CN115158093A - Energy management method and device for new energy vehicle - Google Patents

Energy management method and device for new energy vehicle Download PDF

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Publication number
CN115158093A
CN115158093A CN202210711803.2A CN202210711803A CN115158093A CN 115158093 A CN115158093 A CN 115158093A CN 202210711803 A CN202210711803 A CN 202210711803A CN 115158093 A CN115158093 A CN 115158093A
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China
Prior art keywords
road section
soc
current
median
vehicle
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CN202210711803.2A
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Inventor
于长虹
张强
刘元治
霍海涛
牟象乾
刘上平
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FAW Group Corp
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FAW Group Corp
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Priority to CN202210711803.2A priority Critical patent/CN115158093A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/12—Recording operating variables ; Monitoring of operating variables
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The embodiment of the disclosure provides an energy management method, an energy management device, a storage medium and electronic equipment for a new energy vehicle, wherein the control method comprises the steps of acquiring running information for a next road section in a target running route of a current vehicle; determining a median SOC control value of the battery based on the driving information; adjusting a powertrain mode of the current vehicle based on the change in the SOC control neutral value. According to the embodiment of the invention, the median SOC at the end of the future road section can be planned by acquiring the information of the future road section, the current median SOC is corrected according to the real-time vehicle speed, and the power assembly mode is automatically adjusted according to the median strategy, so that the energy loss caused by the calculation deviation of the target SOC due to inaccurate information of the future road section can be effectively reduced, the energy management is realized, and the driving mileage of the whole vehicle is further improved.

Description

Energy management method and device for new energy vehicle
Technical Field
The present disclosure relates to the field of energy control of new energy vehicles, and in particular, to a method and an apparatus for energy management of a new energy vehicle, a storage medium, and an electronic device.
Background
The existing energy management technology is continuously upgrading and optimizing in a mode of acquiring navigation future information so as to improve the economy of the whole vehicle. At present, because a navigation system has certain time delay and deviation, the accurate energy management control implemented based on the information has certain inaccuracy. In the prior art, a target SOC is mostly calculated according to future road condition information, and then energy control is performed in a target following or mode management mode, which is a more classical control mode.
Disclosure of Invention
An object of the embodiments of the present disclosure is to provide an energy management method and apparatus for a new energy vehicle, a storage medium, and an electronic device, so as to solve the problems in the prior art.
In order to solve the technical problem, the embodiment of the present disclosure adopts the following technical solutions:
a method of energy management of a new energy vehicle, comprising:
acquiring the driving information aiming at the next road section in the target driving route of the current vehicle;
determining a median SOC control value of the battery based on the running information;
adjusting a powertrain mode of the current vehicle based on the change in the SOC control median.
In some embodiments, the determining a median SOC control value of the battery based on the driving information includes:
acquiring the energy consumption requirement of the current vehicle on the next road section based on the driving information;
determining a first SOC median value of the vehicle at the end of the current road section according to the average speed of the vehicle at the current road section and the average speed of the vehicle at the next road section based on the comparison result of the energy consumption demand and the available energy of the battery;
and determining a third SOC median value at the current moment as the SOC control median value based on the first SOC median value, a second SOC median value of the current vehicle at the beginning of the current road section and the distance of the current vehicle entering the next road section.
In some embodiments, further comprising:
and correcting the third SOC median value according to the current real-time speed of the current vehicle to obtain the SOC control median value.
In some embodiments, the obtaining the energy consumption requirement of the current vehicle on the next road segment based on the driving information includes:
acquiring the average speed of the vehicle on the next road section based on the running information;
and acquiring the energy consumption requirement of the next road section based on the average speed of the next road section.
In some embodiments, the determining a first median SOC value of the vehicle at the end of the current road segment according to the average vehicle speed of the vehicle on the current road segment and the average vehicle speed of the next road segment based on the comparison result of the energy consumption demand and the available energy of the battery includes:
when the energy consumption demand is smaller than the available energy of the battery, if the average vehicle speed of the current road section and the average vehicle speed of the next road section are both higher than a first vehicle speed threshold value, the first median SOC value determined under the condition that the average vehicle speed of the current road section is higher than the average vehicle speed of the next road section is higher than the first median SOC value determined under the condition that the average vehicle speed of the current road section is lower than the average vehicle speed of the next road section.
In some embodiments, further comprising:
if the average vehicle speed of the current road section and the average vehicle speed of the next road section are both lower than a second vehicle speed threshold value, the first SOC median value determined under the condition that the average vehicle speed of the current road section is lower than the average vehicle speed of the next road section is lower than the first SOC median value determined under the condition that the average vehicle speed of the current road section is higher than the average vehicle speed of the next road section; and/or the first SOC median value determined under the condition that the average vehicle speed of the current road section exceeds the average vehicle speed of the next road section by a preset multiple is higher than the first SOC median value determined under the condition that the average vehicle speed of the next road section exceeds the average vehicle speed of the current road section by a preset multiple.
