CN116039322A - Thermal management system and electric vehicle - Google Patents

Thermal management system and electric vehicle Download PDF

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Publication number
CN116039322A
CN116039322A CN202211101582.3A CN202211101582A CN116039322A CN 116039322 A CN116039322 A CN 116039322A CN 202211101582 A CN202211101582 A CN 202211101582A CN 116039322 A CN116039322 A CN 116039322A
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CN
China
Prior art keywords
way valve
thermal management
management system
water pump
expansion valve
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202211101582.3A
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Chinese (zh)
Inventor
林务田
万星荣
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GAC Aion New Energy Automobile Co Ltd
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GAC Aion New Energy Automobile Co Ltd
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Publication date
Application filed by GAC Aion New Energy Automobile Co Ltd filed Critical GAC Aion New Energy Automobile Co Ltd
Priority to CN202211101582.3A priority Critical patent/CN116039322A/en
Publication of CN116039322A publication Critical patent/CN116039322A/en
Pending legal-status Critical Current

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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
    • B60H1/00271—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
    • B60H1/00271—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
    • B60H1/00357—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
    • B60H1/00392—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell for electric vehicles having only electric drive means
    • 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
    • B60H1/00485—Valves for air-conditioning devices, e.g. thermostatic valves
    • 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
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
    • B60H1/00878—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
    • B60H1/00885—Controlling the flow of heating or cooling liquid, e.g. valves or pumps
    • 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
    • B60H1/32—Cooling devices
    • B60H1/3204—Cooling devices using compression
    • B60H1/3205—Control means therefor
    • B60H1/3213—Control means therefor for increasing the efficiency in a vehicle heat pump
    • 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
    • B60H1/32—Cooling devices
    • B60H1/3204—Cooling devices using compression
    • B60H1/323—Cooling devices using compression characterised by comprising auxiliary or multiple systems, e.g. plurality of evaporators, or by involving auxiliary cooling devices
    • 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
    • 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
    • B60H1/32—Cooling devices
    • B60H2001/3286—Constructional features
    • 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)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

The embodiment of the application provides a thermal management system and an electric vehicle, and relates to the technical field of thermal management. The heat management system comprises a compressor, a condenser assembly, a three-way valve, an expansion valve assembly, an evaporator, a cooler, a gas-liquid separator, a battery water pump, a power battery, a multi-way valve and a radiator, wherein the flow direction and the flow rate of a refrigerant can be changed through switching control of the three-way valve and the expansion valve assembly, and the refrigerating and heating requirements of a heat pump air conditioner of an electric vehicle under various conditions can be realized; through the switching control of the multi-way valve, the flow direction of the cooling liquid can be changed, the functions of cooling, heating, temperature equalization or heat preservation of all subsystems in the thermal management system are met, and the technical effect of thermal management energy efficiency ratio is achieved.

Description

Thermal management system and electric vehicle
Technical Field
The application relates to the technical field of thermal management, in particular to a thermal management system and an electric vehicle.
Background
At present, most of the existing electric vehicle heat management schemes are mutually independent power supply devices, electric drive device cooling systems, power battery temperature control systems, warm air systems and air conditioning systems, the energy utilization efficiency is low, the parts are distributed and occupy large space, or some electric vehicle heat management schemes are partially coupled, but the temperature control functions are not comprehensive enough and the energy consumption is still high, or some electric vehicle heat management schemes are provided with heat pump functions, the energy conversion efficiency is not ideal, few direct heat pump air conditioners are applied, the structure is relatively complex, the manufacturing cost is high, the waste heat energy of the whole electric vehicle can not be fully utilized, and the energy efficiency utilization rate is to be improved.
Disclosure of Invention
An object of the embodiment of the application is to provide a thermal management system and an electric vehicle, which can achieve the technical effect of improving the thermal management energy efficiency ratio.
