CN116620115A - Power adjustment method, device, vehicle management equipment and readable storage medium - Google Patents
Power adjustment method, device, vehicle management equipment and readable storage medium Download PDFInfo
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- 238000011217 control strategy Methods 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 description 15
- 238000001816 cooling Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 9
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- 238000010586 diagram Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
- B60L58/27—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by heating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K11/00—Arrangement in connection with cooling of propulsion units
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
- B60L58/26—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by cooling
-
- 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
- B60L2240/40—Drive Train control parameters
- B60L2240/42—Drive Train control parameters related to electric machines
- B60L2240/425—Temperature
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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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/545—Temperature
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- 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
Abstract
The application is applicable to the technical field of vehicle control, and provides a power adjustment method, a device, vehicle management equipment and a readable storage medium, wherein the method comprises the following steps: acquiring navigation information of the vehicle; acquiring the current vehicle state of the vehicle; and adjusting the power of a thermal management system of the vehicle according to the navigation information and the vehicle state. By the method, the power control strategy of the thermal management system can be optimized, the effective utilization rate of heat energy is improved, and the energy consumption of the thermal management system of the vehicle is further reduced.
Description
Technical Field
The application belongs to the technical field of vehicle control, and particularly relates to a power adjustment method, a power adjustment device, vehicle management equipment and a readable storage medium.
Background
The operation of a vehicle depends on the cooperation of the various components, and the ability of the components to function properly typically requires that the components be within a predetermined temperature range.
At present, the heat energy consumption of an automobile is managed through a heat management system of the automobile, so that components of the automobile are ensured to be in a preset temperature range. For example, after the thermal management system detects that the temperature of the battery of the automobile is low, the battery is heated and controlled through adjustment of power so as to ensure that the temperature of the battery is within a preset temperature range. However, when the existing thermal management system is used for heating control or cooling control, energy is still wasted.
Disclosure of Invention
The embodiment of the application provides a power adjustment method, a device, vehicle management equipment and a readable storage medium, which can solve the problems of lower accuracy and higher energy consumption in the prior method for adjusting power.
In a first aspect, an embodiment of the present application provides a power adjustment method, applied to a vehicle, including:
acquiring navigation information of the vehicle;
acquiring the current vehicle state of the vehicle;
adjusting the power of a thermal management system of the vehicle according to the navigation information and the vehicle state;
the adjusting the power of the thermal management system of the vehicle according to the navigation information and the vehicle state comprises:
predicting real-time required power of the thermal management system in the current journey of the vehicle according to the navigation information to obtain first power;
determining the current power of the thermal management system according to the vehicle state to obtain second power;
determining a target power according to the first power and the second power;
and adjusting the current power of the thermal management system according to the target power.
In the embodiment of the application, considering that the navigation information reflects the driving information of the vehicle, for example, reflects the travel residual time of the vehicle when the vehicle is driving this time, and the thermal management system needs a certain time to enable the controlled object to reach a certain temperature when performing cooling control or heating control, before adjusting the power of the thermal management system, the power of the thermal management system is comprehensively judged whether to be required to be adjusted according to the acquired navigation information and the vehicle state, for example, when the travel residual time is shorter, the power of the thermal management system is less adjusted, namely, compared with the power adjusted according to the vehicle state only, the power is adjusted according to the navigation information and the vehicle state, so that the accuracy of the adjusted power can be improved, the effective utilization rate of the thermal energy can be improved, and the energy consumption of the vehicle in the current travel is reduced. In addition, since the navigation information reflects the driving information of the vehicle in the subsequent journey (i.e. the journey reaching the destination), and the vehicle state reflects the current driving information of the vehicle, the embodiment of the application determines the first power (i.e. the real-time required power of the thermal management system) and the second power (i.e. the current power of the thermal management system) according to the navigation information and the vehicle state respectively, so that the accuracy of the obtained first power and second power can be improved, and the accuracy of the obtained target power and the accuracy of the power adjustment of the thermal management system can be improved.
In a possible implementation manner of the first aspect, the predicting, according to the navigation information, real-time required power of the thermal management system during the present trip of the vehicle includes:
predicting a target prediction parameter value according to the navigation information, wherein the target prediction parameter value comprises at least one of the following: total power consumption, travel remaining time, temperature of the motor and temperature of the battery;
and predicting the real-time required power of the thermal management system in the current journey of the vehicle according to the target prediction parameter value.