In some embodiments, said adjusting said current powertrain mode based on said change in said SOC control mid-value comprises:
determining an SOC threshold value based on the SOC control median;
and adjusting the powertrain mode of the current vehicle based on the SOC control median value and the SOC threshold value.
The embodiment of the present disclosure also provides an energy management device of a new energy vehicle, which includes:
the acquisition module is used for acquiring the driving information of the next road section in the target driving route of the current vehicle;
the determining module is used for determining a SOC control median value of the battery based on the running information;
and the adjusting module is used for adjusting the powertrain mode of the current vehicle based on the change of the SOC control intermediate value.
The present disclosure also provides a storage medium storing a computer program which, when executed by a processor, implements the steps of any of the above-described methods.
The present disclosure also provides an electronic device comprising at least a memory having a computer program stored thereon, and a processor implementing the steps of any of the above methods when executing the computer program on the memory.
Compared with the prior art, the embodiment of the disclosure can plan the median SOC at the end of the future road section by acquiring the information of the future road section, correct the current median SOC according to the real-time vehicle speed, and automatically adjust the power assembly mode according to the median strategy, so that the energy loss caused by the calculation deviation of the target SOC due to inaccurate information of the future road section can be effectively reduced, the energy management is realized, and the endurance mileage of the whole vehicle is further improved.
The embodiment of the disclosure is suitable for vehicles carrying HEV driving modes and the like, when a driver starts navigation, the vehicle can acquire future road section information from a navigation system in real time, and the power assembly mode is automatically adjusted by processing the future road section information and current vehicle state information, so that the economic management of energy is realized, the energy utilization rate is improved, and the continuous mileage of the whole vehicle is prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments described in the present disclosure, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a new energy vehicle in an embodiment of the present disclosure;
FIG. 2 is a schematic step diagram of an energy management method of a new energy vehicle according to an embodiment of the disclosure;
FIG. 3 is a schematic step diagram of an energy management method of a new energy vehicle according to an embodiment of the disclosure;
FIG. 4 is a schematic step diagram of an energy management method of a new energy vehicle according to an embodiment of the disclosure;
FIG. 5 is a schematic step diagram of an energy management method of a new energy vehicle in an embodiment of the disclosure.
Detailed Description
Various aspects and features of the disclosure are described herein with reference to the drawings.
It will be understood that various modifications may be made to the embodiments of the present application. Accordingly, the foregoing description should not be construed as limiting, but merely as exemplifications of embodiments. Other modifications will occur to those skilled in the art within the scope and spirit of the disclosure.
The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the disclosure and, together with a general description of the disclosure given above, and the detailed description of the embodiments given below, serve to explain the principles of the disclosure.
These and other characteristics of the present disclosure will become apparent from the following description of preferred forms of embodiment, given as non-limiting examples, with reference to the attached drawings.
It should also be understood that, although the present disclosure has been described with reference to some specific examples, a person of skill in the art shall certainly be able to achieve many other equivalent forms of the disclosure, having the characteristics as set forth in the claims and hence all coming within the field of protection defined thereby.
The above and other aspects, features and advantages of the present disclosure will become more apparent in view of the following detailed description when taken in conjunction with the accompanying drawings.
Specific embodiments of the present disclosure are described hereinafter with reference to the accompanying drawings; however, it is to be understood that the disclosed embodiments are merely exemplary of the disclosure that may be embodied in various forms. Well-known and/or repeated functions and structures have not been described in detail so as not to obscure the present disclosure with unnecessary or unnecessary detail. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present disclosure in virtually any appropriately detailed structure.
The specification may use the phrases "in one embodiment," "in another embodiment," "in yet another embodiment," or "in other embodiments," which may each refer to one or more of the same or different embodiments in accordance with the disclosure.
The first embodiment of the disclosure provides an energy management method for a new energy vehicle, where the new energy vehicle may be a hybrid electric vehicle or a pure electric vehicle. In the present embodiment, a hybrid vehicle is taken as an example, where the hybrid vehicle includes an engine 9, a generator 10, a driving motor 11, and a power battery 8, where the engine 9, the generator 10, and the driving motor 11 may be used as a power assembly of the hybrid vehicle, and the hybrid vehicle further has a corresponding control structure, where the control structure includes a Vehicle Control Unit (VCU) 1, a navigation system 2, an ESP3, a Battery Management System (BMS) 4, an engine control system (EMS) 5, a generator control unit (GMCU) 6, and a driving motor control unit (TMCU) 7, where the vehicle control unit 1 is used for calculation and command issue of control logic, and the engine control system 5, the generator control unit 6, and the driving motor control unit 7 belong to devices for executing control commands.
