WO2022042408A1 - 一种车辆冷却控制方法、系统及车辆 - Google Patents

一种车辆冷却控制方法、系统及车辆 Download PDF

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Publication number
WO2022042408A1
WO2022042408A1 PCT/CN2021/113432 CN2021113432W WO2022042408A1 WO 2022042408 A1 WO2022042408 A1 WO 2022042408A1 CN 2021113432 W CN2021113432 W CN 2021113432W WO 2022042408 A1 WO2022042408 A1 WO 2022042408A1
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WIPO (PCT)
Prior art keywords
cooling
value
demand value
demand
vehicle
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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.)
Ceased
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PCT/CN2021/113432
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English (en)
French (fr)
Inventor
李雪猛
李超
范皓龙
刘震辉
孙明
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Great Wall Motor Co Ltd
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Great Wall Motor Co Ltd
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Publication date
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Priority to US18/010,395 priority Critical patent/US12257890B2/en
Priority to EP21860246.4A priority patent/EP4155100A4/en
Publication of WO2022042408A1 publication Critical patent/WO2022042408A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
    • 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
    • B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating devices
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/0073—Control systems or circuits characterised by particular algorithms or computational models, e.g. fuzzy logic or dynamic models
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating devices
    • B60H1/32—Cooling devices
    • 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
    • B60K11/06—Arrangement in connection with cooling of propulsion units with air cooling
    • 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
    • B60K11/08—Air inlets for cooling; Shutters or blinds therefor
    • B60K11/085—Air inlets for cooling; Shutters or blinds therefor with adjustable shutters or blinds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/30—Sensors
    • B60Y2400/302—Temperature sensors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/40—Actuators for moving a controlled member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/02—Controlling of coolant flow the coolant being cooling-air
    • F01P7/04—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio
    • 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
    • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/88—Optimized components or subsystems, e.g. lighting, actively controlled glasses

Definitions

  • the present disclosure relates to the technical field of automobiles, and in particular, to a vehicle cooling control method, system, and vehicle.
  • vehicles are generally equipped with cooling systems, which are used to maintain the various parts of the vehicle within a suitable working temperature range, so as to ensure the normal, stable and efficient operation of each part and the passenger compartment to meet the comfort requirements of passengers.
  • each servo component in the cooling system is independent of each other, and the working states of each servo component will affect each other.
  • the cooling fan and the cooling water pump as an example, during the cooling process, if the state of the cooling fan changes, the cooling water pump will be broken due to the system balance point, and the water pump needs to coordinate with the fan to adjust the speed. Adjust accordingly, the adjustment process will cause the working state of each servo component in the cooling system to oscillate periodically, affecting the service life of the servo component.
  • the present disclosure aims to provide a vehicle cooling control method, system and vehicle, so as to solve the problem that the existing vehicle cooling system control method easily causes the working state of each servo component to oscillate periodically and affects the service life of the servo component. .
  • a vehicle cooling control method wherein the method includes:
  • determining the cooling demand value of each cooling object according to the current temperature value and the temperature change rate of each cooling object includes:
  • each cooling object query a preset cooling demand table to determine the cooling demand value of each cooling object; wherein, the cooling demand table is used to describe the temperature value and the temperature Correspondence between rate of change and cooling demand value.
  • the execution opening degree of each servo component in the vehicle cooling system is determined according to the target demand value among all the cooling demand values and the preset corresponding relationship, and the servo component is controlled according to the corresponding Perform opening work to cool the cooling object, including:
  • control strategy table Query the preset control strategy table according to the target demand value to determine the execution opening of each of the servo components; the control strategy table is used to describe the correspondence between the execution opening of each of the servo components and the demand value relation;
  • the corresponding servo components are controlled to work.
  • a plurality of demand value intervals are set in the control strategy table, and the execution opening degrees corresponding to each of the servo components are different in at least two of the demand value intervals.
  • the method before the querying a preset control strategy table according to the target demand value and determining the execution opening of each of the servo components, the method includes:
  • control strategy table determine the upper limit value and the lower limit value of the first demand value interval
  • the corresponding execution opening of each of the servo components when the target demand value is less than or equal to the first cooling threshold, the corresponding execution opening of each of the servo components is 0; when the target demand value is greater than or equal to the first cooling threshold When the second cooling threshold is used, the execution opening degree corresponding to each of the servo components is the upper limit of the opening degree; the second cooling threshold value is greater than the first cooling threshold value.
  • the servo component includes a fan, a water pump and an air intake grille.
  • Another object of the embodiments of the present disclosure is to provide a vehicle cooling control system, wherein the system includes:
  • an acquisition module for acquiring the current temperature value and temperature change rate of each cooling object in the vehicle when the vehicle is running
  • a determining module configured to determine the cooling demand value of each cooling object according to the current temperature value and the temperature change rate of each cooling object, where the cooling demand value is used to describe the cooling demand intensity of the corresponding cooling object;
  • the control module is used to determine the execution opening degree of each servo component in the vehicle cooling system according to the target demand value and the preset corresponding relationship in all the cooling demand values, and control the servo component to work according to the corresponding execution opening degree, so as to The cooling object is cooled; the target demand value includes the maximum value among all the cooling demand values.
  • the determining module is specifically configured to query a preset cooling demand table according to the current temperature value and temperature change rate of each cooling object, and determine the cooling of each cooling object.
  • Demand value wherein, the cooling demand table is used to describe the temperature value and the corresponding relationship between the temperature change rate and the cooling demand value.
  • control module includes:
  • a first determining unit configured to determine the maximum value among all the cooling demand values as the target demand value
  • the second determination unit is configured to query a preset control strategy table according to the target demand value, and determine the execution opening of each of the servo components; the control strategy table is used to describe the execution opening of each of the servo components Correspondence with the demand value;
  • the control unit is configured to control the corresponding servo components to work according to the execution opening of each of the servo components.
  • control module in the control strategy table, a plurality of demand value intervals are set, and the control module further includes:
  • a third determining unit configured to determine the first demand value interval in which the last demand value is located before querying the preset control strategy table according to the target demand value and determining the execution opening of each of the servo components
  • a fourth determining unit configured to determine an upper limit value and a lower limit value of the first demand value interval according to the control strategy table
  • the entry unit is configured to enter the according to the required value when the difference between the lower limit value and the target demand value reaches the interval switching threshold, or when the difference between the target demand value and the upper limit value reaches the interval switching threshold.
  • Yet another object of the present disclosure is to provide a vehicle, wherein the vehicle further includes the vehicle cooling control system as described above.
  • the vehicle cooling control method, system and vehicle described in the present disclosure have the following advantages:
  • each servo component The execution opening of each servo component is controlled, and the servo component is controlled to work according to the corresponding execution opening. Because the preset correspondence relationship pre-consides the balance relationship between each servo component, the working status of each servo component can be correlated. And comprehensive control is carried out to prevent the control system from oscillating and improve the control stability, thereby solving the problem of the existing vehicle cooling system control method, which easily causes the working state of each servo component to oscillate periodically and affects the service life of the servo component.
  • FIG. 1 is a schematic flowchart of a vehicle cooling control method proposed by an embodiment of the disclosure
  • FIG. 2 is a schematic flowchart of a vehicle cooling control method proposed by a preferred embodiment of the disclosure
  • FIG. 3 is a technical schematic diagram of a vehicle cooling control method proposed by an embodiment of the present disclosure
  • FIG. 4 is a schematic structural diagram of a vehicle cooling control system proposed by an embodiment of the present disclosure.
  • Figure 5 schematically shows a block diagram of a computing processing device for performing methods according to the present disclosure.
  • Figure 6 schematically shows a memory unit for holding or carrying program code implementing the method according to the present disclosure.
  • the vehicle cooling control method provided by an embodiment of the present disclosure includes steps S100 to S300 .
  • the vehicle cooling control method provided by the embodiment of the present disclosure is applied to a vehicle controller of a vehicle.
  • the vehicle controller is connected to each cooling object and the cooling system in the vehicle in communication, and can obtain the temperature state of each cooling object, or can Send control commands to the cooling system to control the work of each servo component in the cooling system.
  • Step S100 When the vehicle is running, obtain the current temperature value and temperature change rate of each cooling object in the vehicle.
  • the cooling object refers to the vehicle components or systems that need to be temperature controlled by the cooling system and maintained in a suitable temperature range.
  • the above-mentioned cooling objects may be motors, motor controllers, voltage converters, and the like.
  • the current temperature value of each cooling temperature can be detected and obtained by a temperature sensor, and according to different cooling objects, the current temperature value corresponding to the cooling object can be directly detected and obtained by the temperature sensor, or by detecting the cooling liquid corresponding to the cooling object.
  • the temperature value indirectly obtains the current temperature value of the cooling object.
  • the above current temperature values include but are not limited to the motor controller inlet coolant temperature, the voltage converter (DCDC) inlet coolant temperature value, the motor inlet coolant temperature value, the motor stator temperature value, and the motor controller body temperature. value.
  • DCDC voltage converter
  • the temperature change rate ⁇ T/( ⁇ t), where ⁇ T is the temperature change within ⁇ t, and ⁇ t is the time interval for calculating the temperature change rate.
  • the current temperature value of each cooling object can be continuously obtained at preset time intervals, and then the temperature change rate of the cooling object is calculated from the current temperature value and the temperature value of the cooling object obtained last time, wherein the first calculation The previous temperature change rate is 0. After the temperature change rate is calculated, the previous value is maintained until the next calculation.
  • the temperature change rate can indeed predict the temperature trend in advance.
  • the cooling system can be intervened in advance to avoid the risk of over-temperature, and when the temperature of the cooling object is predicted to be about to be When the state beyond the suitable temperature range returns to the suitable temperature range, the cooling system is controlled to exit the cooling and cooling work in advance to reduce the servo energy consumption.
  • the above ⁇ t can be set to 2s, that is, the temperature change rate is calculated every 2s.
  • Step S200 Determine a cooling demand value of each cooling object according to the current temperature value and temperature change rate of each cooling object, where the cooling demand value is used to describe the cooling demand intensity of the corresponding cooling object.
  • the cooling demand intensity refers to the intensity of the cooling object that needs to be cooled and lowered
  • the cooling demand value is a numerical value used to describe the cooling demand intensity.
  • the cooling demand intensity is affected by the temperature of the cooling object and the temperature change rate, the higher the temperature of the cooling object, the stronger the cooling demand, and the higher the corresponding cooling demand value; the greater the temperature change rate of the cooling object, It shows that the faster the temperature of the cooling object changes, the stronger the cooling demand, and the higher the corresponding cooling demand value.
  • Step S300 Determine the execution opening degree of each servo component in the vehicle cooling system according to the target demand value in all the cooling demand values and the preset corresponding relationship, and control the servo component to work according to the corresponding execution opening degree, so as to control all the cooling demand values.
  • the cooling object is cooled, and the preset corresponding relationship includes the corresponding relationship between the execution opening of each of the servo components and the demand value; the target demand value includes the maximum value among all the cooling demand values.
  • the servo component refers to a component that constitutes a cooling system and is used to specifically implement cooling and cooling of the cooling object.
  • the above-mentioned servo components may be fans, water pumps, and air intake grilles.
  • the above-mentioned fan is specifically a pulse width modulation (Pulse Width Modulation, PWM) fan
  • the above-mentioned water pump is a pulse width modulation (Pulse Width Modulation, PWM) water pump
  • the above-mentioned air intake format is specifically an intelligent air intake grille (Active Grille Shutter, AGS) .
  • the preset corresponding relationship includes the corresponding relationship between the execution opening of each of the servo components and the demand value.
  • the preset corresponding relationship determines the execution opening of each servo component, and then controls the coordinated work of each servo component, which can not only achieve cooling and cooling of each cooling object according to the cooling and cooling intensity corresponding to the maximum value, but also correlate and take into account the performance of each servo component.
  • the mutual influence between the working states can make each servo component coordinate and stably perform the cooling and cooling operation, prevent the frequent adjustment of the operating intensity of each servo component due to the mutual influence, and reduce the vibration of the control system.
  • step S300 because the current maximum cooling demand intensity of each cooling object is used to coordinate and control the work of each servo component, the cooling and cooling demand of each cooling object can always be satisfied.
  • the vehicle cooling control method described in the present disclosure has the following advantages:
  • the cooling demand value is determined according to the current temperature and temperature change rate of the cooling object, the temperature trend can be predicted in advance; at the same time, the maximum value of the cooling demand value of each cooling object is used to control the work of each servo component in the cooling system to achieve The working state of the servo components is correlated, and comprehensive control is performed to prevent the control system from oscillating and improve the control stability, thus solving the control method of the cooling system of the existing vehicle, which easily causes the working state of each servo component to oscillate periodically, affecting the servo components. the issue of service life.
  • step S200 includes step S201.
  • Step S201 according to the current temperature value and temperature change rate of each cooling object, query a preset cooling demand table, and determine the cooling demand value of each cooling object; wherein, the cooling demand table is used to describe the temperature value and the corresponding relationship between the temperature change rate and the cooling demand value.
  • the cooling demand table is a table representing the corresponding relationship between the temperature value and the temperature change rate and the cooling demand value.
  • setting 0 means no cooling demand
  • 1 means maximum cooling demand
  • the cooling demand gradually increases from 0.1 to 0.9.
  • several corresponding points of temperature value, temperature change rate and cooling demand value can be set at intervals, and then the temperature value is used as one coordinate axis, and the temperature change rate is used as another coordinate axis.
  • the obtained current temperature value and the calculated temperature change rate are used to look up the table through interpolation to obtain a cooling demand value.
  • the cooling demand value of the cooling object can be quickly determined.
  • step S300 includes steps S301 to S303.
  • Step S301 Determine the maximum value among all the cooling demand values as the target demand value.
  • step S301 since the cooling demand intensity of different cooling objects is different, and the cooling system can only meet the cooling demand of all cooling objects at the same time by working with the maximum cooling demand intensity. Therefore, the cooling demand values corresponding to each cooling object are compared, and the maximum value is taken as the target value for controlling the operation of the cooling system, that is, the above-mentioned target demand value is obtained.
  • Step S302 query a preset control strategy table according to the target demand value, and determine the execution opening of each of the servo components; the control strategy table is used to describe the difference between the execution opening and the demand value of each of the servo components. Correspondence between.
  • the control strategy table is a table used to describe the corresponding relationship between the execution opening of each of the servo components and the target demand value, and each servo component operates according to the execution opening determined by the control strategy table. At the time, it can coordinate and stably cool down each cooling object according to the intensity corresponding to the target demand value, realize the associated control of the working state of each servo component, prevent the control system from oscillating, and improve the control stability.
  • the execution opening degree of each servo component can be queried.
  • the above control strategy table needs to be determined in advance by combining the specific performance of each servo component of the cooling system and through specific experiments.
  • the embodiment of the present disclosure is equivalent to realizing the control of multiple servo components in the vehicle cooling system through the intermediate demand variable, the target demand value, which greatly reduces the calibration workload.
  • Step S303 according to the execution opening of each of the servo components, control the corresponding servo components to work.
  • step S303 that is, according to the execution opening of each cooling system servo component obtained by the query in the above-mentioned step S302, a control command is sent to the corresponding servo component, so that each servo component can coordinate work according to its corresponding execution opening, so that the entire The cooling system can cool down each cooling object according to the cooling intensity corresponding to the target demand value.
  • a control strategy table for describing the corresponding relationship between the execution opening of each of the servo components and the target demand value is set up in advance.
  • a plurality of demand value intervals are set in the control strategy table, and the execution opening degrees corresponding to each of the servo components are different in at least two of the demand value intervals. That is, the target demand value needs to be divided into a plurality of intervals, and the execution openings of each servo component corresponding to different target demand values in the same demand value interval are the same.
  • the above-mentioned execution opening degree may be a specific opening degree or a driving duty ratio; for example, for a fan and a water pump, the above-mentioned execution opening degree corresponds to a driving duty ratio, and for an air intake grille, Then the above-mentioned execution opening degree is the specific opening degree.
  • the execution opening corresponding to each of the servo components when the target demand value is less than or equal to the first cooling threshold, the execution opening corresponding to each of the servo components is 0; when the target demand value is greater than or equal to the second cooling threshold , the execution opening corresponding to each of the servo components is the upper limit of the opening; the second cooling threshold is greater than the first cooling threshold.
  • each servo component when the target demand value reaches the control lower limit state of the cooling system, each servo component is controlled to be shut down directly, and when the target demand value reaches the control upper limit state of the cooling system, each servo component is controlled to be turned on according to the maximum performance. degree to perform the work.
  • the first cooling threshold may be 0.2
  • the second cooling threshold may be 0.9.
  • the target demand value corresponding to the fan and the water pump is divided into two intervals of less than or equal to 0.2 and greater than 0.2; when the target demand value is less than or equal to 0.2, the execution opening of the fan and the water pump is 0, that is, the control The fan and water pump are in a closed state; when the target demand value is greater than 0.2, the opening of the fan and water pump is between 20% and 90%, and has a linear relationship with the target demand value, that is, between 20% and 90%.
  • the target demand value is linearly adjusted. Specifically, the target demand value is multiplied by 100 to obtain the execution opening of the fan and the water pump.
  • the target demand value corresponding to the air intake grille is divided into five ranges of less than or equal to 0.2, 0.2-0.6, 0.6-0.8, 0.8-0.9 and greater than 0.9; among them, the target demand value is less than or equal to 0.2 , the execution opening of the air intake grille is 0%, that is, the control air intake grille is in a closed state; and when the target demand value is greater than 0.2 and less than or equal to 0.6, the execution opening degree of the air intake grille is 40%.
  • the execution opening of the intake grill is 60%; when the target demand value is greater than 0.8 and less than 0.9, the execution opening of the intake grill is 80%; and When the target demand value is greater than or equal to 0.9, the execution opening of the intake grill is 100%.
  • the vehicle controller determines that the drive motor can be cooled according to Table 1 above.
  • steps S3011 to S3014 are further included.
  • Step S3011 Determine the first demand value interval in which the last demand value is located.
  • step S3011 it is queried according to the control history record in which demand value interval the cooling system of the vehicle worked last time.
  • Step S3012 Determine the upper limit value and the lower limit value of the first demand value interval according to the control strategy table.
  • each demand value interval in the control strategy table has a corresponding upper limit value and a lower limit value, according to the control strategy table and the first demand value interval determined in the above step S3011, it is possible to The upper limit value and the lower limit value corresponding to the first demand value interval are obtained.
  • Step S3013 when the difference between the lower limit value and the target demand value reaches the interval switching threshold, or when the difference between the target demand value and the upper limit value reaches the interval switching threshold, enter the The step of querying the control strategy table for the demand value to determine the execution opening of each of the servo components.
  • Step S3014 when the difference between the lower limit value and the target demand value does not reach the interval switching threshold, and when the difference between the target demand value and the upper limit value does not reach the interval switching threshold, maintain each of the servos.
  • the current execution opening of the component when the difference between the lower limit value and the target demand value does not reach the interval switching threshold, and when the difference between the target demand value and the upper limit value does not reach the interval switching threshold, maintain each of the servos.
  • the above-mentioned interval switching threshold is a threshold value for judging whether it is necessary to switch its execution opening according to the target demand value corresponding to the servo component, that is, when the target demand value exceeds the original demand value, the interval reaches the above-mentioned interval.
  • the threshold value is switched, the servo part is controlled to work according to the execution opening corresponding to the target demand value, otherwise the original execution opening is maintained for cooling and cooling, which can avoid the target demand value corresponding to the servo part being between two when the temperature changes slightly.
  • the above interval switching threshold may be 0.05.
  • the downlink value in the above-mentioned Table 2 is also the above-mentioned interval switching threshold value.
  • the interval switching threshold by setting the interval switching threshold, it can be avoided that when the target demand value corresponding to the servo component fluctuates between the two demand value intervals when the temperature changes slightly, the execution opening of the servo component corresponding to the two demand value intervals occurs.
  • back and forth oscillation adjustment between degrees it can control the work of each servo component in a more coordinated and stable manner, and achieve cooling and cooling of each cooling object of the vehicle according to the corresponding cooling demand intensity.
  • FIG. 2 shows a schematic flowchart of a vehicle cooling control method provided by a preferred embodiment of the present disclosure, wherein a control strategy table is preset in the vehicle, and the control strategy table is used to describe each of the The corresponding relationship between the execution opening of the servo component and the demand value, in the control strategy table, a plurality of demand value intervals are set, and the execution opening corresponding to each of the servo components is in at least two of the demand value intervals
  • the method includes steps S211-S219.
  • Step S211 when the vehicle is running, obtain the current temperature value and temperature change rate of each cooling object in the vehicle.
  • step S211 reference may be made to the detailed description of the step S100, which will not be repeated here.
  • Step S212 Query a preset cooling demand table according to the current temperature value and temperature change rate of each cooling object, and determine the cooling demand value of each cooling object; wherein, the cooling demand table is used to describe the temperature value and the corresponding relationship between the temperature change rate and the cooling demand value.
  • step S212 reference may be made to the detailed description of the step S201, which will not be repeated here.
  • Step S213 Determine the maximum value among all the cooling demand values as the target demand value.
  • step S213 reference may be made to the detailed description of step S301, which will not be repeated here.
  • Step S214 Determine the first demand value interval in which the last demand value is located.
  • step S214 reference may be made to the detailed description of step S3011, which will not be repeated here.
  • Step S215 Determine the upper limit value and the lower limit value of the first demand value interval according to the control strategy table.
  • step S215 reference may be made to the detailed description of step S3012, which will not be repeated here.
  • Step S216 when the difference between the lower limit value and the target demand value reaches the interval switching threshold, or when the difference between the target demand value and the upper limit value reaches the interval switching threshold, enter the The step of querying the control strategy table for the demand value to determine the execution opening of each of the servo components.
  • step S216 reference may be made to the detailed description of step S3013, which will not be repeated here.
  • Step S217 when the difference between the lower limit value and the target demand value does not reach the interval switching threshold, and when the difference between the target demand value and the upper limit value does not reach the interval switching threshold, maintain each of the servos.
  • the current execution opening of the component when the difference between the lower limit value and the target demand value does not reach the interval switching threshold, and when the difference between the target demand value and the upper limit value does not reach the interval switching threshold, maintain each of the servos.
  • step S217 reference may be made to the detailed description of step S3014, which will not be repeated here.
  • Step S218 query a preset control strategy table according to the target demand value, and determine the execution opening of each of the servo components.
  • step S21 reference may be made to the detailed description of the step S302, which will not be repeated here.
  • Step S219 according to the execution opening degree of each of the servo components, control the corresponding servo components to work.
  • step S219 reference may be made to the detailed description of step S303, which will not be repeated here.
  • the vehicle cooling control method described in the embodiments of the present disclosure has the following advantages:
  • the temperature trend can be predicted in advance, and the cooling system can be intervened in advance to avoid the risk of over-temperature, or exit in advance to reduce the energy consumption of the servo;
  • the maximum value of the demand value controls the work of each servo component in the cooling system, realizes the correlation of the working status of each servo component, and performs comprehensive control to prevent the control system from oscillating and improve the control stability, thus solving the cooling system of the existing vehicle.
  • the control method can easily lead to the periodic oscillation of the working state of each servo component, which affects the service life of the servo component.
  • the execution opening of the servo component corresponding to the two demand value intervals can be avoided.
  • the situation of back and forth oscillation adjustment can control the work of each servo component in a more coordinated and stable manner, and achieve cooling and cooling of each cooling object of the vehicle according to the corresponding cooling demand intensity.
  • FIG. 3 shows a technical schematic diagram of the vehicle cooling control method proposed by the embodiment of the present disclosure.
  • step S311 when the vehicle is in a running state, the temperature of each cooling component that needs to be cooled is detected by a temperature sensor;
  • step S312 calculate the temperature change rate of each cooling component within 2s
  • step S313 according to the temperature and the temperature change rate of each cooling component, use the interpolation method to determine the cooling demand, and calculate the cooling demand value of each cooling component;
  • step S314 the maximum value of the cooling demand values of each cooling component is used as the target demand value for controlling the operation of the cooling system
  • step S315 according to the PWM fan control logic, the operation of the fan is controlled according to the target demand value determined in step S314;
  • step S316 according to the PWM water pump control logic, the water pump is controlled to work according to the target demand value determined in step S314;
  • step S317 according to the AGS grid control logic, the AGS grid opening is controlled according to the target demand value determined in step S314.
  • FIG. 4 shows a schematic structural diagram of a vehicle cooling control system proposed by an embodiment of the present disclosure, and the system includes:
  • an acquisition module 41 configured to acquire the current temperature value and temperature change rate of each cooling object in the vehicle when the vehicle is running;
  • a determination module 42 configured to determine the cooling demand value of each cooling object according to the current temperature value and the temperature change rate of each cooling object, where the cooling demand value is used to describe the cooling demand intensity of the corresponding cooling object;
  • the control module 43 is configured to determine the execution opening degree of each servo component in the vehicle cooling system according to the target demand value in all the cooling demand values and the preset corresponding relationship, and control the servo component to work according to the corresponding execution opening degree, to cool the cooling object; the target demand value includes the maximum value among all the cooling demand values.
  • the acquisition module 41 acquires the current temperature and temperature change rate of each cooling object in the vehicle, and then the determining module 42 acquires the current temperature and temperature of each cooling object according to the current temperature and temperature of the cooling object.
  • the rate of change is to determine the cooling demand value used to describe the cooling demand intensity of each of the cooling objects, and then the control module 43 determines each cooling demand value in the vehicle cooling system according to the target demand value of all the cooling demand values and the preset corresponding relationship.
  • the execution opening of each servo component is controlled, and the servo component is controlled to work according to the corresponding execution opening, so as to cool the cooling object.
  • the cooling demand value is determined according to the current temperature and temperature change rate of the cooling object, the temperature trend can be predicted in advance, and the cooling system can intervene in advance to avoid the risk of over-temperature, or exit in advance to reduce the energy consumption of the servo;
  • the maximum value of the cooling demand value controls the work of each servo component in the cooling system, realizes the correlation of the working status of each servo component, and performs comprehensive control to prevent the control system from oscillating and improve the control stability, thus solving the problem of existing vehicles.
  • the control method of the cooling system can easily lead to the periodic oscillation of the working state of each servo component, which affects the service life of the servo component.
  • the determining module 42 is specifically configured to query a preset cooling demand table according to the current temperature value and temperature change rate of each cooling object, and determine each cooling object.
  • the cooling demand value wherein, the cooling demand table is used to describe the corresponding relationship between the temperature value and the temperature change rate and the cooling demand value.
  • control module 43 includes:
  • a first determining unit configured to determine the maximum value among all the cooling demand values as the target demand value
  • the second determination unit is configured to query a preset control strategy table according to the target demand value, and determine the execution opening of each of the servo components; the control strategy table is used to describe the execution opening of each of the servo components Correspondence with the demand value;
  • the control unit is configured to control the corresponding servo components to work according to the execution opening of each of the servo components.
  • control module 43 in the control strategy table, a plurality of demand value intervals are set, and the execution opening corresponding to each of the servo components is different in at least two of the demand value intervals, and the The control module 43 also includes:
  • a third determining unit configured to determine the first demand value interval in which the last demand value is located before querying the preset control strategy table according to the target demand value and determining the execution opening of each of the servo components
  • a fourth determining unit configured to determine an upper limit value and a lower limit value of the first demand value interval according to the control strategy table
  • the entry unit is configured to enter the according to the required value when the difference between the lower limit value and the target demand value reaches the interval switching threshold, or when the difference between the target demand value and the upper limit value reaches the interval switching threshold.
  • Yet another object of the present disclosure is to provide a vehicle, wherein the vehicle further includes the vehicle cooling control system as described above.
  • the vehicle cooling control system, the vehicle and the above-mentioned vehicle cooling control method have the same advantages over the prior art, which will not be repeated here.
  • the vehicle cooling control method, system and vehicle provided by the present application when the vehicle is running, obtain the current temperature value and temperature change rate of each cooling object in the vehicle, and then obtain the current temperature value and temperature change rate of each cooling object in the vehicle. temperature and temperature change rate, determine the cooling demand value used to describe the cooling demand intensity of each of the cooling objects, and then determine each cooling system in the vehicle according to the target demand value in all the cooling demand values and the preset corresponding relationship.
  • the execution opening of the servo component is controlled, and the servo component is controlled to work according to the corresponding execution opening, so as to cool the cooling object.
  • the cooling demand value is determined according to the current temperature and temperature change rate of the cooling object, the temperature trend can be predicted in advance, and the cooling system can intervene in advance to avoid the risk of over-temperature, or exit in advance to reduce the energy consumption of the servo;
  • the maximum value of the cooling demand value controls the work of each servo component in the cooling system, realizes the correlation of the working status of each servo component, and performs comprehensive control to prevent the control system from oscillating and improve the control stability, thus solving the problem of existing vehicles.
  • the control method of the cooling system can easily lead to the periodic oscillation of the working state of each servo component, which affects the service life of the servo component.
  • the device embodiments described above are only illustrative, wherein the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in One place, or it can be distributed over multiple network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution in this embodiment. Those of ordinary skill in the art can understand and implement it without creative effort.
  • Various component embodiments of the present disclosure may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof.
  • a microprocessor or a digital signal processor (DSP) may be used in practice to implement some or all of the functions of some or all of the components in a computing processing device according to embodiments of the present disclosure.
  • DSP digital signal processor
  • the present disclosure can also be implemented as apparatus or apparatus programs (eg, computer programs and computer program products) for performing some or all of the methods described herein.
  • Such a program implementing the present disclosure may be stored on a computer-readable medium, or may be in the form of one or more signals. Such signals may be downloaded from Internet sites, or provided on carrier signals, or in any other form.
  • Figure 5 illustrates a computing processing device that may implement methods in accordance with the present disclosure.
  • the computing processing device traditionally includes a processor 1010 and a computer program product or computer readable medium in the form of a memory 1020 .
  • the memory 1020 may be electronic memory such as flash memory, EEPROM (Electrically Erasable Programmable Read Only Memory), EPROM, hard disk, or ROM.
  • the memory 1020 has storage space 1030 for program code 1031 for performing any of the method steps in the above-described methods.
  • the storage space 1030 for program codes may include various program codes 1031 for implementing various steps in the above methods, respectively. These program codes can be read from or written to one or more computer program products.
  • These computer program products include program code carriers such as hard disks, compact disks (CDs), memory cards or floppy disks. Such computer program products are typically portable or fixed storage units as described with reference to FIG. 6 .
  • the storage unit may have storage segments, storage spaces, etc. arranged similarly to the memory 1020 in the computing processing device of FIG. 5 .
  • the program code may, for example, be compressed in a suitable form.
  • the storage unit includes computer readable code 1031', ie code readable by a processor such as 1010, for example, which, when executed by a computing processing device, causes the computing processing device to perform any of the methods described above. of the various steps.

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Abstract

一种车辆冷却控制方法，包括：在车辆运行时，获取车辆中每个冷却对象的当前温度值及温度变化率；根据每个冷却对象的当前温度值及温度变化率，确定每个冷却对象的冷却需求值；根据所有冷却需求值中的目标需求值和预设对应关系，确定车辆冷却系统中每个伺服部件的执行开度，并控制伺服部件按照对应的执行开度工作，每个伺服部件的执行开度与需求值之间具有对应关系；目标需求值包括所有冷却需求值中最大值。一种车辆冷却控制系统、车辆、计算机处理设备、计算机程序和计算机可读介质也被公开。

Description

一种车辆冷却控制方法、系统及车辆
相关申请的交叉引用
本公开要求在2020年08月25日提交中国专利局、申请号为202010865774.6、名称为“一种车辆冷却控制方法、系统及车辆”的中国专利申请的优先权，其全部内容通过引用结合在本公开中。
技术领域
本公开涉及汽车技术领域，特别涉及一种车辆冷却控制方法、系统及车辆。
背景技术
当前，车辆一般都配置有冷却系统，用于将车辆的各零部件维持在适宜工作温度区间内，以确保各个零部件的正常、稳定、高效工作以及乘员舱满足乘客的舒适度需求。
但是，冷却系统内各个伺服部件的控制逻辑相互独立，而各个伺服部件之间的工作状态会互相影响。以冷却风扇及冷却水泵为例，在冷却过程中，若冷却风扇状态发生变化，冷却水泵会因系统平衡点打破，水泵需要配合风扇进行转速调节，同时，水泵转速调节后风扇状态又需要重新进行相应调整，由此调节过程会导致冷却系统内各个伺服部件的工作状态周期性震荡，影响伺服部件使用寿命。
发明内容
有鉴于此，本公开旨在提出一种车辆冷却控制方法、系统及车辆，以解决现有车辆的冷却系统控制方式，容易导致各个伺服部件的工作状态周期性震荡，影响伺服部件使用寿命的问题。
为达到上述目的，本公开的技术方案是这样实现的：
一种车辆冷却控制方法，其中，所述方法包括：
在车辆运行时，获取所述车辆中每个冷却对象的当前温度值及温度变化率；
根据每个所述冷却对象的当前温度值及温度变化率，确定每个所述冷却对象的冷却需求值，所述冷却需求值用于描述对应冷却对象的冷却需求强度；
根据所有所述冷却需求值中的目标需求值和预设对应关系，确定车辆冷却系统中每个伺服部件的执行开度，并控制伺服部件按照对应的执行开度工作，以对所述冷却对象进行冷却。
进一步地，所述的方法中，所述根据每个所述冷却对象的当前温度值及温度变化率，确定每个所述冷却对象的冷却需求值，包括：
根据每个所述冷却对象的当前温度值及温度变化率，查询预设的冷却需求表，确定每个所述冷却对象的冷却需求值；其中，所述冷却需求表用于描述温度值及温度变化率与冷却需求值之间的对应关系。
进一步地，所述的方法中，所述根据所有所述冷却需求值中的目标需求值和预设对应关系，确定车辆冷却系统中每个伺服部件的执行开度，并控制伺服部件按照对应的执行开度工作，以对所述冷却对象进行冷却，包括：
将所有所述冷却需求值中的最大值，确定为目标需求值；
根据所述目标需求值查询预设的控制策略表，确定各个所述伺服部件的执行开度；所述控制策略表用于描述每个所述伺服部件的执行开度与需求值之间的对应关系；
根据每个所述伺服部件的执行开度，控制对应的伺服部件工作。
进一步地，所述的方法中，所述控制策略表中，设置有多个需求值区间，各个所述伺服部件所对应的执行开度在至少两个所述需求值区间内不同。
进一步地，所述的方法中，在所述根据所述目标需求值查询预设的控制策略表，确定各个所述伺服部件的执行开度之前，包括：
确定上一次的需求值所处的第一需求值区间；
根据所述控制策略表，确定所述第一需求值区间的上限值及下限值；
在所述下限值与目标需求值的差值达到区间切换阈值时，或者目标需求值与所述上限值的差值达到所述区间切换阈值时，进入所述根据所述目标需求值查询所述控制策略表，确定各个所述伺服部件的执行开度的步骤；
在所述下限值与目标需求值的差值未达到区间切换阈值时，且目标需求值与所述上限值的差值未达到所述区间切换阈值时，维持各个所述伺服部件的当前执行开度。
进一步地，所述的方法中，所述控制策略表中，在目标需求值小于或等于第一冷却阈值时，各个所述伺服部件对应的执行开度均为0；在目标需求值大于或等于第二冷却阈值时，各个所述伺服部件对应的执行开度均为开度上限值；所述第二冷却阈值大于所述第一冷却阈值。
进一步地，所述的方法中，所述伺服部件包括风扇、水泵及进气格栅。
本公开实施例的另一目的还在于提出一种车辆冷却控制系统，其中，所述系统包括：
获取模块，用于在车辆运行时，获取所述车辆中每个冷却对象的当前温度值及温度变化率；
确定模块，用于根据每个所述冷却对象的当前温度值及温度变化率，确定每个所述冷却对象的冷却需求值，所述冷却需求值用于描述对应冷却对象的冷却需求强度；
控制模块，用于根据所有所述冷却需求值中的目标需求值和预设对应关系，确定车辆冷却系统中每个伺服部件的执行开度，并控制伺服部件按照对应的执行开度工作，以对所述冷却对象进行冷却；目标需求值包括所有所述冷却需求值中最大值。
进一步地，所述的系统中，所述确定模块，具体用于根据每个所述冷却对象的当前温度值及温度变化率，查询预设的冷却需求表，确定每个所述冷却对象的冷却需求值；其中，所述冷却需求表用于描述温度值及温度变化率与冷却需求值之间的对应关系。
进一步地，所述的系统中，所述控制模块包括：
第一确定单元，用于将所有所述冷却需求值中的最大值，确定为目标需求值；
第二确定单元，用于根据所述目标需求值查询预设的控制策略表，确定各个所述伺服部件的执行开度；所述控制策略表用于描述每个所述伺服部件的执行开度与需求值之间的对应关系；
控制单元，用于根据每个所述伺服部件的执行开度，控制对应的伺服部件工作。
进一步地，所述的系统中，所述控制策略表中，设置有多个需求值区间，所述控制模块还包括：
第三确定单元，用于在根据所述目标需求值查询预设的控制策略表，确定各个所述伺服部件的执行开度之前，确定上一次的需求值所处的第一需求值区间；
第四确定单元，用于根据所述控制策略表，确定所述第一需求值区间的上限值及下限值；
进入单元，用于在所述下限值与目标需求值的差值达到区间切换阈值时，或者目标需求值与所述上限值的差值达到所述区间切换阈值时，进入所述根据所述目标需求值查询所述控制策略表，确定各个所述伺服部件的执行开度的步骤。
本公开的再一目的在于提出一种车辆，其中，所述车辆还包括如上所述的车辆冷却控制系统。
相对于在先技术，本公开所述的车辆冷却控制方法、系统及车辆具有以下优势：
在车辆运行时，获取所述车辆中每个冷却对象的当前温度值及温度变化率，然后根据各个所述冷却对象的当前温度及温度变化率，确定各个所述冷却对象的用于描述冷却需求强度的冷却需求值，再根据所有所述冷却需求值中的目标需求值和预设对应关系，确定车辆冷却系统中每个伺服部件的执行开度，并控制伺服部件按照对应的执行开度工作，以对所述冷却对象进行冷却。因为是根据冷却对象的当前温度及温度变化率确定其冷却需求值，可以提前预测温度走势；同时，以各个冷却对象的冷却需求值中的最大值和预设对应关系，确定车辆冷却系统中每个伺服部件的执行开度，并控制伺服部件按照对应的执行开度工作，因为预设对应关系预先考虑了各个伺服部件之间的平衡关系，因而可以实现对各个伺服部件的工作状态进行关联，并进行综合控制，防止控制系统震荡，提高控制稳定性，从而解决了现有车辆的冷却系统控制方式，容易导致各个伺服部件的工作状态周期性震荡，影响伺服部件使用寿命的问题。
上述说明仅是本公开技术方案的概述，为了能够更清楚了解本公开的技术手段，而可依照说明书的内容予以实施，并且为了让本公开的上述和其它目的、特征和优点能够更明显易懂，以下特举本公开的具体实施方式。
附图说明
构成本公开的一部分的附图用来提供对本公开的进一步理解，本公开的示意性实施例及其说明用于解释本公开，并不构成对本公开的不当限定。在附图中：
图1为本公开实施例所提出的车辆冷却控制方法的流程示意图；
图2为本公开一优选实施例所提出车辆冷却控制方法的流程示意图
图3为本公开实施例所提出的车辆冷却控制方法的技术原理图；
图4为本公开实施例所提出的车辆冷却控制系统的结构示意图；
图5示意性地示出了用于执行根据本公开的方法的计算处理设备的框图；并且
图6示意性地示出了用于保持或者携带实现根据本公开的方法的程序代码的存储单元。
具体实施例
下面将参考附图更详细地描述本申请的实施例。虽然附图中显示了本申请的实施例，然而应当理解，可以以各种形式实现本申请而不应被这里阐述的实施例所限制。相反，提供这些实施例是为了能够更彻底地理解本申请，并且能够将本申请的范围完整地传达给本领域的技术人员。
需要说明的是，在不冲突的情况下，本公开中的实施例及实施例中的特征可以相互组合。
下面将参考附图并结合实施例来详细说明本公开。
请参阅图1，示出了本公开实施例所提供的一种车辆冷却控制方法的流程示意图，本公开实施例所提供的车辆冷却控制方法，所述方法包括步骤S100～S300。
本公开实施例所提供的车辆冷却控制方法，应用于车辆的整车控制器，该整车控制器与车辆中的各冷却对象及冷却系统通信连接，可以获取各个冷却对象的温度状态，也可以向冷却系统发送控制指令，以对应控制冷却系统中各个伺服部件工作。
步骤S100、在车辆运行时，获取所述车辆中每个冷却对象的当前温度值及温度变化率。
上述步骤S100中，冷却对象指的是需要被冷却系统进行温度控制，并维持在适宜温度范围的车辆零部件或系统。在实际应用中，上述冷却对象可以是电机、电机控制器、电压转换器等。
上述步骤S100中，各冷却温度的当前温度值可以通过温度传感器进行检测获取，根据冷却对象的不同，冷却对象对应的当前温度值可以由温度传感器直接检测获得，或通过检测冷却对象对应的冷却液温度值间接获得冷却对象的当前温度值。
在实际应用中，上述当前温度值包括但不限于电机控制器进口冷却液温度、电压转换器(DCDC)进口冷却液温度值、电机进口冷却液温度值、电机定子温度值、电机控制器本体温度值。
上述步骤S100中，温度变化率＝ΔT/(Δt)，其中，ΔT为Δt内的温度变化，Δt为计算温度变化率的时间间隔。具体地，可以按预设时间间隔持续获取各冷却对象的当前温度值，进而由当前温度值及上一次所获取到的冷却对象温度值，计算冷却对象的温度变化率，其中，第一次计算之前温度变化率为0，温度变化率计算过后，再下一次计算之前保持上一次值。温度变化率确可以提前预测温度走势，可以在预判到冷却对象的温度即将超出预设的适宜温度范围时，使冷却系统提前介入以规避超温风险，以及在预判冷却对象的温度即将由超出适宜温度范围的状态回归至适宜温度范围内时，控制冷却系统提前退出冷却降温工作，以降低伺服能耗。
在实际应用中，上述Δt可以设置为2s，即每2s计算一次温度变化率。
步骤S200、根据每个所述冷却对象的当前温度值及温度变化率，确定每个所述冷却对象的冷却需求值，所述冷却需求值用于描述对应冷却对象的冷却需求强度。
在上述步骤S200中，冷却需求强度指的是冷却对象需要冷却降温的强烈程度，上述冷却需求值则是用于描述上述冷却需求强度的数值。其中，因为冷却需求强度受冷却对象的温度及温度变化率影响，冷却对象的温度越高，其冷却降温的需求越强烈，相应的冷却需求值也越高；冷却对象的温度变化率越大，说明冷却对象的温度变化越快，其冷却降温的需求越强烈，其对应的冷却需求值也越高。
步骤S300、根据所有所述冷却需求值中的目标需求值和预设对应关系， 确定车辆冷却系统中每个伺服部件的执行开度，并控制伺服部件按照对应的执行开度工作，以对所述冷却对象进行冷却，所述预设对应关系包括每个所述伺服部件的执行开度与需求值之间的对应关系；目标需求值包括所有所述冷却需求值中最大值。
在上述步骤S300中，伺服部件指的是组成冷却系统并用于具体实现对冷却对象进行降温冷却的部件。在实际应用中，上述伺服部件可以为风扇、水泵及进气格栅等。上述风扇具体为脉冲宽度调制(Pulse Width Modulation，PWM)风扇，上述水泵为脉冲宽度调制(Pulse Width Modulation，PWM)水泵，而上述进气格式具体为智能进气格栅(Active Grille Shutter,AGS)。
在上述步骤S300中，上述预设对应关系包括每个所述伺服部件的执行开度与需求值之间的对应关系，在各个伺服部件按上述对应关系设置的执行开度进行工作时，各个伺服部件可以协调工作，不会出现相互制约、冲突的情况。
上述步骤S300中，在每一次获取到各个冷却对象对应的冷却需求值时，将各个冷却对象对应的冷却需求值时进行对比，取其中的最大值作为目标需求值，然后根据该目标需求值及预设对应关系确定每个伺服部件的执行开度，再控制各个伺服部件协调工作，既可以实现按最大值对应的冷却降温强度对各个冷却对象进行冷却降温，又关联、兼顾了各个伺服部件的工作状态之间的相互影响，可以使得各个伺服部件协调、稳定执行降温冷却操作，防止了各个伺服部件因相互影响而造成运行强度的频繁调整，减少了控制系统震荡。
上述步骤S300，因为是以各个冷却对象中的当前最大冷却需求强度，对应协调控制各个伺服部件工作，因而总是可以满足各个冷却对象的冷却降温需求。
相对于现有技术，本公开所述的车辆冷却控制方法具有以下优势：
在车辆运行时，获取所述车辆中每个冷却对象的当前温度值及温度变化率，然后根据各个所述冷却对象的当前温度及温度变化率，确定各个所述冷却对象的用于描述冷却需求强度的冷却需求值，再根据所有所述冷却需求值中的目标需求值和预设对应关系，确定车辆冷却系统中每个伺服部件的执行开度，并控制伺服部件按照对应的执行开度工作，以对所述冷却对象进行冷却。因为是根据冷却对象的当前温度及温度变化率确定其冷却需求值，可以 提前预测温度走势；同时，以各个冷却对象的冷却需求值中的最大值控制冷却系统中各伺服部件工作，实现对各个伺服部件的工作状态进行关联，并进行综合控制，防止控制系统震荡，提高控制稳定性，从而解决了现有车辆的冷却系统控制方式，容易导致各个伺服部件的工作状态周期性震荡，影响伺服部件使用寿命的问题。
可选地，在一种实施方式中，本公开实施例所提供的车辆冷却控制方法，上述步骤S200包括步骤S201。
步骤S201、根据每个所述冷却对象的当前温度值及温度变化率，查询预设的冷却需求表，确定每个所述冷却对象的冷却需求值；其中，所述冷却需求表用于描述温度值及温度变化率与冷却需求值之间的对应关系。
上述步骤S201中，冷却需求表为表示温度值及温度变化率与冷却需求值之间的对应关系的表格，可以在冷却对象的温度未达到超温风险状态但温度接近超温风险状态时，使冷却系统提前介入以规避超温风险，以及在冷却对象的温度未恢复到适宜温度区间但温度接近适宜温度区间时，使冷却系统提前介入以规避超温风险提前退出以降低伺服能耗。上述冷却需求表具体需要预先结合车辆冷却系统的冷却性能并通过具体实验进行确定。
上述冷却需求表中，设置0表示无冷却需求，1表示最大冷却需求，且随车辆零部件温度值及温度变化率的升高，冷却需求由0.1至0.9逐渐增大。具体地，考虑到测试数据的有限性，可以间隔设置若干个温度值、温度变化率与冷却需求值的对应点，然后将温度值作为一个坐标轴，温度变化率作为另一个坐标轴，根据检测到的当前温度值和计算到的温度变化率通过插值法查表得到一个冷却需求值。
另外，考虑到冷却系统冷却降温性能执行开度调控的有限性，可以设置温度偏差率大于0.2时均按0.2计算，设置温度变化率小于-0.2时均取-0.2，且不进行插值。
示例地，上述冷却需求表如下表1所示。
Figure PCTCN2021113432-appb-000001
表1
本实施方式中，通过预先设置冷却需求表，再获取到冷却对象的当前温度值及计算出冷却对象的温度变化率时，即可以快速确定其冷却需求值。
可选地，在一种具体实施方式中，上述步骤S300包括步骤S301～S303。
步骤S301、将所有所述冷却需求值中的最大值，确定为目标需求值。
在上述步骤S301中，因为不同的冷却对象的冷却需求强度不同，而冷却系统只有按最大的冷却需求强度工作，才能够同时满足所有的冷却对象的冷却需求。因而将各个冷却对象对应的冷却需求值进行对比，取其中的最大值作为控制冷却系统工作的目标值，也即得到上述目标需求值。
步骤S302、根据所述目标需求值查询预设的控制策略表，确定各个所述伺服部件的执行开度；所述控制策略表用于描述每个所述伺服部件的执行开度与需求值之间的对应关系。
在上述步骤S302中，控制策略表为用于描述各个所述伺服部件的执行开度与目标需求值之间对应关系的表格，在各个伺服部件按照上述控制策略表所确定的执行开度进行工作时，可以协调、稳定地按照目标需求值对应的强度对各个冷却对象进行冷却降温，实现对各个伺服部件的工作状态的关联控制，防止控制系统震荡，提高控制稳定性。
因为通过上述步骤S301所确定的目标需求值，可以查询到各个伺服部件 的执行开度。上述控制策略表具体需要预先结合冷却系统的各个伺服部件具体性能并通过具体实验进行确定。
本公开实施例相当于通过目标需求值这个中间需求变量实现对车辆冷却系统中的多个伺服部件的控制，大幅减少标定工作量。
步骤S303、根据每个所述伺服部件的执行开度，控制对应的伺服部件工作。
上述步骤S303中，即按照上述步骤S302查询得到的各个冷却系统伺服部件的执行开度，向对应的伺服部件发送控制指令，使各伺服部件可以按其对应的执行开度协调工作，从而使整个冷却系统可以按目标需求值对应的冷却强度对各个冷却对象冷却降温。
在上述实施方式中，预先根据伺服部件的具体性能，设置用于描述各个所述伺服部件的执行开度与目标需求值之间对应关系的控制策略表，在获取到目标需求值时，即可以快速确定各个伺服部件的执行开度，进而控制伺服部件按该对应的执行开度进行工作。
可选地，在一种实施方式中，所述控制策略表中，设置有多个需求值区间，各个所述伺服部件所对应的执行开度在至少两个所述需求值区间内不同。也即需要将目标需求值划分为多个区间，同一个需求值区间内的不同目标需求值所对应的各个伺服部件的执行开度相同。具体地，根据伺服部件的不同，上述执行开度可以为具体开度或驱动占空比；例如，对于风扇和水泵，则上述执行开度对应为驱动占空比，而对于进气格栅，则上述执行开度为具体开度。
可选地，在一种实施方式中，在目标需求值小于或等于第一冷却阈值时，各个所述伺服部件对应的执行开度均为0；在目标需求值大于或等于第二冷却阈值时，各个所述伺服部件对应的执行开度均为开度上限值；所述第二冷却阈值大于所述第一冷却阈值。
在本实施方式中，即在目标需求值达到冷却系统的调控下限状态时，控制各个伺服部件直接关停，而在目标需求值达到冷却系统的调控上限状态时，控制各个伺服部件按最大执行开度进行执行工作。示例地，上述第一冷却阈值可以为0.2，上述第二冷却阈值可以为0.9。
在实际应用中，不同伺服部件的需求值区间不同。示例地，上述控制策 略表如表2所示。
Figure PCTCN2021113432-appb-000002
表2
表2中，将风扇及水泵对应的目标需求值划分为小于或等于0.2和大于0.2这两个区间；在目标需求值小于或等于0.2时，风扇及水泵的执行开度为0，也即控制风扇及水泵处于关闭状态；而在目标需求值大于0.2时，风扇及水泵的开度在20％～90％之间，且与目标需求值成线性关系，即在20％～90％之间随目标需求值线性调节，具体是按目标需求值乘以100，得到风扇及水泵的执行开度。
表2中，将进气格栅对应的目标需求值划分为小于或等于0.2、0.2～0.6、0.6～0.8、0.8～0.9以及大于0.9这五个区间；其中，在目标需求值小于或等于0.2时，进气格栅的执行开度为0％，也即控制进气格栅处于关闭状态；而在目标需求值大于0.2且小于或等于0.6时，进气格栅的执行开度为40％；在目标需求值大于0.6且小于或等于0.8时，进气格栅的执行开度为60％；在目标需求值大于0.8且小于0.9时，进气格栅的执行开度为80％；而在目标需求值大于或等于0.9时，进气格栅的执行开度为100％。
Figure PCTCN2021113432-appb-000003
表3
示例地，假定当前驱动电机冷却需求最大，若整车控制器检测驱动电机 入水温度为56℃并且当前温度较前2s温升了0.2℃，则整车控制器根据上述表1判定可以驱动电机冷却需求值(Req)为0.7；基于驱动电机确定的冷却需求值，结合上述控制策略表2，确定当前冷却系统中每个伺服部件的工作状态，其中，PWM风扇占空比＝0.7*100＝70％，PWM水泵占空比＝0.7*100＝70％，AGS格栅开度＝60％，具体情况请参阅表3所示。
可选地，在一种实施方式中，在上述步骤S301之后，在上述步骤S302之前，还包括步骤S3011～S3014。
步骤S3011、确定上一次的需求值所处的第一需求值区间。
上述步骤S3011中，即根据控制历史记录查询车辆的冷却系统上一次是按哪一个需求值区间进行工作的。
步骤S3012、根据所述控制策略表，确定所述第一需求值区间的上限值及下限值。
上述步骤S3012中，因为控制策略表中的每个需求值区间都有对应的上限值及下限值，因而根据该控制策略表及上述步骤S3011中所确定的第一需求值区间，即可以得到该第一需求值区间对应的上限值及下限值。
步骤S3013、在所述下限值与目标需求值的差值达到区间切换阈值时，或者目标需求值与所述上限值的差值达到所述区间切换阈值时，进入所述根据所述目标需求值查询所述控制策略表，确定各个所述伺服部件的执行开度的步骤。
步骤S3014、在所述下限值与目标需求值的差值未达到区间切换阈值时，且目标需求值与所述上限值的差值未达到所述区间切换阈值时，维持各个所述伺服部件的当前执行开度。
上述步骤S3013及S3014中，上述区间切换阈值为用于判断是否需要根据伺服部件对应的目标需求值切换其执行开度的的门限值，也即在目标需求值超出原需求值区间达到上述区间切换阈值时，才控制伺服部件按目标需求值所对应的执行开度进行工作，否则维持原有执行开度进行冷却降温，这样可以避免当温度细微变化而使伺服部件对应的目标需求值在两个需求值区间波动时，出现伺服部件在两个需求值区间所对应的执行开度之间来回震荡调整的情况。示例地，上述区间切换阈值可以为0.05。
另外，上述表2中的下行值也即上述区间切换阈值。
因为上述步骤S3013及S3014中，在上述下限值与目标需求值的差值达到区间切换阈值时，或者目标需求值与上述上限值的差值达到所述区间切换阈值时，才进入上述步骤S302中，否则维持各伺服部件的当前执行开度状态。
在本实施方式中，通过设置区间切换阈值，可以避免当温度细微变化而使伺服部件对应的目标需求值在两个需求值区间波动时，出现伺服部件在两个需求值区间所对应的执行开度之间来回震荡调整的情况，能够更协调、稳定地控制各个伺服部件工作，实现按对应的冷却需求强度对车辆各冷却对象进行冷却降温。
请参阅图2，示出了本公开一优选实施例所提供的一种车辆冷却控制方法的流程示意图，其中，车辆中预置由控制策略表，所述控制策略表用于描述每个所述伺服部件的执行开度与需求值之间的对应关系，所述控制策略表中，设置有多个需求值区间，各个所述伺服部件所对应的执行开度在至少两个所述需求值区间内不同，所述方法包括步骤S211～S219。
步骤S211、在车辆运行时，获取所述车辆中每个冷却对象的当前温度值及温度变化率。
上述步骤S211可参照步骤S100的详细说明，此处不再赘述。
步骤S212、根据每个所述冷却对象的当前温度值及温度变化率，查询预设的冷却需求表，确定每个所述冷却对象的冷却需求值；其中，所述冷却需求表用于描述温度值及温度变化率与冷却需求值之间的对应关系。
上述步骤S212可参照步骤S201的详细说明，此处不再赘述。
步骤S213、将所有所述冷却需求值中的最大值，确定为目标需求值。
上述步骤S213可参照步骤S301的详细说明，此处不再赘述。
步骤S214、确定上一次的需求值所处的第一需求值区间。
上述步骤S214可参照步骤S3011的详细说明，此处不再赘述。
步骤S215、根据所述控制策略表，确定所述第一需求值区间的上限值及下限值。
上述步骤S215可参照步骤S3012的详细说明，此处不再赘述。
步骤S216、在所述下限值与目标需求值的差值达到区间切换阈值时，或者目标需求值与所述上限值的差值达到所述区间切换阈值时，进入所述根据所述目标需求值查询所述控制策略表，确定各个所述伺服部件的执行开度的 步骤。
上述步骤S216可参照步骤S3013的详细说明，此处不再赘述。
步骤S217、在所述下限值与目标需求值的差值未达到区间切换阈值时，且目标需求值与所述上限值的差值未达到所述区间切换阈值时，维持各个所述伺服部件的当前执行开度。
上述步骤S217可参照步骤S3014的详细说明，此处不再赘述。
步骤S218、根据所述目标需求值查询预设的控制策略表，确定各个所述伺服部件的执行开度。
上述步骤S218可参照步骤S302的详细说明，此处不再赘述。
步骤S219、根据每个所述伺服部件的执行开度，控制对应的伺服部件工作。
上述步骤S219可参照步骤S303的详细说明，此处不再赘述。
相对于现有技术，本公开实施例所述的车辆冷却控制方法具有以下优势：
根据冷却对象的当前温度及温度变化率确定其冷却需求值，可以提前预测温度走势，使冷却系统提前介入以规避超温风险，或提前退出以降低伺服能耗；同时，以各个冷却对象的冷却需求值中的最大值控制冷却系统中各伺服部件工作，实现对各个伺服部件的工作状态进行关联，并进行综合控制，防止控制系统震荡，提高控制稳定性，从而解决了现有车辆的冷却系统控制方式，容易导致各个伺服部件的工作状态周期性震荡，影响伺服部件使用寿命的问题。另外，本实施例通过设置区间切换阈值，可以避免当温度细微变化而使伺服部件对应的目标需求值在两个需求值区间波动时，出现伺服部件在两个需求值区间所对应的执行开度之间来回震荡调整的情况，能够更协调、稳定地控制各个伺服部件工作，实现按对应的冷却需求强度对车辆各冷却对象进行冷却降温。
在实际应用中，请参阅图3，示出了本公开实施例所提出的车辆冷却控制方法的技术原理图。
如图3所示，在步骤S311中，在车辆处于运行状态，通过温度传感器检测各个需要被冷却的冷却部件的温度；
在步骤S312中，计算各个冷却部件在2s内的温度变化率；
在步骤S313中，根据各个冷却部件的温度及温度变化率，利用插值法进 行冷却需求判定，计算得到各个冷却部件的冷却需求值；
在步骤S314中，将各个冷却部件的冷却需求值中的最大值作为控制冷却系统工作的目标需求值；
在步骤S315中，根据PWM风扇控制逻辑，按步骤S314中所确定的目标需求值根控制风扇工作；
在步骤S316中，根据PWM水泵控制逻辑，按步骤S314中所确定的目标需求值根控制水泵工作；
在步骤S317中，根据AGS格栅控制逻辑，按步骤S314中所确定的目标需求值根控制AGS格栅开度。
本公开的另一目标在于提出一种车辆冷却控制系统，其中，请参阅图4，图4示出了本公开实施例所提出的一种车辆冷却控制系统的结构示意图，所述系统包括：
获取模块41，用于在车辆运行时，获取所述车辆中每个冷却对象的当前温度值及温度变化率；
确定模块42，用于根据每个所述冷却对象的当前温度值及温度变化率，确定每个所述冷却对象的冷却需求值，所述冷却需求值用于描述对应冷却对象的冷却需求强度；
控制模块43，用于根据所有所述冷却需求值中的目标需求值和预设对应关系，确定车辆冷却系统中每个伺服部件的执行开度，并控制伺服部件按照对应的执行开度工作，以对所述冷却对象进行冷却；目标需求值包括所有所述冷却需求值中最大值。
本公开实施例所述的系统，在车辆运行时，由获取模块41获取所述车辆中各冷却对象的当前温度及温度变化率，然后由确定模块42根据各个所述冷却对象的当前温度及温度变化率，确定各个所述冷却对象的用于描述冷却需求强度的冷却需求值，再由控制模块43根据所有所述冷却需求值中的目标需求值和预设对应关系，确定车辆冷却系统中每个伺服部件的执行开度，并控制伺服部件按照对应的执行开度工作，以对所述冷却对象进行冷却。因为是根据冷却对象的当前温度及温度变化率确定其冷却需求值，可以提前预测温度走势，使冷却系统提前介入以规避超温风险，或提前退出以降低伺服能耗；同时，以各个冷却对象的冷却需求值中的最大值控制冷却系统中各伺服部件 工作，实现对各个伺服部件的工作状态进行关联，并进行综合控制，防止控制系统震荡，提高控制稳定性，从而解决了现有车辆的冷却系统控制方式，容易导致各个伺服部件的工作状态周期性震荡，影响伺服部件使用寿命的问题。
可选地，所述的系统中，所述确定模块42，具体用于根据每个所述冷却对象的当前温度值及温度变化率，查询预设的冷却需求表，确定每个所述冷却对象的冷却需求值；其中，所述冷却需求表用于描述温度值及温度变化率与冷却需求值之间的对应关系。
可选地，所述的系统中，所述控制模块43包括：
第一确定单元，用于将所有所述冷却需求值中的最大值，确定为目标需求值；
第二确定单元，用于根据所述目标需求值查询预设的控制策略表，确定各个所述伺服部件的执行开度；所述控制策略表用于描述每个所述伺服部件的执行开度与需求值之间的对应关系；
控制单元，用于根据每个所述伺服部件的执行开度，控制对应的伺服部件工作。
可选地，所述的系统中，所述控制策略表中，设置有多个需求值区间，各个所述伺服部件所对应的执行开度在至少两个所述需求值区间内不同，所述控制模块43还包括：
第三确定单元，用于在根据所述目标需求值查询预设的控制策略表，确定各个所述伺服部件的执行开度之前，确定上一次的需求值所处的第一需求值区间；
第四确定单元，用于根据所述控制策略表，确定所述第一需求值区间的上限值及下限值；
进入单元，用于在所述下限值与目标需求值的差值达到区间切换阈值时，或者目标需求值与所述上限值的差值达到所述区间切换阈值时，进入所述根据所述目标需求值查询所述控制策略表，确定各个所述伺服部件的执行开度的步骤。
本公开的再一目的在于提出一种车辆，其中，所述车辆还包括如上所述的车辆冷却控制系统。
所述车辆冷却控制系统、车辆与上述车辆冷却控制方法相对于现有技术所具有的优势相同，在此不再赘述
综上所述，本申请提供的车辆冷却控制方法、系统及车辆，在车辆运行时，获取所述车辆中每个冷却对象的当前温度值及温度变化率，然后根据各个所述冷却对象的当前温度及温度变化率，确定各个所述冷却对象的用于描述冷却需求强度的冷却需求值，再根据所有所述冷却需求值中的目标需求值和预设对应关系，确定车辆冷却系统中每个伺服部件的执行开度，并控制伺服部件按照对应的执行开度工作，以对所述冷却对象进行冷却。因为是根据冷却对象的当前温度及温度变化率确定其冷却需求值，可以提前预测温度走势，使冷却系统提前介入以规避超温风险，或提前退出以降低伺服能耗；同时，以各个冷却对象的冷却需求值中的最大值控制冷却系统中各伺服部件工作，实现对各个伺服部件的工作状态进行关联，并进行综合控制，防止控制系统震荡，提高控制稳定性，从而解决了现有车辆的冷却系统控制方式，容易导致各个伺服部件的工作状态周期性震荡，影响伺服部件使用寿命的问题。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
以上所描述的装置实施例仅仅是示意性的，其中所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部模块来实现本实施例方案的目的。本领域普通技术人员在不付出创造性的劳动的情况下，即可以理解并实施。
本公开的各个部件实施例可以以硬件实现，或者以在一个或者多个处理器上运行的软件模块实现，或者以它们的组合实现。本领域的技术人员应当理解，可以在实践中使用微处理器或者数字信号处理器(DSP)来实现根据本公开实施例的计算处理设备中的一些或者全部部件的一些或者全部功能。本公开还可以实现为用于执行这里所描述的方法的一部分或者全部的设备或者装置程序(例如，计算机程序和计算机程序产品)。这样的实现本公开的程序可以存储在计算机可读介质上，或者可以具有一个或者多个信号的形式。 这样的信号可以从因特网网站上下载得到，或者在载体信号上提供，或者以任何其他形式提供。
例如，图5示出了可以实现根据本公开的方法的计算处理设备。该计算处理设备传统上包括处理器1010和以存储器1020形式的计算机程序产品或者计算机可读介质。存储器1020可以是诸如闪存、EEPROM(电可擦除可编程只读存储器)、EPROM、硬盘或者ROM之类的电子存储器。存储器1020具有用于执行上述方法中的任何方法步骤的程序代码1031的存储空间1030。例如，用于程序代码的存储空间1030可以包括分别用于实现上面的方法中的各种步骤的各个程序代码1031。这些程序代码可以从一个或者多个计算机程序产品中读出或者写入到这一个或者多个计算机程序产品中。这些计算机程序产品包括诸如硬盘，紧致盘(CD)、存储卡或者软盘之类的程序代码载体。这样的计算机程序产品通常为如参考图6所述的便携式或者固定存储单元。该存储单元可以具有与图5的计算处理设备中的存储器1020类似布置的存储段、存储空间等。程序代码可以例如以适当形式进行压缩。通常，存储单元包括计算机可读代码1031’，即可以由例如诸如1010之类的处理器读取的代码，这些代码当由计算处理设备运行时，导致该计算处理设备执行上面所描述的方法中的各个步骤。
以上所述仅为本公开的较佳实施例而已，并不用以限制本公开，凡在本公开的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本公开的保护范围之内。
以上所述，仅为本公开的具体实施方式，但本公开的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本公开揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本公开的保护范围之内。因此，本公开的保护范围应以权利要求的保护范围为准。

Claims (15)

  1. 一种车辆冷却控制方法，其特征在于，所述方法包括：
    在车辆运行时，获取所述车辆中每个冷却对象的当前温度值及温度变化率；
    根据每个所述冷却对象的当前温度值及温度变化率，确定每个所述冷却对象的冷却需求值，所述冷却需求值用于描述对应冷却对象的冷却需求强度；
    根据所有所述冷却需求值中的目标需求值和预设对应关系，确定车辆冷却系统中每个伺服部件的执行开度，并控制伺服部件按照对应的执行开度工作，以对所述冷却对象进行冷却，所述预设对应关系包括每个所述伺服部件的执行开度与需求值之间的对应关系；目标需求值包括所有所述冷却需求值中最大值。
  2. 根据权利要求1所述的方法，其特征在于，所述根据每个所述冷却对象的当前温度值及温度变化率，确定每个所述冷却对象的冷却需求值，包括：
    根据每个所述冷却对象的当前温度值及温度变化率，查询预设的冷却需求表，确定每个所述冷却对象的冷却需求值；其中，所述冷却需求表用于描述温度值及温度变化率与冷却需求值之间的对应关系。
  3. 根据权利要求2所述的方法，其特征在于，所述根据所有所述冷却需求值中的目标需求值和预设对应关系，确定车辆冷却系统中每个伺服部件的执行开度，并控制伺服部件按照对应的执行开度工作，以对所述冷却对象进行冷却，包括：
    将所有所述冷却需求值中的最大值，确定为目标需求值；
    根据所述目标需求值查询预设的控制策略表，确定各个所述伺服部件的执行开度；所述控制策略表用于描述每个所述伺服部件的执行开度与需求值之间的对应关系；
    根据每个所述伺服部件的执行开度，控制对应的伺服部件工作。
  4. 根据权利要求3所述的方法，其特征在于，所述控制策略表中，设置有多个需求值区间，各个所述伺服部件所对应的执行开度在至少两个所述需求值区间内不同。
  5. 根据权利要求4所述的方法，其特征在于，在所述根据所述目标需求值查询预设的控制策略表，确定各个所述伺服部件的执行开度之前，包括：
    确定上一次的需求值所处的第一需求值区间；
    根据所述控制策略表，确定所述第一需求值区间的上限值及下限值；
    在所述下限值与目标需求值的差值达到区间切换阈值时，或者目标需求值与所述上限值的差值达到所述区间切换阈值时，进入所述根据所述目标需求值查询所述控制策略表，确定各个所述伺服部件的执行开度的步骤；
    在所述下限值与目标需求值的差值未达到区间切换阈值时，且目标需求值与所述上限值的差值未达到所述区间切换阈值时，维持各个所述伺服部件的当前执行开度。
  6. 根据权利要求3所述的方法，其特征在于，所述控制策略表中，在目标需求值小于或等于第一冷却阈值时，各个所述伺服部件对应的执行开度均为0；在目标需求值大于或等于第二冷却阈值时，各个所述伺服部件对应的执行开度均为开度上限值；所述第二冷却阈值大于所述第一冷却阈值。
  7. 根据权利要求1所述的方法，其特征在于，所述伺服部件包括风扇、水泵及进气格栅。
  8. 一种车辆冷却控制系统，其特征在于，所述系统包括：
    获取模块，用于在车辆运行时，获取所述车辆中每个冷却对象的当前温度值及温度变化率；
    确定模块，用于根据每个所述冷却对象的当前温度值及温度变化率，确定每个所述冷却对象的冷却需求值，所述冷却需求值用于描述对应冷却对象的冷却需求强度；
    控制模块，用于根据所有所述冷却需求值中的目标需求值和预设对应关系，确定车辆冷却系统中每个伺服部件的执行开度，并控制伺服部件按照对应的执行开度工作，以对所述冷却对象进行冷却；目标需求值包括所有所述冷却需求值中最大值。
  9. 根据权利要求8所述的系统，其特征在于，所述确定模块，具体用于根据每个所述冷却对象的当前温度值及温度变化率，查询预设的冷却需求表，确定每个所述冷却对象的冷却需求值；其中，所述冷却需求表用于描述温度值及温度变化率与冷却需求值之间的对应关系。
  10. 根据权利要求9所述的系统，其特征在于，所述控制模块包括：
    第一确定单元，用于将所有所述冷却需求值中的最大值，确定为目标需 求值；
    第二确定单元，用于根据所述目标需求值查询预设的控制策略表，确定各个所述伺服部件的执行开度；所述控制策略表用于描述每个所述伺服部件的执行开度与需求值之间的对应关系；
    控制单元，用于根据每个所述伺服部件的执行开度，控制对应的伺服部件工作。
  11. 根据权利要求10所述的系统，其特征在于，所述控制策略表中，设置有多个需求值区间，所述控制模块还包括：
    第三确定单元，用于在根据所述目标需求值查询预设的控制策略表，确定各个所述伺服部件的执行开度之前，确定上一次的需求值所处的第一需求值区间；
    第四确定单元，用于根据所述控制策略表，确定所述第一需求值区间的上限值及下限值；
    进入单元，用于在所述下限值与目标需求值的差值达到区间切换阈值时，或者目标需求值与所述上限值的差值达到所述区间切换阈值时，进入所述根据所述目标需求值查询所述控制策略表，确定各个所述伺服部件的执行开度的步骤。
  12. 一种车辆，其特征在于，所述车辆还包括如权利要求8～11任一所述的车辆冷却控制系统。
  13. 一种计算处理设备，其特征在于，包括：
    存储器，其中存储有计算机可读代码；以及
    一个或多个处理器，当所述计算机可读代码被所述一个或多个处理器执行时，所述计算处理设备执行如权利要求1-7中任一项所述的车辆冷却控制方法。
  14. 一种计算机程序，包括计算机可读代码，当所述计算机可读代码在计算处理设备上运行时，导致所述计算处理设备执行根据权利要求1-7中任一项所述的车辆冷却控制方法。
  15. 一种计算机可读介质，其中存储了如权利要求14所述的计算机程序。
PCT/CN2021/113432 2020-08-25 2021-08-19 一种车辆冷却控制方法、系统及车辆 Ceased WO2022042408A1 (zh)

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