CN113547890A - Thermal management system, thermal management system control method and automobile - Google Patents

Thermal management system, thermal management system control method and automobile Download PDF

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Publication number
CN113547890A
CN113547890A CN202110873924.2A CN202110873924A CN113547890A CN 113547890 A CN113547890 A CN 113547890A CN 202110873924 A CN202110873924 A CN 202110873924A CN 113547890 A CN113547890 A CN 113547890A
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way valve
heating
water
electric drive
water pump
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CN202110873924.2A
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CN113547890B (en
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宋暖
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Deep Blue Automotive Technology Co ltd
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Chongqing Changan New Energy Automobile Technology Co Ltd
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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
    • B60H1/004—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell for vehicles having a combustion engine and electric drive means, e.g. hybrid electric vehicles
    • 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
    • B60H1/02—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant
    • B60H1/03—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant and from a source other than the propulsion plant
    • B60H1/034—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant and from a source other than the propulsion plant from the cooling liquid of the propulsion plant and from an electric heating device
    • 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
    • B60H1/02—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant
    • B60H1/14—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant otherwise than from cooling liquid of the plant, e.g. heat from the grease oil, the brakes, the transmission unit
    • B60H1/143—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant otherwise than from cooling liquid of the plant, e.g. heat from the grease oil, the brakes, the transmission unit the heat being derived from cooling an electric component, e.g. electric motors, electric circuits, fuel cells or 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
    • B60L58/26—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
    • H01M10/65—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
    • H01M10/6569—Fluids undergoing a liquid-gas phase change or transition, e.g. evaporation or condensation
    • 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
    • H01M10/657—Means for temperature control structurally associated with the cells by electric or electromagnetic means
    • H01M10/6571—Resistive heaters
    • 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
    • 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)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Sustainable Energy (AREA)
  • Sustainable Development (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Electromagnetism (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

The invention relates to a thermal management system for a hybrid power and/or range-extended automobile, a control method and the automobile. Various heat sources of the current hybrid electric vehicle and the extended-range vehicle, such as electric drive heat, engine heat and the like, can be flexibly used for heating the passenger compartment and/or the battery pack; and the refrigerant is prevented from entering the passenger compartment when the passenger compartment and/or the battery pack are refrigerated. The system comprises: the cooling system comprises a refrigerant circulation loop and a cooling liquid circulation loop, wherein electric driving cooling and/or cooling or heating of a passenger cabin and/or a battery pack are realized by controlling the opening and closing of a hot air heating PTC in the cooling liquid circulation loop and controlling the flow directions of a first three-way valve, a second three-way valve, a first four-way valve and a second four-way valve.

Description

Thermal management system, thermal management system control method and automobile
Technical Field
The invention relates to an automobile thermal management system, in particular to a thermal management system for a hybrid electric vehicle and/or a range-extended vehicle, a thermal management system control method and a hybrid electric vehicle.
Background
On one hand, the requirements of energy conservation and emission reduction are responded, and new energy automobile technologies such as pure electric vehicles, hybrid electric vehicles, extended-range vehicles and hydrogen fuel cell vehicles are continuously developed. The whole vehicle thermal management is an important constituent unit of the vehicle, and needs to be continuously optimized and changed according to different new energy technologies. On the other hand, the heating energy efficiency ratio of the whole vehicle in a low-temperature environment is low, and the heating power consumption is high, so that a user complains that the driving mileage of the whole vehicle is greatly reduced in the low-temperature environment.
In order to improve the heating energy efficiency ratio and comprehensively utilize energy on the premise of limited vehicle body space and limited energy, a plurality of new technologies such as a heat pump technology, electric driving waste heat utilization, engine heat utilization, passenger compartment waste heat recovery and the like are researched for the whole vehicle heat management. However, each new technology needs to consider heat demands of multiple parties, improve the energy efficiency ratio of the system, and reduce heat management power consumption, which leads to complexity of each new technology system.
After an automobile manufacturer creates an automobile platform with huge cost, in order to meet the requirements of different consumption markets, automobiles with different energy sources, such as pure electric automobiles, hybrid electric automobiles, extended-range automobiles, fuel cell vehicles and the like, can be developed on the platform, so that frequent changes of a thermal management framework are caused. Therefore, it is urgently needed to develop a thermal management system architecture compatible with heating of multiple heat sources.
Disclosure of Invention
The invention provides a thermal management system and a control method for a hybrid power and/or range-extended automobile and the automobile. When the whole vehicle changes energy, the change workload can be effectively reduced. Various heat sources of the current hybrid electric vehicle and the extended-range vehicle, such as electric drive heat, engine heat and the like, can be flexibly used for heating the passenger compartment and/or the battery pack; and the refrigerant is prevented from entering the passenger compartment when the passenger compartment and/or the battery pack are refrigerated.
The technical scheme of the invention is as follows:
the invention provides a thermal management system for a hybrid electric vehicle and/or a range-extended vehicle, comprising: the cooling system comprises a refrigerant circulation loop and a cooling liquid circulation loop, wherein the refrigerant circulation loop and the cooling liquid circulation loop are coupled through a battery cooler giller; the cooling liquid circulation circuit includes:
an engine as a first heat source, an electric drive as a second heat source, a battery pack, a first water bottle, a second water bottle, an electric drive cooling circuit configured to provide cooling to the electric drive, a heat exchange core configured to provide cooling or heating to a passenger compartment of a vehicle, a wind-heating electric heating PTC configured to provide heating to the vehicle; the water inlet end of the first water storage bottle is communicated with the water outlet end of the heat exchange core body; the electrically driven water outlet end is communicated with the water inlet end of the second water storage bottle, and the water outlet end of the second water storage bottle is communicated with the electrically driven water inlet end;
the water inlet end of the first three-way valve is communicated with the water outlet end of the engine, the water outlet end of the cooling liquid of the battery cooler and the water outlet end of the first water storage bottle, and the water outlet end of the first three-way valve is communicated with the water inlet end of the heat exchange core and the water inlet end of the battery pack;
the water inlet end of the first four-way valve is communicated with the water outlet end of the electric drive, and the water outlet end of the first four-way valve is respectively communicated with the water inlet end of the electric drive cooling loop, the water inlet end of the first three-way valve and the water inlet end of the battery pack;
the water inlet end of the second three-way valve is communicated with the water outlet end of the battery pack, and the water outlet end of the second three-way valve is communicated with the electrically-driven water inlet end and the water inlet end of the first water storage bottle;
a water inlet end of the second four-way valve is communicated with a water outlet end of the second three-way valve and a water outlet end of the heat exchange core, and the water outlet end of the second four-way valve is respectively communicated with a water inlet end of the engine, a cooling liquid water inlet end of the battery cooler and the electrically driven water inlet end;
the cooling of the electric drive and/or the cooling or heating of the passenger cabin and/or the battery pack is realized by controlling the opening and closing of the electric heating PTC of the air heater and the flow direction of the first three-way valve, the second three-way valve, the first four-way valve and the second four-way valve.
Preferably, the cooling liquid circulation circuit further includes:
a heating water pump disposed before a water inlet end of the first three-way valve and disposed after a water outlet end of the engine, a water outlet end of the first four-way valve, a water outlet end of the first water storage bottle, and a coolant water outlet end of the battery cooler;
a cooling water pump disposed before the electrically driven water inlet and after the water outlet of the second reservoir bottle, the water outlet of the second four-way valve, the water outlet of the second three-way valve, and the water outlet of the electrically driven cooling circuit.
Preferably, the system further comprises:
the heating inlet water temperature sensor is arranged between the water outlet end of the heating water pump and the water inlet end of the first three-way valve;
the refrigerant heat exchange inlet water temperature sensor is arranged in front of the water inlet end of the second four-way valve and the water inlet end of the first water storage bottle and behind the water outlet end of the heat exchange core and the water outlet end of the second three-way valve;
and the electrically-driven inlet water temperature sensor is arranged between the electrically-driven inlet water end and the outlet water end of the cooling water pump.
Preferably, the refrigerant circulation circuit includes:
the compressor, the condenser and the electronic expansion valve are communicated in sequence; the compressor is communicated with a refrigerant outlet of the battery cooler, and the electronic expansion valve is communicated with a refrigerant inlet of the battery cooler;
the electrically driven cooling circuit includes:
and the low-temperature radiator is coupled with the condenser, the water inlet end of the low-temperature radiator is communicated with the water outlet end of the first four-way valve, and the water outlet end of the low-temperature radiator is communicated with the water inlet end of the cooling water pump.
The invention also provides a thermal management control method for a hybrid electric vehicle and/or a range-extended vehicle, which is applied to the thermal management system for the hybrid electric vehicle, and the method comprises the following steps:
judging whether the vehicle has a cooling or heating demand at present;
when detecting that a user has a cabin heating demand, judging whether an engine is started;
if the engine is started, judging whether the engine can be independently used as a heating source;
if the engine can be independently used as a heating source, the heating water pump is controlled to be started, the first three-way valve is controlled to conduct the heating water pump and the heat exchange core, and the second four-way valve is controlled to conduct the heat exchange core and the engine; if the engine can not be used as a heating source alone, controlling the starting of a heating water pump, controlling the first three-way valve to conduct the heating water pump and the heat exchange core, controlling the second four-way valve to conduct the heat exchange core and the engine, and controlling the starting of the air heating PTC;
if the engine is not started, judging whether the electric drive can be independently used as a heating source or not;
if the electric drive can be independently used as a heating source, a heating water pump and a cooling water pump are controlled to be started, the first four-way valve is controlled to conduct the electric drive and the heating water pump, the first three-way valve is controlled to conduct the heating water pump and the heat exchange core, and the second four-way valve is controlled to conduct the heat exchange core and the cooling water pump;
if the situation that the electric drive cannot be used as a heating source independently is determined, a heating water pump and a cooling water pump are controlled to be started, the first four-way valve is controlled to conduct the electric drive and the heating water pump, the first three-way valve is controlled to conduct the heating water pump and the heat exchange core, the second four-way valve is controlled to conduct the heat exchange core and the cooling water pump, and a wind heating electric heating PTC is controlled to be started;
if the engine is not started and the electric drive can not be used as a heating source, the heating water pump is controlled to be started, the first three-way valve is controlled to conduct the heating water pump and the heat exchange core body, and the air heating PTC is controlled to be started.
Preferably, the method further comprises:
if it is detected that the battery pack has a heating demand while the user has a cabin heating demand,
when the engine can be determined to be used as a heating source or can not be used as a heating source independently, the first three-way valve is also controlled to conduct the heating water pump and the battery pack, and the second three-way valve is controlled to conduct the battery pack and the second four-way valve; alternatively, the first and second electrodes may be,
and when the electric drive energy or the electric drive energy cannot be independently used as a heating source, the first three-way valve is also controlled to conduct the heating water pump and the battery pack, and the second three-way valve is controlled to conduct the battery pack and the second four-way valve, and/or the battery pack and the cooling water pump.
Preferably, the method further comprises:
when only the battery pack is detected to have the heating requirement, judging whether the engine is started;
if the engine is started, judging whether the engine can be independently used as a heating source;
if the engine can be independently used as a heating source, the heating water pump is controlled to be started, the first three-way valve is controlled to conduct the heating water pump and the battery pack, and the second four-way valve is controlled to conduct the battery pack and the engine; if the engine can not be used as a heating source alone, controlling the starting of a heating water pump, controlling the first three-way valve to conduct the heating water pump and a battery pack, controlling the second four-way valve to conduct the battery pack and the engine, and controlling the starting of the air heating PTC;
if the engine is not started, judging whether the electric drive can be used as a heating source;
and if the electric drive energy is determined to be used as a heating source, controlling a heating water pump and a cooling water pump to be started, controlling the first four-way valve to conduct the electric drive and the heating water pump, controlling the first three-way valve to conduct the heating water pump and a battery pack, controlling the second three-way valve to conduct the battery pack and the cooling water pump independently, or controlling the second three-way valve and the second four-way valve to conduct the battery pack and the cooling water pump together.
Preferably, the specific conditions under which the engine alone can be used as a heating source are:
the heating water inlet temperature T1 detected by a heating water inlet temperature sensor arranged between the water outlet end of the heating water pump and the water inlet end of the first three-way valve is greater than or equal to a first preset temperature T1;
the specific conditions under which the electric drive can be used as a heating source are:
the electric drive temperature T2 is greater than or equal to a second preset temperature T2, the electric drive inlet water temperature T3 detected by an electric drive inlet water temperature sensor arranged between the water outlet end of the cooling water pump and the electric drive inlet water end is greater than or equal to a third preset temperature T3, and the current environment temperature T4 of the vehicle is less than or equal to a fourth preset temperature T4;
the specific conditions under which the electric drive can be used alone as a heating source are:
the electric driving temperature T2 is greater than or equal to the second preset temperature T2, the electric driving inlet water temperature T3 detected by an electric driving inlet water temperature sensor disposed between the water outlet end of the cooling water pump and the electric driving inlet water end is greater than or equal to the third preset temperature T3, the current ambient temperature T4 of the vehicle is less than or equal to the fourth preset temperature T4, and the heating inlet water temperature T1 detected by a heating inlet water temperature sensor is greater than or equal to the first preset temperature T1.
Preferably, the method further comprises:
when detecting that only a user has a cabin cooling demand, controlling a heating water pump to start, controlling a compressor to start, controlling a first three-way valve to conduct the heating water pump and a heat exchange core, and controlling a second four-way valve to conduct the heat exchange core and a cooling liquid water inlet end of a battery cooler;
when only the battery pack is detected to have a cooling requirement, the heating water pump is controlled to be started, the compressor is controlled to be started, the first three-way valve is controlled to conduct the battery pack and the heat exchange core body, and the second four-way valve is controlled to conduct the battery pack and a cooling liquid water inlet end of the battery cooler;
when detecting that the user has cabin cooling demand and battery package and has the cooling demand, then control the heating water pump and start, the control compressor starts, control first three-way valve switches on heating water pump and heat transfer core, control second four-way valve switches on the coolant liquid income water end of heat transfer core and battery cooler galler, control first three-way valve switches on battery package and heat transfer core, control second four-way valve switches on the coolant liquid income water end of battery package and battery cooler galler.
Preferably, the method further comprises:
and when the electric drive has a cooling demand, controlling the cooling water pump and the compressor to start, and controlling the first four-way valve to conduct the low-temperature radiator and the electric drive.
The invention also provides an automobile comprising the thermal management system for the extended-range automobile.
The invention has the beneficial effects that:
various heat sources of the current hybrid electric vehicle and extended range vehicle, such as electric drive heat, engine heat and the like, are flexibly used for heating a passenger compartment and/or a battery pack; and the refrigerant is prevented from entering the passenger compartment when the passenger compartment and/or the battery pack are refrigerated.
Drawings
FIG. 1 is a schematic diagram of the overall architecture of the thermal management system of the present invention;
FIG. 2 is a schematic diagram of a thermal management system utilizing engine heating in an embodiment of the present invention;
FIG. 3 is a schematic diagram of a thermal management system utilizing electrically driven heating in an embodiment of the present invention;
FIG. 4 is a schematic view of a heat management system for electrically heating PTC heating by using wind heat according to an embodiment of the present invention;
FIG. 5 is a schematic view of the cooling of the passenger compartment and the battery pack simultaneously in an embodiment of the invention;
FIG. 6 is a schematic diagram of cooling an electric drive in an embodiment of the present invention;
FIG. 7 is a schematic flow chart illustrating heating of a passenger cabin according to an embodiment of the present invention;
fig. 8 is a schematic flow chart illustrating heating of a battery pack according to an embodiment of the present invention;
fig. 9 is a schematic flow chart of the refrigeration process in the embodiment of the invention.
Detailed Description
The invention will be described in detail below with reference to the system schematic shown in the drawing. The modifications of the valve structure (the three-way valve is changed into a four-way valve or a five-way valve), the increase and decrease of the parts, the combination of the heat sources (such as the heat pump heating and the PTC heating at the same time, and the engine 22 and the PTC heating at the same time) and the like made by those skilled in the art according to the embodiments are included in the scope of the present invention.
As shown in fig. 1, the embodiment of the present invention provides a thermal management system for a hybrid vehicle and/or an extended range vehicle, which is compatible with various heat sources (such as an engine 22, an electric drive 25 and a warm-air electric heating PTC 19) when heating a passenger compartment and/or a battery pack 17, and can select a suitable heat source to heat the passenger compartment and/or the battery pack 17 based on actual conditions; when refrigerating the passenger compartment and/or the battery pack 17, the refrigerant in the refrigerant circulation loop can be ensured not to enter the passenger compartment, and the health of personnel is ensured. In addition, the thermal management system in this embodiment may also provide cooling to the electric drive 25 based on actual demand.
Referring to fig. 1, the thermal management system in this embodiment specifically includes a coolant circulation loop and a coolant circulation loop, where the coolant circulation loop and the coolant circulation loop are coupled through a battery cooler chiller14, and when the coolant circulation loop is started, a coolant exchanges heat with coolant in the coolant circulation loop in a battery cooler chiller14, so as to cool the coolant.
Referring to fig. 1, in the present embodiment, the cooling circulation circuit includes: a compressor 11, a condenser 12 and an electronic expansion valve 13. A refrigerant outlet of the electronic expansion valve 13 is connected to a refrigerant inlet of the battery cooler chiller14, and a refrigerant inlet of the compressor 11 is connected to a refrigerant outlet of the battery cooler chiller 14. When the refrigerant circulation loop works, the compressor 11 sucks low-pressure low-temperature gaseous refrigerant from the Chiller14, discharges high-temperature high-pressure gaseous refrigerant, exchanges heat with air through the condenser 12, throttles the refrigerant from a high-pressure liquid state to a low-pressure two-phase state through the electronic expansion valve 13, absorbs heat of the cooling liquid circulation loop through the battery cooler Chiller14, and changes the heat into low-temperature low-pressure gas which is circulated to the compressor 11.
The coolant circulation circuit may be controlled by various valves provided in the present embodiment to form a plurality of hot coolant circuits or cold coolant circuits for cooling or heating the passenger compartment and/or the battery pack 17 and for cooling the electric drive 25.
Referring to fig. 1, in the present embodiment, the cooling liquid circulation loop specifically includes: an engine 22 as a first heat source, an electric drive 25 as a second heat source, a battery pack 17, a first reservoir bottle 23, a second reservoir bottle 27, an electric drive cooling circuit configured to provide cooling to the electric drive 25, a heat exchange core 18 configured to provide cooling or heating to a passenger compartment of a vehicle, a wind-heating electric heating PTC19 configured to provide heating to a vehicle; the water inlet end of the first water storage bottle 23 is communicated with the water outlet end of the heat exchange core body 18; the water outlet end of the electric drive 25 is communicated with the water inlet end of the second water storage bottle 27, and the water outlet end of the second water storage bottle 27 is communicated with the water inlet end of the electric drive 25; a first three-way valve 16, wherein a water inlet end of the first three-way valve 16 is communicated with a water outlet end of the engine 22, a water outlet end of the cooling liquid of the battery cooler chiller14 and a water outlet end of the first water storage bottle 23, and a water outlet end of the first three-way valve 16 is communicated with a water inlet end of the heat exchange core 18 and a water inlet end of the battery pack 17; a first four-way valve 24, wherein a water inlet end of the first four-way valve 24 is communicated with a water outlet end of the electric drive 25, and a water outlet end of the first four-way valve 24 is respectively communicated with a water inlet end of the electric drive cooling loop, a water inlet end of the first three-way valve 16 and a water inlet end of the battery pack 17; a water inlet end of the second three-way valve 20 is communicated with a water outlet end of the battery pack 17, and a water outlet end of the second three-way valve 20 is communicated with a water inlet end of the electric drive 25 and a water inlet end of the first water storage bottle 23; a second four-way valve 21, wherein a water inlet end of the second four-way valve 21 is communicated with a water outlet end of the second three-way valve 20 and a water outlet end of the heat exchange core 18, and a water outlet end of the second four-way valve 21 is respectively communicated with a water inlet end of the engine 22, a coolant water inlet end of the battery cooler chiller14 and a water inlet end of the electric drive 25; a heating water pump 15 disposed before the water inlet end of the first three-way valve 16 and after the water outlet end of the engine 22, the water outlet end of the first four-way valve 24, the water outlet end of the first water storage bottle 23, and the coolant water outlet end of the battery cooler chiller 14; a cooling water pump 26 arranged before the water inlet end of the electric drive 25 and after the water outlet end of the second water bottle 27, the water outlet end of the second four-way valve 21, the water outlet end of the second three-way valve 20 and the water outlet end of the electric drive cooling circuit.
The cooling of the electric drive 25 and/or the cooling or heating of the passenger compartment and/or the battery pack 17 is achieved by controlling the opening and closing of the air heating PTC19 and the flow direction of the first three-way valve 16, the second three-way valve 20, the first four-way valve 24, and the second four-way valve 21.
Referring to fig. 1, in the present embodiment, an electrically-driven cooling circuit includes: and a low-temperature radiator 28 coupled with the condenser 12, wherein a water inlet end of the low-temperature radiator 28 is communicated with a water outlet end of the first four-way valve 24, and a water outlet end of the low-temperature radiator 28 is communicated with a water inlet end of the cooling water pump 26. When the refrigerant circulation circuit is operated, the condenser 12 exchanges heat with the low-temperature radiator 28 to cool the electric drive 25.
Certainly, in order to implement the thermal management control on the thermal management system in this embodiment, the system in this embodiment further includes: a heating intake water temperature sensor arranged between the water outlet end of the heating water pump 15 and the water inlet end of the first three-way valve 16; a refrigerant heat exchange inlet water temperature sensor arranged in front of the water inlet end of the second four-way valve 21 and the water inlet end of the first water storage bottle and behind the water outlet end of the heat exchange core 18 and the water outlet end of the second three-way valve 20; and an electric drive 25 inlet water temperature sensor arranged between the water inlet end of the electric drive 25 and the water outlet end of the cooling water pump 26.
When the thermal management control is performed, based on a specific working state, the temperature signals collected by the sensors need to be selectively adopted to perform condition judgment so as to perform the thermal management control. In addition, in performing the thermal management control, it is also necessary to use an ambient temperature signal in which the vehicle is currently located, and an electric drive 25 temperature sensor signal that detects the temperature of the electric drive 25.
Referring to fig. 7 to 9, in the embodiment of the present invention, when the thermal management system is used for performing thermal management control, the following steps need to be specifically performed.
And step S101, judging whether the vehicle has a cooling or heating requirement.
At this time, the cooling demand of the vehicle may be: any one or more of the requirements for passenger compartment refrigeration, battery pack 17 refrigeration, electric drive 25 refrigeration. For example, the refrigeration requirements of the vehicle may be: passenger compartment refrigeration and battery pack 17 refrigeration requirements, passenger compartment refrigeration and electric drive 25 refrigeration requirements, electric drive 25 refrigeration requirements and battery pack 17 refrigeration requirements, and the three aforementioned requirements.
The heating requirement of the vehicle may be: passenger compartment heating and/or battery pack 17 heating requirements.
The heating or cooling demand of the battery pack 17 is determined by a battery heating or cooling demand signal sent by a battery manager. The cooling demand of the electric drive 25 is judged by the temperature sensed by the temperature sensor of the electric drive 25 and the ambient temperature of the vehicle. The passenger compartment cooling or heating requirements are actively made by the user.
Step S102, when detecting that the user has the cabin heating demand, judging whether the engine 22 is started.
When the engine 22 is started, the engine 22 is preferentially employed as a heating source.
In step S103, if the engine 22 is started, it is determined whether the engine 22 alone can be used as a heating source.
The specific conditions under which the engine 22 can be used alone as a heating source are as follows: the heating intake water temperature T1 detected by the heating intake water temperature sensor disposed between the water outlet end of the heating water pump 15 and the water inlet end of the first three-way valve 16 is greater than or equal to a first preset temperature T1.
And step S104, when the engine 22 is determined to be capable of being used as a heating source alone, controlling the heating water pump 15 to be started, controlling the first three-way valve 16 to conduct the heating water pump 15 and the heat exchange core 18, and controlling the second four-way valve 21 to conduct the heat exchange core 18 and the engine 22.
Specifically, referring to fig. 2, in this step, after the coolant is heated by the engine 22, the coolant is pushed by the heating water pump 15, and the hot coolant flows from the inlet 161 to the outlet 162 of the first three-way valve 16, and then enters the heat exchange core 18 to exchange heat with air, so as to heat the passenger compartment.
And step S105, when the engine 22 cannot be used as a heating source alone, controlling the heating water pump 15 to be started, controlling the first three-way valve 16 to conduct the heating water pump 15 and the heat exchange core 18, controlling the second four-way valve 21 to conduct the heat exchange core 18 and the engine 22, and controlling the air heating PTC19 to be started.
In the present embodiment, in conjunction with fig. 2 and 4, the operating power of the air-heating PTC19 can be determined based on the temperature collected by the heating inlet water temperature sensor. For example, based on the gradient of the temperature of the heating inlet water collected by the heating inlet water temperature sensor, the proper heating power of the air heating electric heating PTC19 is selected.
In step S106, if the engine 22 is not started, it is determined whether the electric drive 25 can be used as a heating source.
The specific conditions under which the electric drive 25 can serve as a heating source are: the temperature T2 of the electric drive 25 is greater than or equal to the second preset temperature T2, the temperature T3 of the electric drive inlet water detected by an electric drive inlet water temperature sensor arranged between the water outlet end of the cooling water pump 26 and the water inlet end of the electric drive 25 is greater than or equal to the third preset temperature T3 and the current ambient temperature T4 of the vehicle is less than or equal to the fourth preset temperature T4.
The specific conditions of whether the electric drive 25 can be used as a heating source independently are as follows: the temperature T2 of the electric drive 25 is greater than or equal to the second preset temperature T2, the temperature T3 of the electric drive intake water detected by an electric drive intake water temperature sensor disposed between the water outlet end of the cooling water pump 26 and the water inlet end of the electric drive 25 is greater than or equal to the third preset temperature T3, the current ambient temperature T4 of the vehicle is less than or equal to the fourth preset temperature T4, and the temperature T1 of the heating intake water detected by a heating intake water temperature sensor is greater than or equal to the first preset temperature T1.
Step S107, if it is determined that the electric drive 25 can be used as a heating source alone, controlling the heating water pump 15 and the cooling water pump 26 to be started, controlling the first four-way valve 24 to conduct the electric drive 25 and the heating water pump 15, controlling the first three-way valve 16 to conduct the heating water pump 15 and the heat exchange core 18, and controlling the second four-way valve 21 to conduct the heat exchange core 18 and the cooling water pump 26.
Referring to fig. 3, in this step, after being heated by the electric drive 25, the coolant flows out from the inlet 241 through the outlet 243 via the first four-way valve 24, is pushed by the heating water pump 15, flows out from the inlet 161 through the outlet 162 via the first three-way valve 16, and flows through the heat exchange core 18, so as to heat the passenger compartment. Thereafter, the coolant flows from the inlet 211 of the second four-way valve 21 back to the cooling water pump 26 via the outlet 214, and the cooling water pump 26 pumps the medium back to the electric drive 25, resulting in heating by the electric drive 25.
Step S108, if it is determined that the electric drive 25 cannot be used as a heating source alone, controlling the heating water pump 15 and the cooling water pump 26 to be started, controlling the first four-way valve 24 to conduct the electric drive 25 and the heating water pump 15, controlling the first three-way valve 16 to conduct the heating water pump 15 and the battery pack 17, controlling the second three-way valve 20 to conduct the battery pack 17 and the cooling water pump 26 alone, or controlling the second three-way valve 20 and the second four-way valve 21 to conduct the battery pack 17 and the cooling water pump 26 together, and controlling the air heating PTC19 to be started.
Referring to fig. 3 and 4, the flow direction of the cooling liquid in this step is the same as that in step S107. At this time, the power control of the air-warming electric heating PTC19 is matched with the control conditions in step S106.
Step S109, if the engine 22 is not started and the electric drive 25 cannot be used as a heating source, the heating water pump 15 is controlled to be started, the first three-way valve 16 is controlled to conduct the heating water pump 15 and the heat exchange core 18, and the air heating PTC19 is controlled to be started.
At this time, the power control of the air-warming electric heating PTC19 coincides with the control condition in step S106.
In the above steps S104 to S109, when the engine 22, the air-warming PTC, or the electric drive 25 is used as a heating source, the refrigerant circulation circuit is not started. In addition, control of these valves, which are not mentioned in the above steps, indicates that the valves are in the closed state.
In the above steps S102 to S109, the specific operation state when only the user has the cabin heating requirement is described. Referring to fig. 8, when it is detected that there is only a heating demand of the battery pack 17, the following steps are performed in the present embodiment:
step S110, when it is detected that only the battery pack 17 has a heating demand, determining whether the engine 22 is started;
step S111, if the engine 22 is started, judging whether the engine 22 can be used as a heating source alone;
step S112, if the engine 22 can be used as a heating source alone, controlling the heating water pump 15 to start, controlling the first three-way valve 16 to conduct the heating water pump 15 and the battery pack 17, and controlling the second four-way valve 21 to conduct the battery pack 17 and the engine 22.
Specifically, referring to fig. 2, in this step, the coolant is heated by the engine 22 and then pushed by the heating water pump 15, and the hot coolant flows from the inlet 161 to the outlet 163 of the first three-way valve 16 and then enters the battery pack 17 to be cooled, so that the battery pack 17 is heated.
In step S113, if the engine 22 cannot be used as a heating source alone, the heating water pump 15 is controlled to start, the first three-way valve 16 is controlled to conduct the heating water pump 15 and the battery pack 17, the second four-way valve 21 is controlled to conduct the battery pack 17 and the engine 22, and the air heating PTC19 is controlled to start.
In step S114, if the engine 22 is not started, it is determined whether the electric drive 25 can be used as a heating source.
Step S115, if it is determined that the electric drive 25 can be used as a heating source, controlling the heating water pump 15 and the cooling water pump 26 to start, controlling the first four-way valve 24 to conduct the electric drive 25 and the heating water pump 15, controlling the first three-way valve 16 to conduct the heating water pump 15 and the battery pack 17, controlling the second three-way valve 20 to conduct the battery pack 17 and the cooling water pump 26 alone, or controlling the second three-way valve 20 and the second four-way valve 21 to conduct the battery pack 17 and the cooling water pump 26 together.
Referring to fig. 3, in this step, after being heated by the electric drive 25, the coolant flows out from the inlet 241 through the outlet 243 via the first four-way valve 24, is pushed by the heating water pump 15, flows out from the inlet 161 through the outlet 163 via the first three-way valve 16, and flows through the battery pack 17, so that the battery pack 17 is heated. Thereafter, the coolant flows from the inlet 201 to 202 of the second three-way valve 20 and then from the inlet 211 of the second four-way valve 21 to the cooling water pump 26 via the outlet 214, or the coolant flows directly from the inlet 201 to 203 of the second three-way valve 20 and the cooling water pump 26 pumps the medium back to the electric drive 25, resulting in heating by the electric drive 25.
In steps S110 to S115, the conditions for determining whether the engine 22 alone can be used as a heating source, whether the electric drive 25 can be used as a heating source, and whether the electric drive 25 can be used as a heating source alone are the same as the conditions described in steps S103 to S106, and the power control of the PTC19 for electric air heating is the same as the control principle in step S106.
In this embodiment, if it is detected that the user has a cabin heating requirement and the battery pack 17 has a heating requirement, the following steps are also performed in the process of simultaneously performing steps S102 to S109 and steps S110 to S115.
In step S116, when it is determined that the engine 22 alone can or cannot be used as a heating source, the first three-way valve 16 is also controlled to conduct the heating water pump 15 and the battery pack 17 and the second three-way valve 20 is also controlled to conduct the battery pack 17 and the second four-way valve 21.
At this time, when the engine 22 is operated for heating, the heating liquid is heated by the engine 22 and then pushed by the heating water pump 15, flows out from the outlets 162 and 163 through the first three-way valve 16, is distributed in different proportions from the inlet 161, flows through the heat exchange core 18 and the battery pack 17, respectively, flows through the loop three-way valves 201 to 202, flows through the second four-way valve 21, flows into the inlet 211, flows out through the outlet 212, and flows back to the engine 22, thereby forming a heating loop of the engine 22.
The step S1 the battery pack 17, when it is determined that the electric drive 25 alone can or cannot be used as a heating source, further controls the first three-way valve 16 to conduct the heating water pump 15 and the battery pack 17, and controls the second three-way valve 20 to conduct the battery pack 17 and the second four-way valve 21, and/or, conducts the battery pack 17 and the cooling water pump 26.
At this time, when the electric drive 25 is used for heating, after the heating liquid is heated by the electric drive 25, the heating liquid flows out from the inlet 241 through the outlet 243 through the first four-way valve 24, is pushed by the heating water pump 15, flows out from the outlets 162 and 163 through the first three-way valve 16 in different proportions, flows through the heat exchange core 18 and the battery pack 17 respectively, conducts the second three-way valves 20201 to 202 (or conducts 203 and 202 simultaneously), flows through the second three-way valve 21, flows in from the inlet 211 through the outlet 214 and flows back to the cooling water pump 26 (the cooling liquid flowing out from the battery pack 17 can also directly flow back to the cooling water pump 26 through the second three-way valve 2020), and pumps the medium back to the electric drive 25, thereby forming the heating loop of the electric drive 25.
The above steps, namely, heating of the passenger compartment and/or the battery pack 17 by the engine 22, the electric drive 25 and the air-warming electric heating PTC19 are realized. Referring to fig. 8, 5 and 6, specific steps of the vehicle having a cooling requirement will be described next, wherein the refrigerant circulation circuit in the present embodiment enters an operating state when cooling is performed.
Step S118, when it is detected that only the user has a cabin cooling demand, the heating water pump 15 is controlled to start, the compressor 11 is controlled to start, the first three-way valve 16 is controlled to conduct the heating water pump 15 and the heat exchange core 18, and the second four-way valve 21 is controlled to conduct the heat exchange core 18 and the cooling liquid inlet end of the battery cooler chiller 14.
Referring to fig. 5, in this scenario, the refrigerant in the refrigerant circulation loop exchanges heat with the coolant at the battery cooler chiller14, so that the coolant in the coolant circulation loop is cooled, and then flows into the heat exchange core 18 through the outlet 162 of the first three-way valve 16, and exchanges heat with the air again at the heat exchange core 18, thereby cooling the passenger compartment.
Step S119, when it is detected that only the battery pack 17 has a cooling demand, controlling the heating water pump 15 to start, controlling the compressor 11 to start, controlling the first three-way valve 16 to conduct the battery pack 17 and the heat exchange core 18, and controlling the second four-way valve 21 to conduct the battery pack 17 and the cooling liquid inlet end of the battery cooler chiller 14.
Referring to fig. 5, in this scenario, the coolant in the coolant circulation circuit exchanges heat with the coolant at the battery cooler chiller14 to cool the coolant in the coolant circulation circuit, flows into the battery pack 17 through the outlet 163 of the first three-way valve 16, cools the battery pack 17 at the battery pack 17, and returns to the battery cooler chiller14 through the outlet 202 of the second three-way valve 20 and the outlet 213 of the second four-way valve 21.
Step S120, when it is detected that the user has a cabin cooling demand and the battery pack 17 has a cooling demand, controlling the heating water pump 15 to start, controlling the compressor 11 to start, controlling the first three-way valve 16 to conduct the heating water pump 15 and the heat exchange core 18, controlling the second four-way valve 21 to conduct the heat exchange core 18 and the cooling liquid water inlet end of the battery cooler chiller14, controlling the first three-way valve 16 to conduct the battery pack 17 and the heat exchange core 18, and controlling the second four-way valve 21 to conduct the cooling liquid water inlet end of the battery pack 17 and the cooling liquid water inlet end of the battery cooler chiller 14.
Referring to fig. 5, in this scenario, the refrigerant in the refrigerant circulation loop exchanges heat with the coolant at the battery cooler chiller14, so that the coolant in the coolant circulation loop is cooled, and then flows into the battery pack 17 through the outlet 163 of the first three-way valve 16 and flows into the heat exchange core 18 through the outlet 162, cools the battery pack 17 at the battery pack 17, exchanges heat with air again at the heat exchange core 18 to cool the passenger compartment, and then returns to the battery cooler chiller14 through the outlet 202 of the second three-way valve 20 and the outlet 213 of the second four-way valve 21.
And step 121, when the electric drive 25 is detected to have a cooling demand, controlling the cooling water pump 26 and the compressor 11 to start, and controlling the first four-way valve 24 to conduct the low-temperature radiator 28 and the electric drive 25.
Referring to fig. 6, in this scenario, the refrigerant in the refrigerant circulation loop exchanges heat with the low temperature radiator 28 at the condenser 12, and the cooled coolant is pumped into the electric drive 25 through the cooling water pump 26, cools the electric drive 25, and flows into the low temperature radiator 28 through the outlet 242 of the first three-way valve 16.
The heat management system structure compatible with multi-source heating comprises a compressor 11, a condenser 12, an electronic expansion valve 13, a battery cooler smiler 14, a heating water pump 15, a heating tee joint 16, a battery pack 17, a heat exchange core 18, a wind heating electric heating PTC19, a loop three-way valve 20, an air conditioner one-inlet three-outlet valve 21, an engine 22, a water storage bottle 23, a cooling one-inlet three-outlet valve 24, an electric drive 25, a cooling water pump 26, a water storage bottle 27 and a low-temperature radiator 28.
Referring to fig. 1, in the present embodiment, the refrigerant heat exchange inlet water temperature sensor is arranged to control the power of the compressor 11, and the working power of the compressor 11 is selectively adjusted based on the gradient of the refrigerant heat exchange inlet water temperature.
By the method and the system, the passenger compartment and/or the battery pack 17 can be heated by flexibly using various heat sources of the current hybrid electric vehicle and the extended-range vehicle, such as electric drive 25 heat, engine 22 heat and the like; and the cooling medium can be prevented from entering the passenger compartment when the passenger compartment and/or the battery pack 17 is cooled.
The heat source of the heat management system structure in the embodiment of the invention is compatible with the engine 22, the electric drive 25 heat and the air heating electric heating PTC19, when the whole vehicle is changed from a hybrid vehicle or a range-extended vehicle to a pure electric vehicle, only the corresponding heat source part needs to be changed, and other parts of the structure do not need to be changed. The invention not only realizes the energy saving of heating, but also greatly reduces the workload of engineer scheme change and verification. The invention can also add PTC for water heating in the heating loop.
The invention also provides a vehicle comprising the heat management system, wherein the vehicle can be a hybrid vehicle and/or an extended-range vehicle.

Claims (11)

1. A thermal management system for a hybrid vehicle and/or an extended range vehicle, comprising: the cooling system comprises a cooling medium circulation loop and a cooling liquid circulation loop, wherein the cooling medium circulation loop and the cooling liquid circulation loop are coupled through a battery cooler (14); the cooling liquid circulation circuit includes:
an engine (22) as a first heat source, an electric drive (25) as a second heat source, a battery pack (17), a first water storage bottle (23), a second water storage bottle (27), an electric drive cooling circuit configured to provide cooling to the electric drive (25), a heat exchange core (18) configured to provide cooling or heating to a passenger compartment of a vehicle, a wind-heating PTC (19) configured to provide heating to the passenger compartment of the vehicle; the water inlet end of the first water storage bottle (23) is communicated with the water outlet end of the heat exchange core body (18); the water outlet end of the electric drive (25) is communicated with the water inlet end of the second water storage bottle (27), and the water outlet end of the second water storage bottle (27) is communicated with the water inlet end of the electric drive (25);
a first three-way valve (16), wherein the water inlet end of the first three-way valve (16) is communicated with the water outlet end of the engine (22), the water outlet end of the cooling liquid of the battery cooler (14) and the water outlet end of a first water storage bottle (23), and the water outlet end of the first three-way valve (16) is communicated with the water inlet end of the heat exchange core body (18) and the water inlet end of the battery pack (17);
a water inlet end of the first four-way valve (24) is communicated with a water outlet end of the electric drive (25), and a water outlet end of the first four-way valve (24) is respectively communicated with a water inlet end of the electric drive cooling loop, a water inlet end of the first three-way valve (16) and a water inlet end of the battery pack (17);
a water inlet end of the second three-way valve (20) is communicated with a water outlet end of the battery pack (17), and a water outlet end of the second three-way valve (20) is communicated with a water inlet end of the electric drive (25) and a water inlet end of the first water storage bottle (23);
a water inlet end of the second four-way valve (21) is communicated with a water outlet end of the second three-way valve (20) and a water outlet end of the heat exchange core body (18), and the water outlet end of the second four-way valve (21) is respectively communicated with a water inlet end of the engine (22), a cooling liquid water inlet end of the battery cooler (14) and a water inlet end of the electric drive (25);
the cooling of the electric drive (25) and/or the cooling or heating of the passenger cabin and/or the battery pack (17) is achieved by controlling the opening and closing of the electric heating PTC (19) and the flow direction of the first three-way valve (16), the second three-way valve (20), the first four-way valve (24) and the second four-way valve (21).
2. The system of claim 1, wherein the coolant circulation loop further comprises:
a heating water pump (15) disposed before a water inlet end of the first three-way valve (16) and after a water outlet end of the engine (22), a water outlet end of the first four-way valve (24), a water outlet end of the first water storage bottle (23), and a coolant water outlet end of the battery cooler chiller (14);
a cooling water pump (26) arranged before the water inlet end of the electric drive (25) and after the water outlet end of the second water bottle (27), the water outlet end of the second four-way valve (21), the water outlet end of the second three-way valve (20) and the water outlet end of the electric drive cooling circuit.
3. The system according to claim 1 or 2, characterized in that the system further comprises:
the heating inlet water temperature sensor is arranged between the water outlet end of the heating water pump (15) and the water inlet end of the first three-way valve (16);
the refrigerant heat exchange inlet water temperature sensor is arranged in front of the water inlet end of the second four-way valve (21) and the water inlet end of the first water storage bottle (23) and behind the water outlet end of the heat exchange core body (18) and the water outlet end of the second three-way valve (20);
an electrically driven (25) inlet water temperature sensor disposed between the inlet end of the electric drive (25) and the outlet end of the cooling water pump (26).
4. The system of claim 1 or 3,
the refrigerant circulation circuit includes:
the compressor (11), the condenser (12) and the electronic expansion valve (13) are communicated in sequence; the compressor (11) is communicated with a refrigerant outlet of the battery cooler (14), and the electronic expansion valve (13) is communicated with a refrigerant inlet of the battery cooler (14);
the electrically driven cooling circuit includes:
and the low-temperature radiator (28) is coupled with the condenser (12), the water inlet end of the low-temperature radiator (28) is communicated with the water outlet end of the first four-way valve (24), and the water outlet end of the low-temperature radiator (28) is communicated with the water inlet end of the cooling water pump (26).
5. A thermal management control method for a hybrid vehicle and/or an extended range vehicle, which is applied to the thermal management system for a hybrid vehicle according to claim 4, characterized by comprising:
judging whether the vehicle has a cooling or heating demand at present;
when detecting that a user has a cabin heating demand, judging whether an engine (22) is started;
if the engine (22) is started, judging whether the engine (22) can be independently used as a heating source;
if the engine (22) can be independently used as a heating source, the heating water pump (15) is controlled to be started, the first three-way valve (16) is controlled to conduct the heating water pump (15) and the heat exchange core body (18), and the second four-way valve (21) is controlled to conduct the heat exchange core body (18) and the engine (22); if the engine (22) can not be used as a heating source alone, the heating water pump (15) is controlled to be started, the first three-way valve (16) is controlled to conduct the heating water pump (15) and the heat exchange core body (18), the second four-way valve (21) is controlled to conduct the heat exchange core body (18) and the engine (22), and the air heating PTC (19) is controlled to be started;
if the engine (22) is not started, judging whether the electric drive (25) can be independently used as a heating source;
if the electric drive (25) is determined to be capable of being used as a heating source independently, a heating water pump (15) and a cooling water pump (26) are controlled to be started, the first four-way valve (24) is controlled to conduct the electric drive (25) and the heating water pump (15), the first three-way valve (16) is controlled to conduct the heating water pump (15) and the heat exchange core (18), and the second four-way valve (21) is controlled to conduct the heat exchange core (18) and the cooling water pump (26);
if the electric drive (25) cannot be used as a heating source independently, controlling a heating water pump (15) and a cooling water pump (26) to be started, controlling the first four-way valve (24) to conduct the electric drive (25) and the heating water pump (15), controlling the first three-way valve (16) to conduct the heating water pump (15) and the heat exchange core (18), controlling the second four-way valve (21) to conduct the heat exchange core (18) and the cooling water pump (26), and controlling a wind heating electric heating PTC (19) to be started;
if the engine (22) is not started and the electric drive (25) can not be used as a heating source, the heating water pump (15) is controlled to be started, the heating water pump (15) and the heat exchange core body (18) are conducted by controlling the first three-way valve (16), and the air heating PTC (19) is controlled to be started.
6. The method of claim 5, further comprising:
if the battery pack (17) is detected to have a heating demand while the user is detected to have a cabin heating demand,
when the engine (22) can be or cannot be independently used as a heating source, the first three-way valve (16) is also controlled to conduct the heating water pump (15) and the battery pack (17), and the second three-way valve (20) is controlled to conduct the battery pack (17) and the second four-way valve (21); alternatively, the first and second electrodes may be,
when the electric drive (25) is determined to be capable of being used as a heating source or not, the first three-way valve (16) is controlled to conduct the heating water pump (15) and the battery pack (17), the second three-way valve (20) is controlled to conduct the battery pack (17) and the second four-way valve (21), and/or the battery pack (17) and the cooling water pump (26).
7. The method of claim 6, further comprising:
judging whether the engine (22) is started or not when only the battery pack (17) is detected to have a heating demand;
if the engine (22) is started, judging whether the engine (22) can be independently used as a heating source;
if the engine (22) can be independently used as a heating source, the heating water pump (15) is controlled to be started, the first three-way valve (16) is controlled to conduct the heating water pump (15) and the battery pack (17), and the second four-way valve (21) is controlled to conduct the battery pack (17) and the engine (22); if the engine (22) can not be used as a heating source alone, controlling the heating water pump (15) to start, controlling the first three-way valve (16) to conduct the heating water pump (15) and the battery pack (17), controlling the second four-way valve (21) to conduct the battery pack (17) and the engine (22), and controlling the air heating PTC (19) to start;
if the engine (22) is not started, judging whether the electric drive (25) can be used as a heating source;
if the electric drive (25) is determined to be capable of being used as a heating source, a heating water pump (15) and a cooling water pump (26) are controlled to be started, the first four-way valve (24) is controlled to conduct the electric drive (25) and the heating water pump (15), the first three-way valve (16) is controlled to conduct the heating water pump (15) and a battery pack (17), the second three-way valve (20) is controlled to conduct the battery pack (17) and the cooling water pump (26) independently, or the second three-way valve (20) and the second four-way valve (21) are controlled to conduct the battery pack (17) and the cooling water pump (26) together.
8. The method of claim 7,
specific conditions under which the engine (22) can be solely used as a heating source are as follows:
the heating inlet water temperature T1 detected by a heating inlet water temperature sensor arranged between the water outlet end of the heating water pump (15) and the water inlet end of the first three-way valve (16) is greater than or equal to a first preset temperature T1;
the specific conditions under which the electric drive (25) can be used as a heating source are:
the temperature T2 of the electric drive (25) is greater than or equal to a second preset temperature T2, the temperature T3 of the electric drive inlet water detected by an electric drive inlet water temperature sensor arranged between the water outlet end of the cooling water pump (26) and the water inlet end of the electric drive (25) is greater than or equal to a third preset temperature T3, and the current ambient temperature T4 of the vehicle is less than or equal to a fourth preset temperature T4;
the specific conditions under which the electric drive (25) can be used alone as a heating source are:
the temperature T2 of the electric drive (25) is greater than or equal to the second preset temperature T2, the temperature T3 of the electric drive inlet water detected by an electric drive inlet water temperature sensor arranged between the water outlet end of the cooling water pump (26) and the water inlet end of the electric drive (25) is greater than or equal to the third preset temperature T3, the current ambient temperature T4 of the vehicle is less than or equal to the fourth preset temperature T4, and the temperature T1 of the heating inlet water detected by a heating inlet water temperature sensor is greater than or equal to the first preset temperature T1.
9. The method of claim 6, 7 or 8, further comprising:
when detecting that only a user has a cabin cooling demand, controlling a heating water pump (15) to start, controlling a compressor (11) to start, controlling a first three-way valve (16) to conduct the heating water pump (15) and a heat exchange core body (18), and controlling a second four-way valve (21) to conduct a heat exchange core body (18) and a cooling liquid water inlet end of a battery cooler (14);
when only the battery pack (17) is detected to have a cooling demand, controlling a heating water pump (15) to start, controlling a compressor (11) to start, controlling a first three-way valve (16) to conduct the battery pack (17) and a heat exchange core body (18), and controlling a second four-way valve (21) to conduct a battery pack (17) and a cooling liquid water inlet end of a battery cooler (14);
when detecting that the user has cabin cooling demand and battery package (17) has the cooling demand, then control heating water pump (15) and start, control compressor (11) start, control first three-way valve (16) and lead through heating water pump (15) and heat transfer core (18), control second four-way valve (21) and lead through the coolant liquid income water end of heat transfer core (18) and battery cooler chiller (14), control first three-way valve (16) and lead through battery package (17) and heat transfer core (18), control second four-way valve (21) and lead through the coolant liquid income water end of battery package (17) and battery cooler chiller (14).
10. The method according to any one of claims 5 to 6, further comprising:
when the electric drive (25) is detected to have a cooling demand, the cooling water pump (26) and the compressor (11) are controlled to be started, and the first four-way valve (24) is controlled to conduct the low-temperature radiator (28) and the electric drive (25).
11. A vehicle comprising a thermal management system for and/or extended range vehicles as claimed in any one of claims 1 to 4.
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