Wherein, the main device's function as follows: the vehicle control unit 1 is used for realizing related logic calculation and sending control instructions to an engine control system (EMS) 5, a generator control unit (GMCU) 6 and a drive motor control unit (TMCU) 7 according to information reported by a navigation system 2, an ESP3 and a Battery Management System (BMS) 4; the navigation system 2 is used for providing a target driving route in real time, acquiring the history of the next road section, current vehicle speed information and the like, and transmitting the history and the current vehicle speed information to the vehicle control unit 1; the battery management system 4 is used for calculating states such as the SOC of the battery 8 and reporting the states to the vehicle control unit 1 in real time; the engine control system 5 is configured to calculate a relevant state of the engine 9, report the relevant state to the vehicle control unit 1 in real time, and control the engine 9 to execute a torque or rotation speed demand sent by the vehicle control unit 1; the generator control unit 7: calculating the relevant state of the generator 10 and reporting to the VCU1 in real time; controlling the engine 10 to implement the torque or speed demand of the VCU1; the motor control unit 8 is configured to calculate a relevant state of the driving motor 11, report the relevant state to the vehicle control unit 1 in real time, and control the driving motor 11 to execute a torque or rotation speed requirement sent by the vehicle control unit 1.
According to the energy management method for the new energy vehicle provided by the embodiment of the disclosure, the exemplary energy management method mainly aims at the management of the hybrid vehicle SOC, and the energy management can be carried out on other vehicles by adopting the same method.
As shown in fig. 2, the energy management method for a new energy vehicle according to an embodiment of the present disclosure includes:
s101, acquiring the driving information of the next road section in the target driving route of the current vehicle.
In this step, the travel information for the next link in the target travel route of the current vehicle is acquired. The target travel route here may be determined by the navigation system 2 of the current vehicle through destination information or the like input by a user, and specifically, after acquiring the destination information, the target travel route may be determined by any means or algorithm. In this way, when the user turns on the navigation system 2 and inputs the destination information, the navigation system 2 determines the target driving route, and further divides the target driving route in the form of road segments according to the target driving route, where the dividing manner of the road segments is not limited, and for example, the target driving route may be divided by using the states of crossroads, congestion degrees, and the like as boundaries.
Further, after the target driving route is divided into road segments, the vehicle is located in a current road segment and is about to drive into a next road segment, for example, the navigation system 2 obtains driving information of the next road segment in the target driving route in real time according to the divided road segments, where the driving information is updated in real time along with the movement process of the vehicle on different road segments, where the driving information provided by the navigation system 2 for the next road segment at least includes information such as a historical average vehicle speed of the next road segment, a real-time average vehicle speed of the current road segment, a length of the next road segment, and a distance to enter the next road segment, and these driving information can represent a state that the vehicle is about to enter into the next road segment in the future.
And S102, determining the SOC control median of the power battery based on the running information.
After the driving information for the next link in the target driving route of the current vehicle is acquired through the above step S101, in this step, the SOC control median of the power battery is determined based on the driving information. Specifically, in this step, the running information obtained by the navigation system 2 of the current vehicle is used to calculate and determine the SOC control median value of the current vehicle at the current time, where the SOC control median value is the electric quantity control value of the power battery 8, and is generally located between a first threshold value and a second threshold value of the power battery 8, where the first threshold value is the SOC critical value of the power battery 8 when the engine 9 needs to be started, the second threshold value is the SOC critical value of the power battery 8 when the power battery 8 needs to be discharged, and the SOC control median value is subsequently used for the adjustment of the subsequent powertrain mode.
Specifically, the embodiment of the disclosure identifies the control SOC median value of each road section by road section, and continuously corrects the control SOC median value according to the real-time working condition, where the advantage of the SOC control median value is that the trend control from the current road section to the next road section is realized without accurately controlling the actual SOC to the target SOC control median value, so as to ensure the energy loss caused by the delay and deviation of the navigation information, and at the same time, continuously corrects the SOC control median value according to the actual vehicle speed, so as to avoid the energy loss caused by the low-speed excessive power generation.
Specifically, as shown in fig. 3, the step S102 further includes:
s201, acquiring the energy consumption requirement of the current vehicle on the next road section based on the driving information.
In this step, based on the driving information, the energy consumption requirement of the current vehicle on the next road section is obtained. In particular, in order to ensure that the current vehicle can travel in the most rational manner on the current road section and on the next road section, it is necessary to evaluate possible energy consumption requirements of the current vehicle on the next road section in order to adjust the powertrain mode. Specifically, as shown in fig. 4, the step S201 further includes:
and S301, acquiring the average speed of the vehicle in the next road section based on the running information.