In a possible implementation manner of the first aspect, the target prediction parameter includes the trip remaining time, the first power is in a positive correlation with the trip remaining time, and the determining the target power according to the first power and the second power includes:
determining a weight value of the first power according to the travel residual time, wherein the weight value of the first power and the travel residual time form a negative correlation;
determining a weight value of the second power according to the weight value of the first power;
and determining target power according to the first power, the weight value of the first power, the second power and the weight value of the second power.
In a possible implementation manner of the first aspect, the target prediction parameter value includes a trip remaining time, and before the adjusting the power of the thermal management system of the vehicle according to the navigation information and the vehicle state, the method further includes:
judging whether the travel residual time is larger than a preset time threshold value or not;
the adjusting the power of the thermal management system of the vehicle according to the navigation information and the vehicle state comprises:
and adjusting the power of a thermal management system of the vehicle according to the navigation information and the vehicle state when the journey remaining time is larger than the time threshold.
In a possible implementation manner of the first aspect, the power adjustment method further includes:
in the event that the travel remaining time is not greater than the time threshold, no adjustment is made to the power of the thermal management system of the vehicle.
In a possible implementation manner of the first aspect, the vehicle state includes at least one of: the operating state of the motor, the state of the battery, and the state of the thermal management system.
In a second aspect, an embodiment of the present application provides a power adjustment device, applied to a vehicle, including:
The navigation information acquisition module is used for acquiring the navigation information of the vehicle;
the vehicle state acquisition module is used for acquiring the current vehicle state of the vehicle;
the power adjustment module is used for adjusting the power of the thermal management system of the vehicle according to the navigation information and the vehicle state;
the power adjustment module includes:
the first power determining unit is used for predicting the real-time required power of the thermal management system of the vehicle in the current journey according to the navigation information to obtain first power;
a second power determining unit, configured to determine a current power of the thermal management system according to the vehicle state, to obtain a second power;
a target power determining unit configured to determine a target power according to the first power and the second power;
and the power adjusting unit is used for adjusting the current power of the thermal management system according to the target power.
In a third aspect, an embodiment of the present application provides a vehicle management apparatus, including a memory, a processor, and a computer program stored in the memory and executable on the processor, the processor implementing the method according to the first aspect when executing the computer program.
In a fourth aspect, embodiments of the present application provide a computer readable storage medium storing a computer program which, when executed by a processor, implements a method according to the first aspect.
In a fifth aspect, an embodiment of the application provides a computer program product for, when run on a vehicle management device, causing the vehicle management device to perform the method of any of the first aspects described above.
It will be appreciated that the advantages of the second to fifth aspects may be found in the relevant description of the first aspect, and are not described here again.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings used in the description of the embodiments or the prior art will be briefly described below.
Fig. 1 is a flowchart of a power adjustment method according to an embodiment of the present application;
FIG. 2 is a flow chart illustrating another power adjustment method according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a power adjustment device according to an embodiment of the present application;
fig. 4 is a schematic structural view of a 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 the particular system architecture, 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.
It should be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It should also be understood that the term "and/or" as used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.
Furthermore, in the description of the present specification and the appended claims, the terms "first," "second," and the like are used merely to distinguish between descriptions and are not to be construed as indicating or implying relative importance.
Reference in the specification to "one embodiment" or "some embodiments" or the like means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," and the like in the specification are not necessarily all referring to the same embodiment, but mean "one or more but not all embodiments" unless expressly specified otherwise.
Embodiment one:
when the heating control or the cooling control is performed by the thermal management system, if it is determined whether the heating control or the cooling control is required for the vehicle only according to the current vehicle state of the vehicle, there may be a case where thermal energy is wasted. For example, if the temperature of the battery of the vehicle is determined to be low according to the current temperature of the battery, and then the battery is selected to be heated, however, since a process is required for heating, if the vehicle reaches the destination at this time, the vehicle stops traveling after the vehicle reaches the destination, that is, the temperature of the battery does not affect the vehicle, the heating operation is still performed on the battery at this time, which results in waste of heat energy used for heating.
In order to reduce the occurrence of heat energy waste and improve the utilization rate of heat energy, the embodiment of the application provides a power adjustment method. In the power adjustment method, power of a thermal management system of a vehicle is adjusted according to navigation information and a current vehicle state of the vehicle.
The power adjustment method provided by the embodiment of the application is described below with reference to the accompanying drawings.
Fig. 1 shows a flow chart of a power adjustment method according to an embodiment of the present application, where the power adjustment method is applied to a vehicle (such as a vehicle including a motor), and the detailed description is as follows:
s11, acquiring navigation information of the vehicle.
