CN114954428A - Range extender system control method, device and medium - Google Patents

Range extender system control method, device and medium Download PDF

Info

Publication number
CN114954428A
CN114954428A CN202210727086.2A CN202210727086A CN114954428A CN 114954428 A CN114954428 A CN 114954428A CN 202210727086 A CN202210727086 A CN 202210727086A CN 114954428 A CN114954428 A CN 114954428A
Authority
CN
China
Prior art keywords
range extender
range
vehicle
power
soc
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210727086.2A
Other languages
Chinese (zh)
Inventor
王赫
徐刚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
New United Rail Transit Technology Co Ltd
Original Assignee
New United Rail Transit Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by New United Rail Transit Technology Co Ltd filed Critical New United Rail Transit Technology Co Ltd
Priority to CN202210727086.2A priority Critical patent/CN114954428A/en
Publication of CN114954428A publication Critical patent/CN114954428A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • 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
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/24—Energy storage means
    • B60W2510/242—Energy storage means for electrical energy
    • B60W2510/244—Charge state
    • 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
    • Y02T10/62—Hybrid vehicles
    • 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

Landscapes

  • 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)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The application relates to the technical field of new energy, and discloses a control method, a device and a medium of a range extender system, which are applied to a range extender system comprising a plurality of range extenders. Compared with the prior art, the range extender system cannot meet the vehicle running requirement due to the fact that the adjustable power output range is insufficient, the technical scheme is adopted, the SOC of a vehicle battery capable of reflecting the vehicle running requirement or the required power of vehicle running is collected, the number of the range extenders which are put into use is determined according to the deviation degree of the SOC and the preset threshold, more range extenders are put into use when the deviation is larger, sufficient output power is provided, the vehicle running requirement is met, and the functional diversity of the vehicle is expanded.