In this step, the average vehicle speed of the vehicle on the next link is acquired based on the travel information. Specifically, in one embodiment, the average vehicle speed of the next road segment may be obtained by performing a weighted average based on the historical average vehicle speed of the next road segment and the real-time average vehicle speed of the current road segment in combination with the distance information of the next road segment, where the historical average vehicle speed is weighted more when the distance of the next road segment is farther, and the real-time average vehicle speed is weighted more when the distance of the next road segment is closer, so as to avoid the time delay problem caused by the real-time average vehicle speed during the weighting process.
S302, acquiring the energy consumption requirement of the next road section based on the average speed of the next road section.
After the average vehicle speed of the vehicle in the next link is obtained based on the driving information in the above step S302, the energy consumption requirement of the next link is obtained based on the average vehicle speed of the next link in this step. Specifically, the energy consumption requirement of the next road section is calculated and obtained according to an automobile theoretical formula based on the average vehicle speed of the next road section obtained through calculation, wherein the influences of wind resistance and rolling resistance need to be considered in the process of obtaining the energy consumption requirement, and acceleration resistance and slope resistance need not be considered here and can be considered in the subsequent correction link of the SOC control median. Of course, the wind resistance and the rolling resistance can be obtained through formula calculation, and can also be obtained through a bench test.
S202, determining a first SOC median value of the vehicle at the end of the current road section according to the average speed of the vehicle at the current road section and the average speed of the vehicle at the next road section based on the comparison result of the energy consumption demand and the available energy of the power battery.
After the energy consumption requirement of the current vehicle on the next road section is obtained based on the driving information in the above step S201, in this step, a first median SOC value of the vehicle at the end of the current road section is determined according to an average vehicle speed of the vehicle on the current road section and an average vehicle speed of the next road section based on a comparison result of the energy consumption requirement and available energy of the battery. Specifically, the energy consumption requirement of the next road section is firstly compared with the available energy of the power battery 8, where the available energy of the power battery 8 refers to the theoretical total energy that the power battery 8 can release within the allowable range of the life, and is not the actual remaining energy of the power battery 8 at present.
Further, it is determined whether the energy consumption requirement of the next road segment is greater than the available energy of the power battery 8, wherein when the energy consumption requirement is less than the available energy of the power battery 8, that is, the power battery 8 is sufficient to provide energy for the current vehicle to travel the next road segment, further, if the average vehicle speed of the current road segment and the average vehicle speed of the next road segment are both higher than a first vehicle speed threshold, the first median SOC value (e.g. 60%) determined in a case where the average vehicle speed of the current road segment is higher than the average vehicle speed of the next road segment is higher than the first median SOC value (e.g. 55%) determined in a case where the average vehicle speed of the current road segment is lower than the average vehicle speed of the next road segment.
If the average vehicle speed of the current road section and the average vehicle speed of the next road section are both lower than a second vehicle speed threshold, where the second vehicle speed threshold is lower than the first vehicle speed threshold, first, the first median SOC value in this case is generally lower than the corresponding first median SOC value in the last case. Further, the first median SOC value (e.g., 45%) determined in the case where the average vehicle speed of the current link is lower than the average vehicle speed of the next link is lower than the first median SOC value (e.g., 50%) determined in the case where the average vehicle speed of the current link is higher than the average vehicle speed of the next link.
Further, also when both the average vehicle speed of the current link and the average vehicle speed of the next link are lower than the second vehicle speed threshold, the first median SOC value (e.g., 50%) determined in a case where the average vehicle speed of the current link exceeds the average vehicle speed of the next link by a predetermined multiple is higher than the first median SOC value (e.g., 45%) determined in a case where the average vehicle speed of the next link exceeds the average vehicle speed of the current link by a predetermined multiple.
Likewise, when the energy consumption requirement of the next road segment is greater than the available energy of the power battery 8, that is, when the available energy of the power battery 8 is not enough to support the energy consumption requirement of the next road segment, the first median SOC at the end of the current road segment is determined according to the average vehicle speed of the current road segment and the average vehicle speed of the next road segment, which is the same as the above determination. In contrast to the above, the vehicle speed threshold is set to be high and low and the relative magnitude of the first median SOC value is defined, for example, if the average vehicle speed of the current road segment is much higher than the average vehicle speed of the next road segment (by more than a predetermined multiple), the first median SOC value determined here is higher (for example, 65%), because such setting enables more energy to be used for low-speed driving of the current vehicle under the corresponding operating condition.
S203, determining a third SOC median at the current moment as the SOC control median based on the first SOC median, a second SOC median when the current vehicle starts at the current road section and the distance from the current vehicle to the next road section.