Specifically, if the vehicle is navigating by using the internet of vehicles system during running, the navigation information can be obtained from the internet of vehicles system; if the user uses the terminal equipment (such as a mobile phone) in the vehicle to navigate the vehicle, the vehicle can acquire navigation information corresponding to the running of the vehicle from the mobile phone after the communication connection between the vehicle and the mobile phone is established.
In some embodiments, the navigation information includes at least one of: road traffic flow, road vehicle speed limit, traffic signal lamp information (such as the number of traffic signal lamps, the duration of forbidden traffic corresponding to different signal lamps, etc.), and the distance from the current journey to the destination. The road traffic flow is information related to the flow of traffic on the road, such as whether the flow of traffic on each lane on the road is large.
In some embodiments, the navigation information may be acquired at different times, considering that the road traffic flow is a changing message. For example, in the vehicle navigation process, corresponding navigation information is acquired according to a preset first interval time.
S12, acquiring the current vehicle state of the vehicle.
Specifically, during the running of the vehicle, the current vehicle state of the vehicle is acquired. For example, assuming that the current time is the time t, the vehicle state acquired at the time t is the current vehicle state of the vehicle.
In some embodiments, the vehicle state described above includes at least one of: the operating state of the motor, the state of the battery, and the state of the thermal management system. The running state of the motor comprises the temperature of the motor, and can also comprise the torque, the rotating speed and the like of the motor; the state of the battery includes the temperature of the battery, and may also include the current and voltage of the battery; the state of the thermal management system includes the power output by the thermal management system.
In some embodiments, the vehicle state may be acquired at different times, taking into account information about the vehicle state, the length of travel, etc., i.e., the vehicle state is a change. For example, during the running of the vehicle, the corresponding vehicle state is obtained according to the preset second interval time. The second interval may be the same as or different from the first interval, which is not limited herein.
S13, adjusting the power of a thermal management system of the vehicle according to the navigation information and the vehicle state.
Wherein the power output by the thermal management system is used for heating control or cooling control. It should be noted that the object to be subjected to heating control (or cooling control) may be a motor or a battery. Of course, in actual situations, the object of heating control (or cooling control) may be other components, which will not be described in detail herein.
Specifically, an adjustment value may be determined according to the navigation information and the vehicle state, and then the current power (or power value) of the thermal management system is adjusted according to the adjustment value, for example, the current power value and the adjustment value are added or subtracted to obtain an adjusted power value corresponding to the thermal management system. The final power value can be determined according to the navigation information and the vehicle state, and then the current power value of the thermal management system is adjusted to the final power value, and the power of the thermal management system is only needed to be adjusted according to the navigation information and the vehicle state.
In some embodiments, the determining the power corresponding to the thermal management system according to the navigation information and the vehicle state, and adjusting the power of the thermal management system according to the fusion result of the two powers, where S13 includes:
A1, predicting real-time required power of the thermal management system of the vehicle in the current journey according to the navigation information to obtain first power.
Specifically, a mapping relation between navigation information and real-time required power of a thermal management system of a vehicle in different strokes can be preset, and after the navigation information of the vehicle is obtained at a certain moment, the power corresponding to the navigation information can be searched according to the mapping relation, so that the first power is obtained. In some embodiments, the first power prediction model established based on the neural network may also be trained by a large amount of navigation information, and after the navigation information of the vehicle is acquired at a certain moment, the navigation information may be input into the trained first power prediction model to obtain the first power output by the trained first power prediction model.
Of course, in actual situations, other methods may be used to calculate the first power, which will not be described in detail herein.
A2, determining the current power of the thermal management system according to the vehicle state to obtain second power.
Specifically, a mapping relation between a vehicle state and the power of the thermal management system may be preset, and after the vehicle state of the vehicle is obtained at a certain moment, the power of the thermal management system corresponding to the vehicle state may be searched according to the mapping relation, so as to obtain the second power; or, a mapping relation between the temperature of the motor, the temperature of the battery and the power of the thermal management system is preset, when the vehicle state comprises the running state of the motor and the state of the battery, the temperature of the motor is obtained from the running state of the motor, the temperature of the battery is obtained from the state of the battery, and the power of the thermal management system is determined according to the temperature of the motor, the temperature of the battery and the preset mapping relation, so that the second power is obtained.
In some embodiments, the second power prediction model established based on the neural network may also be trained through a large number of vehicle states, and after the vehicle state is acquired at a certain moment, the vehicle state may be input into the trained second power prediction model, so as to obtain the second power output by the trained second power prediction model.
Of course, in actual situations, other methods may be used to calculate the second power, which will not be described in detail herein.
