WO2022228310A1 - Vehicle and thermal management control method and device therefor, and storage medium - Google Patents

Vehicle and thermal management control method and device therefor, and storage medium Download PDF

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Publication number
WO2022228310A1
WO2022228310A1 PCT/CN2022/088512 CN2022088512W WO2022228310A1 WO 2022228310 A1 WO2022228310 A1 WO 2022228310A1 CN 2022088512 W CN2022088512 W CN 2022088512W WO 2022228310 A1 WO2022228310 A1 WO 2022228310A1
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WIPO (PCT)
Prior art keywords
engine
current
water pump
thermal management
preset
Prior art date
Application number
PCT/CN2022/088512
Other languages
French (fr)
Chinese (zh)
Inventor
朱福堂
王春生
黄秋萍
Original Assignee
比亚迪股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 比亚迪股份有限公司 filed Critical 比亚迪股份有限公司
Priority to JP2023560372A priority Critical patent/JP2024516088A/en
Priority to EP22794781.9A priority patent/EP4296482A1/en
Priority to MX2023011980A priority patent/MX2023011980A/en
Priority to BR112023021664A priority patent/BR112023021664A2/en
Priority to AU2022267591A priority patent/AU2022267591A1/en
Publication of WO2022228310A1 publication Critical patent/WO2022228310A1/en
Priority to US18/373,221 priority patent/US20240018895A1/en

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    • 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
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
    • F01P7/167—Controlling of coolant flow the coolant being liquid by thermostatic control by adjusting the pre-set temperature according to engine parameters, e.g. engine load, engine speed
    • 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
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
    • 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
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/14—Indicating devices; Other safety devices
    • F01P11/18—Indicating devices; Other safety devices concerning coolant pressure, coolant flow, or liquid-coolant level
    • 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
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
    • 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
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
    • F01P7/162—Controlling of coolant flow the coolant being liquid by thermostatic control by cutting in and out of pumps
    • 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
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
    • F01P7/164—Controlling of coolant flow the coolant being liquid by thermostatic control by varying pump speed
    • 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
    • F01P2025/00—Measuring
    • F01P2025/08—Temperature
    • F01P2025/13—Ambient temperature
    • 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
    • F01P2025/00—Measuring
    • F01P2025/08—Temperature
    • F01P2025/32—Engine outcoming fluid temperature
    • 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
    • F01P2025/00—Measuring
    • F01P2025/08—Temperature
    • F01P2025/50—Temperature using two or more temperature sensors
    • 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
    • F01P2025/00—Measuring
    • F01P2025/60—Operating parameters
    • F01P2025/62—Load
    • 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
    • F01P2025/00—Measuring
    • F01P2025/60—Operating parameters
    • F01P2025/66—Vehicle speed
    • 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
    • F01P2037/00—Controlling
    • 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
    • F01P2050/00—Applications
    • F01P2050/22—Motor-cars

Definitions

  • the present disclosure belongs to the technical field of vehicles, and in particular, relates to a vehicle and a thermal management control method, device and storage medium thereof.
  • the opening degree of the thermostat, the rotational speed of the electronic water pump, and the rotational speed of the radiator fan are adjusted in the order of priority from high to low, so as to satisfy various working conditions.
  • it does not consider how to keep the thermal management system at the lowest power consumption while ensuring that the engine does not overheat locally during the engine warm-up process.
  • the first object of the present disclosure is to provide a thermal management control method for a vehicle.
  • the engine When the engine is in a warm-up mode with high power and low vehicle speed, by periodically controlling the water pump to start and stop. Switching between rotating states not only avoids local overheating of the engine, but also makes the thermal management system in the lowest power consumption state.
  • a second object of the present disclosure is to propose a computer-readable storage medium.
  • a third object of the present disclosure is to propose a thermal management control apparatus for a vehicle.
  • a fourth object of the present disclosure is to propose a vehicle.
  • an embodiment of the first aspect of the present disclosure provides a thermal management control method for a vehicle, the vehicle includes an engine and a thermal management system, the thermal management system includes a water pump, the engine and the water pump are connected to form a first cooling cycle, and control The method includes: when the current temperature of the engine is less than or equal to the preset temperature threshold, the total engine power is greater than or equal to the preset power threshold, and the current vehicle speed is less than or equal to the preset vehicle speed threshold, controlling the water pump to periodically start and stop running switch between states.
  • a second aspect embodiment of the present disclosure provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program, and the computer program is adapted to be executed by a processor to implement the above-mentioned first aspect embodiment.
  • Thermal management control method
  • a third aspect of the present disclosure provides a thermal management control device for a vehicle, including a processor and a memory, the processor and the memory are connected to each other; the memory is used to store a computer program, and the computer program includes program instructions , the processor is configured to invoke a program instruction to execute the thermal management control method of the embodiment of the first aspect.
  • a fourth aspect embodiment of the present disclosure provides a vehicle, including the vehicle including an engine and a thermal management system, the thermal management system including a water pump, an air-cooled radiator, a thermostat, and a vehicle according to the third aspect embodiment.
  • Thermal management control equipment including a water pump, an air-cooled radiator, a thermostat, and a vehicle according to the third aspect embodiment.
  • FIG. 1 is a schematic diagram of a vehicle provided by an embodiment of the present disclosure.
  • FIG. 2 is a schematic flowchart of a thermal management control method provided by an embodiment of the present disclosure.
  • FIG. 3 is a schematic flowchart of a thermal management control method provided by another embodiment of the present disclosure.
  • the following describes a vehicle 100 , a thermal management control method, a thermal management control apparatus, and a computer-readable storage medium of an embodiment of the present disclosure with reference to FIGS. 1-2 .
  • the vehicle 100 includes an engine 110 and a thermal management system 120 .
  • the thermal management system 120 includes a water pump 121 , an air-cooled radiator 122 , a thermostat 123 and a thermal management control device 124 .
  • the thermal management control device 124 includes a processor 124a and a memory 124b, the processor 124a and the memory 124b being interconnected, the memory 124b for storing a computer program including program instructions, the processor 124a being configured to invoke the program instructions, executing itself
  • the thermal management control method provided by the embodiment the computer-readable storage medium provided by the embodiment of the present disclosure stores a computer program, and the computer program is executed by the processor to implement the thermal management control method provided by the embodiment of the present disclosure.
  • the engine 110 and the water pump 121 are connected to form a first cooling cycle, that is, the coolant is pumped out by the water pump 121 through the engine 110 and cools the engine 110 ; the air-cooled radiator 122 is connected to the engine 110 and The water pump 121 is connected to form a second cooling cycle, that is, when the thermostat 123 is turned on, the coolant is pumped out by the water pump 121 through the engine 110 to cool the engine 110, and then enters the air-cooled radiator 122 through the thermostat 123 for cooling.
  • the first cooling cycle is a small cycle for cooling the engine 110
  • the second cooling cycle is a large cycle for cooling the engine 110 .
  • the thermal management control method provided by the embodiment of the present disclosure includes step S1 : when the current engine temperature is less than or equal to a preset temperature threshold, the total engine power is greater than or equal to the preset power threshold, and the current vehicle speed is less than or equal to the preset power threshold When equal to the preset vehicle speed threshold, the water pump is controlled to periodically switch between the start state and the stop state.
  • the engine 110 When the current engine temperature is less than or equal to the preset temperature threshold, the engine 110 may be considered to be in a warm-up state, and when the total engine power is greater than or equal to the preset power threshold and the current vehicle speed is less than or equal to the preset vehicle speed threshold, the engine 110 In the state of high power and low vehicle speed, the heat dissipation demand of the engine 110 is not high at this time, but there is a risk of local overheating. Therefore, by controlling the water pump 121 to periodically switch between the start state and the stop state, the engine 110 is avoided.
  • the temperature-related parameter of the engine 110 in the present disclosure is the temperature at which the coolant flows out of the engine 110 .
  • the preset temperature threshold may be 60°C to 80°C
  • the preset power threshold may be 5kW to 8kW
  • the preset vehicle speed threshold may be 5km/h to 10km/h
  • the preset temperature threshold may be 80°C
  • the preset power threshold can be 5kW
  • the preset speed threshold can be 5km/h.
  • step S1 includes: when the water pump is in a start-up state, the rotational speed of the water pump is a safe rotational speed of the water pump.
  • the safe speed of the water pump is the speed under the safe flow rate.
  • the so-called safe flow rate refers to the minimum flow value that satisfies the cooling of the cylinder block and the cylinder head of the engine under a certain load, that is, the flow rate that does not generate local overheating and boiling.
  • the safe water pump rotational speed MAP is queried according to the current engine speed and the current torque of the engine, and the safe water pump rotational speed is determined; wherein, the water pump safe rotational speed MAP is based on the specific conditions of the engine 110 in the development and design stage so that the engine 110 does not suffer from local overheating.
  • the minimum cooling flow is conditionalized through simulation and experimentation, and is preset in the thermal management control device 124 .
  • the step S1 includes: controlling the water pump to switch to the stop state after the water pump is in the start state and the start time has elapsed; and controlling the water pump to switch to the start state after the water pump is in the stop state and the stop time has elapsed.
  • the starting time and the stopping time are both preset fixed values. Since the engine 110 is not in a warm-up state with high power and low vehicle speed for a very long time, according to the specific conditions of the engine 110, the The startup time and the shutdown time are calibrated by simulation and experiment, and are preset in the thermal management control device 124, which can meet the basic requirements and can simplify the control program.
  • the start-up time is positively correlated with the current vehicle speed
  • the stop time is inversely correlated with the current vehicle speed. Obviously, the higher the current vehicle speed, the higher the heat dissipation requirement of the engine 110, thereby increasing the start-up time and reducing the stop time. It is more precise to ensure that the thermal management system 120 is in the lowest power consumption state.
  • the thermal management control method provided by the embodiments of the present disclosure further includes step S2: when the current temperature of the engine is less than or equal to a preset temperature threshold, controlling the rotational speed of the air-cooled radiator to 0, and controlling the thermostat The opening is 0.
  • the rotational speed of the air-cooled radiator 122 refers to the rotational speed of the fan in the air-cooled radiator 122 .
  • the engine 110 When the current temperature of the engine is less than or equal to the preset temperature threshold, it can be considered that the engine 110 is in a warm-up state, that is to say, the heat dissipation demand of the engine 110 is small, and the engine 110 can be warmed up by the self-heating of the engine 110, so the air cooling is controlled.
  • the rotational speed of the radiator 122 is 0, and the opening degree of the thermostat 123 is controlled to 0, so that the engine 110 does not participate in the cooling of the second cooling cycle, thereby ensuring that the thermal management system 120 is in the lowest power consumption state.
  • the thermal management control method provided by the embodiments of the present disclosure further includes step S3: when the current engine temperature is less than or equal to a preset temperature threshold and the total engine power is less than a preset power threshold, controlling the water pump to stop.
  • the thermal management system 120 is guaranteed to be in the lowest power consumption state.
  • the thermal management control method provided by the embodiments of the present disclosure further includes step S4: when the current engine temperature is less than or equal to a preset temperature threshold, the total engine power is greater than or equal to a preset power threshold, and the current vehicle speed is greater than or equal to a preset power threshold When the vehicle speed threshold is preset, the speed of the control water pump is the safe speed of the water pump.
  • the rotational speed of the water pump 121 is controlled to maintain the safe water pump rotational speed, which ensures a safe flow rate of the engine 110 without local overheating, and ensures the thermal management system 120 in the lowest power state.
  • step S4 may be replaced by step S4a: when the current engine temperature is less than or equal to a preset temperature threshold, the total engine power is greater than or equal to a preset power threshold, and the current vehicle speed is greater than the preset vehicle speed threshold, control The speed of the water pump is greater than or equal to the safe speed of the water pump and has a positive correlation with the current vehicle speed. Controlling the rotational speed of the water pump to increase as the current vehicle speed increases may further reduce the risk of local overheating of the engine 110 .
  • the thermal management control method provided by the embodiments of the present disclosure further includes the following steps S5-S7.
  • the preset opening threshold may be 95% to 100%, and specifically, the preset opening threshold may be 100%, that is, the thermostat 123 is fully opened.
  • the thermal management system 120 needs to continuously control the temperature of the engine 110, and when the opening degree of the thermostat 123 is greater than or equal to When it is equal to the preset opening threshold value, it can be considered that the engine 110 has entered a working state with a higher heat dissipation requirement.
  • both the water pump 121 and the air-cooled radiator 122 need to participate in the cooling of the engine 110 and make the engine 110 reach the lowest fuel consumption, that is, The most efficient working state.
  • the current engine speed, current engine torque and current ambient temperature are used as input parameters to query the engine minimum fuel consumption MAP, and finally output the total target heat dissipation that enables the engine 110 to achieve the lowest fuel consumption, that is, the most efficient working state.
  • the minimum engine fuel consumption MAP is calibrated through simulation and experiment in the R&D and design stage according to the specific conditions of the vehicle 100 , and is preset in the thermal management control device 124 under the condition that the fuel consumption of the engine 110 is the lowest.
  • the current ambient temperature refers to the air temperature outside the vehicle, that is, the intake air temperature of the engine 110 and the intake air temperature of the air-cooled radiator 122 .
  • the engine 110 When the opening degree of the thermostat 123 is greater than or equal to the preset opening degree threshold, the engine 110 is cooled through the second cooling cycle, wherein the water pump 121 and the air cooling can make the engine 110 reach the working state with the lowest fuel consumption, that is, the highest efficiency.
  • There are innumerable combinations of rotational speeds of the radiator 122 and the embodiment of the present disclosure uses the total target heat dissipation, the inlet air speed of the air-cooled radiator 122 and the current ambient temperature as input parameters to query the minimum power consumption MAP of the thermal management system, and output the water pump target
  • the combination of the rotational speed and the target rotational speed of the air-cooled radiator enables the thermal management system 120 to work in a state with the lowest power consumption.
  • the minimum power consumption MAP of the thermal management system is calibrated through simulation and experiment according to the specific conditions of the thermal management system 120 in the R&D and design stage, and is preset in the thermal management control device 124 under the condition that the power consumption of the thermal management system 120 is the lowest.
  • the inlet wind speed of the air-cooled radiator 122 is determined according to the current vehicle speed and the ambient wind speed.
  • the total target heat dissipation required for the engine to achieve the lowest fuel consumption or the highest efficiency under the current operating conditions is determined through the preset minimum fuel consumption MAP of the engine, and then through the preset minimum power consumption MAP of the thermal management system, the thermal energy in the current environment is determined.
  • the combination of the rotational speed of the water pump 121 and the rotational speed of the air-cooled radiator 122 with the lowest power consumption of the management system 120 is the target rotational speed of the water pump and the target rotational speed of the air-cooled radiator, and the water pump 121 and the air-cooled radiator 122 are controlled at the target rotational speed of the water pump and the air-cooled radiator, respectively.
  • the cold radiator runs at the target speed, so as to realize the co-optimization of thermal management system power consumption and engine fuel consumption.
  • step S5 includes the following steps S501-S503.
  • S503 Determine the total target heat dissipation amount according to the current temperature of the engine, the target temperature of the engine, and the amount of heat generated by the engine.
  • the engine minimum fuel consumption MAP Taking the current engine speed, current engine torque and current ambient temperature as input parameters, query the engine minimum fuel consumption MAP, and output the engine target temperature that enables the engine 110 to reach the lowest fuel consumption, ie, the most efficient working state.
  • the heat required by the engine from the current temperature to the target temperature can be calculated as C ⁇ M ⁇ T, where C is the specific heat capacity of the coolant, and M is the Coolant quality, coolant quality is related to flow. Therefore, the total target heat dissipation amount of engine cooling can be obtained by taking the difference between the calorific value of the engine and C ⁇ M ⁇ T.
  • the thermal management control method provided by the embodiments of the present disclosure further includes the following steps S8-S11.
  • the opening degree of the thermostat 123 can be controlled to make the engine 110 reach the target temperature so as to work with the lowest fuel consumption and the highest efficiency.
  • the management system 120 is in the lowest power consumption state.
  • the thermal management system control method provided by the embodiments of the present disclosure includes the following steps S101 to S117 .
  • step S101 determine whether it is satisfied: the current temperature of the engine is less than or equal to a preset temperature threshold, if so, it is considered that the engine 110 is in the warm-up stage, and step S102 is executed; S108.
  • step S103 determine whether it is satisfied that the total engine power is greater than or equal to the preset power threshold, if so, it is considered that the engine 110 is in a high-power warm-up mode, and step S104 is performed; if not, it is considered that the engine 110 is in a low-power warm-up mode, and steps are performed S107.
  • step S104 Determine whether the current vehicle speed is less than or equal to the preset vehicle speed threshold. If so, the engine 110 is considered to be in the high-power and low-speed warm-up mode, and step S105 is executed. If not, the engine 110 is considered to be in the high-power, high-speed warm-up mode. , and step S106 is executed.
  • the water pump when the engine 110 is in the warm-up mode with high power and low vehicle speed, the water pump is controlled to periodically switch between the start state and the stop state, and when the water pump is in the start state, the rotational speed of the water pump is the safe rotational speed of the water pump.
  • the water pump after the water pump is in the startup state and the startup time elapses, the water pump is controlled to switch to the stop state; after the water pump is in the stop state and the stop time elapses, the water pump is controlled to switch to the startup state; the startup time and the stop time are Preset fixed value.
  • step S108 when the engine 110 is in the driving stage, determine whether it satisfies: the opening degree of the thermostat is greater than or equal to the preset opening degree threshold, if so, it is considered that the engine 110 has a higher heat dissipation requirement, and step S109 is executed, if not , it is considered that the heat dissipation requirement of the engine 110 is relatively low, and step S114 is executed.
  • S110 Determine the calorific value of the engine according to the current engine speed and the current torque of the engine.
  • S111 Determine the total target heat dissipation amount according to the current temperature of the engine, the target engine temperature and the heat generation amount of the engine.
  • the thermal management system 120 query the minimum power consumption MAP of the thermal management system according to the input total target heat dissipation, the inlet air speed of the air-cooled radiator and the ambient temperature, and determine the target speed of the water pump and the target speed of the air-cooled radiator. It can be considered that the thermal management system 120 is in the lowest power consumption state when the rotational speed of the water pump 121 is the target rotational speed of the water pump and the rotational speed of the air-cooled radiator 122 is the target rotational speed of the air-cooled radiator under the current heat dissipation requirement and the current environment.
  • S115 Query the minimum fuel consumption MAP of the engine according to the current engine speed, the current torque of the engine, and the ambient temperature, and determine the target engine temperature.
  • the engine 110 when the current engine temperature is less than or equal to the preset temperature threshold, the engine 110 may be considered to be in a warm-up state, and when the total engine power is greater than or equal to the preset power threshold and the current vehicle speed When it is less than or equal to the preset vehicle speed threshold, that is, the engine 110 is in a state of high power and low vehicle speed. At this time, the heat dissipation demand of the engine 110 is not high, but there is a risk of local overheating.
  • first and second are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature delimited with “first”, “second” may expressly or implicitly include at least one of that feature.
  • plurality means at least two, such as two, three, etc., unless expressly and specifically defined otherwise.
  • Logic and/or steps represented in flowcharts or otherwise described herein, for example, may be considered an ordered listing of executable instructions for implementing the logical functions, and may be embodied in any computer-readable storage medium , for use by an instruction execution system, apparatus, or device (such as a computer-based system, a system including a processor, or other system that can fetch and execute instructions from an instruction execution system, apparatus, or device), or in conjunction with these instruction execution systems, device or equipment.
  • a "computer-readable storage medium" can be any device that can contain, store, communicate, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or apparatus .
  • computer readable storage media include the following: electrical connections with one or more wiring (electronic devices), portable computer disk cartridges (magnetic devices), random access memory (RAM) , Read Only Memory (ROM), Erasable Editable Read Only Memory (EPROM or Flash Memory), Fiber Optic Devices, and Portable Compact Disc Read Only Memory (CDROM).
  • the computer-readable storage medium may even be paper or other suitable medium on which the program can be printed, as the paper or other medium may be optically scanned, for example, and then edited, interpreted or, if necessary, otherwise Process in a suitable manner to obtain the program electronically and then store it in computer memory.
  • portions of the present disclosure may be implemented in hardware, software, firmware, or a combination thereof.
  • various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system.
  • a suitable instruction execution system For example, if implemented in hardware, as in another embodiment, it can be implemented by any one of the following techniques known in the art, or a combination thereof: discrete with logic gates for implementing logic functions on data signals Logic circuits, application specific integrated circuits with suitable combinational logic gates, Programmable Gate Arrays (PGA), Field Programmable Gate Arrays (FPGA), etc.
  • each functional unit in each embodiment of the present disclosure may be integrated into one processing module, or each unit may exist physically alone, or two or more units may be integrated into one module.
  • the above-mentioned integrated modules can be implemented in the form of hardware, and can also be implemented in the form of software function modules. If the integrated modules are implemented in the form of software functional modules and sold or used as independent products, they may also be stored in a computer-readable storage medium.
  • the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, and the like.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Hybrid Electric Vehicles (AREA)

Abstract

A vehicle (100) and a thermal management control method and device (124) therefor, and a storage medium. The vehicle (100) comprises an engine (110) and a thermal management system (120). The thermal management system (120) comprises a water pump (121). The engine (110) and the water pump (121) are connected to form a first cooling cycle. The thermal management control method comprises: if the current temperature of the engine (110) is less than or equal to a preset temperature threshold, the total power of the engine (110) is greater than or equal to a preset power threshold, and the current vehicle speed is less than or equal to a preset vehicle speed threshold, controlling the water pump (121) to periodically switch between a started state and a stopped state.

Description

一种车辆及其热管理控制方法、设备和存储介质A vehicle and its thermal management control method, device and storage medium
相关申请的交叉引用CROSS-REFERENCE TO RELATED APPLICATIONS
本公开要求于2021年04月27日提交的申请号为202110458538.7，名称为“一种车辆及其热管理控制方法、设备和存储介质”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。The present disclosure claims the priority of a Chinese patent application with application number 202110458538.7, filed on April 27, 2021, entitled "A vehicle and its thermal management control method, device, and storage medium", the entire contents of which are incorporated by reference in in this disclosure.
技术领域technical field
本公开属于车辆技术领域，尤其涉及一种车辆及其热管理控制方法、设备和存储介质。The present disclosure belongs to the technical field of vehicles, and in particular, relates to a vehicle and a thermal management control method, device and storage medium thereof.
背景技术Background technique
相关技术中的用于车辆发动机的热管理控制方法，通过对节温器的开度、电子水泵的转速、散热器风扇的转速以优先级从高到低的顺序进行调整，从而满足各工况下的散热需求，然而没有考虑到如何在发动机暖机过程中保证发动机不发生局部过热的同时，使得热管理***处于最低功耗的问题。In the thermal management control method for a vehicle engine in the related art, the opening degree of the thermostat, the rotational speed of the electronic water pump, and the rotational speed of the radiator fan are adjusted in the order of priority from high to low, so as to satisfy various working conditions. However, it does not consider how to keep the thermal management system at the lowest power consumption while ensuring that the engine does not overheat locally during the engine warm-up process.
公开内容public content
针对上述技术问题，本公开的第一个目的在于提供一种用于车辆的热管理控制方法，在发动机处于高功率、低车速的暖机模式时，通过周期性地控制水泵在启动状态和停转状态之间切换，既避免了发动机发生局部过热，还使得热管理***处于最低功耗状态。In view of the above-mentioned technical problems, the first object of the present disclosure is to provide a thermal management control method for a vehicle. When the engine is in a warm-up mode with high power and low vehicle speed, by periodically controlling the water pump to start and stop. Switching between rotating states not only avoids local overheating of the engine, but also makes the thermal management system in the lowest power consumption state.
本公开的第二个目的在于提出一种计算机可读存储介质。A second object of the present disclosure is to propose a computer-readable storage medium.
本公开的第三个目的在于提出一种用于车辆的热管理控制设备。A third object of the present disclosure is to propose a thermal management control apparatus for a vehicle.
本公开的第四个目的在于提出一种车辆。A fourth object of the present disclosure is to propose a vehicle.
为达上述目的，本公开第一方面实施例提出了一种用于车辆的热管理控制方法，车辆包括发动机和热管理***，热管理***包括水泵，发动机和水泵连接形成第一冷却循环，控制方法包括：当发动机当前温度小于或等于预设温度阈值、且发动机总功率大于或等于预设功率阈值、且当前车速小于或等于预设车速阈值时，控制水泵周期性地在启动状态和停转状态之间切换。In order to achieve the above object, an embodiment of the first aspect of the present disclosure provides a thermal management control method for a vehicle, the vehicle includes an engine and a thermal management system, the thermal management system includes a water pump, the engine and the water pump are connected to form a first cooling cycle, and control The method includes: when the current temperature of the engine is less than or equal to the preset temperature threshold, the total engine power is greater than or equal to the preset power threshold, and the current vehicle speed is less than or equal to the preset vehicle speed threshold, controlling the water pump to periodically start and stop running switch between states.
当发动机当前温度小于或等于预设温度阈值，且发动机总功率大于或等于预设功率阈值、且当前车速小于或等于预设车速阈值时，可认为发动机处于高功率、低车速的暖 机状态，通过周期性地控制水泵在启动状态和停转状态之间切换，既避免了发动机发生局部过热，还使得热管理***处于最低功耗状态。When the current temperature of the engine is less than or equal to the preset temperature threshold, and the total engine power is greater than or equal to the preset power threshold, and the current vehicle speed is less than or equal to the preset vehicle speed threshold, it can be considered that the engine is in a high-power, low-speed warm-up state, By periodically controlling the water pump to switch between the start state and the stop state, local overheating of the engine is avoided, and the thermal management system is kept in the lowest power consumption state.
为达上述目的，本公开第二方面实施例提出了一种计算机可读存储介质，计算机可读存储介质存储有计算机程序，计算机程序适于被处理器执行以实现根据上述第一方面实施例的热管理控制方法。In order to achieve the above purpose, a second aspect embodiment of the present disclosure provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program, and the computer program is adapted to be executed by a processor to implement the above-mentioned first aspect embodiment. Thermal management control method.
为达上述目的，本公开第三方面实施例提出了一种用于车辆的热管理控制设备，包括处理器和存储器，处理器和存储器相互连接；存储器用于存储计算机程序，计算机程序包括程序指令，处理器被配置为用于调用程序指令，执行上述第一方面实施例的热管理控制方法。In order to achieve the above purpose, a third aspect of the present disclosure provides a thermal management control device for a vehicle, including a processor and a memory, the processor and the memory are connected to each other; the memory is used to store a computer program, and the computer program includes program instructions , the processor is configured to invoke a program instruction to execute the thermal management control method of the embodiment of the first aspect.
为达上述目的，本公开第四方面实施例提出了一种车辆，包括车辆包括发动机和热管理***，热管理***包括水泵、风冷散热器、节温器和根据上述第三方面实施例的热管理控制设备。In order to achieve the above object, a fourth aspect embodiment of the present disclosure provides a vehicle, including the vehicle including an engine and a thermal management system, the thermal management system including a water pump, an air-cooled radiator, a thermostat, and a vehicle according to the third aspect embodiment. Thermal management control equipment.
本公开的理论方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本公开的实践了解到。Theoretical aspects and advantages of the present disclosure will be set forth in part in the description that follows, and in part will become apparent from the description below, or will be learned by practice of the disclosure.
附图说明Description of drawings
图1是本公开实施例提供的车辆的示意图。FIG. 1 is a schematic diagram of a vehicle provided by an embodiment of the present disclosure.
图2是本公开一个实施例提供的热管理控制方法的流程示意图。FIG. 2 is a schematic flowchart of a thermal management control method provided by an embodiment of the present disclosure.
图3是本公开另一个实施例提供的热管理控制方法的流程示意图。FIG. 3 is a schematic flowchart of a thermal management control method provided by another embodiment of the present disclosure.
附图标记：Reference number:
100、车辆；110、发动机；120、热管理***；121、水泵；122、风冷散热器；123、节温器；124、热管理控制设备；124a、处理器；124b、存储器。100, vehicle; 110, engine; 120, thermal management system; 121, water pump; 122, air-cooled radiator; 123, thermostat; 124, thermal management control device; 124a, processor; 124b, memory.
具体实施方式Detailed ways
下面详细描述本公开的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，旨在用于解释本公开，而不能理解为对本公开的限制。Embodiments of the present disclosure are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present disclosure and should not be construed as a limitation of the present disclosure.
下面参考附图1-2描述本公开实施例的车辆100及其热管理控制方法、热管理控制设备和计算机可读存储介质。The following describes a vehicle 100 , a thermal management control method, a thermal management control apparatus, and a computer-readable storage medium of an embodiment of the present disclosure with reference to FIGS. 1-2 .
如图1所示，车辆100包括发动机110和热管理***120，热管理***120包括水泵121、风冷散热器122、节温器123和热管理控制设备124。热管理控制设备124包 括处理器124a和存储器124b，处理器124a和存储器124b相互连接，存储器124b用于存储计算机程序，计算机程序包括程序指令，处理器124a被配置为用于调用程序指令，执行本身实施例提供的热管理控制方法。另外，本公开实施例提供的计算机可读存储介质存储有计算机程序，计算机程序被处理器执行以实现本公开实施例提供的热管理控制方法。As shown in FIG. 1 , the vehicle 100 includes an engine 110 and a thermal management system 120 . The thermal management system 120 includes a water pump 121 , an air-cooled radiator 122 , a thermostat 123 and a thermal management control device 124 . The thermal management control device 124 includes a processor 124a and a memory 124b, the processor 124a and the memory 124b being interconnected, the memory 124b for storing a computer program including program instructions, the processor 124a being configured to invoke the program instructions, executing itself The thermal management control method provided by the embodiment. In addition, the computer-readable storage medium provided by the embodiment of the present disclosure stores a computer program, and the computer program is executed by the processor to implement the thermal management control method provided by the embodiment of the present disclosure.
如图1所示，发动机110和水泵121连接形成第一冷却循环，即冷却液由水泵121泵出经过发动机110并对发动机110进行冷却；风冷散热器122通过节温器123与发动机110和水泵121连接形成第二冷却循环，即在节温器123开启时，冷却液由水泵121泵出经过发动机110并对发动机110进行冷却，然后从经过节温器123进入风冷散热器122进行冷却。需要说明的是，第一冷却循环即发动机110冷却的小循环，第二冷却循环即发动机110冷却的大循环。As shown in FIG. 1 , the engine 110 and the water pump 121 are connected to form a first cooling cycle, that is, the coolant is pumped out by the water pump 121 through the engine 110 and cools the engine 110 ; the air-cooled radiator 122 is connected to the engine 110 and The water pump 121 is connected to form a second cooling cycle, that is, when the thermostat 123 is turned on, the coolant is pumped out by the water pump 121 through the engine 110 to cool the engine 110, and then enters the air-cooled radiator 122 through the thermostat 123 for cooling. . It should be noted that the first cooling cycle is a small cycle for cooling the engine 110 , and the second cooling cycle is a large cycle for cooling the engine 110 .
参考图2所示，本公开实施例提供的热管理控制方法，包括步骤S1：当发动机当前温度小于或等于预设温度阈值、且发动机总功率大于或等于预设功率阈值、且当前车速小于或等于预设车速阈值时，控制水泵周期性地在启动状态和停转状态之间切换。Referring to FIG. 2 , the thermal management control method provided by the embodiment of the present disclosure includes step S1 : when the current engine temperature is less than or equal to a preset temperature threshold, the total engine power is greater than or equal to the preset power threshold, and the current vehicle speed is less than or equal to the preset power threshold When equal to the preset vehicle speed threshold, the water pump is controlled to periodically switch between the start state and the stop state.
当发动机当前温度小于或等于预设温度阈值时，可认为发动机110处于暖机状态，而当发动机总功率大于或等于预设功率阈值、且当前车速小于或等于预设车速阈值时，即发动机110处于高功率、低车速的状态，此时发动机110的散热需求不高，但有局部过热的风险，因此通过控制水泵121周期性地在启动状态和停转状态之间切换，从而避免了发动机110发生局部过热，且避免了因过度散热而造成的发动机110暖机时间过长以及热管理***120功耗增加，即保证了热管理***120的最低功耗。需要说明的是，本公开中发动机110的温度相关参数为冷却液流出发动机110时的温度。在一些实施例中，预设温度阈值可取60℃～80℃，预设功率阈值可取5kW～8kW，预设车速阈值可取5km/h～10km/h；在一些实施例中，预设温度阈值可取80℃，预设功率阈值可取5kW，预设车速阈值可取5km/h。When the current engine temperature is less than or equal to the preset temperature threshold, the engine 110 may be considered to be in a warm-up state, and when the total engine power is greater than or equal to the preset power threshold and the current vehicle speed is less than or equal to the preset vehicle speed threshold, the engine 110 In the state of high power and low vehicle speed, the heat dissipation demand of the engine 110 is not high at this time, but there is a risk of local overheating. Therefore, by controlling the water pump 121 to periodically switch between the start state and the stop state, the engine 110 is avoided. Local overheating occurs, and the long warm-up time of the engine 110 and the increase in power consumption of the thermal management system 120 caused by excessive heat dissipation are avoided, that is, the minimum power consumption of the thermal management system 120 is guaranteed. It should be noted that the temperature-related parameter of the engine 110 in the present disclosure is the temperature at which the coolant flows out of the engine 110 . In some embodiments, the preset temperature threshold may be 60°C to 80°C, the preset power threshold may be 5kW to 8kW, and the preset vehicle speed threshold may be 5km/h to 10km/h; in some embodiments, the preset temperature threshold may be 80℃, the preset power threshold can be 5kW, and the preset speed threshold can be 5km/h.
在一些实施例中，步骤S1包括：当水泵处于启动状态时，水泵的转速为水泵安全转速。需要说明的是，水泵安全转速为安全流量下的转速，所谓安全流量是指在一定负荷下，满足发动机的缸体和缸盖冷却的最小流量值，即不产生局部过热、沸腾的流量。在一些实施例中，根据发动机当前转速和发动机当前扭矩查询水泵安全转速MAP，确定水泵安全转速；其中，水泵安全转速MAP根据发动机110的具体情况在研发设计阶段以使发动机110不发生局部过热的最小冷却流量为条件通过仿真和实验所标定，并预设在热管理控制设备124中。In some embodiments, step S1 includes: when the water pump is in a start-up state, the rotational speed of the water pump is a safe rotational speed of the water pump. It should be noted that the safe speed of the water pump is the speed under the safe flow rate. The so-called safe flow rate refers to the minimum flow value that satisfies the cooling of the cylinder block and the cylinder head of the engine under a certain load, that is, the flow rate that does not generate local overheating and boiling. In some embodiments, the safe water pump rotational speed MAP is queried according to the current engine speed and the current torque of the engine, and the safe water pump rotational speed is determined; wherein, the water pump safe rotational speed MAP is based on the specific conditions of the engine 110 in the development and design stage so that the engine 110 does not suffer from local overheating. The minimum cooling flow is conditionalized through simulation and experimentation, and is preset in the thermal management control device 124 .
在一些实施例中，步骤S1包括：水泵处于启动状态经过启动时间后，控制水泵切换至停转状态；水泵处于停转状态经过停转时间后，控制所述水泵切换至启动状态。在一些实施例中，启动时间和停转时间均为预设固定值，由于发动机110处于高功率、低车速的暖机状态的时间并不是很长，根据发动机110的具体情况在研发设计阶段通过仿真和实验标定启动时间和停转时间，并预设在热管理控制设备124中，可满足基本要求，且可使得控制程序变得简单。在另一些实施例中，启动时间与当前车速呈正相关且停转时间与当前车速呈反相关，显然当前车速越高，发动机110的散热需求越高，进而增加启动时间以及减少停转时间，可更加精确地保证热管理***120处于最低功耗状态。In some embodiments, the step S1 includes: controlling the water pump to switch to the stop state after the water pump is in the start state and the start time has elapsed; and controlling the water pump to switch to the start state after the water pump is in the stop state and the stop time has elapsed. In some embodiments, the starting time and the stopping time are both preset fixed values. Since the engine 110 is not in a warm-up state with high power and low vehicle speed for a very long time, according to the specific conditions of the engine 110, the The startup time and the shutdown time are calibrated by simulation and experiment, and are preset in the thermal management control device 124, which can meet the basic requirements and can simplify the control program. In other embodiments, the start-up time is positively correlated with the current vehicle speed, and the stop time is inversely correlated with the current vehicle speed. Obviously, the higher the current vehicle speed, the higher the heat dissipation requirement of the engine 110, thereby increasing the start-up time and reducing the stop time. It is more precise to ensure that the thermal management system 120 is in the lowest power consumption state.
在一些实施例中，本公开实施例提供的热管理控制方法，还包括步骤S2：当发动机当前温度小于或等于预设温度阈值时，控制风冷散热器的转速为0，并控制节温器的开度为0。需要说明的是，风冷散热器122的转速指的是风冷散热器122中风扇的转速。In some embodiments, the thermal management control method provided by the embodiments of the present disclosure further includes step S2: when the current temperature of the engine is less than or equal to a preset temperature threshold, controlling the rotational speed of the air-cooled radiator to 0, and controlling the thermostat The opening is 0. It should be noted that the rotational speed of the air-cooled radiator 122 refers to the rotational speed of the fan in the air-cooled radiator 122 .
当发动机当前温度小于或等于所述预设温度阈值时，可认为发动机110处于暖机状态，也就是说发动机110的散热需求较小，可以由发动机110的自身发热进行暖机，因此控制风冷散热器122的转速为0，并控制节温器123的开度为0，使得发动机110不参与第二冷却循环的冷却，从而保证热管理***120处于最低功耗状态。When the current temperature of the engine is less than or equal to the preset temperature threshold, it can be considered that the engine 110 is in a warm-up state, that is to say, the heat dissipation demand of the engine 110 is small, and the engine 110 can be warmed up by the self-heating of the engine 110, so the air cooling is controlled. The rotational speed of the radiator 122 is 0, and the opening degree of the thermostat 123 is controlled to 0, so that the engine 110 does not participate in the cooling of the second cooling cycle, thereby ensuring that the thermal management system 120 is in the lowest power consumption state.
在一些实施例中，本公开实施例提供的热管理控制方法，还包括步骤S3：当发动机当前温度小于或等于预设温度阈值、且发动机总功率小于预设功率阈值时，控制水泵停转。In some embodiments, the thermal management control method provided by the embodiments of the present disclosure further includes step S3: when the current engine temperature is less than or equal to a preset temperature threshold and the total engine power is less than a preset power threshold, controlling the water pump to stop.
当发动机当前温度小于或等于预设温度阈值、且发动机总功率小于预设功率阈值时，可认为发动机110处于低功率的暖机状态，此时发动机110的发热量比较小，可完全用于发动机110的暖机需求，且没有局部过热的风险，即不需要冷却，因此通过控制水泵121停转，保证热管理***120处于最低功耗状态。When the current temperature of the engine is less than or equal to the preset temperature threshold and the total engine power is less than the preset power threshold, it can be considered that the engine 110 is in a low-power warm-up state. At this time, the calorific value of the engine 110 is relatively small and can be fully used for the engine 110 needs to be warmed up, and there is no risk of local overheating, that is, cooling is not required. Therefore, by controlling the water pump 121 to stop, the thermal management system 120 is guaranteed to be in the lowest power consumption state.
在一些实施例中，本公开实施例提供的热管理控制方法，还包括步骤S4：当发动机当前温度小于或等于预设温度阈值、且发动机总功率大于或等于预设功率阈值、且当前车速大于预设车速阈值时，控制水泵的转速为水泵安全转速。In some embodiments, the thermal management control method provided by the embodiments of the present disclosure further includes step S4: when the current engine temperature is less than or equal to a preset temperature threshold, the total engine power is greater than or equal to a preset power threshold, and the current vehicle speed is greater than or equal to a preset power threshold When the vehicle speed threshold is preset, the speed of the control water pump is the safe speed of the water pump.
当发动机当前温度小于或等于预设温度阈值、且发动机总功率大于或等于预设功率阈值、且当前车速大于预设车速阈值时，可认为发动机110处于高功率、高车速的暖机状态，相对于高功率、低车速状态时发动机110具有较高的局部过热的风险，因此控制水泵121的转速保持在水泵安全转速，保证了发动机110不发生局部过热的安全流量，且保证了热管理***120处于最低功耗状态。When the current engine temperature is less than or equal to the preset temperature threshold, the total engine power is greater than or equal to the preset power threshold, and the current vehicle speed is greater than the preset vehicle speed threshold, it can be considered that the engine 110 is in a high-power, high-speed warm-up state. The engine 110 has a high risk of local overheating at high power and low vehicle speed. Therefore, the rotational speed of the water pump 121 is controlled to maintain the safe water pump rotational speed, which ensures a safe flow rate of the engine 110 without local overheating, and ensures the thermal management system 120 in the lowest power state.
在另一些实施例中，步骤S4可替换为步骤S4a：当发动机当前温度小于或等于预设 温度阈值、且发动机总功率大于或等于预设功率阈值、且当前车速大于预设车速阈值时，控制水泵的转速大于或等于水泵安全转速且与当前车速呈正相关。控制水泵的转速随当前车速的增加而增加，可进一步降低发动机110发生局部过热的风险。In other embodiments, step S4 may be replaced by step S4a: when the current engine temperature is less than or equal to a preset temperature threshold, the total engine power is greater than or equal to a preset power threshold, and the current vehicle speed is greater than the preset vehicle speed threshold, control The speed of the water pump is greater than or equal to the safe speed of the water pump and has a positive correlation with the current vehicle speed. Controlling the rotational speed of the water pump to increase as the current vehicle speed increases may further reduce the risk of local overheating of the engine 110 .
在一些实施例中，本公开实施例提供的热管理控制方法，还包括如下步骤S5～S7。In some embodiments, the thermal management control method provided by the embodiments of the present disclosure further includes the following steps S5-S7.
S5、当发动机当前温度大于预设温度阈值、且节温器的开度大于或等于预设开度阈值时，根据发动机当前转速、发动机当前扭矩、当前环境温度查询发动机最低油耗MAP，确定总目标散热量；在一些实施例中，预设开度阈值可取95％～100％，具体地，预设开度阈值可取100％，即节温器123全开。S5. When the current temperature of the engine is greater than the preset temperature threshold, and the opening of the thermostat is greater than or equal to the preset opening threshold, query the minimum fuel consumption MAP of the engine according to the current engine speed, the current torque of the engine, and the current ambient temperature, and determine the overall target Heat dissipation; In some embodiments, the preset opening threshold may be 95% to 100%, and specifically, the preset opening threshold may be 100%, that is, the thermostat 123 is fully opened.
当发动机110的温度大于或等于预设温度阈值时，可认为发动机110已完成暖机，此时热管理***120需要对发动机110的温度进行持续控制，且当节温器123的开度大于或等于预设开度阈值时，可认为发动机110已进入具有较高散热需求的工作状态，此时水泵121和风冷散热器122均需要参与发动机110的冷却，并使发动机110达到油耗最低、即效率最高的工作状态。具体地，将发动机当前转速、发动机当前扭矩和当前环境温度作为输入参数，查询发动机最低油耗MAP，最终输出可使得发动机110达到油耗最低、即效率最高的工作状态的总目标散热量。其中，发动机最低油耗MAP根据车辆100的具体情况在研发设计阶段以使发动机110油耗最低为条件通过仿真和实验所标定，并预设在热管理控制设备124中。其中，当前环境温度是指车辆外的空气温度，即发动机110的进气温度和风冷散热器122的进风温度。When the temperature of the engine 110 is greater than or equal to the preset temperature threshold, it may be considered that the engine 110 has been warmed up. At this time, the thermal management system 120 needs to continuously control the temperature of the engine 110, and when the opening degree of the thermostat 123 is greater than or equal to When it is equal to the preset opening threshold value, it can be considered that the engine 110 has entered a working state with a higher heat dissipation requirement. At this time, both the water pump 121 and the air-cooled radiator 122 need to participate in the cooling of the engine 110 and make the engine 110 reach the lowest fuel consumption, that is, The most efficient working state. Specifically, the current engine speed, current engine torque and current ambient temperature are used as input parameters to query the engine minimum fuel consumption MAP, and finally output the total target heat dissipation that enables the engine 110 to achieve the lowest fuel consumption, that is, the most efficient working state. The minimum engine fuel consumption MAP is calibrated through simulation and experiment in the R&D and design stage according to the specific conditions of the vehicle 100 , and is preset in the thermal management control device 124 under the condition that the fuel consumption of the engine 110 is the lowest. The current ambient temperature refers to the air temperature outside the vehicle, that is, the intake air temperature of the engine 110 and the intake air temperature of the air-cooled radiator 122 .
S6、根据总目标散热量、风冷散热器的进风风速、当前环境温度查询热管理***最低功耗MAP，确定水泵目标转速和风冷散热器目标转速。S6. Query the minimum power consumption MAP of the thermal management system according to the total target heat dissipation, the air inlet speed of the air-cooled radiator, and the current ambient temperature, and determine the target speed of the water pump and the target speed of the air-cooled radiator.
当节温器123的开度大于或等于预设开度阈值时，通过第二冷却循环对发动机110进行冷却，其中能使发动机110达到油耗最低、即效率最高的工作状态的水泵121和风冷散热器122的转速组合有无数种，而本公开实施例将总目标散热量、风冷散热器122的进风风速和当前环境温度作为输入参数，查询热管理***最低功耗MAP，输出水泵目标转速和风冷散热器目标转速的组合，使得热管理***120在最低功耗的状态下工作。其中，热管理***最低功耗MAP根据热管理***120的具体情况在研发设计阶段以使热管理***120功耗最低为条件通过仿真和实验所标定，并预设在热管理控制设备124中。在一些实施例中，根据当前车速和环境风速，确定风冷散热器122的进风风速。When the opening degree of the thermostat 123 is greater than or equal to the preset opening degree threshold, the engine 110 is cooled through the second cooling cycle, wherein the water pump 121 and the air cooling can make the engine 110 reach the working state with the lowest fuel consumption, that is, the highest efficiency. There are innumerable combinations of rotational speeds of the radiator 122, and the embodiment of the present disclosure uses the total target heat dissipation, the inlet air speed of the air-cooled radiator 122 and the current ambient temperature as input parameters to query the minimum power consumption MAP of the thermal management system, and output the water pump target The combination of the rotational speed and the target rotational speed of the air-cooled radiator enables the thermal management system 120 to work in a state with the lowest power consumption. The minimum power consumption MAP of the thermal management system is calibrated through simulation and experiment according to the specific conditions of the thermal management system 120 in the R&D and design stage, and is preset in the thermal management control device 124 under the condition that the power consumption of the thermal management system 120 is the lowest. In some embodiments, the inlet wind speed of the air-cooled radiator 122 is determined according to the current vehicle speed and the ambient wind speed.
S7、控制水泵的转速为水泵目标转速，并控制风冷散热器的转速为风冷散热器目标转速。S7, control the rotational speed of the water pump to be the target rotational speed of the water pump, and control the rotational speed of the air-cooled radiator to be the target rotational speed of the air-cooled radiator.
通过预设的发动机最低油耗MAP确定当前工况下发动机达到油耗最低、或者说效率 最高的状态所需的总目标散热量，再通过预设的热管理***最低功耗MAP，确定当前环境下热管理***120的功耗最低的水泵121转速和风冷散热器122转速的组合，即水泵目标转速和风冷散热器目标转速，并控制水泵121和风冷散热器122分别以水泵目标转速和风冷散热器目标转速运行，从而实现对热管理***功耗和发动机油耗的共同优化。The total target heat dissipation required for the engine to achieve the lowest fuel consumption or the highest efficiency under the current operating conditions is determined through the preset minimum fuel consumption MAP of the engine, and then through the preset minimum power consumption MAP of the thermal management system, the thermal energy in the current environment is determined. The combination of the rotational speed of the water pump 121 and the rotational speed of the air-cooled radiator 122 with the lowest power consumption of the management system 120 is the target rotational speed of the water pump and the target rotational speed of the air-cooled radiator, and the water pump 121 and the air-cooled radiator 122 are controlled at the target rotational speed of the water pump and the air-cooled radiator, respectively. The cold radiator runs at the target speed, so as to realize the co-optimization of thermal management system power consumption and engine fuel consumption.
在一些实施例中，步骤S5包括如下步骤S501～S503。In some embodiments, step S5 includes the following steps S501-S503.
S501、根据发动机当前转速、发动机当前扭矩、当前环境温度查询发动机最低油耗MAP，确定发动机目标温度；S501. Query the minimum fuel consumption MAP of the engine according to the current engine speed, the current torque of the engine, and the current ambient temperature, and determine the target engine temperature;
S502、根据发动机当前转速和发动机当前扭矩，确定发动机发热量；S502. Determine the calorific value of the engine according to the current engine speed and the current torque of the engine;
S503、根据发动机当前温度、发动机目标温度和发动机发热量，确定总目标散热量。S503: Determine the total target heat dissipation amount according to the current temperature of the engine, the target temperature of the engine, and the amount of heat generated by the engine.
将发动机当前转速、发动机当前扭矩和当前环境温度作为输入参数，查询发动机最低油耗MAP，输出可使得发动机110达到油耗最低、即效率最高的工作状态的发动机目标温度。在一些实施例中，根据发动机当前温度和发动机目标温度的差值△T，可算得发动机从当前温度到目标温度所需要的热量为C·M·△T，其中C为冷却液比热容，M为冷却液质量，冷却液质量与流量相关。因此，将发动机发热量与C·M·△T作差，可得发动机冷却的总目标散热量。Taking the current engine speed, current engine torque and current ambient temperature as input parameters, query the engine minimum fuel consumption MAP, and output the engine target temperature that enables the engine 110 to reach the lowest fuel consumption, ie, the most efficient working state. In some embodiments, according to the difference ΔT between the current temperature of the engine and the target temperature of the engine, the heat required by the engine from the current temperature to the target temperature can be calculated as C·M·ΔT, where C is the specific heat capacity of the coolant, and M is the Coolant quality, coolant quality is related to flow. Therefore, the total target heat dissipation amount of engine cooling can be obtained by taking the difference between the calorific value of the engine and C·M·ΔT.
在一些实施例中，本公开实施例提供的热管理控制方法，还包括如下步骤S8～S11。In some embodiments, the thermal management control method provided by the embodiments of the present disclosure further includes the following steps S8-S11.
S8、当发动机当前温度大于或等于预设温度阈值、且节温器的开度小于预设开度阈值时，控制水泵的转速为水泵安全转速，并控制风冷散热器的转速为0；S8. When the current temperature of the engine is greater than or equal to the preset temperature threshold, and the opening of the thermostat is less than the preset opening threshold, control the speed of the water pump to be the safe speed of the water pump, and control the speed of the air-cooled radiator to be 0;
S9、根据发动机当前转速、发动机当前扭矩、当前环境温度查询发动机最低油耗MAP，确定发动机目标温度；S9. Query the minimum fuel consumption MAP of the engine according to the current engine speed, the current torque of the engine, and the current ambient temperature, and determine the target engine temperature;
S10、根据发动机当前温度和发动机目标温度，确定节温器目标开度；S10. Determine the target opening degree of the thermostat according to the current temperature of the engine and the target temperature of the engine;
S11、控制节温器的开度为节温器目标开度。S11, control the opening degree of the thermostat to be the target opening degree of the thermostat.
发动机110的温度大于或等于预设温度阈值且节温器123的开度小于预设开度阈值时，可认为发动机110已完成暖机，但发动机110未进入具有较高散热需求的工作状态，此时可通过控制节温器123的开度，使得发动机110达到目标温度以在最低油耗、最高效率的状态下工作，同时由于水泵121以最低转速运转、风冷散热器停止运转，还使得热管理***120处于最低功耗状态。When the temperature of the engine 110 is greater than or equal to the preset temperature threshold and the opening of the thermostat 123 is less than the preset opening threshold, it may be considered that the engine 110 has been warmed up, but the engine 110 has not entered a working state with a high heat dissipation requirement, At this time, the opening degree of the thermostat 123 can be controlled to make the engine 110 reach the target temperature so as to work with the lowest fuel consumption and the highest efficiency. The management system 120 is in the lowest power consumption state.
如图3所示，在一些实施例中，本公开实施例提供的热管理***控制方法，包括如下步骤S101～S117。As shown in FIG. 3 , in some embodiments, the thermal management system control method provided by the embodiments of the present disclosure includes the following steps S101 to S117 .
S101、判断是否满足：发动机当前温度小于或等于预设温度阈值，若是，则认为发动机110处于暖机阶段，执行步骤S102，若否，则认为发动机已结束暖机阶段并进入 行车阶段，执行步骤S108。S101, determine whether it is satisfied: the current temperature of the engine is less than or equal to a preset temperature threshold, if so, it is considered that the engine 110 is in the warm-up stage, and step S102 is executed; S108.
S102、发动机110处于暖机阶段时，控制风冷散热器的转速为0，并控制节温器的开度为0。S102 , when the engine 110 is in the warm-up stage, the rotational speed of the air-cooled radiator is controlled to be zero, and the opening degree of the thermostat is controlled to be zero.
S103、判断是否满足：发动机总功率大于或等于预设功率阈值，若是，则认为发动机110处于高功率暖机模式，执行步骤S104，若否，则认为发动机110处于低功率暖机模式，执行步骤S107。S103, determine whether it is satisfied that the total engine power is greater than or equal to the preset power threshold, if so, it is considered that the engine 110 is in a high-power warm-up mode, and step S104 is performed; if not, it is considered that the engine 110 is in a low-power warm-up mode, and steps are performed S107.
S104、判断是否满足：当前车速小于或等于预设车速阈值，若是，则认为发动机110处于高功率低车速暖机模式，执行步骤S105，若否，则认为发动机110处于高功率高车速暖机模式，执行步骤S106。S104. Determine whether the current vehicle speed is less than or equal to the preset vehicle speed threshold. If so, the engine 110 is considered to be in the high-power and low-speed warm-up mode, and step S105 is executed. If not, the engine 110 is considered to be in the high-power, high-speed warm-up mode. , and step S106 is executed.
S105、发动机110处于高功率低车速暖机模式时，控制水泵周期性地在启动状态和停转状态之间切换，且当水泵处于启动状态时，水泵的转速为水泵安全转速。在一些实施例中，水泵处于启动状态经过启动时间后，控制水泵切换至停转状态；水泵处于停转状态经过停转时间后，控制所述水泵切换至启动状态；启动时间和停转时间为预设固定值。S105 , when the engine 110 is in the warm-up mode with high power and low vehicle speed, the water pump is controlled to periodically switch between the start state and the stop state, and when the water pump is in the start state, the rotational speed of the water pump is the safe rotational speed of the water pump. In some embodiments, after the water pump is in the startup state and the startup time elapses, the water pump is controlled to switch to the stop state; after the water pump is in the stop state and the stop time elapses, the water pump is controlled to switch to the startup state; the startup time and the stop time are Preset fixed value.
S106、发动机110处于高功率高车速暖机模式时，控制水泵处于启动状态，且水泵的转速为水泵安全转速。S106 , when the engine 110 is in the high-power and high-speed warm-up mode, the water pump is controlled to be in a start state, and the rotational speed of the water pump is the safe rotational speed of the water pump.
S107、发动机110处于低功率暖机模式时，控制水泵处于停转状态。S107 , when the engine 110 is in the low-power warm-up mode, the water pump is controlled to be in a stop state.
S108、上接S101，发动机110处于行车阶段时，判断是否满足：节温器的开度大于或等于预设开度阈值，若是，则认为发动机110具有较高散热需求，执行步骤S109，若否，则认为发动机110的散热需求相对较低，执行步骤S114。S108. Continuing from S101, when the engine 110 is in the driving stage, determine whether it satisfies: the opening degree of the thermostat is greater than or equal to the preset opening degree threshold, if so, it is considered that the engine 110 has a higher heat dissipation requirement, and step S109 is executed, if not , it is considered that the heat dissipation requirement of the engine 110 is relatively low, and step S114 is executed.
S109、发动机110具有较高散热需求时，根据发动机当前转速、发动机当前扭矩和环境温度，查询发动机最低油耗MAP，确定发动机目标温度。可认为当前状态下的发动机110的工作温度为发动机目标温度时，发动机110处于最低油耗状态。S109 , when the engine 110 has a relatively high heat dissipation requirement, according to the current engine speed, the current torque of the engine, and the ambient temperature, the engine minimum fuel consumption MAP is inquired, and the engine target temperature is determined. It can be considered that when the operating temperature of the engine 110 in the current state is the engine target temperature, the engine 110 is in the lowest fuel consumption state.
S110、根据发动机当前转速和发动机当前扭矩，确定发动机发热量。S110. Determine the calorific value of the engine according to the current engine speed and the current torque of the engine.
S111、根据发动机当前温度、发动机目标温度和发动机发热量，确定总目标散热量。S111. Determine the total target heat dissipation amount according to the current temperature of the engine, the target engine temperature and the heat generation amount of the engine.
S112、根据输入总目标散热量、风冷散热器的进风风速和环境温度，查询热管理***最低功耗MAP，确定水泵目标转速和风冷散热器目标转速。可认为在当前散热量需求和当前环境下，水泵121的转速为水泵目标转速、风冷散热器122的转速为风冷散热器目标转速时，热管理***120处于最低功耗状态。S112 , query the minimum power consumption MAP of the thermal management system according to the input total target heat dissipation, the inlet air speed of the air-cooled radiator and the ambient temperature, and determine the target speed of the water pump and the target speed of the air-cooled radiator. It can be considered that the thermal management system 120 is in the lowest power consumption state when the rotational speed of the water pump 121 is the target rotational speed of the water pump and the rotational speed of the air-cooled radiator 122 is the target rotational speed of the air-cooled radiator under the current heat dissipation requirement and the current environment.
S113、控制水泵的转速为水泵目标转速，并控制风冷散热器的转速为风冷散热器目标转速。S113, control the rotational speed of the water pump to be the target rotational speed of the water pump, and control the rotational speed of the air-cooled radiator to be the target rotational speed of the air-cooled radiator.
S114、上接S108，发动机110的散热需求相对较低时，控制水泵的转速为水泵安全转速，并控制风冷散热器的转速为0。S114 . Continuing from S108 , when the heat dissipation demand of the engine 110 is relatively low, the rotational speed of the water pump is controlled to be the safe rotational speed of the water pump, and the rotational speed of the air-cooled radiator is controlled to be 0.
S115、根据发动机当前转速、发动机当前扭矩和环境温度，查询发动机最低油耗MAP，确定发动机目标温度。S115: Query the minimum fuel consumption MAP of the engine according to the current engine speed, the current torque of the engine, and the ambient temperature, and determine the target engine temperature.
S116、根据发动机当前温度和发动机目标温度，确定节温器目标开度。S116. Determine the target opening degree of the thermostat according to the current temperature of the engine and the target temperature of the engine.
S117、控制节温器的开度为节温器目标开度。S117, control the opening degree of the thermostat to be the target opening degree of the thermostat.
本公开实施例提供的热管理控制方法中，当发动机当前温度小于或等于预设温度阈值时，可认为发动机110处于暖机状态，而当发动机总功率大于或等于预设功率阈值、且当前车速小于或等于预设车速阈值时，即发动机110处于高功率、低车速的状态，此时发动机110的散热需求不高，但有局部过热的风险，因此通过控制水泵121周期性地在启动状态和停转状态之间切换，从而避免了发动机110发生局部过热，且避免了因过度散热而造成的发动机110暖机时间过长以及热管理***120功耗增加，即保证了热管理***120的最低功耗。In the thermal management control method provided by the embodiments of the present disclosure, when the current engine temperature is less than or equal to the preset temperature threshold, the engine 110 may be considered to be in a warm-up state, and when the total engine power is greater than or equal to the preset power threshold and the current vehicle speed When it is less than or equal to the preset vehicle speed threshold, that is, the engine 110 is in a state of high power and low vehicle speed. At this time, the heat dissipation demand of the engine 110 is not high, but there is a risk of local overheating. Therefore, by controlling the water pump 121 periodically in the startup state and Switching between the stalled states, thereby avoiding local overheating of the engine 110, and avoiding the long warm-up time of the engine 110 and the increase in power consumption of the thermal management system 120 caused by excessive heat dissipation, that is, ensuring the minimum thermal management system 120. power consumption.
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本公开的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。In the description of this specification, description with reference to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples", etc., mean specific features described in connection with the embodiment or example , structures, materials, or features are included in at least one embodiment or example of the present disclosure. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and combine the different embodiments or examples described in this specification, as well as the features of the different embodiments or examples, without conflicting each other.
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本公开的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature. In the description of the present disclosure, "plurality" means at least two, such as two, three, etc., unless expressly and specifically defined otherwise.
流程图中或在此以其他方式描述的任何过程或方法描述可以被理解为，表示包括一个或更多个用于实现定制逻辑功能或过程的步骤的可执行指令的代码的模块、片段或部分，并且本公开的优选实施方式的范围包括另外的实现，其中可以不按所示出或讨论的顺序，包括根据所涉及的功能按基本同时的方式或按相反的顺序，来执行功能，这应被本公开的实施例所属技术领域的技术人员所理解。Any process or method description in the flowcharts or otherwise described herein may be understood to represent a module, segment or portion of code comprising one or more executable instructions for implementing custom logical functions or steps of the process , and the scope of the preferred embodiments of the present disclosure includes alternative implementations in which the functions may be performed out of the order shown or discussed, including performing the functions substantially concurrently or in the reverse order depending upon the functions involved, which should It is understood by those skilled in the art to which the embodiments of the present disclosure pertain.
在流程图中表示或在此以其他方式描述的逻辑和/或步骤，例如，可以被认为是用于实现逻辑功能的可执行指令的定序列表，可以具体实现在任何计算机可读存储介质 中，以供指令执行***、装置或设备(如基于计算机的***、包括处理器的***或其他可以从指令执行***、装置或设备取指令并执行指令的***)使用，或结合这些指令执行***、装置或设备而使用。就本说明书而言，"计算机可读存储介质"可以是任何可以包含、存储、通信、传播或传输程序以供指令执行***、装置或设备或结合这些指令执行***、装置或设备而使用的装置。计算机可读存储介质的更具体的示例(非穷尽性列表)包括以下：具有一个或多个布线的电连接部(电子装置)，便携式计算机盘盒(磁装置)，随机存取存储器(RAM)，只读存储器(ROM)，可擦除可编辑只读存储器(EPROM或闪速存储器)，光纤装置，以及便携式光盘只读存储器(CDROM)。另外，计算机可读存储介质甚至可以是可在其上打印所述程序的纸或其他合适的介质，因为可以例如通过对纸或其他介质进行光学扫描，接着进行编辑、解译或必要时以其他合适方式进行处理来以电子方式获得所述程序，然后将其存储在计算机存储器中。Logic and/or steps represented in flowcharts or otherwise described herein, for example, may be considered an ordered listing of executable instructions for implementing the logical functions, and may be embodied in any computer-readable storage medium , for use by an instruction execution system, apparatus, or device (such as a computer-based system, a system including a processor, or other system that can fetch and execute instructions from an instruction execution system, apparatus, or device), or in conjunction with these instruction execution systems, device or equipment. For the purposes of this specification, a "computer-readable storage medium" can be any device that can contain, store, communicate, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or apparatus . More specific examples (non-exhaustive list) of computer readable storage media include the following: electrical connections with one or more wiring (electronic devices), portable computer disk cartridges (magnetic devices), random access memory (RAM) , Read Only Memory (ROM), Erasable Editable Read Only Memory (EPROM or Flash Memory), Fiber Optic Devices, and Portable Compact Disc Read Only Memory (CDROM). In addition, the computer-readable storage medium may even be paper or other suitable medium on which the program can be printed, as the paper or other medium may be optically scanned, for example, and then edited, interpreted or, if necessary, otherwise Process in a suitable manner to obtain the program electronically and then store it in computer memory.
应当理解，本公开的各部分可以用硬件、软件、固件或它们的组合来实现。在上述实施方式中，多个步骤或方法可以用存储在存储器中且由合适的指令执行***执行的软件或固件来实现。如，如果用硬件来实现和在另一实施方式中一样，可用本领域公知的下列技术中的任一项或他们的组合来实现：具有用于对数据信号实现逻辑功能的逻辑门电路的离散逻辑电路，具有合适的组合逻辑门电路的专用集成电路，可编程门阵列(PGA)，现场可编程门阵列(FPGA)等。It should be understood that portions of the present disclosure may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented by any one of the following techniques known in the art, or a combination thereof: discrete with logic gates for implementing logic functions on data signals Logic circuits, application specific integrated circuits with suitable combinational logic gates, Programmable Gate Arrays (PGA), Field Programmable Gate Arrays (FPGA), etc.
本技术领域的普通技术人员可以理解实现上述实施例方法携带的全部或部分步骤是可以通过程序来指令相关的硬件完成，所述的程序可以存储于一种计算机可读存储介质中，该程序在执行时，包括方法实施例的步骤之一或其组合。Those skilled in the art can understand that all or part of the steps carried by the methods of the above embodiments can be completed by instructing the relevant hardware through a program, and the program can be stored in a computer-readable storage medium, and the program can be stored in a computer-readable storage medium. When executed, one or a combination of the steps of the method embodiment is included.
此外，在本公开各个实施例中的各功能单元可以集成在一个处理模块中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。所述集成的模块如果以软件功能模块的形式实现并作为独立的产品销售或使用时，也可以存储在一个计算机可读取存储介质中。In addition, each functional unit in each embodiment of the present disclosure may be integrated into one processing module, or each unit may exist physically alone, or two or more units may be integrated into one module. The above-mentioned integrated modules can be implemented in the form of hardware, and can also be implemented in the form of software function modules. If the integrated modules are implemented in the form of software functional modules and sold or used as independent products, they may also be stored in a computer-readable storage medium.
上述提到的存储介质可以是只读存储器，磁盘或光盘等。尽管上面已经示出和描述了本公开的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本公开的限制，本领域的普通技术人员在本公开的范围内可以对上述实施例进行变化、修改、替换和变型。The above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, and the like. Although the embodiments of the present disclosure have been shown and described above, it should be understood that the above-described embodiments are exemplary and should not be construed as limitations of the present disclosure, and those of ordinary skill in the art may interpret the above-described embodiments within the scope of the present disclosure. Embodiments are subject to variations, modifications, substitutions and variations.

Claims (12)

  1. 一种用于车辆的热管理控制方法，所述车辆包括发动机和热管理***，所述热管理***包括水泵，所述发动机和所述水泵连接形成第一冷却循环，其特征在于，所述热管理控制方法包括：A thermal management control method for a vehicle, the vehicle includes an engine and a thermal management system, the thermal management system includes a water pump, the engine and the water pump are connected to form a first cooling cycle, wherein the thermal Management control methods include:
    当发动机当前温度小于或等于预设温度阈值、且发动机总功率大于或等于预设功率阈值、且当前车速小于或等于预设车速阈值时，控制所述水泵周期性地在启动状态和停转状态之间切换。When the current temperature of the engine is less than or equal to the preset temperature threshold, the total engine power is greater than or equal to the preset power threshold, and the current vehicle speed is less than or equal to the preset vehicle speed threshold, the water pump is controlled to periodically start and stop switch between.
  2. 根据权利要求1所述的热管理控制方法，其特征在于，所述当发动机当前温度小于或等于预设温度阈值、且发动机总功率大于或等于预设功率阈值、且当前车速小于或等于预设车速阈值时，控制所述水泵周期性地在启动状态和停转状态之间切换，包括：The thermal management control method according to claim 1, wherein when the current temperature of the engine is less than or equal to a preset temperature threshold, the total engine power is greater than or equal to a preset power threshold, and the current vehicle speed is less than or equal to a preset temperature When the vehicle speed threshold is reached, the water pump is controlled to periodically switch between the start state and the stop state, including:
    当所述水泵处于启动状态时，所述水泵的转速为水泵安全转速。When the water pump is in the starting state, the rotational speed of the water pump is the safe rotational speed of the water pump.
  3. 根据权利要求1或2所述的热管理控制方法，其特征在于，所述当发动机当前温度小于或等于预设温度阈值、且发动机总功率大于或等于预设功率阈值、且当前车速小于或等于预设车速阈值时，控制所述水泵周期性地在启动状态和停转状态之间切换，包括：The thermal management control method according to claim 1 or 2, wherein when the current engine temperature is less than or equal to a preset temperature threshold, the total engine power is greater than or equal to a preset power threshold, and the current vehicle speed is less than or equal to When the vehicle speed threshold is preset, the water pump is controlled to periodically switch between the start state and the stop state, including:
    所述水泵处于启动状态经过启动时间后，控制所述水泵切换至停转状态；所述水泵处于停转状态经过停转时间后，控制所述水泵切换至启动状态；After the water pump is in the startup state and the startup time has elapsed, the water pump is controlled to switch to the stop state; after the water pump is in the stop state and the stop time has elapsed, the water pump is controlled to be switched to the startup state;
    其中，所述启动时间和所述停转时间均为预设固定值，或，所述启动时间与所述当前车速呈正相关且所述停转时间与所述当前车速呈反相关。Wherein, the start time and the stop time are both preset fixed values, or the start time is positively correlated with the current vehicle speed and the stop time is inversely correlated with the current vehicle speed.
  4. 根据权利要求1～3中任一项所述的热管理控制方法，其特征在于，The thermal management control method according to any one of claims 1 to 3, wherein:
    当所述发动机当前温度小于或等于所述预设温度阈值、且所述发动机总功率小于所述预设功率阈值时，控制所述水泵停转。When the current temperature of the engine is less than or equal to the preset temperature threshold, and the total engine power is less than the preset power threshold, the water pump is controlled to stop.
  5. 根据权利要求1～4中任一项所述的热管理控制方法，其特征在于，The thermal management control method according to any one of claims 1 to 4, wherein:
    当所述发动机当前温度小于或等于所述预设温度阈值、且所述发动机总功率大于或等于所述预设功率阈值、且所述当前车速大于所述预设车速阈值时，控制所述水泵的转速为水泵安全转速；或When the current temperature of the engine is less than or equal to the preset temperature threshold, the total engine power is greater than or equal to the preset power threshold, and the current vehicle speed is greater than the preset vehicle speed threshold, control the water pump is the safe pump speed; or
    当所述发动机当前温度小于或等于所述预设温度阈值、且所述发动机总功率大于或等于所述预设功率阈值、且所述当前车速大于所述预设车速阈值时，控制所述水泵的转速大于水泵安全转速且与所述当前车速呈正相关。When the current temperature of the engine is less than or equal to the preset temperature threshold, the total engine power is greater than or equal to the preset power threshold, and the current vehicle speed is greater than the preset vehicle speed threshold, control the water pump The rotational speed of is greater than the safe rotational speed of the water pump and is positively correlated with the current vehicle speed.
  6. 根据权利要求1～5中任一项所述的热管理控制方法，其特征在于，所述热管理 ***还包括风冷散热器和节温器，所述风冷散热器通过所述节温器与所述发动机和所述水泵连接形成第二冷却循环；The thermal management control method according to any one of claims 1 to 5, wherein the thermal management system further comprises an air-cooled radiator and a thermostat, and the air-cooled radiator passes through the thermostat connecting with the engine and the water pump to form a second cooling cycle;
    所述热管理控制方法还包括：当所述发动机当前温度小于或等于所述预设温度阈值时，控制所述风冷散热器的转速为0，并控制所述节温器的开度为0。The thermal management control method further includes: when the current temperature of the engine is less than or equal to the preset temperature threshold, controlling the rotational speed of the air-cooled radiator to be 0, and controlling the opening of the thermostat to be 0 .
  7. 根据权利要求1～5中任一项所述的热管理控制方法，其特征在于，所述热管理***还包括风冷散热器和节温器，所述风冷散热器通过所述节温器与所述发动机和所述水泵连接形成第二冷却循环；The thermal management control method according to any one of claims 1 to 5, wherein the thermal management system further comprises an air-cooled radiator and a thermostat, and the air-cooled radiator passes through the thermostat connecting with the engine and the water pump to form a second cooling cycle;
    所述热管理控制方法还包括：The thermal management control method further includes:
    当所述发动机当前温度大于所述预设温度阈值、且所述节温器的开度大于或等于预设开度阈值时，根据发动机当前转速、发动机当前扭矩、当前环境温度查询发动机最低油耗MAP，确定总目标散热量；When the current temperature of the engine is greater than the preset temperature threshold and the opening of the thermostat is greater than or equal to the preset opening threshold, query the engine minimum fuel consumption MAP according to the current engine speed, the current torque of the engine, and the current ambient temperature , to determine the total target heat dissipation;
    根据所述总目标散热量、所述风冷散热器的进风风速、所述当前环境温度查询热管理***最低功耗MAP，确定水泵目标转速和风冷散热器目标转速；According to the total target heat dissipation, the air inlet wind speed of the air-cooled radiator, and the current ambient temperature, the minimum power consumption MAP of the thermal management system is inquired, and the target rotational speed of the water pump and the target rotational speed of the air-cooled radiator are determined;
    控制所述水泵的转速为所述水泵目标转速，并控制所述风冷散热器的转速为所述风冷散热器目标转速。The rotational speed of the water pump is controlled to be the target rotational speed of the water pump, and the rotational speed of the air-cooled radiator is controlled to be the target rotational speed of the air-cooled radiator.
  8. 根据权利要求7所述的热管理控制方法，其特征在于，所述当发动机当前温度大于或等于预设温度阈值、且所述节温器的开度大于或等于预设开度阈值时，根据发动机当前转速、发动机当前扭矩、当前环境温度查询发动机最低油耗MAP，确定所述发动机的总目标散热量，包括：The thermal management control method according to claim 7, wherein when the current temperature of the engine is greater than or equal to a preset temperature threshold, and the opening degree of the thermostat is greater than or equal to the preset opening threshold The current engine speed, the current torque of the engine, and the current ambient temperature are used to query the minimum fuel consumption MAP of the engine to determine the total target heat dissipation of the engine, including:
    根据所述发动机当前转速、所述发动机当前扭矩、所述当前环境温度查询所述发动机最低油耗MAP，确定发动机目标温度；Query the minimum fuel consumption MAP of the engine according to the current engine speed, the current torque of the engine, and the current ambient temperature, and determine the target engine temperature;
    根据所述发动机当前转速和所述发动机当前扭矩，确定发动机发热量；Determine the calorific value of the engine according to the current speed of the engine and the current torque of the engine;
    根据所述发动机当前温度、所述发动机目标温度和所述发动机发热量，确定所述总目标散热量。The total target heat dissipation amount is determined according to the current temperature of the engine, the target engine temperature and the amount of heat generated by the engine.
  9. 根据权利要求1～5中任一项所述的热管理控制方法，其特征在于，所述热管理***还包括风冷散热器和节温器，所述风冷散热器通过所述节温器与所述发动机和所述水泵连接形成第二冷却循环；The thermal management control method according to any one of claims 1 to 5, wherein the thermal management system further comprises an air-cooled radiator and a thermostat, and the air-cooled radiator passes through the thermostat connecting with the engine and the water pump to form a second cooling cycle;
    所述热管理控制方法还包括：The thermal management control method further includes:
    当所述发动机当前温度大于或等于所述预设温度阈值、且所述节温器的开度小于预设开度阈值时，控制所述水泵的转速为水泵安全转速，并控制所述风冷散热器的转速为0；When the current temperature of the engine is greater than or equal to the preset temperature threshold, and the opening of the thermostat is less than the preset opening threshold, control the speed of the water pump to be a safe pump speed, and control the air cooling The speed of the radiator is 0;
    根据发动机当前转速、发动机当前扭矩、当前环境温度查询发动机最低油耗MAP，确定发动机目标温度；Query the minimum fuel consumption MAP of the engine according to the current engine speed, the current torque of the engine, and the current ambient temperature, and determine the target engine temperature;
    根据所述发动机当前温度和所述发动机目标温度，确定节温器目标开度；determining a thermostat target opening degree according to the current engine temperature and the engine target temperature;
    控制所述节温器的开度为所述节温器目标开度。The opening degree of the thermostat is controlled to be the target opening degree of the thermostat.
  10. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质存储有计算机程序，所述计算机程序适于被处理器执行以实现权利要求1～9中任一项所述的热管理控制方法。A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program, and the computer program is adapted to be executed by a processor to implement the thermal management according to any one of claims 1 to 9 Control Method.
  11. 一种用于车辆的热管理控制设备，其特征在于，包括处理器和存储器，所述处理器和存储器相互连接；A thermal management control device for a vehicle, characterized by comprising a processor and a memory, the processor and the memory being connected to each other;
    所述存储器用于存储计算机程序，所述计算机程序包括程序指令，所述处理器被配置为用于调用所述程序指令，执行如权利要求1～9中任一项所述的热管理控制方法。The memory is used to store a computer program, the computer program includes program instructions, and the processor is configured to invoke the program instructions to execute the thermal management control method according to any one of claims 1 to 9 .
  12. 一种车辆，其特征在于，包括所述车辆包括发动机和热管理***，所述热管理***包括水泵、风冷散热器、节温器和根据权利要求11所述的热管理控制设备；A vehicle, characterized in that the vehicle comprises an engine and a thermal management system, the thermal management system comprising a water pump, an air-cooled radiator, a thermostat and the thermal management control device according to claim 11;
    所述发动机和所述水泵连接形成第一冷却循环，所述风冷散热器通过所述节温器与所述发动机和所述水泵连接形成第二冷却循环。The engine and the water pump are connected to form a first cooling cycle, and the air-cooled radiator is connected to the engine and the water pump through the thermostat to form a second cooling cycle.
PCT/CN2022/088512 2021-04-27 2022-04-22 Vehicle and thermal management control method and device therefor, and storage medium WO2022228310A1 (en)

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MX2023011980A MX2023011980A (en) 2021-04-27 2022-04-22 Vehicle and thermal management control method and device therefor, and storage medium.
BR112023021664A BR112023021664A2 (en) 2021-04-27 2022-04-22 THERMAL MANAGEMENT CONTROL METHOD FOR A VEHICLE, COMPUTER READABLE STORAGE MEDIA, THERMAL MANAGEMENT CONTROL DEVICE FOR A VEHICLE, AND, VEHICLE
AU2022267591A AU2022267591A1 (en) 2021-04-27 2022-04-22 Vehicle and thermal management control method and device therefor, and storage medium
US18/373,221 US20240018895A1 (en) 2021-04-27 2023-09-26 Vehicle and thermal management control method and device therefor, and storage medium

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CN115450745B (en) * 2022-06-01 2024-04-23 北京罗克维尔斯科技有限公司 Vehicle and control method, device, control equipment and medium for water temperature of engine of vehicle

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