Description

Range extender system control method, device and medium
Technical Field
The present application relates to the field of new energy technologies, and in particular, to a method, an apparatus, and a medium for controlling a range extender system.
Background
The range extender refers to an electric vehicle part which can provide extra electric energy so as to increase the driving mileage of the electric vehicle, and the range extender in the traditional sense refers to a combination of an engine and a generator. The range extender on the electric automobile can use other energy sources (such as gasoline) for electric energy supply under the condition that the electric quantity of the battery is insufficient. The electric energy generated by the range extender is supplied to the motor for driving through the storage battery, and meanwhile, the electric energy can be supplied to the battery for charging.
Increase journey ware system among the prior art uses one to increase journey ware and supplies, but because the influence of factors such as energy availability factor optimization and driving system demand power and generating power matching nature are not enough, during the in-service use, it is not enough to increase the adjustable power output scope of journey ware system, can't satisfy vehicle operation demand, has reduced the functional diversity of vehicle.
Therefore, it is an urgent need to solve the problem of providing a range extender with a wider output power to meet the requirement of a driving system.
Disclosure of Invention
The application aims to provide a range extender system control method, a range extender system control device and a range extender system control medium, which are applied to a range extender system comprising a plurality of range extenders and used for putting different numbers of range extenders under different conditions so as to improve the power output range, meet the vehicle operation requirements and expand the functional diversity of a vehicle.
In order to solve the technical problem, the present application provides a method for controlling a range extender system, which is applied to a range extender system including a plurality of range extenders, and the method includes:
acquiring the SOC of a vehicle battery or the required power for vehicle running;
determining the deviation degree of the SOC or the required power and a corresponding preset threshold value;
determining the number of the inputted range extenders according to the deviation degree; the deviation degree and the number of the range extenders are in positive correlation.
Preferably, the range extender comprises a first range extender and a second range extender;
if the SOC is larger than the first threshold value, confirming not to put into the range extender;
if the SOC is smaller than the first threshold value and larger than a second threshold value, the first range extender is confirmed to be put into;
and if the SOC is smaller than the second threshold value, the first range extender and the second range extender are confirmed to be put into use.
Preferably, the range extender comprises a first range extender and a second range extender;
if the required power is not larger than the discharge power of the vehicle battery, confirming that the range extender is not put into use;
if the required power is larger than the vehicle battery discharge power and the difference value is larger than 0 and not larger than the output power of the first range extender, confirming to input the first range extender;
and if the difference is larger than the output power of the first range extender, the first range extender and the second range extender are confirmed to be put into use.
Preferably, before the step of confirming whether the range extender is put into use, the method further includes:
acquiring the state information of the whole vehicle;
and judging whether the vehicle has a fault according to the state information of the whole vehicle, if so, prohibiting to put in the range extender, and if not, entering a step of confirming whether to put in the range extender.
Preferably, the first range extender may be further provided with:
acquiring the working time of the first range extender and the second range extender;
if the working time length of the first range extender is longer than that of the second range extender and the difference value is not smaller than the threshold value, the second range extender is used as the first range extender to be put into use;
wherein the first range extender is the range extender which is put in last time.
Preferably, the method further comprises the following steps:
determining a specific power output point according to the oil consumption characteristic of the range extender;
if the required power is not larger than the specific power output point, controlling equal power output of the first range extender and the second range extender to meet the required power;
if the output power is larger than the preset value, the first range extender is controlled to output full power, and the second range extender supplements the residual required power output to meet the required power.
Preferably, the method further comprises the following steps:
and if the range extender system fails, reducing the required power.
In order to solve the above technical problem, the present application further provides a range extender system control device, which is applied to a range extender system including a plurality of range extenders, the device including:
the acquisition module is used for acquiring the SOC of a vehicle battery or the required power for vehicle running;
the determining module is used for determining the deviation degree of the SOC or the required power and a corresponding preset threshold value;
the input module is used for determining the number of input range extenders according to the deviation degree; the deviation degree and the number of the range extenders are in positive correlation.
In order to solve the above technical problem, the present application further provides another range extender system control apparatus, which includes a memory for storing a computer program;
and the processor is used for realizing the steps of the range extender system control method when executing the computer program.
In order to solve the above technical problem, the present application further provides a computer-readable storage medium, where a computer program is stored, and the computer program, when executed by a processor, implements the steps of the range extender system control method.
The range extender system control method is applied to a range extender system comprising a plurality of range extenders, the deviation degree of SOC or required power and a corresponding preset threshold value is determined by acquiring the SOC of a vehicle battery or the required power of vehicle running, the number of the range extenders in which the deviation degree is put is determined according to the deviation degree, and the deviation degree is positively correlated with the number of the range extenders. Compared with the prior art, the range extender system cannot meet the vehicle running requirement due to the fact that the adjustable power output range is insufficient, the technical scheme is adopted, the SOC of a vehicle battery capable of reflecting the vehicle running requirement or the required power of vehicle running is collected, the number of the range extenders which are put into is determined according to the deviation degree of the SOC and the preset threshold value, more range extenders are put into when the deviation is larger, sufficient output power is provided, the vehicle running requirement is met, and the function diversity of the vehicle is expanded.
