altitude difference reaches the altitude threshold value, the road condition of the sub road section is the slope road; and if the altitude difference does not reach the altitude threshold value, the road condition of the sub-road section is a flat road.
4. The energy management method for a hybrid vehicle of claim 2, wherein the vehicle parameters include chassis grade information; if the sub-road section is a slope road, calculating the road section gradient information of the sub-road section according to the vehicle parameter and the road section information includes:
acquiring the corresponding gradient of the sub-road section according to the chassis gradient information;
and judging whether the road section gradient information of the sub road section is an ascending road or a descending road according to the gradient.
5. The energy management method for a hybrid vehicle according to claim 2, wherein the determining a gradient condition of a traveled road segment from the road segment gradient information of all the sub road segments includes:
counting the first number of the sub-road sections as ascending roads and the second number of the sub-road sections as descending roads according to the road section gradient information of each sub-road section;
judging the gradient condition of the driven road section according to the first quantity and the second quantity:
if the sum of the first quantity and the second quantity is larger than a preset first threshold value, and the first quantity is larger than the sum of the second quantity and a preset second threshold value, taking an uphill road as the gradient condition of the driven road section;
if the sum of the first quantity and the second quantity is larger than a preset first threshold value and the second quantity is larger than the sum of the first quantity and a preset third threshold value, taking a downhill road as the gradient condition of the driven road section;
otherwise, the flat slope road is used as the slope condition of the driven road section.
6. The energy management method for a hybrid vehicle of claim 1, wherein said adjusting a drive strategy of said hybrid vehicle based on said grade condition of said traveled road segment comprises:
when the gradient condition is a flat slope road or a downhill slope road, the driving strategy of the hybrid vehicle is saved;
and when the gradient condition is an upward gradient road, adjusting the driving strategy of the hybrid vehicle to ensure power.
7. The energy management method for a hybrid vehicle of claim 6, wherein said adjusting the drive strategy assurance power of the hybrid vehicle if the grade condition is an uphill road comprises:
increasing a discharge balance point of the hybrid vehicle;
lowering a start threshold of the hybrid vehicle engine;
and changing the running mode of the hybrid vehicle to ensure power.
8. An energy management system for a hybrid vehicle, comprising:
the data acquisition module is used for acquiring vehicle parameters of the hybrid vehicle and road section information of a driven road section;
the gradient judging module is used for confirming the gradient condition of the driven road section according to the road section information and the vehicle parameters;
and the strategy adjustment module is used for adjusting the driving strategy of the hybrid vehicle according to the gradient condition of the driven road section.
9. A vehicle-mounted terminal, characterized in that the vehicle-mounted terminal comprises:
one or more processors;
storage means for storing one or more programs that, when executed by the one or more processors, cause the in-vehicle terminal to implement the energy management method for a hybrid vehicle of any of claims 1-7.
10. A computer-readable storage medium, having stored thereon a computer program which, when executed by a processor of a computer, causes the computer to perform the energy management method for a hybrid vehicle according to any one of claims 1 to 7.
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| CN202311712091.7A CN117565852A (en) | 2023-12-13 | 2023-12-13 | Energy management method, system, terminal and medium for hybrid vehicle |
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| CN202311712091.7A CN117565852A (en) | 2023-12-13 | 2023-12-13 | Energy management method, system, terminal and medium for hybrid vehicle |
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