In a first aspect, embodiments of the present application provide a thermal management system comprising a compressor, a condenser assembly, a three-way valve, an expansion valve assembly, an evaporator, a cooler, a gas-liquid separator, a battery water pump, a power battery, a multi-way valve, and a radiator;
the condenser assembly comprises an indoor condenser and an outdoor condenser, wherein the first end of the compressor is connected with the first end of the indoor condenser, and the second end of the indoor condenser is connected with the inlet of the three-way valve;
the expansion valve assembly comprises a first expansion valve and a second expansion valve, a first outlet of the three-way valve is connected with a first end of the outdoor condenser, a first end of the first expansion valve and a first end of the second expansion valve, a second end of the first expansion valve, the evaporator, the gas-liquid separator and a second end of the compressor are sequentially connected, and a second end of the second expansion valve, a refrigerant passage of the cooler and the gas-liquid separator are sequentially connected;
the first end of the multi-way valve, the battery water pump, the internal heat exchange pipeline of the power battery and the second end of the multi-way valve are sequentially connected;
the first cooling liquid end of the cooler is connected with the third end of the multi-way valve, and the second cooling liquid end of the cooler is connected with the fourth end of the multi-way valve;
the first end of the radiator is connected to the fifth end of the multi-way valve, and the second end of the radiator is connected to the sixth end of the multi-way valve.
In the implementation process, the thermal management system is applied to the electric vehicle, and the flow direction and the flow rate of the refrigerant can be changed through the switching control of the three-way valve and the expansion valve assembly, so that the refrigerating and heating requirements of the heat pump air conditioner of the electric vehicle under various conditions can be realized; in addition, through the switching control of the multi-way valve, the flow direction of the cooling liquid can be changed, the coupling of other parts (such as a power supply device, an electric drive device cooling system, a power battery temperature control system, a warm air system, an air conditioning system and the like) of the electric vehicle can be realized, the functions of cooling, heating, temperature equalization or heat preservation of all subsystems in a thermal management system can be met, and the waste heat of other parts (such as a power battery, a power supply device, an electric drive device and the like) of the electric vehicle can be used as a low-temperature heat source when the air conditioner is used at appropriate time, so that the energy efficiency utilization rate of the whole vehicle is improved; thus, the thermal management system can achieve the technical effect of thermal management energy efficiency ratio.
Further, the system also includes a PTC heater having a first end connected to the seventh end of the multi-way valve and a second end connected to the eighth end of the multi-way valve.
Further, the system also includes a motor water pump, a first end of the motor water pump 16 is connected to a ninth end of the multi-way valve, and a second end of the motor water pump is connected to a tenth end of the multi-way valve.
Further, the system further comprises a power supply device, and the second end of the motor water pump, the power supply device and the tenth end of the multi-way valve are sequentially connected.
Further, the system further comprises an electric driving device, and the second end of the motor water pump, the power supply device, the electric driving device and the tenth end of the multi-way valve are sequentially connected.
Further, the compressor is an electric compressor.
Further, the first expansion valve and the second expansion valve are electronic expansion valves.
Further, the system also includes a check valve having a first end connected to the second end of the outdoor condenser and a second end connected to the first end of the second expansion valve.
Further, the system also includes a reservoir having a first end connected to the second end of the outdoor condenser and a second end connected to the first end of the one-way valve.
In a second aspect, embodiments of the present application provide an electric vehicle comprising the thermal management system of any one of the first aspects.
Additional features and advantages of the disclosure will be set forth in the description which follows, or in part will be obvious from the description, or may be learned by practice of the techniques disclosed herein.
In order to make the above objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a thermal management system according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of a first mode of a thermal management system according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a second mode of a thermal management system according to an embodiment of the present application;
FIG. 4 is a third mode schematic of a thermal management system provided in an embodiment of the present application;
FIG. 5 is a fourth schematic diagram of a thermal management system according to an embodiment of the present application;
FIG. 6 is a fifth mode schematic of a thermal management system provided in an embodiment of the present application;
FIG. 7 is a sixth mode schematic of a thermal management system provided in an embodiment of the present application;
FIG. 8 is a seventh mode schematic of a thermal management system provided in an embodiment of the present application;
FIG. 9 is a schematic diagram of an eighth mode of a thermal management system provided in an embodiment of the present application;
FIG. 10 is a schematic diagram of a second mode of a thermal management system according to an embodiment of the present application;
FIG. 11 is a tenth mode schematic of a thermal management system provided in an embodiment of the present application;
FIG. 12 is an eleventh mode schematic view of a thermal management system provided in an embodiment of the present application;
FIG. 13 is a twelfth mode schematic view of a thermal management system provided in an embodiment of the present application;
FIG. 14 is a thirteenth mode schematic view of a thermal management system provided in an embodiment of the present application;
FIG. 15 is a fourteenth mode schematic of a thermal management system according to an embodiment of the present application.