In addition, the range extender system control device and the medium provided by the application correspond to the range extender system control method, and the effects are the same as the effects.
Drawings
In order to more clearly illustrate the embodiments of the present application, the drawings needed for the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained by those skilled in the art without inventive effort.
Fig. 1 is a flowchart of a control method of a range extender system according to an embodiment of the present disclosure;
fig. 2 is a CAN network topology diagram provided in the embodiment of the present application;
fig. 3 is a structural diagram of a control device of a range extender system according to an embodiment of the present disclosure;
fig. 4 is a block diagram of another range extender system control device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without any creative effort belong to the protection scope of the present application.
In order to improve the driving mileage of a vehicle, improve the energy use efficiency and reduce the operation cost of customers, range extenders are increasingly applied to the field of new energy vehicles. The range extender refers to an electric vehicle part which can provide additional electric energy so that the electric vehicle can increase the driving mileage, and the range extender refers to a combination of an engine and a generator in the traditional sense. The range extender on the electric automobile can use other energy sources (such as gasoline) for electric energy supply under the condition of insufficient battery capacity. The electric energy generated by the range extender is supplied to the motor for driving through the storage battery, and meanwhile, the electric energy can be supplied to the battery for charging.
Currently, a methanol range extender system is widely applied to the fields of automobiles and industry as an existing scheme, and has stronger competitiveness in the market due to higher environmental protection performance of fuel compared with other traditional fossil fuels and relatively low acquisition and transportation cost.
Increase journey ware system among the prior art often uses an increase journey ware to supply the energy supply, but because the influence of factors such as energy availability factor optimization and actuating system demand power and generating power matching nature are not enough, during the in-service use, the adjustable power output scope of increase journey ware system is not enough, can't satisfy vehicle operation demand, has reduced the functional diversity of vehicle.
The core of the application is to provide a range extender system control method, device and medium, which are applied to a range extender system comprising a plurality of range extenders and used for putting different numbers of range extenders under different conditions so as to improve the power output range, meet the vehicle operation requirements and expand the functional diversity of the vehicle.
In order that those skilled in the art will better understand the disclosure, the following detailed description will be given with reference to the accompanying drawings.
Fig. 1 is a flowchart of a method for controlling a range extender system, which is applied to a range extender system including a plurality of range extenders, according to an embodiment of the present disclosure, and as shown in fig. 1, the method includes:
s10: the SOC of the vehicle battery or the required power for vehicle running is acquired.
The execution main body in this embodiment may be a range extender system control device, or a new energy Vehicle Control Unit (VCU), and the VCU is a "brain level" controller in a new energy vehicle control system, and is responsible for functions of vehicle driving control, accessory management, energy management, fault processing, information interaction, and the like. The vehicle Controller divides the vehicle into a plurality of Controller Area Networks (CAN) according to functions, and CAN transmit information to an Electronic Control Unit (ECU) in each CAN Network to realize Control over each CAN Network, thereby realizing different functions.
Fig. 2 is a CAN network topology diagram provided in an embodiment of the present application, where the CAN network is a CAN network of a range extender system, and fig. 2 illustrates a range extender system composed of two range extenders, where the range extender system further includes a Generator Control Unit (GCU) and a fan for heat dissipation, and the GCU is used as a core component of the range extender system to start an engine, convert engine energy into electric energy, charge a battery, and provide energy for a driving motor, and undertakes the tasks of starting and stopping the engine, converting energy, improving efficiency, saving energy, and reducing emission. The VCU in this embodiment is connected to the diagnostic interface through the CAN in addition to the communication with the ECU through the CAN, and is used to detect a fault of the vehicle.
State of charge (SOC) refers to the ratio of the remaining capacity of a battery after it has been used for a period of time or left unused for an extended period of time to its capacity in its fully charged state, expressed in percent. The value range of the battery charging indicator is 0-1, when the SOC is 0, the battery is completely discharged, and when the SOC is 1, the battery is completely charged.
In a specific implementation, after the VCU is powered on, the vehicle state including the SOC of the vehicle battery, the required power for the vehicle to run, the fault information of the vehicle, and the like are acquired from each CAN network. In this embodiment, the objective of the present application is to select the number of range extenders to be put into according to actual conditions, where SOC represents the state of charge of the vehicle battery, and the required power for vehicle driving represents the vehicle demand, and both of these items represent the degree of urgency for using the range extender, so that in step S10, the VCU needs to collect the SOC of the vehicle battery or the required power for vehicle driving.
The present embodiment further provides a formula for calculating the required power, as follows:
Figure BDA0003713626380000051
wherein W is the required power, V MAX At the maximum vehicle speed, η t For the efficiency of the power transmission system of the whole vehicle, m is the mass of the whole vehicle, g is the gravity acceleration, f is the rolling resistance coefficient, C D Is the wind resistance coefficient, and A is the windward area. W is required power required for the entire vehicle, including power required for the vehicle to travel and power required for accessories (for example, an air conditioner) of the vehicle, and W-P is vehicle travel power Xiaoxiao (medicine for eliminating cough and asthma) Wherein P is Xiaoxiao (medicine for eliminating cough and asthma) Consuming power for the accessory.
S11: and determining the deviation degree of the SOC or the required power and the corresponding preset threshold value.
S12: determining the number of the inputted range extenders according to the deviation degree; the deviation degree is positively correlated with the number of the range extenders.