A3, determining target power according to the first power and the second power.
Specifically, different weight values may be assigned to the first power and the second power, respectively, to calculate the target power. Of course, the first power may be selected as the target power when a preset first condition is satisfied, and the second power may be selected as the target power when a preset second condition is satisfied, where the first and second conditions may be set according to actual situations, and are not limited herein.
A4, adjusting the current power of the thermal management system of the vehicle according to the target power.
Specifically, when the target power is the final power, the current power of the thermal management system is directly modified to the target power, i.e. the target power is used as the power after the thermal management system is adjusted; when the target power is the differential power, the target power is added on the basis of the current power of the thermal management system, and the sum is obtained and used as the power after the thermal management system is adjusted.
In the embodiment of the application, considering that the navigation information reflects the driving information of the vehicle, for example, reflects the travel residual time of the vehicle when the vehicle is driving this time, and the thermal management system needs a certain time to enable the controlled object to reach a certain temperature when performing cooling control or heating control, before adjusting the power of the thermal management system, the power of the thermal management system is comprehensively judged whether to be required to be adjusted according to the acquired navigation information and the vehicle state, for example, when the travel residual time is shorter, the power of the thermal management system is less adjusted, namely, compared with the power adjusted according to the vehicle state only, the power is adjusted according to the navigation information and the vehicle state, so that the accuracy of the adjusted power can be improved, the effective utilization rate of the thermal energy can be improved, and the energy consumption of the vehicle in the current travel is reduced. In addition, since the navigation information reflects the driving information of the vehicle in the subsequent journey (i.e. the journey reaching the destination), and the vehicle state reflects the current driving information of the vehicle, the embodiment of the application determines the first power (i.e. the real-time required power of the thermal management system) and the second power (i.e. the current power of the thermal management system) according to the navigation information and the vehicle state respectively, so that the accuracy of the obtained first power and second power can be improved, and the accuracy of the obtained target power and the accuracy of the power adjustment of the thermal management system can be improved.
It should be noted that, in the embodiment of the present application, the navigation information and the vehicle state may be acquired at intervals, and the power of the thermal management system of the vehicle may be adjusted after the navigation information and the vehicle state are acquired. That is, in the embodiment of the present application, the acquisition of the navigation information and the vehicle state and the adjustment of the power are closed-loop processes, for example, the vehicle state will change after the current power adjustment of the thermal management system, so that the power of the thermal management system will be newly adjusted according to the newly acquired vehicle state and the navigation information at the next moment. That is, as long as the vehicle is still running, the navigation information and the vehicle state can be dynamically acquired, and further, the power of the thermal management system can be adjusted by updating more accurate information, so that the accuracy of adjustment is improved.
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, and should not limit the implementation process of the embodiment of the present application.
Embodiment two:
in some embodiments, the A1 provided in the embodiments of the present application includes:
A11, predicting a target prediction parameter value according to the navigation information, wherein the target prediction parameter value comprises at least one of the following: total power consumption (i.e., the energy to drive the motor), travel remaining time, temperature of the motor, and temperature of the battery.
A12, predicting the real-time required power of the thermal management system of the vehicle in the current journey according to the target prediction parameter value.
Specifically, the power is considered to be related to target prediction parameters such as total power consumption, travel remaining time, temperature of the motor and/or temperature of the battery, so that the target prediction parameters are determined according to the navigation information, and then the corresponding power is predicted according to the target prediction parameters, thereby being beneficial to improving the accuracy of the predicted power.
In some embodiments, when the target predicted parameter values include total power consumption, trip remaining time, temperature of the motor, and temperature of the battery, the real-time required power of the thermal management system of the vehicle in the present trip may be predicted according to the following manner:
after the temperature rise of the motor (i.e., the temperature higher than the current time) and the temperature rise of the battery are calculated from the total power consumption, the temperature at which the motor reaches the destination (i.e., the temperature of the motor described above) is predicted from the calculated temperature rise of the motor and the initial temperature of the motor (i.e., the temperature of the motor at the time of acquiring the vehicle state), and the temperature at which the battery reaches the destination is predicted from the calculated temperature rise of the battery and the initial temperature of the battery (i.e., the temperature of the battery at the time of acquiring the vehicle state). After the stroke residual time, the temperature of the motor and the temperature of the battery are obtained, the real-time required power of the thermal management system corresponding to the obtained stroke residual time, the temperature of the motor and the temperature of the battery is found out according to the pre-established mapping relation between parameter values (such as the stroke residual time, the temperature of the motor and the temperature of the battery) and the power.
