CN114211931A - Thermal management system and method of vehicle and vehicle - Google Patents

Thermal management system and method of vehicle and vehicle Download PDF

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Publication number
CN114211931A
CN114211931A CN202111478962.4A CN202111478962A CN114211931A CN 114211931 A CN114211931 A CN 114211931A CN 202111478962 A CN202111478962 A CN 202111478962A CN 114211931 A CN114211931 A CN 114211931A
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China
Prior art keywords
intelligent driving
thermal management
switch state
vehicle
pwm
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Granted
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CN202111478962.4A
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Chinese (zh)
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CN114211931B (en
Inventor
李晓燕
林新峰
吴亚东
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Chery New Energy Automobile Co Ltd
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Chery New Energy Automobile Co Ltd
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Priority to CN202111478962.4A priority Critical patent/CN114211931B/en
Publication of CN114211931A publication Critical patent/CN114211931A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00357—Air-conditioning arrangements specially adapted for particular vehicles
    • B60H1/00385—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
    • B60H1/00278—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit for the battery
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
    • B60H1/2215—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from electric heaters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
    • B60L58/26—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • 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
    • 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
    • H01M10/613—Cooling or keeping cold
    • 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
    • H01M10/66—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
    • B60H2001/00307—Component temperature regulation using a liquid flow
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electrochemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Chemical & Material Sciences (AREA)
  • Sustainable Development (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Energy (AREA)
  • Transportation (AREA)
  • Power Engineering (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The application relates to a vehicle thermal management system, a method and a vehicle, wherein the system comprises: the heat management assembly is respectively connected with an intelligent driving system, a battery heat management system and an electric driving system of the vehicle and a refrigerating loop or a heating loop of a passenger compartment; the switch component has a plurality of switch states, and each switch state corresponds to the connection mode among the intelligent driving system, the battery thermal management system, the electric drive system and the refrigerating circuit or the heating circuit of the passenger compartment of the vehicle; the control assembly controls the switch assembly to be in a corresponding switch state according to a cooling instruction or a heating instruction of the vehicle, so that the heat management assembly cools or heats one or more of an intelligent driving system, a battery heat management system, an electric driving system and a passenger cabin of the vehicle, linkage control of the intelligent driving system, the battery heat management system, the passenger cabin and the electric driving system is achieved, and cooling requirements of loops at high temperature and heating requirements of modules and battery packs related to the intelligent driving system at low temperature are met.

Description

Thermal management system and method of vehicle and vehicle
Technical Field
The application relates to the technical field of vehicles, in particular to a thermal management system and method of a vehicle and the vehicle.
Background
At present, an air conditioner refrigerating system and a cooling circulation system are not required to meet the cooling requirements of an intelligent driving system and a battery thermal management system in intelligent driving, relevant parts of the intelligent driving system are required to be free of condensation under different environmental conditions, and the heating performance of a water heating PTC (Positive Temperature Coefficient) and the heating requirements of the intelligent driving system are required to be met by the cooling circulation system performance under a low-Temperature environment.
Content of application
The application provides a thermal management system and method of a vehicle and the vehicle, so that linkage control of an intelligent driving system, a battery thermal management system, a passenger cabin and an electric driving system is achieved, cooling requirements of loops at high temperature are met, and heating requirements of related modules and battery packs of the intelligent driving system at low temperature are guaranteed.
An embodiment of a first aspect of the present application provides a thermal management system for a vehicle, including:
the heat management assembly is respectively connected with an intelligent driving system, a battery heat management system and an electric driving system of the vehicle and a refrigerating circuit or a heating circuit of a passenger compartment;
a switch assembly having a plurality of switch states, each switch state corresponding to a manner of connection between the thermal management assembly and a cooling or heating circuit of a vehicle's smart driving system, battery thermal management system, electric drive system, and passenger compartment; and
a control component that controls the switch component to be in a corresponding switch state according to a cooling instruction or a heating instruction of the vehicle, so that the thermal management component cools or heats one or more of an intelligent driving system of the vehicle, the battery thermal management system, the electric drive system, and the passenger compartment.
Optionally, the thermal management assembly comprises:
the intelligent driving range control system comprises a radiator, a first expansion kettle, a second expansion kettle, an electronic fan, a Pulse Width Modulation (PWM) first water pump, an intelligent driving range controller, an inverter of the intelligent driving range controller, a water heater, a battery pack, a Chiller, a motor controller, an inversion charging module, a compressor, a heating ventilation air conditioner and a PWM second water pump;
the switch assembly includes: the control valve comprises a first three-way valve, an eighth three-way valve, a first electromagnetic valve, a second electromagnetic valve, a first expansion valve and a second expansion valve;
when the switching state is a first switching state, the control assembly controls the conduction state of a first three-way control valve and a second three-way control valve according to the first switching state, so that a cooling loop formed by the radiator, the first expansion pot, the second expansion pot, the electronic fan, the PWM first water pump, an inverter of the intelligent driving area controller, the intelligent driving area controller and the water heater is conducted to cool the intelligent driving system;
when the switch state is a second switch state, the control assembly controls the conduction state of a first three-way control valve and a second three-way control valve according to the second switch state, so that a cooling loop formed by the radiator, the first expansion pot, the second expansion pot, the electronic fan, the PWM first water pump and the battery pack is conducted to cool the battery thermal management system;
when the switch state is a third switch state, the control component controls the conduction states of a fifth three-way valve to an eighth three-way valve according to the third switch state, so that a cooling loop formed by the radiator, the first expansion pot, the electronic fan, the PWM second water pump, the motor controller and the inversion charging module is conducted to cool the electric drive system;
when the switch state is a fourth switch state, the control component controls the second electromagnetic valve and the second expansion valve to be opened and controls the first electromagnetic valve and the first expansion valve to be closed according to the fourth switch state, so that a cooling loop formed by the compressor, the electronic fan and the heating, ventilating and air conditioning is conducted to cool the passenger compartment.
Optionally, wherein,
when the switch state is a fifth switch state, the control assembly controls the conduction state of a first three-way control valve according to the fifth switch state and controls the opening of a first electromagnetic valve and a first expansion valve, so that a cooling loop formed by the second expansion pot, the inverter of the intelligent driving area controller, the water heater, the battery pack, the Chiller, the compressor, the electronic fan and the PWM first water pump is conducted to cool the intelligent driving system and the battery thermal management system.