In this embodiment, the number of range extenders that need to be invested is determined according to the deviation degree between the SOC or the required power and the corresponding preset threshold. It can be understood that the deviation degree of the SOC or the required power from the corresponding preset threshold reflects the required degree of the output power of the vehicle, and when the deviation degree is larger, it indicates that more output power is required, so more range extenders are required.
The method for controlling the range extender system is applied to the range extender system comprising a plurality of range extenders, the deviation degree of SOC or required power and a corresponding preset threshold value is determined by acquiring the SOC of a vehicle battery or the required power of vehicle running, and the number of the range extenders in use is determined according to the deviation degree, wherein the deviation degree is positively correlated with the number of the range extenders. Compared with the prior art, the range extender system cannot meet the vehicle running requirement due to the fact that the adjustable power output range is insufficient, the technical scheme is adopted, the SOC of a vehicle battery capable of reflecting the vehicle running requirement or the required power of vehicle running is collected, the number of the range extenders which are put into is determined according to the deviation degree of the SOC and the preset threshold value, more range extenders are put into when the deviation is larger, sufficient output power is provided, the vehicle running requirement is met, and the function diversity of the vehicle is expanded.
It can be understood that, in the specific implementation, the range extender has a large volume, and if the range extender system of the vehicle includes too many range extenders, the spatial arrangement is not favorable, and the functional diversity of the vehicle should be supported by the reality, and depending on the output power that the vehicle battery can provide, the too many range extenders will not be used all the time, and the waste of resources is also caused.
Therefore, on the basis of the above embodiment, the range extender system in this embodiment includes two range extenders, and the range extender includes a first range extender and a second range extender;
if the SOC is larger than the first threshold value, confirming that the range extender is not put into use;
if the SOC is smaller than the first threshold and larger than the second threshold, the first range extender is confirmed to be put into;
and if the SOC is smaller than the second threshold value, the first range extender and the second range extender are confirmed to be put into use.
In the present embodiment, in which two range extenders form a range extender system, a first threshold value and a second threshold value represent the SOC of the vehicle battery, wherein the first threshold value is a larger value than the second threshold value. In the above embodiment, the SOC is set to 0-1, and a larger value represents a higher state of charge of the vehicle battery and a higher stored electric quantity. Therefore, when the SOC is greater than the first threshold value, it indicates that the vehicle battery is in a good condition, and a sufficient amount of electric power can be supplied without using a range extender. When the SOC is smaller than the first threshold and larger than the second threshold, it indicates that the vehicle battery is in a normal state, and the vehicle battery may not meet all vehicle requirements. And when the SOC is smaller than the second threshold value, the state of the vehicle battery is poor, the vehicle battery can only provide a little output or can not provide the output, and at the moment, the first range extender and the second range extender are required to be put into use to jointly provide energy for the vehicle and charge the vehicle battery.
The above embodiments use SOC as the criterion for determining whether to put the range extender into operation, and the present embodiment also provides a method for controlling the range extender system using the required power as the criterion.
In the embodiment, if the required power is not greater than the discharging power of the vehicle battery, the range extender is not determined to be put into use;
if the required power is larger than the discharging power of the vehicle battery and the difference value is larger than 0 and not larger than the output power of the first range extender, the first range extender is confirmed to be put into;
and if the difference is larger than the output power of the first range extender, the first range extender and the second range extender are confirmed to be put into.
In this embodiment, the number of the range extenders is determined by combining the required power and the output power of a single range extender. When the required power is not more than the discharge power of the vehicle battery, the output of the vehicle battery can meet the vehicle requirement, and the range extender is not needed. And if the required power is greater than the discharging power of the vehicle battery, the vehicle battery cannot meet the vehicle requirement, and at the moment, the range extender needs to be put into cooperation with the vehicle battery to meet the vehicle requirement together. After the requirement of putting the range extender is confirmed, several range extenders are determined to be put according to the output power which is also required to be provided. When the difference between the required power and the discharging power of the vehicle battery is larger than 0 and not larger than the output power of the first range extender, the requirement can be met only by putting the first range extender, and if the difference is larger than the output power of the first range extender, the second range extender is required to be put in, and at the moment, the two range extenders supplement output together.
According to the control method of the range extender system, the range extender system comprises the first range extender and the second range extender, and on the premise of improving the adjustable output power, the number of the range extenders is reduced as much as possible, so that the occupied space is reduced, and the integrated arrangement of vehicles is facilitated. In addition, the embodiment also provides a judgment method for specifically confirming the number of the range extenders put into the range extender system, so that the number of the range extenders put into the range extender system can be properly adjusted according to the vehicle requirements, and the charging of the vehicle battery and the vehicle functions are realized.
In the above embodiments, the VCU of the vehicle CAN be connected to the diagnostic interface through the CAN, so as to monitor the fault. In the specific implementation, if the safety of vehicle driving is affected by the fault of the vehicle, if the vehicle is still put into use by the range extender when the vehicle has the fault, more serious accidents are easily caused, and the safety of drivers is threatened.
Therefore, in addition to the above embodiments, in this embodiment, before the step of confirming whether to insert the range extender, the method further includes:
acquiring the state information of the whole vehicle;
and judging whether the vehicle has a fault according to the state information of the whole vehicle, if so, prohibiting to put in the range extender, and if not, entering a step of confirming whether to put in the range extender.