After determining the first median SOC value of the vehicle at the end of the current road section according to the average vehicle speed of the vehicle at the current road section and the average vehicle speed of the next road section based on the comparison result of the energy consumption demand and the available energy of the power battery through the above step S202,
in this step, a third median SOC value at the current time is determined as the median SOC control value based on the first median SOC value, a second median SOC value of the current vehicle at the beginning of the current road section, and a distance from the current vehicle to the next road section.
Specifically, a third SOC median value at the current time is calculated and obtained in real time according to the information, such as the first SOC median value obtained by calculation, the second SOC median value at the beginning of the current road section of the current vehicle, and the distance from the current vehicle to the next road section, where the second SOC median value is the SOC median value at the end of the previous road section obtained by calculation during the driving process of the current vehicle on the previous road section, that is, the SOC median value at the beginning of the current road section of the current vehicle, for example, the length of the current road section is 2000 meters, the distance from the current vehicle to the next road section is 1000 meters, the second SOC median value at the beginning of the current road section of the current vehicle is 48%, the first SOC median value at the end of the current road section is 54%, and the second SOC median value at the current time (that is, at a position 1000 meters away from the next road section) of the current vehicle is obtained based on the above data and is 51%.
In addition, the method further comprises the following steps: and correcting the third SOC median value according to the current real-time speed of the current vehicle to obtain the SOC control median value.
Specifically, after determining a third SOC median at the current time as the SOC control median based on the first SOC median, the second SOC median at the beginning of the current road segment, and the distance from the current vehicle to the next road segment in step S203, in this step, the third SOC median is corrected according to the current real-time vehicle speed of the current vehicle, so as to obtain the SOC control median. The step is mainly to correct the obtained SOC control median, because the actual vehicle speed may be far greater than the average vehicle speed during the driving process of the current vehicle, and the vehicle may also be in a stopped state, the SOC control median may be properly increased at a higher vehicle speed, so that the power generation efficiency and the power generation amount of the generator 10 may be increased, and the SOC control median may be properly decreased at a lower vehicle speed, so that the engine 9 may be prevented from operating in a low-efficiency area to generate power to a certain extent, and a more economical power control requirement may be obtained. The present step is mainly to correct the SOC control median value by using the actual speed of the current vehicle, and meanwhile, the present step may also consider the aforementioned slope and acceleration process, for example, an uphill is recognized ahead, the SOC control median value may be reduced to reduce the power generation amount, and even the engine 9 may be directly stopped.
And S103, adjusting the powertrain mode of the current vehicle based on the SOC control median.
After the SOC control median of the power battery is determined based on the travel information in step S102, the powertrain mode of the current vehicle is adjusted based on the SOC control median in this step. Specifically, in this step, the most appropriate powertrain mode is determined and acquired based on the SOC control median of the power battery 8.
Specifically, as shown in fig. 5, the step S103 includes:
s401, determining an SOC threshold value based on the SOC control median.
After acquiring the SOC control median, in this step, the SOC threshold value is determined based on the SOC control median. Specifically, according to the SOC control median, the entire vehicle control unit 1 may automatically calculate an upper limit of a pure electric driving SOC, a lower limit of the pure electric driving SOC, an upper limit of a charging SOC, and the like, where the upper limit of the pure electric driving SOC indicates that the current vehicle may enter pure electric driving, the lower limit of the pure electric driving SOC indicates that the current vehicle needs to enter a power generation state, the upper limit of the charging SOC indicates an upper limit of a power generation SOC, and the like, where the calculation process may be implemented by, but not limited to, using the SOC control median multiplication factor.
S402, adjusting the powertrain mode of the current vehicle based on the SOC control median and the SOC threshold value.
After the SOC threshold value is determined based on the SOC control median value by the above-described step S302, in this step, the powertrain state is controlled based on the SOC threshold value. Specifically, the vehicle control unit 1 may determine a powertrain mode that the vehicle needs to enter according to the SOC threshold values, and control the vehicle to enter a corresponding powertrain mode, where the powertrain mode is, for example, an EV mode, a series mode, a parallel mode, and the like, and simultaneously control the magnitude of the electric quantity in different states, and finally implement dynamic management of the energy. For example, when the vehicle enters a series mode, the vehicle control unit 1 calculates the power generation amount according to the upper and lower limits of the economic zone of the engine and the SOC control median, and aims to ensure that the actual SOC reaches the SOC control median as soon as possible while the engine operates in the economic zone.
The embodiment of the disclosure can plan the median SOC at the end of the future road section by acquiring the information of the future road section, correct the current median SOC according to the real-time vehicle speed, and automatically adjust the power assembly mode according to the median strategy, so that the energy loss caused by the calculation deviation of the target SOC due to inaccurate information of the future road section can be effectively reduced, the energy management is realized, and the driving range of the whole vehicle is further improved.