Icon: a compressor 1; an indoor condenser 2; a three-way valve 3; an outdoor condenser 4; a liquid reservoir 5; a one-way valve 6; a first expansion valve 7; an evaporator 8; a second expansion valve 9; a cooler 10; a gas-liquid separator 11; a battery water pump 12; a power battery 13; a multi-way valve 14; a PTC heater 15; a motor water pump 16; a power supply device 17; an electric drive 18; a heat sink 19.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, are intended to be within the scope of the present application.
In the present application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are used primarily to better describe the present application and its embodiments and are not intended to limit the indicated device, element or component to a particular orientation or to be constructed and operated in a particular orientation.
Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "mounted," "configured," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or a point connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
Furthermore, the terms "first," "second," and the like, are used primarily to distinguish between different devices, elements, or components (the particular species and configurations may be the same or different), and are not used to indicate or imply the relative importance and number of devices, elements, or components indicated. Unless otherwise indicated, the meaning of "a plurality" is two or more.
The embodiment of the application provides a thermal management system and an electric vehicle, which can be applied to the comprehensive thermal management process of the electric vehicle; the heat management system is applied to the electric vehicle, and can change the flow direction and the flow rate of the refrigerant through switching control of the three-way valve and the expansion valve assembly, so that the refrigerating and heating requirements of the heat pump air conditioner of the electric vehicle under various conditions can be realized; in addition, through the switching control of the multi-way valve, the flow direction of the cooling liquid can be changed, the coupling of other parts (such as a power supply device, an electric drive device cooling system, a power battery temperature control system, a warm air system, an air conditioning system and the like) of the electric vehicle can be realized, the functions of cooling, heating, temperature equalization or heat preservation of all subsystems in a thermal management system can be met, and the waste heat of other parts (such as a power battery, a power supply device, an electric drive device and the like) of the electric vehicle can be used as a low-temperature heat source when the air conditioner is used at appropriate time, so that the energy efficiency utilization rate of the whole vehicle is improved; thus, the thermal management system can achieve the technical effect of thermal management energy efficiency ratio.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a thermal management system according to an embodiment of the present application, where the thermal management system includes a compressor 1, a condenser assembly, a three-way valve 3, an expansion valve assembly, an evaporator 8, a cooler 10, a gas-liquid separator 11, a battery water pump 12, a power battery 13, a multi-way valve 14, and a radiator 19.
Illustratively, the condenser assembly includes an interior condenser 2 and an exterior condenser 4, a first end of the compressor 1 being connected to the first end of the interior condenser 2, and a second end of the interior condenser 2 being connected to an inlet of the three-way valve 3.
Optionally, the three-way valve 3 is an air-conditioning three-way valve.
Illustratively, the expansion valve assembly includes a first expansion valve 7 and a second expansion valve 9, the first outlet of the three-way valve 3 is connected to the first end of the outdoor condenser 4, the first end of the first expansion valve 7, the first end of the second expansion valve 9, the second end of the first expansion valve 7, the evaporator 8, the gas-liquid separator 11, and the second end of the compressor 1 are sequentially connected, and the second end of the second expansion valve 9, the refrigerant passage of the cooler 10, and the gas-liquid separator 11 are sequentially connected.
Illustratively, the cooler 10 has a refrigerant passage and a coolant passage, i.e., the cooler 10 has 4 connection ports.
Illustratively, the first end of the multi-way valve 14, the battery water pump 12, the internal heat exchange line of the power battery 13, and the second end of the multi-way valve 14 are connected in sequence.
Illustratively, the first coolant side of the cooler 10 is connected to the third side of the multi-way valve 14, and the second coolant side of the cooler 10 is connected to the fourth side of the multi-way valve.