The method for controlling the range extender system provided by the embodiment judges whether the vehicle has a fault before confirming whether the range extender is put into, and prohibits putting into the range extender if the vehicle has the fault so as to avoid the occurrence of an accident. It can be understood that some faults can affect the running safety of the vehicle during running of the vehicle, and the range extender is required to be prohibited. And some fault risk degrees are small, the running safety of the vehicle cannot be influenced, and the range extender can be used at the moment. Therefore, in the specific implementation, the faults possibly occurring in the vehicle can be classified, and whether the range extender is put into use or not can be confirmed according to the fault grade.
It is understood that long operation of the range extender may reduce the useful life of the range extender. In order to protect the range extender, in this embodiment, when only the first range extender is used, the method further includes:
acquiring the working time of a first range extender and the working time of a second range extender;
if the working time length of the first range extender is longer than that of the second range extender and the difference value is not smaller than the threshold value, the second range extender is used as the first range extender to be put into operation;
wherein, the first range extender is the range extender which is put into the range last time.
In this embodiment, by setting the threshold, when the difference between the operating durations of the two range extenders exceeds the threshold, the range extender is replaced. Taking the threshold value as 500h as an example, in a specific implementation, when one range extender needs to be put into use, the range extender put into use last time is used again by default, for example, the range extender is the first range extender, the VCU determines whether the working time length of the first range extender is longer than the working time length of the second range extender and the difference is longer than 500h, if the working time length of the first range extender is longer than 500h, the second range extender is used instead to provide output, and if the working time length of the first range extender is not longer than 500h, the first range extender continues to provide output. In the embodiment, the first range extender and the second range extender are replaced by a rotation mode, so that the problem that the service life is shortened due to long-time use of one range extender is solved.
In a specific implementation, the number of the range extenders and the difference in the output provided by each range extender cause the oil consumption to be different. In order to reduce the oil consumption as much as possible on the premise of meeting the requirement, in this embodiment, the method for controlling the range extender system further includes:
determining a specific power output point according to the oil consumption characteristic of the range extender;
if the required power is not larger than the specific power output point, controlling equal power output of the first range extender and the second range extender to meet the required power;
if the output power is larger than the preset value, the full power output of the first range extender is controlled, and the second range extender supplements the residual required power output to meet the required power.
It should be noted that the precondition for the fuel consumption control in the present embodiment is that both the first range extender and the second range extender are put into use, and the maximum output power of one range extender is 37kw as an example.
When the power which needs to be supplemented by the range extender is less than 37kw, only one range extender is required to be put in, when the power exceeds 74kw, the two range extenders are required to output at the maximum power, and when the power exceeds 37kw and is less than 74kw, whether the power output of the two range extenders is equal to the power output of the one range extender or the power output of the other range extender is at the maximum power can be determined according to the oil consumption, and the other range extender supplements the residual output. The embodiment further provides a specific determination method, and first, the power output calculation formula of the range extender system is as follows:
W t ＝(K 1 +K 2 )W 0
wherein, W t To increase the range as requiredTarget output power, K, of the converter 1 、K 2 The output ratio of a single range extender, W 0 And outputting power for a single range extender.
Determining a specific power output point according to the oil consumption characteristic of the range extender:
Q+O＝2*O m
wherein Q is the oil consumption required for 37kw output, O is the oil consumption required for the remaining output power satisfying the target output power, O m The amount of oil consumption required to equally divide the target power. The control point at this time is determined to be (T) a ,S a )，T a To output torque, S a For outputting rotational speed, according to formula of power
Figure BDA0003713626380000091
The specific power output point P at the moment is obtained a When in actual control, P is less than or equal to P a When the power is required, the first range extender and the second range extender are selectively controlled to output equal power to meet the required power, and K is used 1 ＝K 2 . When P is greater than P a At this time, one range extender is selected to output full power, and the other range extender supplements the rest required power.
In the embodiment, the output power of each range extender is adjusted to reduce the oil consumption as much as possible on the premise of meeting the required power.
During vehicle travel, if the range extender system fails, the output cannot be continuously provided, so in this embodiment: if the range extender system fails, the required power is reduced.
In the specific implementation, if the range extender system of the vehicle breaks down, the range extender cannot be continuously put into use, so that a driver needs to be informed in time to reduce the driving requirement and reduce the required power. It can be understood that the fault of the range extender system also can be divided into a plurality of cases, in other embodiments, if only one range extender is used, and the fault of the range extender system is the fault of the range extender, at this time, the fault can be switched to other range extenders to continuously provide output, and the required power does not need to be reduced on the premise of safe driving.
In the above embodiments, the control method of the range extender system is described in detail, and the present application also provides embodiments corresponding to the control device of the range extender system. It should be noted that the present application describes the embodiments of the apparatus portion from two perspectives, one from the perspective of the function module and the other from the perspective of the hardware.
Fig. 3 is a structural diagram of a range extender system control device according to an embodiment of the present application, which is applied to a range extender system including a plurality of range extenders, and as shown in fig. 3, the device includes:
an obtaining module 10, configured to obtain an SOC of a vehicle battery or a required power for vehicle driving;