In some embodiments, the target prediction parameter includes the trip remaining time, the first power and the trip remaining time are in positive correlation, and the A3 includes:
a31, determining a weight value of the first power according to the travel residual time, wherein the weight value of the first power and the travel residual time form a negative correlation.
A32, determining the weight value of the second power according to the weight value of the first power.
A33, determining the target power according to the first power, the weight value of the first power, the second power and the weight value of the second power.
Specifically, in the mapping relationship between the established navigation information and the real-time required power of the thermal management system in the current trip, the trip residual time and the real-time required power (i.e. the first power) of the thermal management system in the current trip are in a positive correlation relationship. I.e. the shorter the stroke duration, the smaller the first power, so that when the first power is determined on the basis of its weight value being inversely related to the stroke duration, the weight value of the first power will be inversely related to the stroke duration. That is, the shorter the stroke remaining time, the larger the weight value of the first power, that is, the larger the first power has an influence when determining the target power. That is, in the embodiment of the present application, if the stroke remaining time is shorter, the first power is smaller, and the weight of the first power is larger, so that the target power is also smaller. When the current power of the thermal management system is adjusted according to the smaller target power, the power of the thermal management system can be effectively reduced, so that the actual energy consumed by the vehicle is smaller.
In some embodiments, the target prediction parameter value includes a trip remaining time, and before the step S13, the method further includes:
and judging whether the travel residual time is larger than a preset time threshold value.
Correspondingly, the step S13 includes:
and adjusting the power of the thermal management system of the vehicle according to the navigation information and the vehicle state when the journey remaining time is greater than the time threshold.
In some embodiments, the power adjustment method further includes:
in the case where the trip remaining time is not greater than the time threshold, power of a thermal management system of the vehicle is not adjusted.
The preset time threshold may be set according to practical situations, for example, may be set to 5 minutes or 10 minutes, and is not specifically limited herein.
In some embodiments, the above-described time threshold may also be determined in conjunction with current environmental information of the vehicle. For example, when the current environmental information of the vehicle satisfies a preset environmental condition (such as an excessively high or excessively low temperature), the set time threshold is set to a shorter value (such as set to 5 minutes), and otherwise, is set to a longer value (such as set to 10 minutes) to improve the accuracy of the set time threshold.
In the embodiment of the application, the power of the thermal management system is adjusted only when the travel remaining time is judged to be greater than the time threshold, namely after the vehicle is judged to still continue to travel for a period of time, otherwise, the power of the thermal management system is not adjusted. For example, after determining that the temperature of the battery is low, the thermal management system does not directly perform heating control on the battery, but further compares the travel remaining time of the vehicle with a preset time threshold, and if it is determined that the travel remaining time of the vehicle (assuming 4 minutes) is less than the time threshold (assuming 5 minutes), that is, the vehicle stops traveling after 4 minutes, the heating control on the battery will not be performed. This is because it takes a certain time to heat the battery, and the vehicle itself reaches the destination soon, and therefore, if the battery is still heated, energy required for heating is wasted.
In order to more clearly describe the power adjustment method provided by the embodiment of the present application, the following description is made in connection with a specific model.
The energy flow model is assumed to be formulated as follows:
in the above-mentioned formula(s),representing the total energy consumption of the vehicle, +.>Indicating the total heat energy consumption of the vehicle, < > >Representing the energy consumption of the vehicle power, i.e. the energy consumption of the drive motor, +.>Representing the energy consumption of a thermal system management system +.>Indicating the energy consumption of the motor, < > or >>Indicating battery power consumption, < >> Respectively, the specific heat capacity of the motor, the mass of the motor, the specific heat capacity of the battery, the mass of the battery, the temperature of the motor, the temperature of the battery, the initial temperature of the motor, the initial temperature of the battery, the power of the thermal management system, and the travel remaining time.
State variable (k is a time variable):
it should be noted that, aboveComprising the temperature of the motor when the vehicle arrives at the destination predicted from the navigation information, and also comprising the temperature of the motor obtained from the running state of the motor in the state of the vehicle, said>Including the temperature of the battery when the vehicle reaches the destination, predicted from the navigation information, and also including the temperature of the battery obtained from the state of the battery among the states of the vehicle.
Input variables (i.e., variables input to the thermal management system):
output variable:
the predictive equation:
for the system matrix->For controlling the input matrix>Is an output matrix. Wherein (1)>Are all determined according to the parameters of the predictive equation (or predictive model), and +.>Is constant.
The cost function for achieving smaller energy consumption is assumed as follows:
Wherein R is a constant matrix which is the expected energy consumption, p and q are preset weight matrices,is according to->The determined matrix.
