CN116373620A - Range extender control method and device based on driving mileage and range extender electric automobile - Google Patents

Range extender control method and device based on driving mileage and range extender electric automobile Download PDF

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Publication number
CN116373620A
CN116373620A CN202310406237.9A CN202310406237A CN116373620A CN 116373620 A CN116373620 A CN 116373620A CN 202310406237 A CN202310406237 A CN 202310406237A CN 116373620 A CN116373620 A CN 116373620A
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China
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mileage
power generation
total
range
congestion
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Chinese (zh)
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曹杨
黄大飞
刘小飞
陈轶
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Chongqing Selis Phoenix Intelligent Innovation Technology Co ltd
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Chengdu Seres Technology Co Ltd
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Priority to CN202310406237.9A priority Critical patent/CN116373620A/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
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/61—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
    • B60L50/62—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles charged by low-power generators primarily intended to support the batteries, e.g. range extenders
    • 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
    • B60W20/12—Controlling the power contribution of each of the prime movers to meet required power demand using control strategies taking into account route information
    • 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
    • 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
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/60—Navigation input
    • B60L2240/68—Traffic data
    • 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
    • B60L2260/00—Operating Modes
    • B60L2260/40—Control modes
    • B60L2260/50—Control modes by future state prediction
    • B60L2260/52—Control modes by future state prediction drive range estimation, e.g. of estimation of available travel distance
    • 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)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Power Engineering (AREA)
  • Control Of Eletrric Generators (AREA)

Abstract

The application relates to the technical field of automobiles and provides a range extender control method and device based on driving mileage and a range extender electric automobile. The method comprises the following steps: when the total mileage is greater than the pure electric mileage: calculating a clear duty ratio and a congestion duty ratio based on the total mileage, the congestion mileage and the clear mileage; determining a first power generation weight of the clear mileage based on the clear duty cycle, and determining a second power generation weight of the congestion mileage based on the first power generation weight; calculating the first power generation amount of the smooth mileage and the second power generation amount of the congestion mileage according to the total power generation amount, the first power generation weight and the second power generation weight; calculating the first power generation power of the smooth mileage and the second power generation power of the jammed mileage according to the first power generation amount, the second power generation amount, the smooth duty ratio, the jammed duty ratio and the total time; and in the smooth mileage, controlling the range extender of the range-extending electric automobile to generate power according to the first power generation power, and in the congestion mileage, controlling the range extender of the range-extending electric automobile to generate power according to the second power generation power.

Description

Range extender control method and device based on driving mileage and range extender electric automobile
Technical Field
The application relates to the technical field of automobiles, in particular to a range extender control method and device based on driving mileage and a range extender electric automobile.
Background
Compared with a pure electric vehicle, the range-extended electric vehicle has the greatest advantage of longer endurance mileage, namely, when the power battery is deficient, the range extender converts fuel energy into electric energy for driving the vehicle. At present, when the battery power of the range extender is reduced to the threshold value for starting the range extender, the range extender is started. In fact, the power generation efficiency of the range extender is related to the road section, the power generation efficiency of the range extender for the congested road section is lower, and the power generation efficiency of the range extender for the unblocked road section is higher. However, the control of the range extender is only related to the battery level, and different road sections of the driving mileage are not considered.
Disclosure of Invention
In view of this, the embodiment of the application provides a range extender control method and device based on driving mileage and a range extender electric vehicle, so as to solve the problem in the prior art that in the control of the range extender electric vehicle, the control efficiency of the range extender is low because different road sections of the driving mileage are not considered.
In a first aspect of the embodiments of the present application, a range extender control method based on driving mileage is provided, including: determining the total mileage and total time of the current journey and the pure electric mileage of the extended range electric vehicle; when the total mileage is greater than the pure electric mileage: calculating the total power generation amount of a range extender of the range-extending electric automobile in the current journey according to the difference value of the total mileage and the pure electric mileage; acquiring road condition information of the journey, and dividing the total mileage into congestion mileage and smooth mileage according to the road condition information; calculating a clear duty ratio and a congestion duty ratio based on the total mileage, the congestion mileage and the clear mileage; determining a first power generation weight of the clear mileage based on the clear duty cycle, and determining a second power generation weight of the congestion mileage based on the first power generation weight; calculating the first power generation amount of the smooth mileage and the second power generation amount of the congestion mileage according to the total power generation amount, the first power generation weight and the second power generation weight; calculating the first power generation power of the smooth mileage and the second power generation power of the jammed mileage according to the first power generation amount, the second power generation amount, the smooth duty ratio, the jammed duty ratio and the total time; and in the smooth mileage, controlling the range extender of the range-extending electric automobile to generate power according to the first power generation power, and in the congestion mileage, controlling the range extender of the range-extending electric automobile to generate power according to the second power generation power.