Illustratively, a first end of the radiator 19 is connected to a fifth end of the multi-way valve 14, and a second end of the radiator 19 is connected to a sixth end of the multi-way valve 14.
In some embodiments, the thermal management system is applied to the electric vehicle, and through switching control of the three-way valve 3 and the expansion valve assembly, the flow direction and the flow rate of the refrigerant can be changed, so that the refrigerating and heating requirements of the heat pump air conditioner of the electric vehicle under various conditions can be realized; in addition, through the switching control of the multi-way valve 14, the flow direction of the cooling liquid can be changed, the coupling of other components (such as a power supply device, an electric drive device cooling system, a power battery temperature control system, a warm air system, an air conditioning system and the like) of the electric vehicle can be realized, the functions of cooling, heating, temperature equalization or heat preservation of all subsystems in the thermal management system can be met, and the waste heat of other components (such as a power battery, a power supply device, an electric drive device and the like) of the electric vehicle can be used as a low-temperature heat source when the air conditioner is used at appropriate time, so that the energy efficiency utilization rate of the whole vehicle is improved; thus, the thermal management system can achieve the technical effect of thermal management energy efficiency ratio.
Illustratively, the thermal management system further includes a PTC heater 15, a first end of the PTC heater 15 being connected to a seventh end of the multi-way valve 14, and a second end of the PTC heater 15 being connected to an eighth end of the multi-way valve 14.
Illustratively, a positive temperature coefficient (PTC, positive Temperature Coefficient), which refers broadly to a semiconductor material or component having a very large positive temperature coefficient; the commonly referred to PTC refers to a positive temperature coefficient thermistor, also known as a PTC thermistor.
Illustratively, the thermal management system further includes a motor water pump 16, a first end of the motor water pump 16 being connected to a ninth end of the multi-way valve 14, and a second end of the motor water pump 16 being connected to a tenth end of the multi-way valve 14.
Illustratively, the thermal management system further includes a power supply device 17, the second end of the motor water pump 16, the power supply device, and the tenth end of the multi-way valve 14 are connected in sequence.
Illustratively, the thermal management system further includes an electric drive 18, and the second end of the electric motor pump 16, the power supply 17, the electric drive 18, and the tenth end of the multi-way valve 14 are sequentially connected.
In some embodiments, the multi-way valve 14 is a twelve-way valve, with the tenth and twelfth ends of the multi-way valve 14 connected.
The compressor 1 is illustratively an electric compressor.
The first expansion valve 7 and the second expansion valve 9 are illustratively electronic expansion valves.
Illustratively, the thermal management system further includes a check valve 6, a first end of the check valve 6 being connected to a second end of the outdoor condenser 4, and a second end of the check valve 6 being connected to a first end of the second expansion valve 9.
Illustratively, the thermal management system further includes a reservoir 5, a first end of the reservoir 5 being connected to a second end of the outdoor condenser 4, and a second end of the reservoir 5 being connected to a first end of the check valve 6.
Referring to fig. 2, fig. 2 is a schematic diagram of a first mode of a thermal management system according to an embodiment of the disclosure.
Illustratively, FIG. 2 illustrates an air conditioning passenger compartment cooling mode, power supply, electric drive, and power battery cooling mode; under the high-temperature environment condition, when the power supply device and the electric drive device have cooling requirements, the motor water pump 16 works, and cooling liquid sequentially flows through the power supply device 17, the electric drive device 18, the twelve-way valve 14, the radiator 19 (heat exchange), the twelve-way valve 14 and the return motor water pump 16, and heat of the power supply device 17 and the electric drive device 18 is brought to the radiator 19 by the cooling liquid to exchange heat with air outside the vehicle, so that the cooling purpose is achieved; when the temperature of the power battery 13 is higher than a set value, the battery water pump 12 works, the cooling liquid sequentially flows through the power battery 13, the twelve-way valve 14, the cooler 10 (heat exchange), the twelve-way valve 14, the PTC heater 15 (not working), the twelve-way valve 14 and the return battery water pump 12, and the heat of the power battery 13 is taken away by the cooler 10 to achieve the purpose of cooling; when the passenger cabin of the vehicle has a cooling requirement and the power battery has a cooling requirement, the compressor 1 is started, the refrigerant flows through the indoor condenser 2 (without heat exchange), the three-way valve 3, the outdoor condenser 4 (heat exchange), the liquid storage 5 and the one-way valve 6, at the moment, the refrigerant is separated into two paths, and the first path passes through the second expansion valve 9 (working), the cooler 10 (heat exchange), the gas-liquid separator 11 and returns to the compressor 1, and the cooling of the power battery 13 is implemented through the cooler 10. The second path returns to the compressor 1 through the first expansion valve 7 (working), the evaporator 8 (heat exchanging) and the gas-liquid separator 11, and the cooling of the passenger cabin is implemented through the evaporator 8, so that another heat exchanging cycle is formed.