The embodiment of the disclosure is suitable for vehicles carrying HEV driving modes and the like, when a driver starts navigation, the vehicle can acquire future road section information from a navigation system in real time, and the power assembly mode is automatically adjusted by processing the future road section information and current vehicle state information, so that the economic management of energy is realized, the energy utilization rate is improved, and the continuous mileage of the whole vehicle is prolonged.
A second embodiment of the present disclosure relates to an energy management device of a new energy vehicle, which includes an acquisition module, a determination module, and an adjustment module, the modules being coupled to each other, wherein:
the acquisition module is used for acquiring the driving information of the next road section in the target driving route of the current vehicle;
the determining module is used for determining a SOC control median of the battery based on the running information;
and the adjusting module is used for adjusting the powertrain mode of the current vehicle based on the change of the SOC control intermediate value.
The determining module includes:
the energy consumption demand acquisition unit is used for acquiring the energy consumption demand of the current vehicle on the next road section based on the driving information;
a first SOC median determining unit, configured to determine a first SOC median of the vehicle at the end of the current road section according to an average vehicle speed of the vehicle on the current road section and an average vehicle speed of a next road section based on a comparison result of the energy consumption requirement and available energy of the battery;
and the SOC control median determining unit is used for determining a third SOC median at the current moment as the SOC control median based on the first SOC median, a second SOC median when the current vehicle starts at the current road section and the distance from the current vehicle to the next road section.
Further, the determining module further comprises:
and the correction unit is used for correcting the third SOC median value according to the current real-time speed of the current vehicle to obtain the SOC control median value.
The energy consumption requirement obtaining unit comprises:
an average vehicle speed obtaining subunit, configured to obtain, based on the driving information, an average vehicle speed of the vehicle in the next road segment;
and the energy consumption demand acquisition subunit is configured to acquire the energy consumption demand of the next road segment based on the average vehicle speed of the next road segment.
The first SOC median determination unit is specifically configured to:
when the energy consumption demand is smaller than the available energy of the battery, if the average vehicle speed of the current road section and the average vehicle speed of the next road section are both higher than a first vehicle speed threshold value, the first median SOC value determined under the condition that the average vehicle speed of the current road section is higher than the average vehicle speed of the next road section is higher than the first median SOC value determined under the condition that the average vehicle speed of the current road section is lower than the average vehicle speed of the next road section.
The first SOC median determination unit is further configured to:
if the average vehicle speed of the current road section and the average vehicle speed of the next road section are both lower than a second vehicle speed threshold value, the first SOC median determined under the condition that the average vehicle speed of the current road section is lower than the average vehicle speed of the next road section is lower than the first SOC median determined under the condition that the average vehicle speed of the current road section is higher than the average vehicle speed of the next road section; and/or the first SOC median determined under the condition that the average vehicle speed of the current road section exceeds the average vehicle speed of the next road section by a preset multiple is higher than the first SOC median determined under the condition that the average vehicle speed of the next road section exceeds the average vehicle speed of the current road section by a preset multiple.
The adjustment module includes:
an SOC threshold value determination unit configured to determine an SOC threshold value based on the SOC control median value;
and the adjusting unit is used for adjusting the powertrain mode of the current vehicle based on the SOC control median and the SOC threshold value.
The embodiment of the disclosure can plan the median SOC at the end of the future road section by acquiring the information of the future road section, correct the current median SOC according to the real-time vehicle speed, and automatically adjust the power assembly mode according to the median strategy, so that the energy loss caused by the calculation deviation of the target SOC due to inaccurate information of the future road section can be effectively reduced, the energy management is realized, and the driving range of the whole vehicle is further improved.
The embodiment of the disclosure is suitable for vehicles carrying HEV driving modes and the like, when a driver starts navigation, the vehicle can automatically adjust the power assembly mode from the future road section information acquired by a navigation system in real time, and the power assembly mode is automatically adjusted by processing the future road section information and the current vehicle state information, so that the economic management of energy is realized, the energy utilization rate is improved, and the driving mileage of the whole vehicle is prolonged.
A third embodiment of the present disclosure provides a storage medium, which is a computer-readable medium storing a computer program, which when executed by a processor implements the method provided by the first embodiment of the present disclosure, including the following steps S11 to S13:
s11, acquiring the driving information of the next road section in the target driving route of the current vehicle;
s12, determining a SOC control median of the battery based on the running information;
and S13, adjusting the power assembly mode of the current vehicle based on the change of the SOC control intermediate value.
Further, the computer program realizes the other methods provided by the first embodiment of the disclosure when being executed by the processor
The embodiment of the disclosure can plan the median SOC at the end of the future road section by acquiring the information of the future road section, correct the current median SOC according to the real-time vehicle speed, and automatically adjust the power assembly mode according to the median strategy, so that the energy loss caused by the calculation deviation of the target SOC due to inaccurate information of the future road section can be effectively reduced, the energy management is realized, and the driving range of the whole vehicle is further improved.