In a second aspect of the embodiments of the present application, there is provided a range extender control device based on driving mileage, including: the determining module is configured to determine the total mileage and total time of the current journey and the pure electric mileage of the extended-range electric vehicle; a first calculation module configured to, when the total mileage is greater than the pure electric mileage: calculating the total power generation amount of a range extender of the range-extending electric automobile in the current journey according to the difference value of the total mileage and the pure electric mileage; the dividing module is configured to acquire road condition information of the current journey and divide the total mileage into congestion mileage and smooth mileage according to the road condition information; a second calculation module configured to calculate a clear duty cycle and a congestion duty cycle based on the total mileage, the congestion mileage, and the clear mileage; a second determination module configured to determine a first power generation weight for the clear mileage based on the clear duty cycle, and determine a second power generation weight for the congested mileage based on the first power generation weight; the third calculation module is configured to calculate the first power generation amount of the smooth mileage and the second power generation amount of the congestion mileage according to the total power generation amount, the first power generation weight and the second power generation weight; a fourth calculation module configured to calculate a first power generation of a clear mileage and a second power generation of a congestion mileage according to the first power generation amount, the second power generation amount, the clear duty ratio, the congestion duty ratio, and the total time; the control module is configured to control the range extender of the range-extending electric automobile to generate power according to the first power generation power in the smooth mileage, and control the range extender of the range-extending electric automobile to generate power according to the second power generation power in the congestion mileage.
In a third aspect of the embodiments of the present application, a range-extended electric vehicle is provided, including a memory, a main control module, and a computer program stored in the memory and capable of running on the main control module, where the main control module implements the steps of the method as described above when executing the computer program.
Compared with the prior art, the beneficial effects of the embodiment of the application at least comprise: the method and the device determine the total mileage and the total time of the current journey and the pure electric mileage of the extended range electric vehicle; when the total mileage is greater than the pure electric mileage: calculating the total power generation amount of a range extender of the range-extending electric automobile in the current journey according to the difference value of the total mileage and the pure electric mileage; acquiring road condition information of the journey, and dividing the total mileage into congestion mileage and smooth mileage according to the road condition information; calculating a clear duty ratio and a congestion duty ratio based on the total mileage, the congestion mileage and the clear mileage; determining a first power generation weight of the clear mileage based on the clear duty cycle, and determining a second power generation weight of the congestion mileage based on the first power generation weight; calculating the first power generation amount of the smooth mileage and the second power generation amount of the congestion mileage according to the total power generation amount, the first power generation weight and the second power generation weight; calculating the first power generation power of the smooth mileage and the second power generation power of the jammed mileage according to the first power generation amount, the second power generation amount, the smooth duty ratio, the jammed duty ratio and the total time; and in the smooth mileage, controlling the range extender of the range-extending electric automobile to generate power according to the first power generation power, and in the congestion mileage, controlling the range extender of the range-extending electric automobile to generate power according to the second power generation power. By adopting the technical means, the problem of low control efficiency of the range extender caused by the fact that different road sections of driving mileage are not considered in the control of the range extender electric automobile in the prior art can be solved, so that the control efficiency of the range extender electric automobile is improved, the emission and the vehicle cost are reduced, and the vehicle experience of a user is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following description will briefly introduce the drawings that are needed in the embodiments or the description of the prior art, it is obvious that the drawings in the following description are only some embodiments of the present application, 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 schematic flow chart of a range extender control method based on driving mileage according to an embodiment of the present application;
FIG. 2 is a schematic flow chart of another range extender control method based on driving mileage according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a range extender control device based on driving mileage according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of an extended-range electric vehicle according to an embodiment of the present application.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system configurations, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
Fig. 1 is a schematic flow chart of a range extender control method based on driving mileage according to an embodiment of the present application. The range extender control method based on driving mileage of fig. 1 may be executed by a main control module provided on the range-extending electric vehicle. Alternatively, the driving range extender control method of fig. 1 may be executed by a computer or a general server, or software on a computer or a general server. Taking a main control module as an execution main body as an example, the range extender control method based on driving mileage comprises the following steps:
s101, determining the total mileage and total time of the current journey and the pure electric mileage of the extended range electric vehicle;
s102, when the total mileage is greater than the pure electric mileage, calculating the total power generation amount of a range extender of the range extender electric vehicle in the current journey according to the difference value of the total mileage and the pure electric mileage;
s103, acquiring road condition information of the current journey, and dividing the total mileage into congestion mileage and smooth mileage according to the road condition information;
s104, calculating a clear duty ratio and a congestion duty ratio based on the total mileage, the congestion mileage and the clear mileage;
s105, determining a first power generation weight of the smooth mileage based on the smooth duty ratio, and determining a second power generation weight of the congestion mileage based on the first power generation weight;
s106, calculating a first power generation amount of the smooth mileage and a second power generation amount of the congestion mileage according to the total power generation amount, the first power generation weight and the second power generation weight;
s107, calculating the first power generation power of the smooth mileage and the second power generation power of the jammed mileage according to the first power generation amount, the second power generation amount, the smooth duty ratio, the jammed duty ratio and the total time;
s108, controlling the range extender of the range-extending electric automobile to generate power according to the first power generation power in the smooth mileage, and controlling the range extender of the range-extending electric automobile to generate power according to the second power generation power in the congestion mileage.