Optionally, wherein,
when the switch state is a sixth switch state, the control component controls the conduction state of a first three-way control valve according to the sixth switch state, and controls the opening of a first electromagnetic valve, a second electromagnetic valve, a first expansion valve and a second expansion valve, so that a cooling loop formed by the second expansion pot, an inverter of the intelligent driving area controller, the water heater, the battery pack, the Chiller, the heating and ventilation air conditioner, the compressor, the electronic fan and the PWM first water pump is conducted to cool the intelligent driving system, the battery thermal management system and the passenger compartment.
Optionally, wherein,
when the switch state is a seventh switch state, the control component controls the conduction state of a first three-way control valve according to the seventh switch state, and controls the opening of a first electromagnetic valve and a first expansion valve, so that a cooling loop formed by the second expansion pot, the inverter of the intelligent driving domain controller, the water heater, the battery pack, the Chiller, the compressor, the electronic fan, the PWM first water pump, the first expansion pot, the radiator, the inversion charging module, the motor controller, the motor and the PWM second water pump is conducted to cool the intelligent driving system, the battery thermal management system and the electric drive system.
Optionally, wherein,
when the switch state is an eighth switch state, the control component controls the conduction state of a first three-way control valve according to the eighth switch state, controls the PWM first water pump and the PWM second water pump to operate, and opens the first electromagnetic valve, the second electromagnetic valve, the first expansion valve and the second expansion valve so as to enable the second expansion pot, the inverter of the intelligent driving area controller, the water heater, the battery pack, the Chiller, the heating and ventilation air conditioner, the compressor, the electronic fan, the PWM first water pump, the first expansion pot, the radiator, the inversion charging module, the motor controller, the motor and the cooling loop formed by the PWM second water pump to be conducted, and the cooling loop is used for the intelligent driving system and the battery thermal management system, The electric drive system and the passenger compartment are cooled.
Optionally, wherein,
when the switch state is a ninth switch state, the control assembly controls the first three-way control valve and the radiator to be in a closed state according to the ninth switch state, and the second three-way control valve and the battery pack are in a closed state, so that a heating loop formed by the second expansion pot, the Chiller, the PWM first water pump, the inverter of the intelligent driving area controller, the intelligent driving area controller and the water heater is conducted to heat the intelligent driving system.
Optionally, wherein,
when the switch state is the tenth switch state, the control assembly controls the first three-way control valve and the radiator to be in a closed state according to the tenth switch state, and controls the first PWM water pump to be started, so that a heating loop formed by the second expansion kettle, the Chiller, the first PWM water pump, the inverter of the intelligent driving area controller, the water heater and the battery pack is conducted to heat the intelligent driving system and the battery thermal management system. An embodiment of the second aspect of the application provides a vehicle, which comprises the thermal management system of the vehicle.
In a third aspect of the present application, a thermal management method for a vehicle is provided, where the thermal management system for a vehicle is adopted, the method includes the following steps:
receiving a cooling command or a heating command of the vehicle;
controlling the switch assembly to be in a corresponding switch state according to a cooling instruction or a heating instruction of the vehicle, so that the thermal management assembly cools or heats one or more of an intelligent driving system, the battery thermal management system, the electric drive system and the passenger compartment of the vehicle.
Therefore, a cooling instruction or a heating instruction of the vehicle can be received, and the switch component is controlled to be in a corresponding switch state according to the cooling instruction or the heating instruction of the vehicle, so that the thermal management component cools or heats one or more of an intelligent driving system, a battery thermal management system, an electric drive system and a passenger compartment of the vehicle, linkage control of the intelligent driving system, the battery thermal management system, the passenger compartment and the electric drive system is achieved, cooling requirements of all loops at high temperature are met, and heating requirements of relevant modules and battery packs of the intelligent driving system at low temperature are guaranteed.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a block schematic diagram of a thermal management system of a vehicle according to an embodiment of the present application;
FIG. 2 is an exemplary diagram of a vehicle thermal management architecture according to one embodiment of the present application;
FIG. 3 is an exemplary diagram of a smart driving system cooling circuit according to one embodiment of the present application;
FIG. 4 is an exemplary diagram of a battery thermal management system cooling circuit according to one embodiment of the present application;
FIG. 5 is an exemplary illustration of an electric drive system cooling circuit according to an embodiment of the present application;
FIG. 6 is an exemplary diagram of a passenger compartment refrigeration circuit according to one embodiment of the present application;
FIG. 7 is an exemplary diagram of a smart driving system and battery thermal management system cooling circuit according to one embodiment of the present application;
FIG. 8 is an exemplary diagram of a smart driving system, a battery thermal management system, and a passenger compartment cooling circuit according to one embodiment of the present application;
FIG. 9 is an exemplary diagram of a smart driving system, a battery thermal management system, and an electric drive system cooling circuit according to one embodiment of the present application;
FIG. 10 is a diagram of a smart driving system, a battery thermal management system, an electric drive system, and a passenger compartment cooling circuit according to one embodiment of the present application;
FIG. 11 is a flow diagram of a smart driving system heating circuit according to one embodiment of the present application;
FIG. 12 is an exemplary diagram of a PTC heating and heat dissipation balance relationship according to one embodiment of the present application;
FIG. 13 is an exemplary diagram of a smart driving system and battery thermal management system heating circuit according to one embodiment of the present application;
FIG. 14 is a flow chart of a method of cooling a vehicle according to an embodiment of the present application.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application.
The following describes a thermal management system and method for a vehicle and a vehicle according to embodiments of the present application with reference to the drawings.
Before describing the thermal management system of the vehicle according to the embodiment of the present application, the architecture related to smart driving in the related art will be briefly described.
In the related art, a known vehicle temperature management system includes a refrigerant circulation system including a compressor, a condenser, an expansion valve, a heat exchange plate, and a four-way valve, where a refrigerant can exchange heat with a control object through the heat exchange plate, and the four-way valve controls communication of each port, thereby realizing switching between cooling and heating of the control object. When in a heating mode, a high-temperature and high-pressure refrigerant output from the compressor is directly input to an input port of the heat exchange plate; in the cooling mode, the output port of the heat exchange plate is directly communicated with the input port of the compressor, which easily causes the phenomenon that the temperature of the input port and the output port of the cooling plate is uneven in both the heating mode and the cooling mode. According to the invention, by adding two heat exchangers and the pressure reducing device, control threshold values of different temperatures are realized, and the phenomenon of uneven temperature is reduced. However, the temperature management system does not provide linkage control with the battery management system, and different heat exchangers and pressure reduction devices are complex in structure, so that control under different use scenes is more complicated.