Referring to fig. 3, fig. 3 is a schematic diagram of a second mode of the thermal management system according to the embodiment of the present application.
Exemplary, FIG. 3 illustrates an air conditioning passenger compartment cooling, power device, electric drive device cooling, power battery temperature equalization mode; under the high-temperature environment condition, when the power supply device and the electric drive device have cooling requirements, the motor water pump 16 works, and cooling liquid sequentially flows through the power supply device 17, the electric drive device 18, the twelve-way valve 14, the radiator 19 (heat exchange), the twelve-way valve 14 and the return motor water pump 16, and heat of the power supply device 17 and the electric drive device 18 is brought to the radiator 19 by the cooling liquid to exchange heat with air outside the vehicle, so that the cooling purpose is achieved; when the power battery 13 has the temperature equalization requirement, the battery water pump 12 works, the cooling liquid sequentially flows through the power battery 13, the twelve-way valve 14, the cooler 10 (without heat exchange), the twelve-way valve 14, the PTC heater 15 (without working), the twelve-way valve 14 and the return battery water pump 12, and the power battery 13 achieves the aim of equalizing the internal temperature; when the passenger cabin of the vehicle has a cooling requirement, the compressor 1 is started, the refrigerant flows through the indoor condenser 2 (without heat exchange), the three-way valve 3, the outdoor condenser 4 (heat exchange), the liquid receiver 5 and the one-way valve 6, the first expansion valve 7 (working), the evaporator 8 (heat exchange), the gas-liquid separator 11 and the return compressor 1, and the cooling of the power battery 13 is implemented through the cooler 10.
Referring to fig. 4, fig. 4 is a schematic diagram of a third mode of the thermal management system according to the embodiment of the present application.
Illustratively, FIG. 4 illustrates an air-conditioning passenger compartment uncooled, power device, electric drive, power battery cooling mode; under the high-temperature or normal-temperature environment condition, when the power supply device and the electric drive device have cooling requirements, the motor water pump 16 works, and cooling liquid sequentially flows through the power supply device 17, the electric drive device 18, the twelve-way valve 14, the radiator 19 (heat exchange), the twelve-way valve 14 and the return motor water pump 16, and heat of the power supply device 17 and the electric drive device 18 is brought to the radiator 19 by the cooling liquid to exchange heat with air outside the vehicle, so that the cooling purpose is achieved; when the temperature of the power battery 13 is higher than a set value, the battery water pump 12 works, the cooling liquid sequentially flows through the power battery 13, the twelve-way valve 14, the cooler 10 (heat exchange), the twelve-way valve 14, the PTC heater 15 (not working), the twelve-way valve 14 and the return battery water pump 12, and the heat of the power battery 13 is taken away by the cooler 10 to achieve the purpose of cooling; when the vehicle passenger cabin has no cooling requirement and the power battery has a cooling request, the compressor 1 is started, the refrigerant flows through the indoor condenser 2 (without heat exchange), the three-way valve 3, the outdoor condenser 4 (heat exchange), the liquid storage 5 and the one-way valve 6, the second expansion valve 9 (work), the cooler 10 (heat exchange), the gas-liquid separator 11 and the return compressor 1, and the cooling of the power battery 13 are implemented through the cooler 10.