Specifically: according to the starting point and the ending point of the current journey, the total mileage and the total time of the current journey can be achieved through navigation software. According to the electric quantity and the quality of the extended range electric automobile and other vehicle information, the pure electric mileage of the extended range electric automobile can be determined, wherein the pure electric mileage is the total distance that the extended range electric automobile only runs by means of the electric quantity of a battery under the condition that the extended range electric automobile is not started. When the total mileage is greater than the pure electric mileage, the battery power is insufficient to support the extended range electric vehicle to run for the current trip, and in this case, a scheme is needed to be designed to control the extended range device of the extended range electric vehicle to generate power and increase the endurance of the extended range electric vehicle. The calculated total power generation amount is used for supporting mileage except pure electric mileage in the total mileage of the extended range electric vehicle, and the power amount required by the vehicle after a period of running is calculated as the prior art, and is not repeated. The different clear duty ratios correspond to the corresponding first power generation weights, such as 0, 0.2, 0.4, 0.6, 0.8, and 1 for clear duty ratios of 0, 0.4, 0.6, 0.8, 0.95, and 1, respectively. The sum of the first power generation weight and the second power generation weight is 1, and the second power generation weight of the congestion mileage is further determined.
According to the technical scheme provided by the embodiment of the application, the total mileage and total time of the current journey and the pure electric mileage of the extended-range electric vehicle are determined; when the total mileage is greater than the pure electric mileage: calculating the total power generation amount of a range extender of the range-extending electric automobile in the current journey according to the difference value of the total mileage and the pure electric mileage; acquiring road condition information of the journey, and dividing the total mileage into congestion mileage and smooth mileage according to the road condition information; calculating a clear duty ratio and a congestion duty ratio based on the total mileage, the congestion mileage and the clear mileage; determining a first power generation weight of the clear mileage based on the clear duty cycle, and determining a second power generation weight of the congestion mileage based on the first power generation weight; calculating the first power generation amount of the smooth mileage and the second power generation amount of the congestion mileage according to the total power generation amount, the first power generation weight and the second power generation weight; calculating the first power generation power of the smooth mileage and the second power generation power of the jammed mileage according to the first power generation amount, the second power generation amount, the smooth duty ratio, the jammed duty ratio and the total time; and in the smooth mileage, controlling the range extender of the range-extending electric automobile to generate power according to the first power generation power, and in the congestion mileage, controlling the range extender of the range-extending electric automobile to generate power according to the second power generation power. By adopting the technical means, the problem of low control efficiency of the range extender caused by the fact that different road sections of driving mileage are not considered in the control of the range extender electric automobile in the prior art can be solved, so that the control efficiency of the range extender electric automobile is improved, the emission and the vehicle cost are reduced, and the vehicle experience of a user is improved.
Further, a clear duty cycle, a congestion duty cycle, a first power generation weight, and a second power generation weight are calculated by the following formula:
R congestion of ＝S Congestion of /S Total (S)
R Clear ＝S Clear /S Total (S)
W 1 ＝U 1 *W Total (S)
W 2 ＝U 2 *W Total (S)
Wherein R is Congestion of For congestion duty cycle, S Congestion of For congestion mileage, S Total (S) For the total mileage R Clear To be smooth duty ratio, S Clear For smooth mileage W 1 U is the first power generation amount 1 For the first power generation weight, W Total (S) To the total power generation, W 2 U is the second power generation amount 2 And the second power generation weight.
The clear mileage divided by the total mileage results in a clear duty cycle, and the congestion mileage divided by the total mileage results in a congestion duty cycle; the result of multiplying the total power generation amount by the first power generation weight is used as a first power generation amount; the result of multiplying the total power generation amount and the second power generation weight is taken as the second power generation amount.
Further, the first generated power and the second generated power are calculated by the following formula:
P 1 ＝W 1 /(R Clear *T total (S) )
P 2 ＝W 2 /(R Congestion of *T Total (S) )
Wherein P is 1 For the first power generation, W 1 R is the first power generation amount Clear To be smooth duty ratio, T Total (S) P is the total time 2 For the second power generation, W 2 R is the second power generation amount Congestion of Is the congestion duty cycle.
Dividing the first power generation amount by the clear duty ratio and dividing by the total time to obtain first power generation; the second generated energy is divided by the congestion ratio and divided by the total time as the second generated power.
In an alternative embodiment, after calculating the first power generation of the clear mileage and the second power generation of the congested mileage according to the first power generation amount, the second power generation amount, the clear duty ratio, the congested duty ratio, and the total time, the method further includes: acquiring working power of a plurality of accessories started on the extended-range electric automobile in the current journey; multiplying the sum of the working powers of the accessories by the total time to obtain the total accessory power generation capacity corresponding to the accessories; and updating the total power generation amount by using the total accessory power generation amount, and updating the first power generation amount and the second power generation amount according to the updated total power generation amount.