the determining module 11 is configured to determine a deviation degree between the SOC or the required power and a corresponding preset threshold;
the input module 12 is used for determining the number of input range extenders according to the deviation degree; the deviation degree is positively correlated with the number of the range extenders.
Since the embodiments of the apparatus portion and the method portion correspond to each other, please refer to the description of the embodiments of the method portion for the embodiments of the apparatus portion, which is not repeated here.
The distance measuring device system control device provided by the embodiment of the application is applied to a distance measuring device system comprising a plurality of distance measuring devices, the deviation degree of SOC or required power and a corresponding preset threshold value is determined by acquiring the SOC of a vehicle battery or the required power of vehicle running, the number of the distance measuring devices is determined according to the deviation degree, and the deviation degree is positively correlated with the number of the distance measuring devices. Compared with the prior art, the range extender system cannot meet the vehicle running requirement due to the fact that the adjustable power output range is insufficient, the technical scheme is adopted, the SOC of a vehicle battery capable of reflecting the vehicle running requirement or the required power of vehicle running is collected, the number of the range extenders which are put into is determined according to the deviation degree of the SOC and the preset threshold value, more range extenders are put into when the deviation is larger, sufficient output power is provided, the vehicle running requirement is met, and the function diversity of the vehicle is expanded.
Fig. 4 is a block diagram of another range extender system control device according to an embodiment of the present application, and as shown in fig. 4, the device includes: a memory 20 for storing a computer program;
the processor 21 is configured to implement the steps of the range extender system control method according to the above embodiment when executing the computer program.
The range extender system control device provided by the embodiment may include, but is not limited to, a smart phone, a tablet computer, a notebook computer, a desktop computer, or the like.
The processor 21 may include one or more processing cores, such as a 4-core processor, an 8-core processor, and the like. The Processor 21 may be implemented in hardware using at least one of a Digital Signal Processor (DSP), a Field-Programmable Gate Array (FPGA), and a Programmable Logic Array (PLA). The processor 21 may also include a main processor and a coprocessor, where the main processor is a processor for Processing data in an awake state, and is also called a Central Processing Unit (CPU); a coprocessor is a low power processor for processing data in a standby state. In some embodiments, the processor 21 may be integrated with a Graphics Processing Unit (GPU) which is responsible for rendering and drawing the content required to be displayed by the display screen. In some embodiments, the processor 21 may further include an Artificial Intelligence (AI) processor for processing computational operations related to machine learning.
The memory 20 may include one or more computer-readable storage media, which may be non-transitory. Memory 20 may also include high speed random access memory, as well as non-volatile memory, such as one or more magnetic disk storage devices, flash memory storage devices. In this embodiment, the memory 20 is at least used for storing the following computer program 201, wherein after being loaded and executed by the processor 21, the computer program can implement the relevant steps of the range extender system control method disclosed in any of the foregoing embodiments. In addition, the resources stored in the memory 20 may also include an operating system 202, data 203, and the like, and the storage manner may be a transient storage manner or a permanent storage manner. Operating system 202 may include, among others, Windows, Unix, Linux, and the like. The data 203 may include, but is not limited to, a first threshold, a second threshold, vehicle status information, and the like.
In some embodiments, the range extender system control device may further include a display 22, an input/output interface 23, a communication interface 24, a power supply 25, and a communication bus 26.
Those skilled in the art will appreciate that the configuration shown in FIG. 4 does not constitute a limitation on the range extender system control apparatus and may include more or fewer components than those shown.
The range extender system control device provided by the embodiment of the application comprises a memory and a processor, wherein when the processor executes a program stored in the memory, the following method can be realized: acquiring the SOC of a vehicle battery or the required power for vehicle running; determining the deviation degree of the SOC or the required power and a corresponding preset threshold value; determining the number of the inputted range extenders according to the deviation degree; the deviation degree is positively correlated with the number of the range extenders.
The distance measuring device system control device provided by the embodiment of the application is applied to a distance measuring device system comprising a plurality of distance measuring devices, the deviation degree of SOC or required power and a corresponding preset threshold value is determined by acquiring the SOC of a vehicle battery or the required power of vehicle running, the number of the distance measuring devices is determined according to the deviation degree, and the deviation degree is positively correlated with the number of the distance measuring devices. Compared with the prior art, the range extender system cannot meet the vehicle running requirement due to the fact that the adjustable power output range is insufficient, the technical scheme is adopted, the SOC of a vehicle battery capable of reflecting the vehicle running requirement or the required power of vehicle running is collected, the number of the range extenders which are put into is determined according to the deviation degree of the SOC and the preset threshold value, more range extenders are put into when the deviation is larger, sufficient output power is provided, the vehicle running requirement is met, and the function diversity of the vehicle is expanded.
Finally, the application also provides a corresponding embodiment of the computer readable storage medium. The computer-readable storage medium has stored thereon a computer program which, when being executed by a processor, carries out the steps as set forth in the above-mentioned method embodiments.
It is to be understood that if the method in the above embodiments is implemented in the form of software functional units and sold or used as a stand-alone product, it can be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a storage medium and executes all or part of the steps of the methods described in the embodiments of the present application, or all or part of the technical solutions. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The above detailed description is provided for the control method, device and medium of the range extender system provided by the present application. The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Claims (10)