Referring to fig. 5, fig. 5 is a schematic diagram of a fourth mode of the thermal management system according to the embodiment of the present application.
Illustratively, FIG. 5 shows a power device, electric drive device cooling, and power battery temperature equalization mode when the air conditioner is not in operation; under the high-temperature or normal-temperature environment condition, when the power supply device and the electric drive device have cooling requirements, the motor water pump 16 works, cooling liquid sequentially flows through the power supply device 17, the electric drive device 18, the ten-way valve 14, the radiator 19 (heat exchange), and the twelve-way valve 14 returns to the motor water pump 16, and heat of the power supply device 17 and the electric drive device 18 is brought to the radiator 19 by the cooling liquid to exchange heat with air outside the vehicle, so that the cooling purpose is achieved; when the power battery 13 has the temperature equalization requirement, the battery water pump 12 works, the cooling liquid sequentially flows through the power battery 13, the twelve-way valve 14, the cooler 10 (without heat exchange), the twelve-way valve 14, the PTC heater 15 (without working), the twelve-way valve 14 and the return battery water pump 12, and the power battery achieves the aim of equalizing the internal temperature; when the passenger cabin of the vehicle has no cooling requirement, the air conditioner does not work.
Referring to fig. 6, fig. 6 is a schematic diagram of a fifth mode of the thermal management system according to the embodiment of the present application.
Illustratively, FIG. 6 illustrates an air conditioning passenger compartment cooling mode with a common radiator cooling mode for the power supply device, the electric drive device, and the power battery; under normal temperature environment conditions, the power supply device, the electric drive device and the power battery can share a radiator for cooling, at this time, the battery water pump 12 and the motor water pump 16 work, and cooling liquid sequentially flows through the power supply device 17, the electric drive device 18, the ten-way valve 14, the radiator 19 (heat exchange), the twelve-way valve 14, the battery water pump 12, the power battery 13, the ten-way valve 14, the PTC heater 15 (no work), the twelve-way valve 14, the cooler 10 (no heat exchange), the twelve-way valve 14 and the return motor water pump 16 to form a heat dissipation cycle; when the passenger cabin of the vehicle has a cooling requirement, the compressor 1 is started, the refrigerant flows through the indoor condenser 2 (without heat exchange), the three-way valve 3, the outdoor condenser 4 (heat exchange), the liquid receiver 5 and the one-way valve 6, the first expansion valve 7 (working), the evaporator 8 (heat exchange), the gas-liquid separator 11 and the return compressor 1, and the cooling of the power battery 13 is implemented through the cooler 10.
Referring to fig. 7, fig. 7 is a schematic diagram of a seventh mode of the thermal management system according to the embodiment of the present application.
Illustratively, fig. 7 shows a radiator cooling mode for the air conditioner, in which the power supply device, the electric drive device, and the power battery are all in common; under normal temperature environment conditions, the power supply device, the electric drive device and the power battery can share a radiator for cooling, at this time, the battery water pump 12 and the motor water pump 16 work, and cooling liquid sequentially flows through the power supply device 17, the electric drive device 18, the ten-way valve 14, the radiator 19 (heat exchange), the twelve-way valve 14, the battery water pump 12, the power battery 13, the ten-way valve 14, the PTC heater 15 (no work), the twelve-way valve 14, the cooler 10 (no heat exchange), the twelve-way valve 14 and the return motor water pump 16 to form a heat dissipation cycle; when the passenger cabin of the vehicle has no cooling requirement, the air conditioner does not work.
Referring to fig. 8, fig. 8 is a schematic diagram of a seventh mode of the thermal management system according to the embodiment of the present application.
Illustratively, fig. 8 shows an air conditioning heat pump heating, power supply device, electric drive device, and power battery cooling mode; under the lower temperature environment condition, when the passenger cabin of the vehicle has heating requirements and the temperature of the power battery is higher than a set value, the compressor 1 is started, the three-way valve 3 is controlled to switch, and the refrigerant flows through the indoor condenser 2 (heat exchange), the three-way valve 3, the second expansion valve 9 (work), the cooler 10 (heat exchange), the gas-liquid separator 11 and the return compressor 1 to form the power battery waste heat heating cycle; at this time, the battery water pump 12 works, the cooling liquid sequentially flows through the power battery 13, the twelve-way valve 14, the cooler 10 (heat exchange), the twelve-way valve 14, the PTC heater 15 (non-working), the twelve-way valve 14 and the return battery water pump 12 to form circulation to provide a heat source for the air conditioner, and meanwhile, the heat of the power battery 13 is taken away by the cooler 10 to achieve the purpose of cooling; when the power supply device and the electric drive device have cooling requirements, the motor water pump 16 works, cooling liquid sequentially flows through the power supply device 17, the electric drive device 18, the ten-way valve 14, the radiator 19 (heat exchange) and the twelve-way valve 14 to return to the motor water pump 16, and heat of the power supply device 17 and the electric drive device 18 is brought to the radiator 19 by the cooling liquid to exchange heat with air outside the vehicle, so that the cooling purpose is achieved.
Referring to fig. 9, fig. 9 is an eighth mode schematic diagram of a thermal management system according to an embodiment of the disclosure.
Exemplary, FIG. 9 shows an air conditioning heat pump heating, power supply device, electric drive device cooling, and power battery temperature equalization mode; under the lower temperature environment condition, when the passenger cabin of the vehicle has heating requirements and the waste heat is insufficient, the compressor 1 is started, the three-way valve 3 is controlled to switch, the refrigerant flows through the indoor condenser 2 (heat exchange), the three-way valve 3, the second expansion valve 9 (work), the cooler 10 (heat exchange), the gas-liquid separator 11 and the return compressor 1, and the waste heat and the environmental heat are absorbed through the cooler 10 to form a heating cycle; at this time, the motor water pump 16 works, and the cooling liquid sequentially flows through the power supply device 17, the electric drive device 18, the ten-way valve 14, the cooler 10 (heat exchange), the twelve-way valve 14, the radiator 19 (heat exchange), the twelve-way valve 14 and the return motor water pump 16 to form a circulation to provide a heat source for the air conditioner; when the power battery 13 has the temperature equalization requirement, the battery water pump 12 works, the cooling liquid sequentially flows through the power battery 13, the twelve-way valve 14, the PTC heater 15 (not working), the twelve-way valve 14 and the return battery water pump 12 to form circulation, and the power battery 13 achieves the purpose of equalizing the internal temperature.
Referring to fig. 10, fig. 10 is a schematic diagram of a second mode of the thermal management system according to the embodiment of the present application.
Exemplary, FIG. 10 shows a power supply device and an electric drive device cooling and power battery temperature equalizing mode when the air conditioner heat pump is not heating; under the lower-temperature environment condition, when the passenger cabin of the vehicle has no heating requirement, the air conditioner does not work; when the electric driving device has a cooling requirement, the motor water pump 16 works, and cooling liquid sequentially flows through the power supply device 17, the electric driving device 18, the ten-way valve 14, the radiator 19 (heat exchange), the twelve-way valve 14 and the return motor water pump 16, and heat of the power supply device 17 and the electric driving device 18 is brought to the radiator 19 by the cooling liquid to exchange heat with air outside the vehicle, so that the purpose of cooling is achieved; when the power battery 13 has the temperature equalization requirement, the battery water pump 12 works, the cooling liquid sequentially flows through the power battery 13, the ten-way valve 14, the cooler 10 (without heat exchange), the twelve-way valve 14, the PTC heater 15 (without working), the twelve-way valve 14 and the return battery water pump 12 to form circulation, and the power battery 13 achieves the purpose of equalizing the internal temperature.
Referring to fig. 11, fig. 11 is a schematic view of a tenth mode of the thermal management system according to the embodiment of the present application.