Each accessory in the vehicle is { A } 1 ，A 2 ,…,A n Work of accessoriesAs power { P ] 1 ，P 2 ,…,P n Will (P) 1 +P 2 ……+P n )*T Total (S) As a result of the total accessory power generation.
Specifically: taking the sum of the total accessory power generation amount and the total power generation amount as the updated total power generation amount; taking the result of multiplying the updated total power generation amount and the first power generation weight as the updated first power generation amount; taking the result of multiplying the updated total power generation amount and the second power generation weight as updated second power generation amount; dividing the updated first power generation amount by the clear duty ratio and then dividing by the total time to obtain updated first power generation amount; and dividing the updated second generated energy by the congestion ratio and dividing the updated second generated energy by the total time to obtain updated second generated power.
Fig. 2 is a flow chart of another driving mileage-based range extender control method provided in an embodiment of the present application, which is executed by a main control module, as shown in fig. 2, and includes:
when the total mileage is less than or equal to the pure electric mileage:
s201, controlling the range extender electric vehicle to run under the condition that the range extender is not started, and determining the remaining mileage of the current journey and the remaining pure electric mileage of the remaining time range extender electric vehicle when the electric quantity of the range extender electric vehicle is reduced to a preset threshold value;
s202, when the remaining mileage is greater than the remaining pure electric mileage: calculating corresponding vehicle energy consumption and total accessory energy consumption of a plurality of accessories started on the extended range electric vehicle in the residual mileage respectively;
s203, calculating third generated power according to the vehicle energy consumption, the total accessory energy consumption and the residual time;
s204, when the electric quantity of the range-extending electric automobile is reduced to a preset threshold value, starting and controlling the range extender to generate electricity according to the third generated power.
The total mileage of the present journey can be divided into the travelled mileage and the residual mileage, and the total time can be divided into the elapsed time and the residual time; when the electric quantity of the extended range electric automobile is reduced to a preset threshold value, the distance the extended range electric automobile has travelled is the travelled mileage, otherwise the travelled mileage is the remaining mileage; when the electric quantity of the extended range electric automobile is reduced to a preset threshold value, the time spent by the extended range electric automobile is the used time, otherwise, the time spent by the extended range electric automobile is the remaining time; the distance that the extended range electric automobile can complete only under the support of the current residual electric quantity is the residual pure electric mileage. And dividing the sum of the vehicle energy consumption and the total accessory energy consumption by the remaining time to obtain third generated power. Optionally, the sum of the vehicle energy consumption, the total accessory energy consumption and the preset energy consumption divided by the remaining time is taken as the third generated power.
If the amount of power consumed by the accessory is not considered (the embodiment above does not consider the amount of power consumed by the accessory), then when the total mileage is less than or equal to the pure electric mileage (pure electric mileage is the total distance traveled by the extended range electric vehicle depending only on the battery power without starting the range extender and the accessory), it is stated that the battery power is sufficient to support the extended range electric vehicle to travel the present distance. In practice, however, some accessories on extended range electric vehicles are turned on every stroke, such as PTC heater heating, compressor cooling, seat massage, etc. Because these accessories consume some power, even if the total mileage is less than or equal to the pure electric mileage, there may be cases where the battery power is insufficient to support the extended range electric vehicle to run through the current trip. The situation needs to judge the relation between the residual mileage and the residual pure electric mileage, and if the residual mileage is smaller than or equal to the residual pure electric mileage, the battery power is enough to support the residual mileage in the current journey of the extended-range electric vehicle; if the remaining mileage is greater than the remaining pure electric mileage, the battery power is insufficient to support the remaining mileage of the extended range electric vehicle in the current journey. Under the situation, a scheme is needed to be designed to control the range extender of the range extender electric vehicle to generate electricity and increase the endurance of the range extender electric vehicle, and the embodiment of the application is to design a scheme for controlling the range extender to generate electricity based on accessory energy consumption and residual time aiming at the situation.
Furthermore the end point of the user navigation is not necessarily its destination. The user is likely to continue driving the vehicle after arriving at the navigation site. In order to recognize this situation and perform reasonable processing, after the user finishes the navigation, if the user continues to travel, a travel distance that the user continues to travel after finishing the navigation is calculated. If the driving distance is greater than the threshold value, the user is considered to have a requirement of continuing driving, and the range extender is immediately started to generate power. The generated power (the generated power at this time is the third generated power) is determined by the accessory power (the accessory power determines the total accessory power consumption) together with the driving demand power (the driving demand power determines the vehicle power consumption). Meanwhile, a certain amount of electricity is generated to charge the battery pack.
Further, calculating total accessory energy consumption corresponding to a plurality of accessories started on the extended range electric automobile in the remaining mileage, including: determining first energy consumption in the driving mileage of each accessory started on the extended-range electric vehicle in the current journey; calculating a value of dividing the first energy consumption of each accessory by the travelled distance and multiplying the calculated value by the remaining distance, and taking the value as the second energy consumption of each accessory in the remaining distance; the sum of the second energy consumption of all accessories is taken as the total accessory energy consumption.