1. A range extender system control method is applied to a range extender system comprising a plurality of range extenders, and comprises the following steps:
acquiring the SOC of a vehicle battery or the required power for vehicle running;
determining the deviation degree of the SOC or the required power and a corresponding preset threshold value;
determining the number of the inputted range extenders according to the deviation degree; the deviation degree and the number of the range extenders are in positive correlation.
2. The range extender system control method of claim 1, wherein the range extender comprises a first range extender and a second range extender;
if the SOC is larger than the first threshold value, confirming not to put into the range extender;
if the SOC is smaller than the first threshold value and larger than a second threshold value, the first range extender is confirmed to be put into;
and if the SOC is smaller than the second threshold value, the first range extender and the second range extender are confirmed to be put into use.
3. The range extender system control method of claim 1, wherein the range extender comprises a first range extender and a second range extender;
if the required power is not larger than the discharging power of the vehicle battery, confirming not to put into the range extender;
if the required power is larger than the vehicle battery discharge power and the difference value is larger than 0 and not larger than the output power of the first range extender, confirming to input the first range extender;
and if the difference is larger than the output power of the first range extender, the first range extender and the second range extender are confirmed to be put into use.
4. The range extender system control method according to claim 2 or 3, further comprising, before the step of confirming whether to throw in the range extender,:
acquiring the state information of the whole vehicle;
and judging whether the vehicle has a fault according to the state information of the whole vehicle, if so, prohibiting to put in the range extender, and if not, entering a step of confirming whether to put in the range extender.
5. The range extender system control method of claim 4, further comprising, in a case where only the first range extender is activated:
acquiring the working time of the first range extender and the second range extender;
if the working time length of the first range extender is longer than that of the second range extender and the difference value is not smaller than the threshold value, the second range extender is used as the first range extender to be put into use;
wherein the first range extender is the range extender which is put in last time.
6. The range extender system control method of claim 5, further comprising:
determining a specific power output point according to the oil consumption characteristic of the range extender;
if the required power is not larger than the specific power output point, controlling equal power output of the first range extender and the second range extender to meet the required power;
if the output power is larger than the preset value, the first range extender is controlled to output full power, and the second range extender supplements the residual required power output to meet the required power.
7. The range extender system control method of claim 1, further comprising:
and if the range extender system fails, reducing the required power.
8. A range extender system control apparatus applied to a range extender system including a plurality of range extenders, the apparatus comprising:
the acquisition module is used for acquiring the SOC of a vehicle battery or the required power for vehicle running;
the determining module is used for determining the deviation degree of the SOC or the required power and a corresponding preset threshold value;
the input module is used for determining the number of input range extenders according to the deviation degree; the deviation degree and the number of the range extenders are in positive correlation.
9. A range extender system control apparatus comprising a memory for storing a computer program;
a processor for implementing the steps of the range extender system control method of any one of claims 1 to 7 when executing said computer program.
10. A computer-readable storage medium, characterized in that a computer program is stored thereon, which computer program, when being executed by a processor, carries out the steps of the range extender system control method of one of claims 1 to 7.
CN202210727086.2A 2022-06-24 2022-06-24 Range extender system control method, device and medium Pending CN114954428A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210727086.2A CN114954428A (en) 2022-06-24 2022-06-24 Range extender system control method, device and medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210727086.2A CN114954428A (en) 2022-06-24 2022-06-24 Range extender system control method, device and medium