Constraint formula:
performance index function:
wherein, the liquid crystal display device comprises a liquid crystal display device,the values determined in the prediction time domain (i.e., the predicted time domain of the power of the thermal management system) and the control time domain (i.e., the controlled time domain of the power of the thermal management system), respectively, are constant.
In conjunction with another flow chart of power adjustment shown in fig. 2, the algorithm flow corresponding to the above model is as follows:
step 1: an energy flow model is obtained and state variables are initialized.
At any time instant k >0, performing:
step 2: and updating the prediction equation of the energy flow model and the information of the state variables in the model prediction control module according to the navigation information and the vehicle state.
Step 3: optimizing (performance index function) under the constraint of (constraint formula) to obtain P (k+1) output after rolling optimization.
Step 4: applying the resulting P (k+1) to the power of the thermal management system (i.e., the controlled object of fig. 2);
step 5: model prediction is carried out: based on the current time
。
Step 6: and correcting the vehicle state according to the model prediction result and the information fed back by the controlled object, and returning to the execution step 2 until the current journey is finished.
Embodiment III:
corresponding to the power adjustment methods described in the first and second embodiments, fig. 3 shows a block diagram of a power adjustment device according to an embodiment of the present application, and for convenience of explanation, only the portions related to the embodiment of the present application are shown.
Referring to fig. 3, the power adjustment device 3 is applied to a vehicle, and includes:
the navigation information acquisition module 31 is configured to acquire navigation information of the vehicle.
In some embodiments, the navigation information includes at least one of: road traffic flow, road vehicle speed limit, traffic signal lamp information (such as the number of traffic signal lamps, the duration of forbidden traffic corresponding to different signal lamps, etc.), and the distance from the current journey to the destination. The road traffic flow is information related to the flow of traffic on the road, such as whether the flow of traffic on each lane on the road is large.
In some embodiments, the navigation information may be acquired at different times, considering that the road traffic flow is a changing message. For example, in the vehicle navigation process, corresponding navigation information is acquired according to a preset first interval time.
The vehicle state acquisition module 32 is configured to acquire the current vehicle state of the vehicle.
In some embodiments, the vehicle state described above includes at least one of: the operating state of the motor, the state of the battery, and the state of the thermal management system. The running state of the motor comprises the temperature of the motor, and can also comprise the torque, the rotating speed and the like of the motor; the state of the battery includes the temperature of the battery, and may also include the current and voltage of the battery; the state of the thermal management system includes the power output by the thermal management system.
In some embodiments, the vehicle state may be acquired at different times, taking into account information about the vehicle state, the length of travel, etc., i.e., the vehicle state is a change. For example, during the running of the vehicle, the corresponding vehicle state is obtained according to the preset second interval time. The second interval time may be the same as or different from the first interval time.
And a power adjustment module 33 for adjusting the power of the thermal management system of the vehicle according to the navigation information and the vehicle state.
Specifically, an adjustment value may be determined according to the navigation information and the vehicle state, and then the current power (or power value) of the thermal management system is adjusted according to the adjustment value, for example, the current power value and the adjustment value are added or subtracted to obtain an adjusted power value corresponding to the thermal management system. The final power value can be determined according to the navigation information and the vehicle state, and then the current power value of the thermal management system is adjusted to the final power value, and the power of the thermal management system is only needed to be adjusted according to the navigation information and the vehicle state.
In some embodiments, the power adjustment module 33 includes:
and the first power determining unit is used for predicting the real-time required power of the thermal management system of the vehicle in the current journey according to the navigation information to obtain first power.
And the second power determining unit is used for determining the current power of the thermal management system according to the vehicle state to obtain second power.
And the target power determining unit is used for determining target power according to the first power and the second power.
And the power adjusting unit is used for adjusting the current power of the thermal management system according to the target power.
In the embodiment of the application, considering that the navigation information reflects the driving information of the vehicle, for example, reflects the travel residual time of the vehicle when the vehicle is driving, and the thermal management system needs a certain time to enable the controlled object to reach a certain temperature when cooling control or heating control is carried out, before the power of the thermal management system is adjusted, whether the power of the thermal management system needs to be adjusted or not is comprehensively judged according to the acquired navigation information and the vehicle state, for example, when the travel residual time is shorter, the power of the thermal management system is adjusted less, namely, compared with the power adjusted only according to the vehicle state, the power control strategy of the thermal management system is optimized, the effective utilization rate of the thermal energy is improved, and the energy consumption of the thermal management system of the vehicle is further reduced. In addition, since the navigation information reflects the driving information of the vehicle in the subsequent journey (i.e. the journey reaching the destination), and the vehicle state reflects the current driving information of the vehicle, the embodiment of the application determines the first power (i.e. the real-time required power of the thermal management system) and the second power (i.e. the current power of the thermal management system) according to the navigation information and the vehicle state respectively, so that the accuracy of the obtained first power and second power can be improved, and the accuracy of the obtained target power and the accuracy of the power adjustment of the thermal management system can be improved.