The second energy consumption of each accessory is calculated by the formula:
W 4 ＝W 3 /S has already been provided with *S The remainder is
W 4 For the second energy consumption of the accessories, W 3 For the first energy consumption of the accessory, S Has already been provided with For travelled distance S The remainder is And is the remaining mileage.
Further, calculating total accessory energy consumption corresponding to a plurality of accessories started on the extended range electric automobile in the remaining mileage, including: determining first energy consumption of each accessory started on the extended range electric automobile in the elapsed time of the current journey; calculating a value of the first energy consumption of each accessory divided by the elapsed time and multiplied by the remaining time, and taking the value as the second energy consumption of each accessory in the remaining mileage; the sum of the second energy consumption of all accessories is taken as the total accessory energy consumption.
The second energy consumption of each accessory is calculated by the formula:
W 4 ＝W 3 /T has already been provided with *T The remainder is
W 4 For the second energy consumption of the accessories, W 3 For the first energy consumption of the accessory, T Has already been provided with For the elapsed time, T The remainder is Is the remaining time.
Will all W 4 And as W 6 ，W 6 Indicating the total accessory power consumption.
If serious traffic jam occurs in the driving process of the vehicle, the remaining mileage and the remaining time do not linearly correspond, and the total accessory energy consumption calculated by the two embodiments has larger difference; however, the total accessory energy consumption calculated by the two embodiments is not very different without particularly severe traffic congestion. The larger of the total accessory energy consumption calculated in the two embodiments can be selected to participate in subsequent calculations, thereby yielding a more secure result.
The third power generation is calculated by the following formula:
P 3 ＝(W 5 +W 6 )*T the remainder is
P 3 For the third power generation, W 5 For vehicle energy consumption, W 6 Energy consumption for the total accessories.
The third power generation is calculated by the following formula:
P 3 ＝(W 5 +W 6 +W 7 )*T the remainder is
W 7 Is the preset energy consumption.
Further, after determining the pure electric mileage, the method further includes: acquiring working power of a plurality of accessories started on the extended-range electric automobile in the current journey; multiplying the sum of the working powers of the accessories by the total time to obtain the total accessory power generation capacity corresponding to the accessories; and updating the pure electric mileage by using the total accessory power generation amount.
The pure electric mileage above is the total distance that the extended range electric automobile only relies on the battery power to travel under the condition that the extended range device is not started and the accessory is not started, and the pure electric mileage updated by the total accessory power generation amount is the total distance that the extended range electric automobile only relies on the battery power to travel under the condition that the extended range device is not started and the accessory is started.
Any combination of the above optional solutions may be adopted to form an optional embodiment of the present application, which is not described herein in detail.
The following are device embodiments of the present application, which may be used to perform method embodiments of the present application. For details not disclosed in the device embodiments of the present application, please refer to the method embodiments of the present application.
Fig. 3 is a schematic diagram of a range extender control device based on driving mileage according to an embodiment of the present application. As shown in fig. 3, the range extender control device based on driving mileage includes:
a first determining module 301 configured to determine a total mileage and a total time of the present trip and a pure electric mileage of the extended-range electric vehicle;
the first calculation module 302 is configured to, when the total mileage is greater than the pure electric mileage: calculating the total power generation amount of a range extender of the range-extending electric automobile in the current journey according to the difference value of the total mileage and the pure electric mileage;
the dividing module 303 is configured to obtain the road condition information of the current journey, and divide the total mileage into a congestion mileage and a clear mileage according to the road condition information;
a second calculation module 304 configured to calculate a clear duty cycle and a congestion duty cycle based on the total mileage, the congestion mileage, and the clear mileage;
a second determination module 305 configured to determine a first power generation weight for the clear mileage based on the clear duty cycle, and a second power generation weight for the congested mileage based on the first power generation weight;
a third calculation module 306 configured to calculate a first power generation amount of the clear mileage and a second power generation amount of the congestion mileage based on the total power generation amount, the first power generation weight, and the second power generation weight;
a fourth calculation module 307 configured to calculate a first power generation of the clear mileage and a second power generation of the congested mileage based on the first power generation amount, the second power generation amount, the clear duty, the congested duty, and the total time;
the control module 308 is configured to control the range extender of the range-extending electric automobile to generate power according to the first power generation power in the smooth mileage, and control the range extender of the range-extending electric automobile to generate power according to the second power generation power in the congested mileage.
According to the technical scheme provided by the embodiment of the application, the total mileage and total time of the current journey and the pure electric mileage of the extended-range electric vehicle are determined; when the total mileage is greater than the pure electric mileage: calculating the total power generation amount of a range extender of the range-extending electric automobile in the current journey according to the difference value of the total mileage and the pure electric mileage; acquiring road condition information of the journey, and dividing the total mileage into congestion mileage and smooth mileage according to the road condition information; calculating a clear duty ratio and a congestion duty ratio based on the total mileage, the congestion mileage and the clear mileage; determining a first power generation weight of the clear mileage based on the clear duty cycle, and determining a second power generation weight of the congestion mileage based on the first power generation weight; calculating the first power generation amount of the smooth mileage and the second power generation amount of the congestion mileage according to the total power generation amount, the first power generation weight and the second power generation weight; calculating the first power generation power of the smooth mileage and the second power generation power of the jammed mileage according to the first power generation amount, the second power generation amount, the smooth duty ratio, the jammed duty ratio and the total time; and in the smooth mileage, controlling the range extender of the range-extending electric automobile to generate power according to the first power generation power, and in the congestion mileage, controlling the range extender of the range-extending electric automobile to generate power according to the second power generation power. By adopting the technical means, the problem of low control efficiency of the range extender caused by the fact that different road sections of driving mileage are not considered in the control of the range extender electric automobile in the prior art can be solved, so that the control efficiency of the range extender electric automobile is improved, the emission and the vehicle cost are reduced, and the vehicle experience of a user is improved.
Optionally, the second calculation module 304 is further configured to calculate the clear duty cycle, the congestion duty cycle, the first power generation weight, and the second power generation weight by the following formula:
R congestion of ＝S Congestion of /S Total (S)
R Clear ＝S Clear /S Total (S)
W 1 ＝U 1 *W Total (S)
W 2 ＝U 2 *W Total (S)
Wherein R is Congestion of For congestion duty cycle, S Congestion of For congestion mileage, S Total (S) Is taken as the total interiorJourney, R Clear To be smooth duty ratio, S Clear For smooth mileage W 1 U is the first power generation amount 1 For the first power generation weight, W Total (S) To the total power generation, W 2 U is the second power generation amount 2 And the second power generation weight.
Optionally, the third calculation module 306 is further configured to calculate the first and second generated powers by the following formula:
P 1 ＝W 1 /(R Clear *T total (S) )
P 2 ＝W 2 /(R Congestion of *T Total (S) )
Wherein P is 1 For the first power generation, W 1 R is the first power generation amount Clear To be smooth duty ratio, T Total (S) P is the total time 2 For the second power generation, W 2 R is the second power generation amount Congestion of Is the congestion duty cycle.
Optionally, the fourth computing module 307 is further configured to obtain the working powers of a plurality of accessories started on the extended-range electric vehicle in the current trip; multiplying the sum of the working powers of the accessories by the total time to obtain the total accessory power generation capacity corresponding to the accessories; and updating the total power generation amount by using the total accessory power generation amount, and updating the first power generation amount and the second power generation amount according to the updated total power generation amount.
Optionally, the first determining module 301 is further configured to, when the total mileage is equal to or less than the pure electric mileage: controlling the range extender electric vehicle to run under the condition that the range extender is not started, and determining the remaining mileage of the current journey and the remaining pure electric mileage of the remaining time range extender electric vehicle when the electric quantity of the range extender electric vehicle is reduced to a preset threshold value; when the remaining mileage is greater than the remaining pure electric mileage: calculating corresponding vehicle energy consumption and total accessory energy consumption of a plurality of accessories started on the extended range electric vehicle in the residual mileage respectively; calculating third generated power according to the vehicle energy consumption, the total accessory energy consumption and the residual time; when the electric quantity of the range-extending electric automobile is reduced to a preset threshold value, starting and controlling the range extender to generate electricity according to the third generated power.
Optionally, the first determining module 301 is further configured to determine a first energy consumption in a travelled distance of each accessory started on the extended range electric vehicle in the current trip; calculating a value of dividing the first energy consumption of each accessory by the travelled distance and multiplying the calculated value by the remaining distance, and taking the value as the second energy consumption of each accessory in the remaining distance; the sum of the second energy consumption of all accessories is taken as the total accessory energy consumption.
Optionally, the first determining module 301 is further configured to calculate the second energy consumption of each accessory by:
W 4 ＝W 3 /S has already been provided with *S The remainder is
W 4 For the second energy consumption of the accessories, W 3 For the first energy consumption of the accessory, S Has already been provided with For travelled distance S The remainder is And is the remaining mileage.
Optionally, the first determining module 301 is further configured to determine a first energy consumption in an elapsed time in the present trip for each accessory started on the extended range electric vehicle; calculating a value of the first energy consumption of each accessory divided by the elapsed time and multiplied by the remaining time, and taking the value as the second energy consumption of each accessory in the remaining mileage; the sum of the second energy consumption of all accessories is taken as the total accessory energy consumption.
Optionally, the first determining module 301 is further configured to calculate the second energy consumption of each accessory by:
W 4 ＝W 3 /T has already been provided with *T The remainder is
W 4 For the second energy consumption of the accessories, W 3 For the first energy consumption of the accessory, T Has already been provided with For the elapsed time, T The remainder is Is the remaining time.
Optionally, the first determining module 301 is further configured to calculate the third generated power by the following formula:
P 3 ＝(W 5 +W 6 )*T the remainder is
P 3 For the third power generation, W 5 For vehicle energy consumption, W 6 Energy consumption for the total accessories.
Optionally, the first determining module 301 is further configured to calculate the third generated power by the following formula:
P 3 ＝(W 5 +W 6 +W 7 )*T the remainder is
W 7 Is the preset energy consumption.
Optionally, the first determining module 301 is further configured to obtain the working powers of a plurality of accessories started on the extended-range electric vehicle in the current trip; multiplying the sum of the working powers of the accessories by the total time to obtain the total accessory power generation capacity corresponding to the accessories; and updating the pure electric mileage by using the total accessory power generation amount.
It should be understood that the sequence number of each step in the foregoing embodiment does not mean that the execution sequence of each process should be determined by the function and the internal logic of each process, and should not limit the implementation process of the embodiment of the present application in any way.
Fig. 4 is a schematic diagram of an extended range electric vehicle 4 according to an embodiment of the present disclosure. As shown in fig. 4, the extended-range electric vehicle 4 of this embodiment includes: a main control module 401, a memory 402 and a computer program 403 stored in the memory 402 and executable on the main control module 401. The main control module 401, when executing the computer program 403, implements the steps in the above-described method embodiments. Alternatively, the main control module 401 implements the functions of the modules/units in the above-described device embodiments when executing the computer program 403.
The extended range electric vehicle 4 may include, but is not limited to, a main control module 401 and a memory 402. It will be appreciated by those skilled in the art that fig. 4 is merely an example of an extended range electric vehicle 4 and is not limiting of the extended range electric vehicle 4, and may include more or fewer components than shown, or different components.
The main control module 601 may be VCU (Vehicle Control Unit), and the memory 402 may be an internal storage unit of the extended-range electric vehicle 4, for example, a hard disk or a memory of the extended-range electric vehicle 4. The memory 402 may be an external storage device of the extended-range electric vehicle 4, for example, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card) or the like provided on the extended-range electric vehicle 4. The memory 402 may also include both internal storage units and external storage devices of the extended range electric vehicle 4. The memory 402 is used for storing computer programs and other programs and data required by the extended-range electric vehicle.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of the functional units and modules is illustrated, and in practical application, the above-described functional distribution may be performed by different functional units and modules according to needs, i.e. the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-described functions. The functional units and modules in the embodiment may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit, where the integrated units may be implemented in a form of hardware or a form of a software functional unit.
The integrated modules/units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the present application may implement all or part of the flow of the method of the foregoing embodiment, or may be implemented by implementing relevant hardware by using a computer program, where the computer program may be stored in a computer readable storage medium, and the computer program may implement the steps of each embodiment of the foregoing method when executed by the main control module. The computer program may comprise computer program code, which may be in source code form, object code form, executable file or in some intermediate form, etc. The computer readable medium may include: any entity or device capable of carrying computer program code, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer Memory, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), an electrical carrier signal, a telecommunications signal, a software distribution medium, and so forth. It should be noted that the content of the computer readable medium can be appropriately increased or decreased according to the requirements of the jurisdiction's jurisdiction and the patent practice, for example, in some jurisdictions, the computer readable medium does not include electrical carrier signals and telecommunication signals according to the jurisdiction and the patent practice.
The above embodiments are only for illustrating the technical solution of the present application, and are not limiting thereof; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application.

Claims (10)

1. The driving mileage-based range extender control method is characterized by comprising the following steps of:
determining the total mileage and total time of the current journey and the pure electric mileage of the extended range electric vehicle;
when the total mileage is greater than the pure electric mileage:
calculating the total power generation amount of a range extender of the range-extending electric automobile in the current journey according to the difference value between the total mileage and the pure electric mileage;
acquiring road condition information of the current journey, and dividing the total mileage into congestion mileage and smooth mileage according to the road condition information;
calculating a clear duty cycle and a congestion duty cycle based on the total mileage, the congestion mileage and the clear mileage;
determining a first power generation weight of the clear mileage based on the clear duty cycle, and determining a second power generation weight of the congested mileage based on the first power generation weight;
calculating a first power generation amount of the smooth mileage and a second power generation amount of the congestion mileage according to the total power generation amount, the first power generation weight and the second power generation weight;
calculating the first power generation power of the smooth mileage and the second power generation power of the jammed mileage according to the first power generation amount, the second power generation amount, the smooth duty ratio, the jammed duty ratio and the total time;
and in the smooth mileage, controlling the range extender of the range-extending electric automobile to generate electricity according to the first power generation power, and in the congestion mileage, controlling the range extender of the range-extending electric automobile to generate electricity according to the second power generation power.
2. The method of claim 1, wherein the clear duty cycle, the congestion duty cycle, the first power generation weight, and the second power generation weight are calculated by the following formula:
r congestion = S congestion/S total
R clear = S clear/S total
W 1 ＝U 1 *W Total (S)
W 2 ＝U 2 *W Total (S)
Wherein R is Congestion of For the congestion duty cycle, S Congestion of For the congestion mileage, S Total (S) For the total mileage, R Clear For the clear duty cycle, S Clear For the smooth mileage, W 1 For the first power generation amount, U 1 For the first power generation weight, W Total (S) W is the total power generation 2 For the second power generation amount, U 2 And the second power generation weight is given.