The embodiment of the disclosure is suitable for vehicles carrying HEV driving modes and the like, when a driver starts navigation, the vehicle can automatically adjust the power assembly mode from the future road section information acquired by a navigation system in real time, and the power assembly mode is automatically adjusted by processing the future road section information and the current vehicle state information, so that the economic management of energy is realized, the energy utilization rate is improved, and the driving mileage of the whole vehicle is prolonged.
A fourth embodiment of the present disclosure provides an electronic device, which includes at least a memory and a processor, the memory having a computer program stored thereon, the processor implementing the method provided by any of the embodiments of the present disclosure when executing the computer program on the memory. Illustratively, the electronic device computer program steps are as follows S21 to S23:
s21, acquiring the driving information of the next road section in the target driving route of the current vehicle;
s22, determining a SOC control median value of the battery based on the running information;
and S23, adjusting the powertrain mode of the current vehicle based on the change of the SOC control intermediate value.
Further, the processor also executes the computer program in the third embodiment described above
The embodiment of the disclosure can plan the median SOC at the end of the future road section by acquiring the information of the future road section, correct the current median SOC according to the real-time vehicle speed, and automatically adjust the power assembly mode according to the median strategy, so that the energy loss caused by the calculation deviation of the target SOC due to inaccurate information of the future road section can be effectively reduced, the energy management is realized, and the driving range of the whole vehicle is further improved.
The embodiment of the disclosure is suitable for vehicles carrying HEV driving modes and the like, when a driver starts navigation, the vehicle can acquire future road section information from a navigation system in real time, and the power assembly mode is automatically adjusted by processing the future road section information and current vehicle state information, so that the economic management of energy is realized, the energy utilization rate is improved, and the continuous mileage of the whole vehicle is prolonged.
The storage medium may be included in the electronic device; or may be separate and not incorporated into the electronic device.
The storage medium carries one or more programs that, when executed by the electronic device, cause the electronic device to: acquiring at least two internet protocol addresses; sending a node evaluation request comprising at least two internet protocol addresses to node evaluation equipment, wherein the node evaluation equipment selects the internet protocol addresses from the at least two internet protocol addresses and returns the internet protocol addresses; receiving an internet protocol address returned by the node evaluation equipment; wherein the obtained internet protocol address indicates an edge node in the content distribution network.
Alternatively, the storage medium carries one or more programs that, when executed by the electronic device, cause the electronic device to: receiving a node evaluation request comprising at least two internet protocol addresses; selecting an internet protocol address from at least two internet protocol addresses; returning the selected internet protocol address; wherein the received internet protocol address indicates an edge node in the content distribution network.
Computer program code for carrying out operations for the present disclosure may be written in any combination of one or more programming languages, including but not limited to an object oriented programming language such as Java, smalltalk, C + +, and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the passenger computer, partly on the passenger computer, as a stand-alone software package, partly on the passenger computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the passenger computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).
It should be noted that the storage media described above in this disclosure can be computer readable signal media or computer readable storage media or any combination of the two. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. 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 (EPROM or 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 disclosure, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. In contrast, in the present disclosure, a computer readable signal medium may comprise a propagated data signal with computer readable program code embodied therein, either in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may be any storage medium that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. Program code embodied on a storage medium may be transmitted using any appropriate medium, including but not limited to: electrical wires, optical cables, RF (radio frequency), etc., or any suitable combination of the foregoing.
The flowchart 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 disclosure. In this regard, 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 and/or flowchart illustration, and combinations of blocks in the block diagrams and/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 described in the embodiments of the present disclosure may be implemented by software or hardware. Wherein the name of an element does not in some cases constitute a limitation on the element itself.
The functions described herein above may be performed, at least in part, by one or more hardware logic components. For example, without limitation, exemplary types of hardware logic components that may be used include: field Programmable Gate Arrays (FPGAs), application Specific Integrated Circuits (ASICs), application Specific Standard Products (ASSPs), systems on a chip (SOCs), complex Programmable Logic Devices (CPLDs), and the like.
In the context of this disclosure, a machine-readable medium may be a tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. The machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. More specific examples of a machine-readable storage medium would include an electrical connection based on 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 (EPROM or flash memory), an optical fiber, a compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
The foregoing description is only exemplary of the preferred embodiments of the disclosure and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the disclosure herein is not limited to the particular combination of features described above, but also encompasses other combinations of features described above or equivalents thereof without departing from the spirit of the disclosure. For example, the above features and (but not limited to) the features disclosed in this disclosure having similar functions are replaced with each other to form the technical solution.
Further, while operations are depicted in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order. Under certain circumstances, multitasking and parallel processing may be advantageous. Likewise, while several specific implementation details are included in the above discussion, these should not be construed as limitations on the scope of the disclosure. Certain features that are described in the context of separate embodiments can also be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment can also be implemented in multiple embodiments separately or in any suitable subcombination.
Although the subject matter has been described in language specific to structural features and/or methodological acts, it is to be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as example forms of implementing the claims.
While the present disclosure has been described in detail with reference to the embodiments, the present disclosure is not limited to the specific embodiments, and those skilled in the art can make various modifications and alterations based on the concept of the present disclosure, and the modifications and alterations should fall within the scope of the present disclosure as claimed.

Claims (10)

1. A method for managing energy of a new energy vehicle, comprising:
acquiring the driving information aiming at the next road section in the target driving route of the current vehicle;
determining a median SOC control value of the battery based on the driving information;
adjusting a powertrain mode of the current vehicle based on the change in the SOC control neutral value.
2. The energy management method according to claim 1, wherein the determining a median SOC control value of the battery based on the travel information includes:
acquiring the energy consumption requirement of the current vehicle on the next road section based on the driving information;
determining a first SOC median value of the vehicle at the end of the current road section according to the average speed of the vehicle at the current road section and the average speed of the vehicle at the next road section based on the comparison result of the energy consumption demand and the available energy of the battery;
and determining a third SOC median value at the current moment as the SOC control median value based on the first SOC median value, a second SOC median value of the current vehicle at the beginning of the current road section and the distance of the current vehicle entering the next road section.
3. The energy management method of claim 2, further comprising:
and correcting the third SOC median according to the current real-time speed of the current vehicle to obtain the SOC control median.
4. The energy management method according to claim 2, wherein the obtaining of the energy consumption demand of the current vehicle on the next road segment based on the driving information comprises:
acquiring the average speed of the vehicle on the next road section based on the running information;
and acquiring the energy consumption requirement of the next road section based on the average speed of the next road section.
5. The energy management method according to claim 2, wherein the determining a first median SOC value of the vehicle at the end of the current road segment according to the average vehicle speed of the vehicle on the current road segment and the average vehicle speed of the next road segment based on the comparison of the energy consumption demand and the available energy of the battery comprises:
when the energy consumption demand is smaller than the available energy of the battery, if the average vehicle speed of the current road section and the average vehicle speed of the next road section are both higher than a first vehicle speed threshold value, the first median SOC value determined under the condition that the average vehicle speed of the current road section is higher than the average vehicle speed of the next road section is higher than the first median SOC value determined under the condition that the average vehicle speed of the current road section is lower than the average vehicle speed of the next road section.
6. The energy management method of claim 5, further comprising:
if the average vehicle speed of the current road section and the average vehicle speed of the next road section are both lower than a second vehicle speed threshold value, the first SOC median value determined under the condition that the average vehicle speed of the current road section is lower than the average vehicle speed of the next road section is lower than the first SOC median value determined under the condition that the average vehicle speed of the current road section is higher than the average vehicle speed of the next road section; and/or the first SOC median value determined under the condition that the average vehicle speed of the current road section exceeds the average vehicle speed of the next road section by a preset multiple is higher than the first SOC median value determined under the condition that the average vehicle speed of the next road section exceeds the average vehicle speed of the current road section by a preset multiple.
7. The energy management method of claim 1, wherein the adjusting the powertrain mode of the current vehicle based on the change in the value of the SOC control neutral comprises:
determining an SOC threshold value based on the SOC control median;
and adjusting the powertrain mode of the current vehicle based on the SOC control median and the SOC threshold value.
8. An energy management device of a new energy vehicle, characterized by comprising:
the acquisition module is used for acquiring the driving information of the next road section in the target driving route of the current vehicle;
the determining module is used for determining a SOC control median of the battery based on the running information;
and the adjusting module is used for adjusting the powertrain mode of the current vehicle based on the change of the SOC control intermediate value.
9. A storage medium storing a computer program, characterized in that the computer program realizes the steps of the method of any one of claims 1 to 7 when executed by a processor.
10. An electronic device comprising at least a memory, a processor, the memory having a computer program stored thereon, wherein the processor, when executing the computer program on the memory, is adapted to carry out the steps of the method of any of claims 1 to 7.
CN202210711803.2A 2022-06-22 2022-06-22 Energy management method and device for new energy vehicle Pending CN115158093A (en)

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CN102407850A (en) * 2011-09-26 2012-04-11 浙江大学 Hybrid electric bus energy management method based on random operation condition model
CA3102406A1 (en) * 2019-12-26 2021-06-26 Transportation Ip Holdings, Llc Vehicle control system
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