Publications (1)

Publication Number Publication Date
CN114954428A true CN114954428A (en) 2022-08-30

Family

ID=82966375

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210727086.2A Pending CN114954428A (en) 2022-06-24 2022-06-24 Range extender system control method, device and medium

Country Status (1)

Country Link
CN (1) CN114954428A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116160875A (en) * 2023-04-23 2023-05-26 新誉轨道交通科技有限公司 Control method and control device of range extender system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116160875A (en) * 2023-04-23 2023-05-26 新誉轨道交通科技有限公司 Control method and control device of range extender system
CN116160875B (en) * 2023-04-23 2023-07-18 新誉轨道交通科技有限公司 Control method and control device of range extender system

Similar Documents

Publication Publication Date Title
JP5545373B2 (en) Vehicle battery diagnostic device
US8768553B2 (en) Method and system for controlling charging of battery for hybrid electric vehicle
CN106549432B (en) Charge control method and system for electric vehicle
CN103158716A (en) Technique for calculating distance to empty in electric vehicle
CN106274894B (en) Apparatus and method for controlling operation mode of hybrid vehicle
CN108528224A (en) The system and method for controlling the regenerative braking of environment-friendly type vehicle
CN108515961A (en) The DCDC control methods and system of 48V hybrid power systems
CN110293953A (en) Vehicle operation mode control method, device, equipment and readable storage medium storing program for executing
CN106476794A (en) The power operation control system of environmentally friendly vehicle and method
CN114954428A (en) Range extender system control method, device and medium
WO2024199305A1 (en) Engine start-stop control method and apparatus, and storage medium and vehicle
CN113830012B (en) Method, device, equipment and storage medium for diagnosing cause of high fuel consumption of vehicle
CN112660103B (en) Vehicle control mode determination method and device and whole vehicle control system
CN116749834A (en) Energy monitoring method and device for range-extended automobile
CN113696748B (en) Fuel cell power supply system, control method and control device thereof
CN115107735A (en) Power-shortage protection method of automobile battery pack and related device
CN114030458A (en) Hybrid vehicle control method, device, equipment and medium
CN111873818A (en) Range extender energy management method and device, vehicle and storage medium
CN114643948B (en) Whole vehicle fault level diagnosis method for pure electric vehicle
CN115476840A (en) Battery charging method, device, vehicle and medium
CN113580939B (en) Power conservation method for vehicle-mounted battery, vehicle and readable storage medium
CN114919565A (en) Vehicle and torque control method and system thereof
CN110030095A (en) The engine control and system of hybrid electric vehicle
CN114919567A (en) Hybrid vehicle driving mode control method, device, equipment and medium
CN115158099A (en) Power battery thermal management method and device, vehicle and storage medium

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination