CN115234420B - Vehicle low-temperature start control method and device and computer equipment - Google Patents

Vehicle low-temperature start control method and device and computer equipment Download PDF

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Publication number
CN115234420B
CN115234420B CN202210767703.1A CN202210767703A CN115234420B CN 115234420 B CN115234420 B CN 115234420B CN 202210767703 A CN202210767703 A CN 202210767703A CN 115234420 B CN115234420 B CN 115234420B
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China
Prior art keywords
battery
temperature
engine
cooling liquid
motor
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CN202210767703.1A
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Chinese (zh)
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CN115234420A (en
Inventor
江杰
赵子超
郑冰
靳玉刚
赵舟
钱星
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FAW Jiefang Automotive Co Ltd
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FAW Jiefang Automotive Co Ltd
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00—Starting of engines by means of electric motors
    • F02N11/006—Starting of engines by means of electric motors using a plurality of electric motors
    • 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
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • 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
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/26—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the motors or the generators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
    • B60L58/27—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by heating
    • 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
    • F01P3/00—Liquid cooling
    • F01P3/12—Arrangements for cooling other engine or machine parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00—Starting of engines by means of electric motors
    • F02N11/08—Circuits or control means specially adapted for starting of engines
    • F02N11/0803—Circuits or control means specially adapted for starting of engines characterised by means for initiating engine start or stop
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00—Starting of engines by means of electric motors
    • F02N11/08—Circuits or control means specially adapted for starting of engines
    • F02N11/0862—Circuits or control means specially adapted for starting of engines characterised by the electrical power supply means, e.g. battery
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/615—Heating or keeping warm
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/63—Control systems
    • H01M10/633—Control systems characterised by algorithms, flow charts, software details or the like
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/63—Control systems
    • H01M10/635—Control systems based on ambient temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/66—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells
    • H01M10/663—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells the system being an air-conditioner or an engine
    • 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
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/26—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the motors or the generators
    • B60K2006/268—Electric drive motor starts the engine, i.e. used as starter motor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/62—Hybrid vehicles

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • General Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
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  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The application relates to a vehicle low-temperature start control method, a device, computer equipment, a storage medium and a computer program product, wherein the temperature of a second battery is obtained, if the temperature of the second battery is less than a preset temperature, a first motor is started, a clutch is disconnected, and an engine is driven by the first motor; closing an inlet of a cooling liquid channel of the second battery, controlling cooling liquid in the cooling liquid channel of the engine to flow to the cooling liquid channel of the second battery, and adjusting the temperature of the second battery through the temperature of the cooling liquid until the temperature of the second battery is not less than a preset temperature; if the temperature of the second battery is not less than the preset temperature, the first motor is closed, the clutch is combined, the second motor is started, and the engine is driven by the second motor. In the low-temperature starting process of the vehicle, the first motor is firstly used for starting the engine, the temperature of a starting battery of the second motor is increased by utilizing heat carried by engine cooling liquid, the temperature of the starting battery of the second motor is increased, and the battery is protected.

Description

Vehicle low-temperature start control method and device and computer equipment
Technical Field
The present application relates to the field of vehicle low-temperature start technology, and in particular, to a vehicle low-temperature start control method, apparatus, computer device, storage medium, and computer program product.
Background
In recent years, hybrid power technology has been developed as a novel energy-saving and emission-reducing technology, and the advantages of the hybrid power technology relative to other technologies include: the fuel economy of the vehicle is greatly improved, the emission pollutants are reduced, the endurance mileage worry is avoided, and the service life of the existing internal combustion engine can be prolonged. The hybrid power system comprises a high-voltage battery which is used for driving the engine, and the low-temperature cold start of the battery in severe cold areas has certain disadvantages due to the characteristics of the battery, and the engine resistance moment is large under low-temperature environment, so that the motor, the battery for supplying power to the motor and the engine are easily damaged, and the service life of the internal combustion engine of the vehicle is reduced.
In the related art, the first motor and the second motor are switched to drive the engine to start by a comparison result of the engine resistance moment and the motor torque. In the related art, it is necessary to obtain the relationship between the engine resistance torque and the engine coolant temperature in advance, and control the cold start of the hybrid electric vehicle by the relationship between the torques, which is a method of indirectly managing the battery temperature.
Disclosure of Invention
In view of the foregoing, it is desirable to provide a vehicle low-temperature start control method, apparatus, computer device, computer-readable storage medium, and computer program product that are capable of effectively protecting a battery.
In a first aspect, the present application provides a vehicle low temperature start control method. The method is applied to a hybrid electric vehicle, the vehicle comprises a first motor, a second motor, an engine, a first battery and a second battery, the first battery is used for providing electric energy for the first motor, the second battery is used for providing electric energy for the second motor, the power of the second motor is larger than that of the first motor, and a communication channel exists between a cooling liquid channel of the engine and a cooling liquid channel of the second battery; the method comprises the following steps:
acquiring the temperature of the second battery;
Controlling the first motor to start under the condition that the temperature of the second battery is smaller than a preset temperature, so that a clutch of the vehicle is disconnected, and driving the engine through the output torque of the first motor;
closing an inlet of a cooling liquid channel of the second battery, controlling cooling liquid in the cooling liquid channel of the engine to flow to the cooling liquid channel of the second battery, and adjusting the temperature of the second battery through the temperature of the cooling liquid until the temperature of the second battery is not less than a preset temperature;
And under the condition that the temperature of the second battery is not less than the preset temperature, controlling the first motor to be closed so as to enable the clutch to be combined, controlling the second motor to be started, and driving the engine through the output torque of the second motor.
In one embodiment, the vehicle further comprises an electronic three-way valve; accordingly, controlling the flow of coolant in the coolant passage of the engine to the coolant passage of the second battery includes:
the communication channel is opened by adjusting the electronic three-way valve so that the cooling liquid in the cooling liquid channel of the engine flows to the cooling liquid channel of the second battery through the communication channel.
In one embodiment, the method further comprises:
and under the condition that the temperature of the second battery is not less than the preset temperature, closing the connecting channel by adjusting the electronic three-way valve, and opening a circulating channel of a cooling liquid channel of the engine.
In one embodiment, the vehicle further comprises an electronic flow regulating valve; accordingly, the method further comprises:
the flow rate of the coolant in the coolant passage of the engine is reduced by controlling the electronic flow rate regulating valve.
In one embodiment, after controlling the flow of the coolant in the coolant passage of the engine to the coolant passage of the second battery, further includes:
the temperature of the engine coolant is obtained, the idle speed of the engine is adjusted according to the temperature of the engine coolant, and the temperature of the engine coolant and the idle speed of the engine are inversely related.
In one embodiment, after controlling the flow of the coolant in the coolant passage of the engine to the coolant passage of the second battery, further includes:
And closing a radiator for cooling a cooling liquid channel of the engine, and closing a fan for cooling the radiator.
In a second aspect, the application further provides a vehicle low-temperature start control device. The device is applied to a hybrid electric vehicle, the vehicle comprises a first motor, a second motor, an engine, a first battery and a second battery, the first battery is used for providing electric energy for the first motor, the second battery is used for providing electric energy for the second motor, the power of the second motor is larger than that of the first motor, and a communication channel exists between a cooling liquid channel of the engine and a cooling liquid channel of the second battery; the device comprises:
the acquisition module is used for acquiring the temperature of the second battery;
The first control module is used for controlling the first motor to start under the condition that the temperature of the second battery is smaller than a preset temperature so as to disconnect a clutch of the vehicle and drive the engine through the output torque of the first motor;
The execution module is used for closing an inlet of a cooling liquid channel of the second battery, controlling cooling liquid in the cooling liquid channel of the engine to flow to the cooling liquid channel of the second battery, and adjusting the temperature of the second battery through the temperature of the cooling liquid until the temperature of the second battery is not less than a preset temperature;
And the second control module is used for controlling the first motor to be closed under the condition that the temperature of the second battery is not less than the preset temperature so as to enable the clutch to be combined and controlling the second motor to be started, and driving the engine through the output torque of the second motor.
In a third aspect, the present application also provides a computer device. The computer device comprises a memory storing a computer program and a processor which when executing the computer program performs the steps of:
acquiring the temperature of the second battery;
Controlling the first motor to start under the condition that the temperature of the second battery is smaller than a preset temperature, so that a clutch of the vehicle is disconnected, and driving the engine through the output torque of the first motor;
closing an inlet of a cooling liquid channel of the second battery, controlling cooling liquid in the cooling liquid channel of the engine to flow to the cooling liquid channel of the second battery, and adjusting the temperature of the second battery through the temperature of the cooling liquid until the temperature of the second battery is not less than a preset temperature;
And under the condition that the temperature of the second battery is not less than the preset temperature, controlling the first motor to be closed so as to enable the clutch to be combined, controlling the second motor to be started, and driving the engine through the output torque of the second motor.
In a fourth aspect, the present application also provides a computer-readable storage medium. The computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of:
acquiring the temperature of the second battery;
Controlling the first motor to start under the condition that the temperature of the second battery is smaller than a preset temperature, so that a clutch of the vehicle is disconnected, and driving the engine through the output torque of the first motor;
closing an inlet of a cooling liquid channel of the second battery, controlling cooling liquid in the cooling liquid channel of the engine to flow to the cooling liquid channel of the second battery, and adjusting the temperature of the second battery through the temperature of the cooling liquid until the temperature of the second battery is not less than a preset temperature;
And under the condition that the temperature of the second battery is not less than the preset temperature, controlling the first motor to be closed so as to enable the clutch to be combined, controlling the second motor to be started, and driving the engine through the output torque of the second motor.
In a fifth aspect, the present application also provides a computer program product. The computer program product comprises a computer program which, when executed by a processor, implements the steps of:
acquiring the temperature of the second battery;
Controlling the first motor to start under the condition that the temperature of the second battery is smaller than a preset temperature, so that a clutch of the vehicle is disconnected, and driving the engine through the output torque of the first motor;
closing an inlet of a cooling liquid channel of the second battery, controlling cooling liquid in the cooling liquid channel of the engine to flow to the cooling liquid channel of the second battery, and adjusting the temperature of the second battery through the temperature of the cooling liquid until the temperature of the second battery is not less than a preset temperature;
And under the condition that the temperature of the second battery is not less than the preset temperature, controlling the first motor to be closed so as to enable the clutch to be combined, controlling the second motor to be started, and driving the engine through the output torque of the second motor.
The vehicle low-temperature start control method, the vehicle low-temperature start control device, the computer equipment, the storage medium and the computer program product acquire the temperature of the second battery; controlling the first motor to start under the condition that the temperature of the second battery is smaller than a preset temperature, so that a clutch of the vehicle is disconnected, and driving the engine through the output torque of the first motor; closing an inlet of a cooling liquid channel of the second battery, controlling cooling liquid in the cooling liquid channel of the engine to flow to the cooling liquid channel of the second battery, and adjusting the temperature of the second battery through the temperature of the cooling liquid until the temperature of the second battery is not less than a preset temperature; and under the condition that the temperature of the second battery is not less than the preset temperature, controlling the first motor to be closed so as to enable the clutch to be combined, controlling the second motor to be started, and driving the engine through the output torque of the second motor. In the low-temperature starting process of the vehicle, the engine is started by the first motor, the engine cooling liquid outlet is connected with the starting battery cooling liquid inlet of the second motor, the temperature of the engine cooling liquid is heated by heat generated by starting, the temperature of the starting battery cooling liquid of the second motor is further heated, the temperature of the starting battery of the second motor is improved, and the battery is protected.
Drawings
FIG. 1 is an application scenario diagram of a vehicle low temperature start control method in one embodiment;
FIG. 2 is a flow chart of a method for controlling low temperature vehicle start in one embodiment;
FIG. 3 is a schematic diagram of an automotive thermal management architecture system in one embodiment;
FIG. 4 is a flow chart of a method for controlling low temperature start of a vehicle according to another embodiment;
FIG. 5 is a block diagram showing a configuration of a low-temperature start control device for a vehicle in one embodiment;
fig. 6 is an internal structural diagram of a computer device in one embodiment.
Detailed Description
The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
In recent years, hybrid power technology has been developed as a novel energy-saving and emission-reducing technology, and the advantages of the hybrid power technology relative to other technologies include: the fuel economy of the vehicle is greatly improved, the emission pollutants are reduced, the endurance mileage worry is avoided, and the service life of the existing internal combustion engine can be prolonged. The hybrid power system comprises a high-voltage battery which is used for driving the engine, and the low-temperature cold start of the battery in severe cold areas has certain disadvantages due to the characteristics of the battery, and the engine resistance moment is large under low-temperature environment, so that the motor, the battery for supplying power to the motor and the engine are easily damaged, and the service life of the internal combustion engine of the vehicle is reduced.
In the related art, the first motor and the second motor are switched to drive the engine to start by a comparison result of the engine resistance moment and the motor torque. In the related art, it is necessary to obtain the relationship between the engine resistance torque and the engine coolant temperature in advance, and control the cold start of the hybrid electric vehicle by the relationship between the torques, which is a method of indirectly managing the battery temperature.
The vehicle low-temperature starting control method provided by the embodiment of the application can be applied to an application environment shown in fig. 1. The application scenario of the hybrid electric vehicle architecture comprises a first battery 1 (such as a 24V storage battery and the like), a first motor 2, an engine 3, a clutch 4, a second motor 5 (the power is higher than that of the first motor), a gearbox 6, a tire 7, an engine management system 8 (ECU), a second battery 9, a second motor management system 10, a second battery management system 11 (BMS) and a hybrid vehicle management system 12 (VCU).
In one embodiment, as shown in fig. 2, a low-temperature start control method of a vehicle is provided, where the method is applied to a terminal, and the terminal is a vehicle-mounted terminal of a hybrid electric vehicle, and the hybrid electric vehicle includes a first motor, a second motor, an engine, a first battery, and a second battery, where the first battery is used to provide electric energy for the first motor, the second battery is used to provide electric energy for the second motor, the power of the second motor is greater than that of the first motor, and a communication channel exists between a coolant channel of the engine and a coolant channel of the second battery; the method comprises the following steps:
step 202, obtaining the temperature of a second battery;
step 204, under the condition that the temperature of the second battery is less than the preset temperature, controlling the first motor to start so as to disconnect a clutch of the vehicle and drive the engine through the output torque of the first motor;
Step 206, closing an inlet of a cooling liquid channel of the second battery, controlling the cooling liquid in the cooling liquid channel of the engine to flow to the cooling liquid channel of the second battery, and adjusting the temperature of the second battery through the temperature of the cooling liquid until the temperature of the second battery is not less than a preset temperature;
and step 208, controlling the first motor to be closed under the condition that the temperature of the second battery is not less than the preset temperature, so that the clutch is combined, controlling the second motor to be started, and driving the engine through the output torque of the second motor.
It should be noted that, the hybrid vehicle refers to a vehicle with dual purposes of oil and electricity, and its vehicle driving system is a vehicle formed by combining two or more single driving systems capable of running simultaneously, and adopts a traditional internal combustion engine and an electric motor as power sources to drive the engine, where the electric motor includes two motors, a second motor with larger power is used to drive the engine at normal temperature, a first motor with smaller power is used to drive the engine under special conditions, each motor has a corresponding battery to provide energy, and the voltage of the first battery corresponding to the first motor is smaller than the voltage of the second battery corresponding to the second motor. Under the low temperature condition, if the second battery with high voltage is directly used for supplying power to the second motor to drive the engine, the second battery is irreparably damaged due to the large temperature difference.
The temperature of the second battery is obtained through an installed temperature sensor, the temperature sensor can be installed on the surface of the second battery and also can be installed in a cooling liquid channel of the second battery, and the cooling liquid channel of the second battery surrounds the periphery of the second battery and is used for cooling the second battery through cooling liquid in the channel under normal conditions, so that the distance between the cooling liquid channel of the second battery and the second battery is relatively short, and the temperature of the second battery can be replaced by the temperature of the cooling liquid channel of the second battery.
The preset temperature refers to a protection temperature of a second battery of the vehicle, and influences the service life and normal discharge condition of the second battery when the real-time temperature of the second battery does not meet the preset protection temperature. The preset temperature may be a specific minimum value, for example 20 °, or a specific temperature range, for example 15 ° to 40 °. It will be appreciated that the protection temperature of different types of batteries may vary, for example, lithium batteries typically have a protection temperature of 40-60 deg., and lead acid batteries typically have a protection temperature of 20-35 deg.. It should be noted that, in the application scenario of the embodiment of the present application, the protection of the battery is performed in the low-temperature environment, and the preset temperature is the minimum value of the protection temperature of the battery, so that the preset temperature is different for different types of batteries adopted by different vehicles.
In addition, the embodiment of the present application is based on the premise that a communication passage exists between the coolant passage of the engine of the hybrid vehicle and the coolant passage of the second battery. The cooling liquid channel of the engine surrounds the periphery of the engine and is provided with a cooling liquid inlet and a cooling liquid outlet, and in the normal condition, during the running process of the engine, cooling liquid enters from the inlet and takes away heat generated by the running of the engine by flowing in the cooling liquid channel, and cooling liquid cooling equipment is arranged at the cooling liquid outlet to cool the cooling liquid (heated cooling liquid) carrying heat. The cooling liquid channel of the second battery surrounds the periphery of the second battery and is also provided with a cooling liquid inlet and a cooling liquid outlet, heat is generated in the discharging process of the second battery under normal conditions, the cooling liquid enters from the inlet, the heat generated by the discharging of the second battery is taken away by flowing in the cooling liquid channel, and a cooling liquid cooling device is arranged at the cooling liquid outlet to cool the cooling liquid (heated cooling liquid) carrying heat. It will be appreciated that the coolant passage of the engine and the coolant passage of the second battery each form a closed loop, and that the coolant flowing from the outlet flows into the coolant passage again from the inlet after the processing, and in the embodiment of the application, it is equivalent to establishing a connection between the two closed loop passages, so that the coolant in the coolant passage of the engine can flow into the coolant passage of the second battery.
Specifically, a connection passage is established between a first preset position of a coolant passage of the engine and a second preset position of a coolant passage of the second battery. The first preset position is selected to ensure that the coolant flowing through the first preset position has already flowed through a channel range within a peripheral range of the engine, that is, the coolant at the first preset position has already been warmed up through the engine. The second preset position is selected to ensure that the cooling liquid flowing through the second preset position does not flow around the second battery, and the cooling liquid at the second preset position does not flow through the second battery.
Under the premise, the temperature of the second battery is obtained, if the temperature of the second battery is not less than the preset temperature, the vehicle clutch is combined, the second battery is used for powering up the second motor at high voltage, and the engine is started through the output torque of the second motor, so that the vehicle can be normally started and can run under the condition of oil feeding, wherein the second battery is powered up to provide higher voltage, generally more than 48V. If the temperature of the second battery is smaller than the preset temperature, the vehicle can be judged to be in a low-temperature starting environment, at the moment, the vehicle clutch is disconnected, the second battery does not supply power to the second motor, the first battery powers on the first motor, the engine is started through the first motor to enable the engine to be in an idle state, at the moment, the engine generates heat, cooling liquid flowing through the engine can be heated, the heated cooling liquid flows into the cooling liquid channel of the second battery through the relation between the cooling liquid channel of the engine and the cooling liquid channel of the second battery, the temperature of the second battery is controlled to be increased until the temperature of the second battery is not smaller than the preset temperature, the vehicle battery is not in the low-temperature starting state any more, and the engine is driven through the second motor. The engine of the vehicle is in an idle state in a low-temperature environment, at the moment, the clutch of the vehicle is disconnected, the vehicle is in a neutral gear, and the engine is operated in the neutral gear condition.
In the method provided by the embodiment, the hybrid electric vehicle includes a first motor, a second motor, an engine, a first battery and a second battery, wherein the first battery is used for providing electric energy for the first motor, the second battery is used for providing electric energy for the second motor, the power of the second motor is larger than that of the first motor, a communication channel exists between a cooling liquid channel of the engine and a cooling liquid channel of the second battery, and the temperature of the second battery is obtained; controlling the first motor to start under the condition that the temperature of the second battery is smaller than a preset temperature, so that a clutch of the vehicle is disconnected, and driving the engine through the output torque of the first motor; closing an inlet of a cooling liquid channel of the second battery, controlling cooling liquid in the cooling liquid channel of the engine to flow to the cooling liquid channel of the second battery, and adjusting the temperature of the second battery through the temperature of the cooling liquid until the temperature of the second battery is not less than a preset temperature; and under the condition that the temperature of the second battery is not less than the preset temperature, controlling the first motor to be closed so as to enable the clutch to be combined, controlling the second motor to be started, and driving the engine through the output torque of the second motor. In the low-temperature starting process of the vehicle, the engine is started by the first motor, the engine cooling liquid outlet is connected with the starting battery cooling liquid inlet of the second motor, the temperature of the engine cooling liquid is heated by heat generated by starting, the temperature of the starting battery cooling liquid of the second motor is further heated, the temperature of the starting battery of the second motor is improved, and the battery is protected.
In one embodiment, the vehicle further comprises an electronic three-way valve; accordingly, controlling the flow of coolant in the coolant passage of the engine to the coolant passage of the second battery includes:
the communication channel is opened by adjusting the electronic three-way valve so that the cooling liquid in the cooling liquid channel of the engine flows to the cooling liquid channel of the second battery through the communication channel.
The electronic three-way valve is a valve which is controlled by a circuit and has three ports, and in the embodiment of the application, a one-in two-out three-way valve is used, namely, two flow directions can be formed by the circuit control, namely, a first port flows in-a second port flows out and a first port flows in-a third port flows out, and it is noted that the two flow directions of the electronic three-way valve can only meet one at a time, for example, liquid flows in from the first port, flows out from the second port or flows out from the third port.
In the embodiment of the application, the cooling liquid in the cooling liquid channel of the engine can flow to the outlet of the cooling liquid channel of the engine and also can flow to the cooling liquid channel of the second battery, so that the electronic three-way valve is arranged on a connecting channel of the cooling liquid channel of the engine and the cooling liquid channel of the second battery, specifically, a first through hole and a second through hole of the electronic three-way valve are arranged at a first preset position of the cooling liquid channel of the engine and are used for enabling the cooling liquid of the engine to flow in a closed loop in the cooling liquid channel of the engine, and a third through hole is arranged at a second preset position of the cooling liquid channel of the second battery and is used for enabling the cooling liquid in the cooling liquid channel of the engine to flow into the cooling liquid channel of the second battery.
Specifically, when the temperature of the second battery is less than the preset temperature, the control circuit of the electronic three-way valve is adjusted by issuing a command to change the flow direction of the electronic three-way valve from 'first port inflow-second port outflow' to 'first port inflow-third port outflow', so that the cooling liquid in the cooling liquid channel of the engine flows to the cooling liquid channel of the second battery through the communication channel.
In the method provided by the above embodiment, the vehicle further includes an electronic three-way valve, and the communication passage is opened by adjusting the electronic three-way valve so that the coolant in the coolant passage of the engine flows to the coolant passage of the second battery through the communication passage. In the low-temperature starting process of the vehicle, the engine is started by the first motor, the engine cooling liquid outlet is connected with the starting battery cooling liquid inlet of the second motor, the temperature of the engine cooling liquid is heated by heat generated by starting, the temperature of the starting battery cooling liquid of the second motor is further heated, the temperature of the starting battery of the second motor is improved, and the battery is protected.
In one embodiment, the method further comprises:
and under the condition that the temperature of the second battery is not less than the preset temperature, closing the connecting channel by adjusting the electronic three-way valve, and opening a circulating channel of a cooling liquid channel of the engine.
It can be understood that after the temperature of the second battery is increased, the temperature of the second battery needs to be stopped in time, because the service life and the discharge efficiency of the battery are also affected when the temperature of the battery is higher, at this time, the flow direction of the electronic three-way valve should be adjusted from 'first through-third through outflow' to 'first through-second through outflow' by the control circuit of the electronic three-way valve, so that the cooling liquid channel of the engine realizes a closed loop circulation channel, and the cooling liquid channel of the second battery is also a closed loop circulation channel, at this time, the operation of the two channels is not affected mutually.
In the method provided in the above embodiment, the electronic three-way valve is adjusted to close the connection channel and open the circulation channel of the coolant channel of the engine when the temperature of the second battery is not less than the preset temperature. And the electronic three-way valve is timely adjusted according to different temperatures of the second battery, the flow direction conditions of the cooling liquid in the cooling liquid channel of the engine and the cooling liquid channel of the second battery are adjusted, and the service condition of the second battery of the automobile is guaranteed in real time.
In one embodiment, the vehicle further comprises an electronic flow regulating valve; accordingly, the method further comprises:
the flow rate of the coolant in the coolant passage of the engine is reduced by controlling the electronic flow rate regulating valve.
The electronic regulating valve is an electronic accessory and comprises an executing structure and a regulating valve, and is used for automatically controlling the opening of the valve according to signals of a regulating part, so that the regulation of the medium flow, the pressure and the direction is achieved. In the present embodiment, the electronic flow rate regulating valve is one of electronic regulating valves for regulating the coolant flow rate of the coolant passage of the engine. It will be appreciated that when the engine is driven by the first electric machine, the engine will generate heat, and the coolant in the coolant passage of the engine will carry the heat of the engine after flowing through the engine, i.e. the engine will heat the coolant, at which point the heat generated by the engine is constant, so that the less coolant in the coolant passage of the engine, the higher the temperature rise of the heated coolant, and the faster the temperature rise of the heated coolant. After the heated cooling liquid flows into the cooling liquid channel of the second battery through the electronic three-way valve, heat can be transferred due to the temperature difference between the second battery and the heated cooling liquid, so that the second battery can be heated, and as can be understood, the higher the temperature of the heated cooling liquid is, the faster the temperature of the heated cooling liquid is increased, and the higher and faster the temperature of the heated second battery is increased.
The electronic flow rate adjustment valve is used only to adjust the flow rate of the coolant in the engine coolant passage so that the flow rate of the coolant in the closed-loop passage that heats the second battery is changed, and the installation position thereof is not particularly limited in this embodiment.
In the method provided in the above embodiment, the vehicle further includes an electronic flow rate adjustment valve; the electronic flow regulating valve is controlled to reduce the flow of the cooling liquid in the cooling liquid channel of the engine, so that the second battery can be heated quickly, the temperature of the second battery is raised faster, and the use requirement of a user on the vehicle can be responded quickly.
In one embodiment, after controlling the flow of the coolant in the coolant passage of the engine to the coolant passage of the second battery, further includes:
the temperature of the engine coolant is obtained, the idle speed of the engine is adjusted according to the temperature of the engine coolant, and the temperature of the engine coolant and the idle speed of the engine are inversely related.
Idle speed is a working condition of an automobile, which means that an engine is operated in a neutral condition. The rotational speed of the engine at idle is referred to as idle rotational speed. The idle speed can be adjusted by adjusting the size of the throttle, etc. The idling is that the engine is not operated, at the moment, most of mechanical energy generated by mechanical working of the engine is converted into heat energy, for example, the rotating internal parts of the engine generate heat by friction, and the heat of the part of heat can be taken away by cooling liquid in a cooling liquid channel of the engine so as to achieve the effect of cooling the engine.
In the embodiment of the application, it can be known that the second battery is heated by using the cooling liquid carrying heat in the engine cooling liquid channel when the vehicle is started at a low temperature, so that the higher the temperature of the cooling liquid is, the faster the second battery is heated and the higher the temperature is raised, and the higher the idling rotation speed is, the more the generated heat is, the temperature of the cooling liquid in the engine cooling liquid channel is changed by adjusting the idling rotation speed of the engine, so that the second battery is quickly heated.
Specifically, the temperature of the engine coolant may be obtained, the engine idle speed adjusted according to the temperature of the engine coolant, for example, a relation between the temperature of the engine coolant and the engine idle speed is stored in the vehicle-mounted terminal, after the temperature of the engine coolant is obtained, an instruction of "the temperature of the engine coolant-the engine idle speed" is triggered according to the temperature of the engine coolant, and the engine idle speed is adjusted to a desired speed according to the instruction.
In the method provided in the above embodiment, the temperature of the engine coolant is obtained, and the idle speed of the engine is adjusted according to the temperature of the engine coolant, where the temperature of the engine coolant and the idle speed of the engine are inversely related. By adjusting the idle speed of the engine, the rapid temperature rise of the second battery is realized.
In one embodiment, after controlling the flow of the coolant in the coolant passage of the engine to the coolant passage of the second battery, further includes:
And closing a radiator for cooling a cooling liquid channel of the engine, and closing a fan for cooling the radiator.
It should be noted that, the cooling liquid channel of the engine further includes a radiator for cooling the heated cooling liquid, and according to the above explanation, the application needs to heat the second battery by using the heated cooling liquid, so as to ensure rapid heating of the second battery, and close the radiator for cooling the cooling liquid, so that a large amount of heat carried by the cooling liquid is transferred to the second battery. At this time, the radiator is not operated, so the fan for cooling the radiator in the vehicle should be turned off. And by closing the cooling liquid radiator and the radiator cooling fan, a large amount of heat transfer is ensured, and the temperature rising speed of the second battery is improved.
In accordance with the explanation of the above embodiment, in one specific embodiment, the vehicle low temperature start control method is applied to the thermal management architecture system shown in fig. 3, which includes: a radiator 13, an electronic clutch fan 14, a second motor thermal management system 15, an electronic three-way valve 16, an electronic switch valve 17, an electronic flow regulating valve 18 and a high-voltage battery thermal management system 19.
The flow of the vehicle low-temperature start control method applied to the thermal management structure system is shown in fig. 4, and includes:
S1: powering up a key to start the vehicle;
s2: acquiring the temperature of the second battery, and comparing the temperature T 2 of the second battery with the protection temperature T D of the second battery;
S3: if the temperature T 2 of the second battery is not less than the protection temperature T D of the second battery, the clutch 4 is combined, the second motor 5 is electrified at high voltage, and the engine 3 is started through torque control of the second motor 5;
s4: if the temperature T 2 of the second battery is smaller than the protection temperature T D of the second battery, the clutch 4 is disconnected, the second motor 5 is powered off at high voltage, the engine 3 is started through the first motor 2, and the flow direction of the cooling liquid is changed through the electronic three-way valve 16; inquiring an instruction of 'engine water temperature-engine idle speed' through the current coolant temperature of the engine 3, and dynamically increasing the idle speed of the engine; closing a radiator 13 and an electronic clutch fan 14 of the engine 3; the electronic flow regulating valve 18 regulates the flow of the cooling liquid of the engine 3;
S5: and detecting the temperature of the second battery in real time, and if the temperature T 2 of the second battery is not less than the protection temperature T D of the second battery, executing step S3.
It should be understood that, although the steps in the flowcharts related to the above embodiments are sequentially shown as indicated by arrows, these steps are not necessarily sequentially performed in the order indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least some of the steps in the flowcharts described in the above embodiments may include a plurality of steps or a plurality of stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of the steps or stages is not necessarily performed sequentially, but may be performed alternately or alternately with at least some of the other steps or stages.
Based on the same inventive concept, the embodiment of the application also provides a vehicle low-temperature start control device for realizing the vehicle low-temperature start control method. The implementation of the solution provided by the device is similar to the implementation described in the above method, so the specific limitation in the embodiments of the low-temperature start control device for a vehicle provided below may be referred to the limitation of the low-temperature start control method for a vehicle hereinabove, and will not be repeated herein.
In one embodiment, as shown in fig. 5, there is provided a vehicle low-temperature start control device, the device being applied to a hybrid vehicle, the vehicle including a first motor, a second motor, an engine, a first battery for supplying electric power to the first motor, and a second battery for supplying electric power to the second motor, the second motor having a power greater than that of the first motor, a communication passage being provided between a coolant passage of the engine and a coolant passage of the second battery; the device comprises: an acquisition module 501, a first control module 502, an execution module 503, and a second control module 504, wherein:
an acquisition module 501 for acquiring the temperature of the second battery;
A first control module 502 for controlling the first motor to be started to disconnect the clutch of the vehicle and drive the engine through the output torque of the first motor when the temperature of the second battery is less than a preset temperature;
An execution module 503, configured to close an inlet of a coolant channel of the second battery, control coolant in the coolant channel of the engine to flow to the coolant channel of the second battery, and adjust a temperature of the second battery by a temperature of the coolant until the temperature of the second battery is not less than a preset temperature;
And the second control module 504 is used for controlling the first motor to be turned off under the condition that the temperature of the second battery is not less than the preset temperature, so that the clutch is combined, controlling the second motor to be started, and driving the engine through the output torque of the second motor.
In one embodiment, the vehicle further comprises an electronic three-way valve; accordingly, the execution module 503 is further configured to:
the communication channel is opened by adjusting the electronic three-way valve so that the cooling liquid in the cooling liquid channel of the engine flows to the cooling liquid channel of the second battery through the communication channel.
In one embodiment, the execution module 503 is further configured to:
and under the condition that the temperature of the second battery is not less than the preset temperature, closing the connecting channel by adjusting the electronic three-way valve, and opening a circulating channel of a cooling liquid channel of the engine.
In one embodiment, the vehicle further comprises an electronic flow regulating valve; accordingly, the execution module 503 is further configured to:
the flow rate of the coolant in the coolant passage of the engine is reduced by controlling the electronic flow rate regulating valve.
In one embodiment, the execution module 503 is further configured to:
the temperature of the engine coolant is obtained, the idle speed of the engine is adjusted according to the temperature of the engine coolant, and the temperature of the engine coolant and the idle speed of the engine are inversely related.
In one embodiment, the execution module 503 is further configured to:
And closing a radiator for cooling a cooling liquid channel of the engine, and closing a fan for cooling the radiator.
The above-described respective modules in the vehicle low-temperature start control apparatus may be implemented in whole or in part by software, hardware, and a combination thereof. The above modules may be embedded in hardware or may be independent of a processor in the computer device, or may be stored in software in a memory in the computer device, so that the processor may call and execute operations corresponding to the above modules.
In one embodiment, a computer device is provided, which may be a server, the internal structure of which may be as shown in fig. 6. The computer device includes a processor, a memory, and a network interface connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, computer programs, and a database. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The database of the computer device is used to store battery temperature data. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program when executed by a processor implements a vehicle cold start control method.
It will be appreciated by those skilled in the art that the structure shown in FIG. 6 is merely a block diagram of some of the structures associated with the present inventive arrangements and is not limiting of the computer device to which the present inventive arrangements may be applied, and that a particular computer device may include more or fewer components than shown, or may combine some of the components, or have a different arrangement of components.
In one embodiment, a computer device is provided comprising a memory and a processor, the memory having stored therein a computer program, the processor when executing the computer program performing the steps of:
acquiring the temperature of the second battery;
Controlling the first motor to start under the condition that the temperature of the second battery is smaller than a preset temperature, so that a clutch of the vehicle is disconnected, and driving the engine through the output torque of the first motor;
closing an inlet of a cooling liquid channel of the second battery, controlling cooling liquid in the cooling liquid channel of the engine to flow to the cooling liquid channel of the second battery, and adjusting the temperature of the second battery through the temperature of the cooling liquid until the temperature of the second battery is not less than a preset temperature;
And under the condition that the temperature of the second battery is not less than the preset temperature, controlling the first motor to be closed so as to enable the clutch to be combined, controlling the second motor to be started, and driving the engine through the output torque of the second motor.
In one embodiment, the vehicle further comprises an electronic three-way valve; accordingly, the processor when executing the computer program also performs the steps of:
the communication channel is opened by adjusting the electronic three-way valve so that the cooling liquid in the cooling liquid channel of the engine flows to the cooling liquid channel of the second battery through the communication channel.
In one embodiment, the processor when executing the computer program further performs the steps of:
and under the condition that the temperature of the second battery is not less than the preset temperature, closing the connecting channel by adjusting the electronic three-way valve, and opening a circulating channel of a cooling liquid channel of the engine.
In one embodiment, the vehicle further comprises an electronic flow regulating valve; accordingly, the processor when executing the computer program also performs the steps of:
the flow rate of the coolant in the coolant passage of the engine is reduced by controlling the electronic flow rate regulating valve.
In one embodiment, the processor when executing the computer program further performs the steps of:
the temperature of the engine coolant is obtained, the idle speed of the engine is adjusted according to the temperature of the engine coolant, and the temperature of the engine coolant and the idle speed of the engine are inversely related.
In one embodiment, the processor when executing the computer program further performs the steps of:
And closing a radiator for cooling a cooling liquid channel of the engine, and closing a fan for cooling the radiator.
In one embodiment, a computer readable storage medium is provided having a computer program stored thereon, which when executed by a processor, performs the steps of:
acquiring the temperature of the second battery;
Controlling the first motor to start under the condition that the temperature of the second battery is smaller than a preset temperature, so that a clutch of the vehicle is disconnected, and driving the engine through the output torque of the first motor;
closing an inlet of a cooling liquid channel of the second battery, controlling cooling liquid in the cooling liquid channel of the engine to flow to the cooling liquid channel of the second battery, and adjusting the temperature of the second battery through the temperature of the cooling liquid until the temperature of the second battery is not less than a preset temperature;
And under the condition that the temperature of the second battery is not less than the preset temperature, controlling the first motor to be closed so as to enable the clutch to be combined, controlling the second motor to be started, and driving the engine through the output torque of the second motor.
In one embodiment, the vehicle further comprises an electronic three-way valve; accordingly, the computer program when executed by the processor also performs the steps of:
the communication channel is opened by adjusting the electronic three-way valve so that the cooling liquid in the cooling liquid channel of the engine flows to the cooling liquid channel of the second battery through the communication channel.
In one embodiment, the computer program when executed by the processor further performs the steps of:
and under the condition that the temperature of the second battery is not less than the preset temperature, closing the connecting channel by adjusting the electronic three-way valve, and opening a circulating channel of a cooling liquid channel of the engine.
In one embodiment, the vehicle further comprises an electronic flow regulating valve; accordingly, the computer program when executed by the processor also performs the steps of:
the flow rate of the coolant in the coolant passage of the engine is reduced by controlling the electronic flow rate regulating valve.
In one embodiment, the computer program when executed by the processor further performs the steps of:
the temperature of the engine coolant is obtained, the idle speed of the engine is adjusted according to the temperature of the engine coolant, and the temperature of the engine coolant and the idle speed of the engine are inversely related.
In one embodiment, the computer program when executed by the processor further performs the steps of:
And closing a radiator for cooling a cooling liquid channel of the engine, and closing a fan for cooling the radiator.
In one embodiment, a computer program product is provided comprising a computer program which, when executed by a processor, performs the steps of:
acquiring the temperature of the second battery;
Controlling the first motor to start under the condition that the temperature of the second battery is smaller than a preset temperature, so that a clutch of the vehicle is disconnected, and driving the engine through the output torque of the first motor;
closing an inlet of a cooling liquid channel of the second battery, controlling cooling liquid in the cooling liquid channel of the engine to flow to the cooling liquid channel of the second battery, and adjusting the temperature of the second battery through the temperature of the cooling liquid until the temperature of the second battery is not less than a preset temperature;
And under the condition that the temperature of the second battery is not less than the preset temperature, controlling the first motor to be closed so as to enable the clutch to be combined, controlling the second motor to be started, and driving the engine through the output torque of the second motor.
In one embodiment, the vehicle further comprises an electronic three-way valve; accordingly, the computer program when executed by the processor also performs the steps of:
the communication channel is opened by adjusting the electronic three-way valve so that the cooling liquid in the cooling liquid channel of the engine flows to the cooling liquid channel of the second battery through the communication channel.
In one embodiment, the computer program when executed by the processor further performs the steps of:
and under the condition that the temperature of the second battery is not less than the preset temperature, closing the connecting channel by adjusting the electronic three-way valve, and opening a circulating channel of a cooling liquid channel of the engine.
In one embodiment, the vehicle further comprises an electronic flow regulating valve; accordingly, the computer program when executed by the processor also performs the steps of:
the flow rate of the coolant in the coolant passage of the engine is reduced by controlling the electronic flow rate regulating valve.
In one embodiment, the computer program when executed by the processor further performs the steps of:
the temperature of the engine coolant is obtained, the idle speed of the engine is adjusted according to the temperature of the engine coolant, and the temperature of the engine coolant and the idle speed of the engine are inversely related.
In one embodiment, the computer program when executed by the processor further performs the steps of:
And closing a radiator for cooling a cooling liquid channel of the engine, and closing a fan for cooling the radiator.
The user information (including but not limited to user equipment information, user personal information, etc.) and the data (including but not limited to data for analysis, stored data, presented data, etc.) related to the present application are information and data authorized by the user or sufficiently authorized by each party.
Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, database, or other medium used in embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, high density embedded nonvolatile Memory, resistive random access Memory (ReRAM), magneto-resistive random access Memory (Magnetoresistive Random Access Memory, MRAM), ferroelectric Memory (Ferroelectric Random Access Memory, FRAM), phase change Memory (PHASE CHANGE Memory, PCM), graphene Memory, and the like. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory, and the like. By way of illustration, and not limitation, RAM can be in various forms such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM), etc. The databases referred to in the embodiments provided herein may include at least one of a relational database and a non-relational database. The non-relational database may include, but is not limited to, a blockchain-based distributed database, and the like. The processor referred to in the embodiments provided in the present application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic unit, a data processing logic unit based on quantum computing, or the like, but is not limited thereto.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The foregoing examples illustrate only a few embodiments of the application and are described in detail herein without thereby limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of the application should be assessed as that of the appended claims.

Claims (10)

1. A vehicle low-temperature start control method is characterized in that the method is applied to a hybrid vehicle, the vehicle comprises a first motor, a second motor, an engine, a first battery and a second battery, the first battery is used for providing electric energy for the first motor, the second battery is used for providing electric energy for the second motor, the power of the second motor is larger than that of the first motor, and a communication channel exists between a cooling liquid channel of the engine and a cooling liquid channel of the second battery; the method comprises the following steps:
Acquiring the temperature of the second battery;
Controlling the first motor to start under the condition that the temperature of the second battery is smaller than a preset temperature, so that a clutch of the vehicle is disconnected, and driving an engine through the output torque of the first motor;
closing an inlet of a cooling liquid channel of the second battery, controlling cooling liquid in the cooling liquid channel of the engine to flow to the cooling liquid channel of the second battery, and adjusting the temperature of the second battery through the temperature of the cooling liquid until the temperature of the second battery is not less than the preset temperature;
and under the condition that the temperature of the second battery is not less than the preset temperature, controlling the first motor to be closed so as to enable the clutch to be combined, controlling the second motor to be started, and driving the engine through the output torque of the second motor.
2. The method of claim 1, wherein the vehicle further comprises an electronic three-way valve; accordingly, the controlling the flow of the coolant in the coolant passage of the engine to the coolant passage of the second battery includes:
And opening the communication channel by adjusting the electronic three-way valve so that the cooling liquid in the cooling liquid channel of the engine flows to the cooling liquid channel of the second battery through the communication channel.
3. The method according to claim 2, wherein the method further comprises:
And under the condition that the temperature of the second battery is not less than the preset temperature, closing the communication channel by adjusting the electronic three-way valve, and opening a circulation channel of a cooling liquid channel of the engine.
4. The method of claim 2, wherein the vehicle further comprises an electronic flow regulating valve; accordingly, the method further comprises:
And reducing the flow of the cooling liquid in the cooling liquid channel of the engine by controlling the electronic flow regulating valve.
5. The method of claim 4, wherein after the controlling the flow of the coolant in the coolant passage of the engine to the coolant passage of the second battery, further comprises:
and acquiring the temperature of the engine cooling liquid, and adjusting the idle speed of the engine according to the temperature of the engine cooling liquid, wherein the temperature of the engine cooling liquid and the idle speed of the engine are in negative correlation.
6. The method of claim 5, wherein after the controlling the flow of the coolant in the coolant passage of the engine to the coolant passage of the second battery, further comprises:
And closing a radiator for cooling a cooling liquid channel of the engine, and closing a fan for cooling the radiator.
7. A low-temperature start control device of a vehicle, which is characterized in that the device is applied to a hybrid vehicle, the vehicle comprises a first motor, a second motor, an engine, a first battery and a second battery, the first battery is used for providing electric energy for the first motor, the second battery is used for providing electric energy for the second motor, the power of the second motor is larger than that of the first motor, and a communication channel exists between a cooling liquid channel of the engine and a cooling liquid channel of the second battery; the device comprises:
An acquisition module for acquiring the temperature of the second battery;
A first control module for controlling the first motor to be started under the condition that the temperature of the second battery is less than a preset temperature, so that a clutch of the vehicle is disconnected, and an engine is driven by the output torque of the first motor;
the execution module is used for closing an inlet of a cooling liquid channel of the second battery, controlling the cooling liquid in the cooling liquid channel of the engine to flow to the cooling liquid channel of the second battery, and adjusting the temperature of the second battery through the temperature of the cooling liquid until the temperature of the second battery is not less than the preset temperature;
And the second control module is used for controlling the first motor to be closed under the condition that the temperature of the second battery is not less than the preset temperature so as to enable the clutch to be combined and controlling the second motor to be started, and driving the engine through the output torque of the second motor.
8. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor implements the steps of the method of any of claims 1 to 6 when the computer program is executed.
9. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the method of any of claims 1 to 6.
10. A computer program product comprising a computer program, characterized in that the computer program, when being executed by a processor, implements the steps of the method of any of claims 1 to 6.
CN202210767703.1A 2022-07-01 2022-07-01 Vehicle low-temperature start control method and device and computer equipment Active CN115234420B (en)

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Publication number Priority date Publication date Assignee Title
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CN111347928A (en) * 2018-12-21 2020-06-30 比亚迪股份有限公司 Vehicle and power battery temperature control device thereof
CN111354998A (en) * 2018-12-21 2020-06-30 比亚迪股份有限公司 Vehicle and temperature control device thereof
WO2022007683A1 (en) * 2020-07-06 2022-01-13 长城汽车股份有限公司 Exhaust heat recovery system and method for new energy vehicle, and new energy vehicle
CN114388927A (en) * 2021-09-27 2022-04-22 岚图汽车科技有限公司 Power battery cooling control method and related equipment

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Publication number Priority date Publication date Assignee Title
CN107946698A (en) * 2017-10-27 2018-04-20 宁波吉利罗佑发动机零部件有限公司 Battery temperature control method and its system, the automobile of a kind of motor vehicle driven by mixed power
CN111347928A (en) * 2018-12-21 2020-06-30 比亚迪股份有限公司 Vehicle and power battery temperature control device thereof
CN111354998A (en) * 2018-12-21 2020-06-30 比亚迪股份有限公司 Vehicle and temperature control device thereof
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