3. The method of claim 1, wherein the first and second generated powers are calculated by the formula:
P 1 ＝W 1 /(R Clear *T total (S) )
P 2 ＝W 2 /(R Congestion of *T Total (S) )
Wherein P is 1 For the first power generation, W 1 For the first power generation amount, R Clear For the clear duty cycle, T Total (S) For the total time, P 2 For the second generation power, W 2 R is the second power generation amount Congestion of For the congestion duty cycle。
4. The method of claim 1, wherein after calculating the first generated power for the clear mileage and the second generated power for the congested mileage based on the first generated power, the second generated power, the clear duty, the congested duty, and the total time, the method further comprises:
acquiring working power of a plurality of accessories started on the extended-range electric automobile in the current journey;
multiplying the sum of the working powers of the accessories by the total time to obtain the total accessory power generation capacity corresponding to the accessories;
and updating the total power generation amount by using the total accessory power generation amount, and updating the first power generation amount and the second power generation amount according to the updated total power generation amount.
5. The method of claim 1, wherein when the total mileage is less than or equal to the pure mileage, comprising:
controlling the range extender to run under the condition that the range extender is not started, and determining the residual mileage and the residual time of the current journey and the residual pure electric mileage of the range extender when the electric quantity of the range extender is reduced to a preset threshold value;
when the remaining mileage is greater than the remaining pure electric mileage:
calculating vehicle energy consumption and total accessory energy consumption corresponding to a plurality of accessories started on the extended range electric vehicle in the residual mileage respectively;
calculating a third generated power according to the vehicle energy consumption, the total accessory energy consumption and the residual time;
when the electric quantity of the range-extending electric automobile is reduced to the preset threshold value, starting and controlling the range extender to generate electricity according to the third generated power.
6. The method of claim 5, wherein calculating a total accessory energy consumption for a plurality of accessories activated on the extended range electric vehicle for the remaining range comprises:
determining first energy consumption of each accessory started on the extended range electric automobile in the driving mileage in the current journey;
calculating a value of dividing the first energy consumption of each accessory by the travelled distance and multiplying the travelled distance by the remaining distance, and taking the value as a second energy consumption of each accessory in the remaining distance;
and taking the sum of the second energy consumption of all accessories as the total accessory energy consumption.
7. The method of claim 5, wherein calculating a total accessory energy consumption for a plurality of accessories activated on the extended range electric vehicle for the remaining range comprises:
determining first energy consumption of each accessory started on the extended-range electric automobile in the elapsed time of the current journey;
calculating a value of a first energy consumption of each accessory divided by the elapsed time multiplied by the remaining time, and taking the value as a second energy consumption of each accessory in the remaining mileage;
and taking the sum of the second energy consumption of all accessories as the total accessory energy consumption.
8. The method of claim 1, wherein after determining the pure electric mileage, the method further comprises:
acquiring working power of a plurality of accessories started on the extended-range electric automobile in the current journey;
multiplying the sum of the working powers of the accessories by the total time to obtain the total accessory power generation capacity corresponding to the accessories;
and updating the pure electric mileage by utilizing the total accessory power generation amount.
9. A range extender control device based on driving mileage, comprising:
the first determining module is configured to determine the total mileage and total time of the current journey and the pure electric mileage of the extended-range electric vehicle;
a first calculation module configured to, when the total mileage is greater than the pure electric mileage: calculating the total power generation amount of a range extender of the range-extending electric automobile in the current journey according to the difference value between the total mileage and the pure electric mileage;
the dividing module is configured to acquire road condition information of the current journey and divide the total mileage into congestion mileage and smooth mileage according to the road condition information;
a second calculation module configured to calculate a clear duty cycle and a congestion duty cycle based on the total mileage, the congestion mileage, and the clear mileage;
a second determination module configured to determine a first power generation weight for the clear mileage based on the clear duty cycle, and a second power generation weight for the congested mileage based on the first power generation weight;
a third calculation module configured to calculate a first power generation amount of the clear mileage and a second power generation amount of the congestion mileage based on the total power generation amount, the first power generation weight, and the second power generation weight;
a fourth calculation module configured to calculate a first power generation of the clear mileage and a second power generation of the congestion mileage according to a first power generation amount, a second power generation amount, a clear duty ratio, a congestion duty ratio, and a total time;
the control module is configured to control the range extender of the range-extending electric automobile to generate power according to the first power generation power in the smooth mileage, and control the range extender of the range-extending electric automobile to generate power according to the second power generation power in the congestion mileage.
10. A range extender electric vehicle, comprising a memory, a main control module and a computer program stored in the memory and operable on the main control module, wherein the main control module implements the range extender control method based on driving mileage according to any one of claims 1 to 8 when executing the computer program.
CN202310406237.9A 2023-04-17 2023-04-17 Range extender control method and device based on driving mileage and range extender electric automobile Pending CN116373620A (en)

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