In some embodiments, the first power determining unit, when predicting the real-time required power of the thermal management system of the vehicle in the current trip according to the navigation information, includes:
predicting a target prediction parameter value according to the navigation information, wherein the target prediction parameter value comprises at least one of the following: total power consumption, travel remaining time, temperature of the motor and temperature of the battery;
and predicting the real-time required power of the thermal management system in the current journey of the vehicle according to the target prediction parameter value.
In some embodiments, the target prediction parameter includes the trip remaining time, the first power and the trip remaining time are in positive correlation, and the target power determining unit includes:
and the weight value determining unit is used for determining the weight value of the first power according to the stroke residual time, wherein the weight value of the first power and the stroke residual time form a negative correlation.
And the weight value determining unit is used for determining the weight value of the second power according to the weight value of the first power.
And the fusion unit is used for determining the target power according to the first power, the weight value of the first power, the second power and the weight value of the second power.
In some embodiments, the target prediction parameter value includes a trip remaining time, and the power adjustment device 3 further includes:
a trip remaining time comparing module for determining whether the trip remaining time is greater than a preset time threshold before adjusting the power of the thermal management system of the vehicle according to the navigation information and the vehicle state;
correspondingly, the power adjustment module is specifically configured to:
and adjusting the power of the thermal management system of the vehicle according to the navigation information and the vehicle state when the journey remaining time is greater than the time threshold.
In some embodiments, the power adjustment device 3 further includes:
and the non-response module is used for not adjusting the power of the thermal management system of the vehicle under the condition that the travel remaining time is not greater than the time threshold.
In some embodiments, the vehicle state includes at least one of: the operating state of the motor, the state of the battery, and the state of the thermal management system.
It should be noted that, because the content of information interaction and execution process between the above devices/units is based on the same concept as the method embodiment of the present application, specific functions and technical effects thereof may be referred to in the method embodiment section, and will not be described herein.
Embodiment four:
fig. 4 is a schematic structural diagram of a vehicle management apparatus according to an embodiment of the present application. As shown in fig. 4, the vehicle management apparatus 4 of this embodiment includes: at least one processor 40 (only one processor is shown in fig. 4), a memory 41 and a computer program 42 stored in the memory 41 and executable on the at least one processor 40, the processor 40 implementing the steps in any of the various method embodiments described above when executing the computer program 42.
The vehicle management device 4 may include, but is not limited to, a processor 40, a memory 41. It will be appreciated by those skilled in the art that fig. 4 is merely an example of the vehicle management device 4 and is not meant to be limiting of the vehicle management device 4, and may include more or fewer components than shown, or may combine certain components, or may include different components, such as input-output devices, network access devices, etc.
The processor 40 may be a central processing unit (Central Processing Unit, CPU), the processor 40 may also be other general purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), field-programmable gate arrays (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 41 may in some embodiments be an internal storage unit of the vehicle management device 4, such as a hard disk or a memory of the vehicle management device 4. The memory 41 may in other embodiments also be an external storage device of the vehicle management device 4, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash Card (Flash Card) or the like, which are provided on the vehicle management device 4. Further, the memory 41 may also include both an internal storage unit and an external storage device of the vehicle management device 4. The memory 41 is used for storing an operating system, application programs, boot loader (BootLoader), data, other programs, etc., such as program codes of the computer program. The memory 41 may also be used for temporarily storing data that has been output or is to be output.
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. In addition, the specific names of the functional units and modules are only for distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working process of the units and modules in the above system may refer to the corresponding process in the foregoing method embodiment, which is not described herein again.
The embodiment of the application also provides a network device, which comprises: at least one processor, a memory, and a computer program stored in the memory and executable on the at least one processor, which when executed by the processor performs the steps of any of the various method embodiments described above.
Embodiments of the present application also provide a readable storage medium (e.g., a computer readable storage medium) storing a computer program that, when executed by a processor, performs the steps of the method embodiments described above.
Embodiments of the present application provide a computer program product which, when run on a vehicle management device, causes the vehicle management device to perform the steps of the method embodiments described above.
The integrated 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 above embodiments, and may be implemented by a computer program to instruct related hardware, where the computer program may be stored in a computer readable storage medium, and when the computer program is executed by a processor, the computer program may implement the steps of each of the method embodiments described above. Wherein the computer program comprises computer program code which may be in source code form, object code form, executable file or some intermediate form etc. The computer readable medium may include at least: any entity or device capable of carrying computer program code to the photographing apparatus/vehicle management apparatus, recording medium, computer Memory, read-Only Memory (ROM), random access Memory (RAM, random Access Memory), electrical carrier signals, telecommunications signals, and software distribution media. Such as a U-disk, removable hard disk, magnetic or optical disk, etc. In some jurisdictions, computer readable media may not be electrical carrier signals and telecommunications signals in accordance with legislation and patent practice.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and in part, not described or illustrated in any particular embodiment, reference is made to the related descriptions of other embodiments.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus/network device and method may be implemented in other manners. For example, the apparatus/network device embodiments described above are merely illustrative, e.g., the division of the modules or units is merely a logical functional division, and there may be additional divisions in actual implementation, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection via interfaces, devices or units, which may be in electrical, mechanical or other forms.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
The above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will 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 (9)
1. A power adjustment method, applied to a vehicle, comprising:
acquiring navigation information of the vehicle;
acquiring the current vehicle state of the vehicle;
adjusting the power of a thermal management system of the vehicle according to the navigation information and the vehicle state;
The adjusting the power of the thermal management system of the vehicle according to the navigation information and the vehicle state comprises:
predicting real-time required power of the thermal management system in the current journey of the vehicle according to the navigation information to obtain first power;
determining the current power of the thermal management system according to the vehicle state to obtain second power;
determining a target power according to the first power and the second power;
and adjusting the current power of the thermal management system according to the target power.
2. The power adjustment method as set forth in claim 1, wherein said predicting the real-time required power of the thermal management system of the vehicle in the present trip based on the navigation information includes:
predicting a target prediction parameter value according to the navigation information, wherein the target prediction parameter value comprises at least one of the following: total power consumption, travel remaining time, temperature of the motor and temperature of the battery;
and predicting the real-time required power of the thermal management system in the current journey of the vehicle according to the target prediction parameter value.
3. The power adjustment method of claim 2, wherein the target prediction parameter includes the trip remaining time, the first power is in positive correlation with the trip remaining time, and the determining the target power from the first power and the second power includes:
Determining a weight value of the first power according to the travel residual time, wherein the weight value of the first power and the travel residual time form a negative correlation;
determining a weight value of the second power according to the weight value of the first power;
and determining target power according to the first power, the weight value of the first power, the second power and the weight value of the second power.
4. The power adjustment method of claim 2, wherein the target predicted parameter value includes a trip remaining time, further comprising, prior to said adjusting power of a thermal management system of the vehicle based on the navigation information and the vehicle state:
judging whether the travel residual time is larger than a preset time threshold value or not;
the adjusting the power of the thermal management system of the vehicle according to the navigation information and the vehicle state comprises:
and adjusting the power of a thermal management system of the vehicle according to the navigation information and the vehicle state when the journey remaining time is larger than the time threshold.
5. The power adjustment method of claim 4, wherein the power adjustment method further comprises:
In the event that the travel remaining time is not greater than the time threshold, no adjustment is made to the power of the thermal management system of the vehicle.
6. The power adjustment method according to any one of claims 1 to 5, characterized in that the vehicle state includes at least one of: the operating state of the motor, the state of the battery, and the state of the thermal management system.
7. A power adjustment device, characterized by being applied to a vehicle, comprising:
the navigation information acquisition module is used for acquiring the navigation information of the vehicle;
the vehicle state acquisition module is used for acquiring the current vehicle state of the vehicle;
the power adjustment module is used for adjusting the power of the thermal management system of the vehicle according to the navigation information and the vehicle state;
the power adjustment module includes:
the first power determining unit is used for predicting the real-time required power of the thermal management system of the vehicle in the current journey according to the navigation information to obtain first power;
a second power determining unit, configured to determine a current power of the thermal management system according to the vehicle state, to obtain a second power;
a target power determining unit configured to determine a target power according to the first power and the second power;
And the power adjusting unit is used for adjusting the current power of the thermal management system according to the target power.
8. A vehicle management apparatus comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor implements the method of any one of claims 1 to 6 when executing the computer program.
9. A readable storage medium storing a computer program, which when executed by a processor implements the method of any one of claims 1 to 6.
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