The related technology also provides a battery management system and a method for intelligent driving, and the battery management system for intelligent driving is provided to solve the problem that in the existing battery management system, because a plurality of temperature detection modules are generally arranged in a battery pack to detect the temperature of the battery pack, the thermal runaway phenomenon of a certain single battery cell far away from the temperature detection modules cannot be detected in time, and the use of the whole battery can not be ensured. The temperature detection device mainly comprises a temperature detection module and a single body temperature detection unit, wherein the single body temperature detection unit is used for detecting the temperature of a single body battery core and generating single body temperature information. However, the battery management system and method for intelligent driving only relate to a battery thermal management system, and do not relate to the situation of interaction with the intelligent driving system.
The air-conditioning control system comprises an air-conditioning system, an air-conditioning controller, an electric connection between the air-conditioning system and the air-conditioning controller, and a voice control system. The unmanned intelligent driving bus air conditioner control system provided by the invention realizes the function of voice or mobile terminal interaction. And the air conditioner is connected with the battery management system, and when the air conditioner and the battery management system have requirements at the same time, the requirements of air conditioner refrigeration/heating and vehicle battery cooling/heating of the whole vehicle can be met. However, this unmanned intelligent driving bus air conditioning control system involves only the interaction of the air conditioning system with the thermal management system and not the interaction with the thermal management architecture of the intelligent driving system.
The related technology also provides an anti-condensation ring main unit and an anti-condensation method, the anti-condensation ring main unit belongs to the technical field of ring main unit ventilation, and comprises an intelligent isolation and moisture-proof treatment cavity; the intelligent isolation and moisture-proof processing cavity is arranged at the bottom of the ring main unit and is positioned above the cable trench; cables are laid in the cable trench and enter the ring main unit after passing through the intelligent isolation and moisture-proof processing cavity; an air inlet is formed in one side of the intelligent isolation and moisture-proof processing cavity, and a pressure relief window is formed in the other side of the intelligent isolation and moisture-proof processing cavity; the air inlet is connected with an environment adjusting device, and the pressure relief window is provided with a pressure relief valve; the environment adjusting device is installed inside the ring main unit and comprises a temperature and humidity processing device and an air supply device. This device is kept apart and dampproofing process chamber through setting up the intelligence, plays and prevents that the steam of cable pit evaporation from getting into the internal effect of cabinet, reduces the moisture that gets into the internal portion of cabinet from the root to reduce environment adjusting device's work load, effectively reduce the interior air humidity of looped netowrk cabinet, prevent the production of condensation phenomenon. Although it is common to the present application that the temperature control point is above the dew point temperature; the difference is that this application is through setting up temperature and humidity sensor, circulation water route temperature sensor, sensors such as air pressure sensor and gas velocity of flow probe, and utilize the Maggras formula to calculate all temperature humidity intervals that may exist, with dew point feedback to VCU (vessel control unit, Vehicle control unit) under different temperature and humidity, VCU is according to the participation degree of intelligent driving system return circuit temperature and target temperature control cooling water pump and electronic fan, avoid the production of condensation in principle, thereby avoid its injury to electronic components.
Specifically, fig. 1 is a block diagram illustrating a thermal management system of a vehicle according to an embodiment of the present disclosure.
As shown in fig. 1, the thermal management system 1000 of the vehicle includes: thermal management assembly 100, switch assembly 200, and control assembly 300.
The thermal management assembly 100 is respectively connected with an intelligent driving system, a battery thermal management system, an electric driving system and a refrigerating circuit or a heating circuit of a passenger compartment of the vehicle; the switch assembly 200 has a plurality of switch states, each corresponding to a connection between the thermal management assembly 100 and an intelligent driving system, a battery thermal management system, an electric drive system, and a cooling or heating circuit of the passenger compartment of the vehicle; the control assembly 300 controls the switch assembly 200 to a corresponding switch state according to a cooling command or a heating command of the vehicle, such that the thermal management assembly 100 cools or heats one or more of a smart driving system, a battery thermal management system, an electric drive system, and a passenger compartment of the vehicle.
Optionally, in some embodiments, the thermal management assembly 100 comprises: the intelligent driving range control system comprises a radiator, a first expansion kettle, a second expansion kettle, an electronic fan, a Pulse Width Modulation (PWM) first water pump, an intelligent driving range controller, an inverter of the intelligent driving range controller, a water heater, a battery pack, a Chiller, a motor controller, an inverter charging module, a compressor, a heating ventilation air conditioner and a PWM second water pump; the switch assembly 200 includes: the control valve comprises a first three-way valve, an eighth three-way valve, a first electromagnetic valve, a second electromagnetic valve, a first expansion valve and a second expansion valve.
Wherein, as shown in fig. 2, the cooling circuit of the intelligent driving system mainly comprises: the intelligent driving area controller comprises an intelligent driving area controller, an inverter, a water PTC (only participates in circulation), an intelligent driving area controller loop, a PWM first water Pump Pump1, a first expansion pot Tank1, a radiator, an electronic fan, a first three-way valve, a thirteenth through valve, a cooling pipeline and the like. The first three-way control valve and the second three-way control valve are control three-way valves.
The battery thermal management system cooling loop mainly comprises: a BATTERY thermal management system BMS (Battery management System, BMS MANAGEMENT SYSTEM), a PWM first water pump, a radiator, an electronic fan, a first three-way valve to a thirteenth way valve, a cooling pipeline and the like
The cooling loop of the electric drive system mainly comprises a motor, a motor controller, an inverter/charger two-in-one (namely an inverter charging module), a radiator, an electronic fan, a PWM second water Pump Pump2, a second expansion pot Tank2, a cooling pipeline and the like
The passenger compartment refrigeration circuit mainly comprises a compressor, a condenser, an electronic fan, a second expansion valve X2, a second electromagnetic valve V2, an HVAC (heating ventilation and Air Conditioning) system, a refrigeration pipeline and the like.
Therefore, on the basis of the original vehicle type, the following parts are added: the intelligent driving area controller, the inverter, the water heating PTC, 8 three-way valves, 2 three-way control valves, a cooling pipeline connected with the radiator in parallel, a cooling pipeline connected with the Chiller in parallel, a cooling pipeline temperature sensor, a temperature and humidity sensor and the change of the direction of the corresponding cooling pipeline. Wherein, the three-way control valve can realize the function of two-way conversion control. For the early development of intelligent driving systems of various vehicle types, the high cost and the long period brought by integration can be saved. The linkage control of the intelligent driving system loop, the battery thermal management system loop, the passenger compartment refrigeration loop and the electric driving system loop is realized, the cooling requirements of the loops at high temperature are met, and the heating requirements of the related modules and the battery pack of the intelligent driving system at low temperature are also ensured.
To facilitate a person skilled in the art to further understand the thermal management system of the vehicle according to the embodiment of the present application, the following detailed description is provided in conjunction with specific embodiments.
In this embodiment, as shown in fig. 2, the thermal management architecture of the vehicle includes: radiator 1, inversion charging module 2 (i.e. two-in-one inverter/charger), motor controller 3, motor 4, condenser 5, electronic fan 6, first expansion pot (Tank1)7, electric drive loop PWM second water Pump (Pump2)8, intelligent driving range controller loop PWM first water Pump (Pump1)9, inverter 10 of intelligent driving range controller, intelligent driving range controller 11, water heater (water PTC)12, battery pack 13, second expansion pot (Tank2)14, Chiller15, heating ventilation air conditioner 16 (i.e. HVAC), compressor 17, first solenoid valve (V1)18, second solenoid valve (V2)19, first electronic expansion valve (X1)20, second expansion valve (X2)21, first three-way valve, second three-way valve, first three-way control valve (C-way valve), second three-way valve (C-way valve), third three-way valve (T-way valve), fourth three-way valve (C-way valve), fifth three-way valve (T-way valve), sixth three-way valve (T-way valve III), Ninthly, eighth three-way valve r.
Optionally, in some embodiments, when the switching state is the first switching state, the control component 300 controls the conduction states of the first three-way control valve and the second three-way control valve according to the first switching state, so that the cooling loop formed by the radiator, the first expansion pot, the second expansion pot, the electronic fan, the PWM first water pump, the inverter of the intelligent driving range controller, and the water heater is conducted to cool the intelligent driving system.
As shown in FIG. 3, the numerical codes and comments of the components of FIG. 3 are the same as those of FIG. 2. The working condition is suitable for situations such as environment perception of an intelligent driving system, multi-level auxiliary intelligent driving, background big data processing of intelligent driving information and the like.
When the ambient temperature TatmWhen the temperature is higher than or equal to 5 ℃ and lower than or equal to t and lower than 25 ℃, the loop enables the cooling loop of the intelligent driving system to be connected with the radiator by opening the first three-way control valve and the second three-way control valve, and the VCU controls the rotating speed of the PWM first water Pump (Pump1)9 according to the ambient temperature and the temperature of the inverter of the intelligent driving area controller so as to prevent the condensation phenomenon caused by the fact that the temperature of the water path of the loop is lower than the dew point temperature under the conditions of certain temperature and humidity.
VCU detects that intelligent driving area controller dc-to-ac converter water inlet temperature is greater than intelligent driving area controller feedbackAnd when the water inlet target temperature is reached, the cooling circulation of the intelligent driving area controller loop is controlled. VCU ensuring T according to detected temperatureMeasuring＞T0On the premise of (1), the rotating speed of the PWM first water Pump (Pump1)9 is regulated according to the water inlet temperature, the target temperature and the water outlet temperature of the inverter of the intelligent driving area controller, and the opening of the electronic fan 6 is controlled according to the water inlet temperature and the target temperature of the radiator.
It should be noted that, in the embodiment of the present application, a magerlas formula is adopted, and this principle is used to avoid condensation generated by the intelligent driving system, that is, under the condition that the water vapor content in the air is not changed and the air pressure is kept constant, it is ensured that the loop temperature T of the intelligent driving system is higher than the dew point temperature T0. The control method comprises the following steps: the dew point temperature is calculated according to the temperature, humidity and air pressure conditions in different environments, and the VCU controls the temperature of the intelligent driving system loop to be higher than the dew point temperature (T is greater than T0) so as to avoid the condensation phenomenon.
In the following detailed description, the ambient temperature is all TatmThe temperature of the intelligent driving system loop is shown to be TMeasuringThe dew point temperatures are all shown as T0And (4) showing.
Dew point calculation empirical formula (maglas formula):
Figure BDA0003394683100000081
wherein E0-0 ℃ is saturated water vapor pressure, and 6.1078hPa is taken; taking a common coefficient a, and taking 7.69; the coefficient b is used to take 243.92.
Optionally, in some embodiments, when the switch state is the second switch state, the control component 300 controls the conduction states of the first three-way control valve and the second three-way control valve according to the second switch state, so that a cooling loop composed of the radiator, the first expansion pot, the second expansion pot, the electronic fan, the PWM first water pump and the battery pack is conducted to cool the battery thermal management system;
as shown in FIG. 4, the numerical codes and comments of the components of FIG. 4 are the same as those of FIG. 2. The working condition is suitable for the situation that the water temperature of the battery pack is higher than the target set temperature when the battery pack is rapidly charged in a static state.
When the ambient temperature TatmWhen the temperature is higher than or equal to 5 ℃ and lower than or equal to t and lower than 25 ℃, the circuit closes a water path between the first three-way control valve and the Chiller and closes a water path between the second three-way control valve and the intelligent driving area controller, so that a cooling circuit of the battery system is connected with the radiator, and the VCU controls the rotating speed of the PWM first water Pump (Pump1)9 according to the ambient temperature and the detected temperature of the water inlet of the battery. When the VCU detects that the temperature of the water inlet is higher than the target temperature of the water inlet fed back by the BMS, the water cooling circulation of the battery is controlled; the VCU adjusts the rotating speed of the Pump1 according to the temperature of the water inlet of the battery, the target temperature and the temperature of the water outlet, and controls the opening of the electronic fan 6 according to the temperature of the inlet water of the radiator.
Optionally, in some embodiments, when the switching state is the third switching state, the control component 300 controls the conduction states of the fifth to eighth three-way valves according to the third switching state, so that the cooling circuit formed by the radiator, the first expansion pot, the electronic fan, the PWM second water pump, the motor controller and the inverter charging module is conducted to cool the electric drive system;
as shown in FIG. 5, the numerical codes and comments of the components of FIG. 5 are the same as those of FIG. 2. The working condition is suitable for the conditions that the vehicle runs at a constant speed, the cooling condition of the battery pack is not met, and the intelligent driving module does not perform data processing.
When the ambient temperature TatmWhen the battery thermal management system and the intelligent driving system have no cooling requirement (t is more than or equal to 5 ℃ and less than 25 ℃), the loop connects the relevant components of the electric driving system and the radiator through a fifth three-way valve (C), a sixth three-way valve (C), a seventh three-way valve (C) and an eighth three-way valve (C).
And when the VCU detects that the temperature of the water inlet of the two-in-one inverter/charger (namely, the inversion charging module 2) is higher than the target temperature, the cooling circulation of the electric drive system is controlled. The VCU regulates the rotating speed of the PWM second water Pump (Pump2)8 according to the temperature of the inverter/charger two-in-one, the target temperature and the temperature of the motor controller, and controls the opening of the electronic fan 6 according to the water inlet temperature of the radiator.
Alternatively, in some embodiments, when the switching state is the fourth switching state, the control module 300 controls the second solenoid valve and the second expansion valve to be opened and controls the first solenoid valve and the first expansion valve to be closed according to the fourth switching state, so that the cooling circuit formed by the compressor, the electronic fan and the hvac is conducted to cool the passenger compartment.
As shown in FIG. 6, the numerical codes and comments of the components of FIG. 6 are the same as those of FIG. 2. The working condition is suitable for the conditions that the passenger compartment has refrigeration requirements, the cooling condition of the electric drive loop is not met, the cooling condition of the battery pack is not met, and the intelligent driving module does not perform data processing.
When the ambient temperature TatmAt the temperature of (t is more than or equal to 5 ℃ and less than 25 ℃), when partial members have refrigeration requirements, the VCU judges that the whole vehicle meets the air conditioner starting condition according to the whole vehicle condition, sends a signal for allowing the compressor to enable, and sends the compressor power limit according to the whole vehicle power distribution; meanwhile, the air conditioner controller sends a low-speed request of the cooling fan to the VCU, and the VCU drives the electronic fan to run at a low speed; the second solenoid valve (V2)19 and the second expansion valve (X2)21 are opened, and the first solenoid valve (V1)18 and the first electronic expansion valve (X1)20 at the childller are closed. The air conditioner controller collects a medium-pressure signal of the three-state pressure switch, and when the pressure exceeds a certain limit value, a high-speed fan starting request is sent to the VCU, and the VCU drives the electronic fan 6 to run at a high speed.
Optionally, in some embodiments, when the switching state is a fifth switching state, the control component 300 controls the conduction state of the first three-way control valve according to the fifth switching state, and controls the first electromagnetic valve and the first expansion valve to open, so that a cooling loop formed by the second expansion pot, the inverter of the intelligent driving range controller, the intelligent driving range controller and the water heater, the battery pack, the Chiller, the compressor, the electronic fan and the PWM first water pump is conducted to cool the intelligent driving system and the battery thermal management system.
As shown in FIG. 7, the numerical codes and comments of the components of FIG. 7 are the same as those of FIG. 2. This operating mode is applicable to the battery package and fills soon, and the condition when intelligent driving system carries out data processing.
When the ambient temperature Tatm is higher than or equal to 25 ℃, the PWM second water Pump (Pump2)8 of the electric drive system loop is started under the condition that the temperature of the loop is higher than or equal to 45 ℃, and the working temperature of the intelligent driving domain controller inverter is required to be higher than or equal to 25 ℃ and lower than or equal to 45 ℃, at the moment, the first three-way control valve needs to be closed, so that the cooling loops of the intelligent driving system and the battery thermal management system take away heat through a Chiller. The VCU sends cooling request power of an intelligent driving system and a battery management system according to the working condition of the whole vehicle, the air-conditioning control module sends a low-speed fan starting request, the VCU drives an electronic fan to start, and a PWM (pulse width modulation) first water Pump (Pump1)9 operates; simultaneously, the first solenoid valve (V1)18 and the first electronic expansion valve (X1)20 at Chiller are opened.
In addition, the VCU adjusts the rotating speed of the PWM first water Pump (Pump1)9Pump1 or adjusts the rotating speed of the compressor 17 according to the detected temperature, the water inlet temperature and the target temperature of the battery, the water inlet temperature and the target temperature of the intelligent driving domain controller, the water outlet temperature of the battery and the water outlet temperature of the intelligent driving loop on the premise of ensuring that the Tmeasure is greater than T0.
Optionally, in some embodiments, when the switching state is a sixth switching state, the control component 300 controls the conduction state of the first three-way control valve according to the sixth switching state, and controls the first solenoid valve, the second solenoid valve, the first expansion valve and the second expansion valve to be opened, so that the cooling loop formed by the second expansion pot, the inverter of the intelligent driving range controller, the intelligent driving range controller and the water heater, the battery pack, the Chiller, the heating and ventilation air conditioner, the compressor, the electronic fan and the PWM first water pump is conducted to cool the intelligent driving system, the battery thermal management system and the passenger compartment.
As shown in FIG. 8, the numerical codes and comments of the components of FIG. 8 are the same as those of FIG. 2. This operating mode is applicable to the battery package and fills soon, intelligent driving system carries out data processing, and the passenger cabin needs refrigerated condition.
When the ambient temperature TatmThe temperature of a PWM second water Pump (Pump2)8 of the electric drive system loop is higher than or equal to 45 ℃ due to the condition that the temperature of the loop is higher than or equal to 25 ℃, the working temperature of the inverter of the intelligent driving area controller is required to be higher than or equal to 25 ℃ and lower than or equal to 45 ℃, and the first three-way control valve needs to be closed at the moment, so that the intelligent driving system is enabled to be drivenAnd the cooling loop of the battery thermal management system take away heat through a Chiller. When the passenger compartment needs to be cooled at the same time, the VCU sends cooling request power of an intelligent driving system and a battery thermal management system according to the working condition of the whole vehicle, the air-conditioning control module sends a low-speed fan request, the VCU drives the electronic fan 6 to be started, and the PWM first water Pump (Pump1)9 operates; at the same time, the first solenoid valve (V1)18 and the second solenoid valve (V2)19 are opened, the second expansion valve (X2)21 is opened, and the first electronic expansion valve (X1)20 is opened to the maximum opening degree.
In addition, the VCU ensures T based on the sensed temperatureMeasuring＞T0On the premise of (1), the rotating speed of the PWM first water Pump (Pump1)9 or the rotating speed of the compressor 17 is adjusted according to the temperature of the water inlet of the battery and the target temperature, the temperature of the water inlet of the intelligent driving domain controller and the target temperature, the temperature of the water outlet of the battery and the temperature of the water outlet of the intelligent driving loop.
Optionally, in some embodiments, when the switching state is a seventh switching state, the control component 300 controls the conduction state of the first three-way control valve according to the seventh switching state, and controls the first electromagnetic valve and the first expansion valve to open, so that the second expansion pot, the inverter of the intelligent driving range controller, the intelligent driving range controller and the water heater, the battery pack, the Chiller, the compressor, the electronic fan, the PWM first water pump, the first expansion pot, the radiator, the inverter charging module, the motor controller, the motor, and the PWM second water pump are conducted to cool the intelligent driving system, the battery thermal management system, and the electric drive system.
As shown in FIG. 9, the numerical codes and comments of the components of FIG. 9 are the same as those of FIG. 2. This operating mode is applicable to the battery package and fills slowly, the higher condition that needs cooling, and the intelligent driving system need the refrigerated condition of temperature in the battery package.
When the ambient temperature TatmThe temperature of a PWM (pulse width modulation) second water Pump (Pump2)8 of the electric drive system loop is higher than or equal to 25 ℃, the temperature of the loop is higher than or equal to 45 ℃, the working temperature of the inverter of the intelligent driving area controller is required to be higher than or equal to 25 ℃ and lower than or equal to 45 ℃, and at the moment, the first three-way control valve needs to be closed, so that the cooling loops of the intelligent driving system and the battery thermal management system pass through ChiThe ller takes away the heat. When the electric drive system works, the VCU controls the cooling loop of the intelligent driving system, the cooling loop of the battery thermal management system and the loop of the electric drive system to circulate when the VCU detects that the temperature of the water inlet of the battery and the target temperature and the temperature of the water inlet of the intelligent driving area controller and the target temperature are respectively higher than the target temperatures of the water inlets fed back by the battery thermal management system and the intelligent driving area controller.
The VCU sends a low-speed fan request according to cooling request power of an intelligent driving system and a battery thermal management system sent by the working condition of the whole vehicle, the VCU drives the electronic fan 6 to be started, and the intelligent driving domain controller loop PWM first water Pump (Pump1)9 and the electric driving loop PWM second water Pump (Pump2)8 run; and opens the first solenoid valve (V1)18 and the first electronic expansion valve (X1)20 at Chiller.
In addition, the VCU ensures T based on the sensed temperatureMeasuring＞T0On the premise of (1), the rotating speed of the PWM first water Pump (Pump1)9 or the rotating speed of the compressor 17 is adjusted according to the temperature of the water inlet of the battery and the target temperature, the temperature of the water inlet of the intelligent driving domain controller and the target temperature, the temperature of the water outlet of the battery and the temperature of the water outlet of the intelligent driving loop.
The VCU adjusts the rotating speed of the PWM second water Pump (Pump2)8 according to the temperature of the inverter charging module 2 and the target temperature, and adjusts the rotating speed of the electronic fan 6 by combining the cooling requirements of the battery and the intelligent driving area controller.
Optionally, in some embodiments, when the switching state is an eighth switching state, the control component 300 controls the conduction state of the first three-way control valve according to the eighth switching state, controls the PWM first water pump and the PWM second water pump to operate, and turns on the first solenoid valve, the second solenoid valve, the first expansion valve and the second expansion valve, so that the cooling loop formed by the second expansion pot, the inverter of the intelligent driving area controller, the intelligent driving area controller and the water heater, the battery pack, the Chiller, the hvac, the compressor, the electronic fan, the PWM first water pump, the first expansion pot, the radiator, the inverter charging module, the motor controller, the motor, and the PWM second water pump is conducted to cool the intelligent driving system, the battery thermal management system, the electric driving system, and the passenger compartment.
As shown in fig. 10, the numerical codes and comments of the components in fig. 10 are the same as those in fig. 2, and this condition is suitable for the situation that the vehicle runs for a long time in summer, the battery thermal management system, the intelligent driving system and the electric driving system need to be cooled at the same time, and the passenger compartment needs to be cooled.
When the ambient temperature TatmAnd at the temperature (t is more than or equal to 25 ℃), because the starting condition of a PWM (pulse width modulation) second water Pump (Pump2)8 of the electric drive system loop is that the temperature of the loop is more than or equal to 45 ℃, and the working temperature of the inverter of the intelligent driving area controller is required to be (t is more than or equal to 25 ℃) and less than or equal to 45 ℃, the first three-way control valve needs to be closed, so that the cooling loops of the intelligent driving system and the battery thermal management system take away heat through a Chiller. Meanwhile, the VCU sends cooling request power of an intelligent driving system, a battery thermal management system and an electric drive system according to the working condition of the whole vehicle, and the air conditioner control module sends a low-speed fan request; the VCU drives the electric fan 6 to be started, and the intelligent driving area controller loop PWM first water Pump (Pump1)9 and the electric drive loop PWM second water Pump (Pump2)8 run; and opens the first solenoid valve (V1)18, the second solenoid valve (V2)19, the second expansion valve (X2)21, and opens the first electronic expansion valve (X1)20 to the maximum opening degree.
In addition, the VCU ensures T based on the sensed temperatureMeasuring＞T0On the premise of (1), the rotating speeds of a PWM first water Pump (Pump1)9 and a PWM second water Pump (Pump2)8 are adjusted or the rotating speed of a compressor 17 is adjusted according to the water inlet temperature and the target temperature of an intelligent driving area controller, the water inlet temperature and the target temperature of a battery, the water inlet temperature and the target temperature of an inverter/charger two-in-one water inlet, the water outlet temperature of the battery, the water outlet temperature of an intelligent driving loop and the temperature of a motor controller.
Optionally, in some embodiments, when the switching state is a ninth switching state, the control component controls the first three-way control valve and the radiator to be in a closed state according to the ninth switching state, and the second three-way control valve and the battery pack to be in a closed state, so that a heating loop formed by the second expansion pot, the Chiller, the PWM first water pump, the inverter of the intelligent driving area controller, and the water heater is turned on to heat the intelligent driving system.
As shown in fig. 11, the digital codes and comments of the components in fig. 11 are the same as those in fig. 2, and this working condition is suitable for the conditions of intelligent driving system startup in winter in south, environmental awareness, multi-level auxiliary intelligent driving, background big data processing (data transmission, scheduling, storage) of intelligent driving information, and the like.
When the ambient temperature TatmThe temperature is (t is less than 5 ℃), and the intelligent driving area controller inverter needs to be heated to ensure that the working temperature is in the required range (t is more than or equal to 25 ℃ and less than or equal to 45 ℃). At the moment, the water path between the first three-way control valve and the radiator needs to be closed, and the water path between the second three-way control valve and the battery pack needs to be closed, so that the intelligent driving area controller, the inverter, the water PTC and the Chiller are connected, and the Chiller only participates in heating circulation. The VCU sends heating request power of the intelligent driving system according to the ambient temperature, drives the water PTC to start heating, and starts a PWM (pulse width modulation) first water Pump (Pump1)9 of an intelligent driving area controller loop to operate. Meanwhile, the rotating speed of the PWM first water Pump (Pump1)9 is adjusted according to the temperature of the water inlet of the intelligent driving domain controller inverter, the target temperature, the temperature of the PTC water outlet and the temperature of the water outlet of the intelligent driving loop, so that the intelligent driving system loop can be quickly started and works at a proper temperature.
It should be noted that, a heating loop of the intelligent driving area controller is designed according to the PTC working principle (after the PTC thermistor is electrified, the resistance value enters a transition region through self-heating temperature rise, the surface temperature of the constant-temperature heating PTC thermistor keeps a constant value, the temperature is only related to the Curie temperature and the applied voltage of the PTC thermistor, but is not related to the environment temperature basically) and the excellent heat convection characteristic of the cooling liquid.
When the ambient temperature is lower, in order to prevent the condensation from generating in the intelligent driving area controller, the water heating PTC heating principle is utilized, and the water path circulation formed by the intelligent driving area controller, the inverter, the water heating PTC and the intelligent driving area controller loop PWM water Pump1 is utilized for heating and warming, so that the working temperature range is reached. Simultaneously, still need consider the heating demand of battery package, utilize the electrical heating membrane to heat the battery core, just enable the battery core and carry out the charge-discharge in the temperature range of preferred, provide high pressure for intelligent driving area controller dc-to-ac converter on the one hand, provide the electric quantity for the electric appliance is used to the full car on the one hand.
Temperature characteristics of PTC: when the heat dissipation is slow, the power balance point of the heat generation/heat dissipation of the PTC is T1/P1; when heat dissipation is fast, the power balance point of heat generation/heat dissipation of the PTC is T2/P2.
As shown in fig. 12, the power balance point of the PTC to generate and dissipate heat is T4/P3 (when its temperature rises, the heat generating power also drops sharply; when the heat generating power and the heat dissipating power reach a balance, the temperature does not rise any more, and the power does not change any more).
Optionally, in some embodiments, when the switching state is a tenth switching state, the control component controls the first three-way control valve and the radiator to be in a closed state according to the tenth switching state, and controls the PWM first water pump to be turned on, so that a heating loop formed by the second expansion pot, the Chiller, the PWM first water pump, the inverter of the intelligent driving domain controller, the water heater, and the battery pack is turned on to heat the intelligent driving system and the battery thermal management system.
As shown in fig. 13, the digital codes and comments of the components in fig. 13 are the same as those in fig. 2, and this working condition is suitable for the conditions of battery pack charging and discharging requirements in winter in north, intelligent driving system starting, environment sensing, multi-level auxiliary intelligent driving, background big data processing (data transmission, scheduling, storage) of intelligent driving information, and the like.
When the environment temperature is within (t is less than 5 ℃), the intelligent driving domain controller inverter needs to be heated to enable the working temperature to be within the required range (t is more than or equal to 25 ℃ and less than or equal to 45 ℃), the battery pack needs to be heated to exert the charge and discharge performance of the battery core active material, and high voltage is provided for the intelligent driving system domain controller inverter. At the moment, a water path between the first three-way control valve and the radiator needs to be closed, so that the intelligent driving area controller, the inverter and the water PTC are connected with the Chiller; meanwhile, a battery thermal management system loop is connected in parallel with the intelligent driving system loop. In this case, the Chiller only participates in the heating cycle.
The VCU sends heating request power of the intelligent driving system according to the ambient temperature and drives the PTC to start heating; meanwhile, sending a battery heating request power to drive a battery pack heating film to start heating; and the intelligent driving area controller loop PWM first water Pump (Pump1)9 is started to operate.
According to the thermal management system of the vehicle, provided by the embodiment of the application, a cooling instruction or a heating instruction of the vehicle can be received, and the switch assembly is controlled to be in the corresponding switch state according to the cooling instruction or the heating instruction of the vehicle, so that the thermal management assembly cools or heats one or more of an intelligent driving system, a battery thermal management system, an electric drive system and a passenger compartment of the vehicle, and linkage control of the intelligent driving system, the battery thermal management system, the passenger compartment and the electric drive system is realized, cooling requirements of all loops at high temperature are met, and heating requirements of relevant modules and battery packs of the intelligent driving system at low temperature are also guaranteed.
Next, a thermal management method of a vehicle according to an embodiment of the present application will be described with reference to the drawings.
Fig. 14 is a flowchart of a thermal management method of a vehicle according to an embodiment of the present application.
As shown in fig. 14, the thermal management method of the vehicle adopts the thermal management system of the vehicle in the embodiment of fig. 1, and the method includes the following steps:
s1401 receives a cooling command or a heating command of the vehicle.
And S1402, controlling the switch component to be in a corresponding switch state according to a cooling instruction or a heating instruction of the vehicle, so that the thermal management component cools or heats one or more of an intelligent driving system, a battery thermal management system, an electric driving system and a passenger compartment of the vehicle.
It should be noted that the foregoing explanation of the embodiment of the thermal management system of the vehicle also applies to the thermal management method of the vehicle of the embodiment, and details are not repeated here.
According to the vehicle thermal management method provided by the embodiment of the application, a cooling instruction or a heating instruction of the vehicle can be received, and the switch assembly is controlled to be in the corresponding switch state according to the cooling instruction or the heating instruction of the vehicle, so that the thermal management assembly cools or heats one or more of an intelligent driving system, a battery thermal management system, an electric drive system and a passenger compartment of the vehicle, and accordingly linkage control of the intelligent driving system, the battery thermal management system, the passenger compartment and the electric drive system is achieved, cooling requirements of all loops at high temperature are met, and heating requirements of relevant modules and battery packs of the intelligent driving system at low temperature are guaranteed. .
In addition, the embodiment of the application also provides a vehicle, and the vehicle comprises the thermal management system of the vehicle.
According to the vehicle provided by the embodiment of the application, the thermal management system of the vehicle can receive a cooling instruction or a heating instruction of the vehicle, and control the switch assembly to be in the corresponding switch state according to the cooling instruction or the heating instruction of the vehicle, so that the thermal management assembly cools or heats one or more of an intelligent driving system, a battery thermal management system, an electric driving system and a passenger compartment of the vehicle, and linkage control of the intelligent driving system, the battery thermal management system, the passenger compartment and the electric driving system is realized, cooling requirements of loops at high temperature are met, and heating requirements of related modules and battery packs of the intelligent driving system at low temperature are also guaranteed.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer 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 N embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "N" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more N executable instructions for implementing steps of a custom logic function or process, and alternate implementations are included within the scope of the preferred embodiment of the present application in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of implementing the embodiments of the present application.
It should be understood that portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the N steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. If implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.

Claims (10)

1. A thermal management system for a vehicle, comprising:
the heat management assembly is respectively connected with an intelligent driving system, a battery heat management system and an electric driving system of the vehicle and a refrigerating circuit or a heating circuit of a passenger compartment;
a switch assembly having a plurality of switch states, each switch state corresponding to a manner of connection between the thermal management assembly and a cooling or heating circuit of a vehicle's smart driving system, battery thermal management system, electric drive system, and passenger compartment; and
a control component that controls the switch component to be in a corresponding switch state according to a cooling instruction or a heating instruction of the vehicle, so that the thermal management component cools or heats one or more of an intelligent driving system of the vehicle, the battery thermal management system, the electric drive system, and the passenger compartment.
2. The system of claim 1, wherein the thermal management assembly comprises:
the intelligent driving range control system comprises a radiator, a first expansion kettle, a second expansion kettle, an electronic fan, a Pulse Width Modulation (PWM) first water pump, an intelligent driving range controller, an inverter of the intelligent driving range controller, a water heater, a battery pack, a Chiller, a motor controller, an inverter charging module, a compressor, a heating ventilation air conditioner and a PWM second water pump;
the switch assembly includes: the system comprises a first three-way valve, an eighth three-way control valve, a first three-way control valve, a second three-way control valve, a first electromagnetic valve, a second electromagnetic valve, a first expansion valve and a second expansion valve;
when the switching state is a first switching state, the control assembly controls the conduction state of the first three-way control valve and the second three-way control valve according to the first switching state, so that a cooling loop formed by the radiator, the first expansion pot, the second expansion pot, the electronic fan, the PWM first water pump, an inverter of the intelligent driving area controller, the intelligent driving area controller and the water heater is conducted to cool the intelligent driving system;
when the switch state is a second switch state, the control assembly controls the conduction state of the first three-way control valve and the second three-way control valve according to the second switch state, so that a cooling loop formed by the radiator, the first expansion pot, the second expansion pot, the electronic fan, the PWM first water pump and the battery pack is conducted to cool the battery thermal management system;
when the switch state is a third switch state, the control component controls the conduction states of a fifth three-way valve to an eighth three-way valve according to the third switch state, so that a cooling loop formed by the radiator, the first expansion pot, the electronic fan, the PWM second water pump, the motor controller and the inversion charging module is conducted to cool the electric drive system;
when the switch state is a fourth switch state, the control component controls the second electromagnetic valve and the second expansion valve to be opened and controls the first electromagnetic valve and the first expansion valve to be closed according to the fourth switch state, so that a cooling loop formed by the compressor, the electronic fan and the heating, ventilating and air conditioning is conducted to cool the passenger compartment.
3. The system of claim 2, wherein,
when the switch state is a fifth switch state, the control assembly controls the conduction state of a first three-way control valve according to the fifth switch state and controls the opening of a first electromagnetic valve and a first expansion valve, so that a cooling loop formed by the second expansion pot, the inverter of the intelligent driving area controller, the water heater, the battery pack, the Chiller, the compressor, the electronic fan and the PWM first water pump is conducted to cool the intelligent driving system and the battery thermal management system.
4. The system of claim 2, wherein,
when the switch state is a sixth switch state, the control component controls the conduction state of a first three-way control valve according to the sixth switch state, and controls the opening of a first electromagnetic valve, a second electromagnetic valve, a first expansion valve and a second expansion valve, so that a cooling loop formed by the second expansion pot, an inverter of the intelligent driving area controller, the water heater, the battery pack, the Chiller, the heating and ventilation air conditioner, the compressor, the electronic fan and the PWM first water pump is conducted to cool the intelligent driving system, the battery thermal management system and the passenger compartment.
5. The system of claim 2, wherein,
when the switch state is a seventh switch state, the control component controls the conduction state of a first three-way control valve according to the seventh switch state, and controls the opening of a first electromagnetic valve and a first expansion valve, so that a cooling loop formed by the second expansion pot, the inverter of the intelligent driving domain controller, the water heater, the battery pack, the Chiller, the compressor, the electronic fan, the PWM first water pump, the first expansion pot, the radiator, the inversion charging module, the motor controller, the motor and the PWM second water pump is conducted to cool the intelligent driving system, the battery thermal management system and the electric drive system.
6. The system of claim 2, wherein,
when the switch state is an eighth switch state, the control component controls the conduction state of a first three-way control valve according to the eighth switch state, controls the PWM first water pump and the PWM second water pump to operate, and opens the first electromagnetic valve, the second electromagnetic valve, the first expansion valve and the second expansion valve so as to enable the second expansion pot, the inverter of the intelligent driving area controller, the water heater, the battery pack, the Chiller, the heating and ventilation air conditioner, the compressor, the electronic fan, the PWM first water pump, the first expansion pot, the radiator, the inversion charging module, the motor controller, the motor and the cooling loop formed by the PWM second water pump to be conducted, and the cooling loop is used for the intelligent driving system and the battery thermal management system, The electric drive system and the passenger compartment are cooled.
7. The system of claim 2, wherein,
when the switch state is a ninth switch state, the control assembly controls the first three-way control valve and the radiator to be in a closed state according to the ninth switch state, and the second three-way control valve and the battery pack are in a closed state, so that a heating loop formed by the second expansion pot, the Chiller, the PWM first water pump, the inverter of the intelligent driving area controller, the intelligent driving area controller and the water heater is conducted to heat the intelligent driving system.
8. The system of claim 2, wherein,
when the switch state is the tenth switch state, the control assembly controls the first three-way control valve and the radiator to be in a closed state according to the tenth switch state, and controls the first PWM water pump to be started, so that a heating loop formed by the second expansion kettle, the Chiller, the first PWM water pump, the inverter of the intelligent driving area controller, the water heater and the battery pack is conducted to heat the intelligent driving system and the battery thermal management system.
9. A vehicle, characterized by comprising: a thermal management system for a vehicle according to any one of claims 1 to 8.
10. A method of thermal management of a vehicle, characterized in that a thermal management system of a vehicle according to any of claims 1-8 is used, the method comprising the steps of:
receiving a cooling command or a heating command of the vehicle;
controlling the switch assembly to be in a corresponding switch state according to a cooling instruction or a heating instruction of the vehicle, so that the thermal management assembly cools or heats one or more of an intelligent driving system, the battery thermal management system, the electric drive system and the passenger compartment of the vehicle.
CN202111478962.4A 2021-12-06 2021-12-06 Vehicle thermal management system and method and vehicle Active CN114211931B (en)

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