Illustratively, FIG. 11 illustrates an air conditioning heat pump heating, power device, electric drive device cooling, power battery cooling or heating mode; under the lower or low-temperature environment condition, when the passenger cabin of the vehicle has heating requirements and the waste heat is enough or the battery also needs to be heated, the compressor 1 is started, the three-way valve 3 is controlled to be switched, the refrigerant flows through the indoor condenser 2 (heat exchange), the three-way valve 3, the second expansion valve 9 (work), the cooler 10 (heat exchange) and the gas-liquid separator 11 to return to the compressor 1, and the waste heat is absorbed through the cooler 10 to form the whole waste heat heating cycle; at this time, the battery water pump 12 and the motor water pump 16 are operated, and the cooling liquid sequentially flows through the power supply device 17, the electric drive device 18, the twelve-way valve 14, the cooler 10 (for heat exchange), the twelve-way valve 14, the PTC heater 15 (which is operated when needed), the twelve-way valve 14, the battery water pump 12, the power battery 13, the twelve-way valve 14 and the return motor water pump 16 to form a circulation, so that waste heat is provided for the air conditioner, or the power battery 13 can be heated at the same time.
Referring to fig. 12, fig. 12 is an eleventh mode schematic view of a thermal management system according to an embodiment of the present application.
Exemplary, FIG. 12 shows an air conditioning heat pump heating, power supply device, electric drive device without radiator cooling, power battery temperature equalization mode; under the lower or low-temperature environment condition, when the passenger cabin of the vehicle has heating requirements and enough waste heat, the compressor 1 is started, the three-way valve 3 is controlled to switch, the refrigerant flows through the indoor condenser 2 (heat exchange), the three-way valve 3, the second expansion valve 9 (work), the cooler 10 (heat exchange), the gas-liquid separator 11 and the return compressor 1, and the waste heat is absorbed through the cooler 10 to form heating circulation; at this time, the motor water pump 16 works, and the cooling liquid sequentially flows through the power supply device 17, the electric drive device 18, the ten-way valve 14, the cooler 10 (heat exchange), the twelve-way valve 14 and the return motor water pump 16 to form circulation, so as to provide a heat source for the air conditioner; when the power battery 13 has the temperature equalization requirement, the battery water pump 12 works, the cooling liquid sequentially flows through the power battery 13, the twelve-way valve 14, the PTC heater 15 (not working), the twelve-way valve 14 and the return battery water pump 12 to form circulation, and the power battery 13 achieves the purpose of equalizing the internal temperature.
Referring to fig. 13, fig. 13 is a schematic diagram of a twelfth mode of the thermal management system according to the embodiment of the present application.
Fig. 13 illustrates an air conditioner heat pump non-heating, power supply device, electric drive device heat accumulation, and power battery temperature equalization mode; under the lower or low-temperature environment condition, when the passenger cabin of the vehicle has no heating requirement, the air conditioner does not work; at this time, the motor water pump 16 works, and the cooling liquid sequentially flows through the power supply device 17, the electric drive device 18, the ten-way valve 14, the cooler 10 (without heat exchange), the twelve-way valve 14 and the return motor water pump 16 to form circulation for heat accumulation and heat preservation; when the power battery 13 has the temperature equalization requirement, the battery water pump 12 works, the cooling liquid sequentially flows through the power battery 13, the twelve-way valve 14, the PTC heater 15 (not working), the twelve-way valve 14 and the return battery water pump 12 to form circulation, and the power battery 13 achieves the purpose of equalizing the internal temperature.
Referring to fig. 14, fig. 14 is a schematic view of a thirteenth mode of the thermal management system according to the embodiment of the present application.
Illustratively, fig. 14 shows an air conditioner heat pump self-circulation heating mode, in which a power supply device and an electric drive device store heat and a power battery heats; under the low-temperature environment condition, when the passenger cabin of the vehicle has heating requirements, the compressor 1 is started, the three-way valve 3 is controlled to switch, and the refrigerant flows through the indoor condenser 2 (heat exchange), the three-way valve 3, the first expansion valve 7 (work), the evaporator 8 (heat exchange), the gas-liquid separator 11 and the return compressor 1, and self-heating is performed through the air conditioning system to form self-circulation heating circulation; at this time, the motor water pump 16 works, and the cooling liquid sequentially flows through the power supply device 17, the electric drive device 18, the ten-way valve 14, the cooler 10 (without heat exchange), the twelve-way valve 14 and the return motor water pump 16 to form circulation for heat accumulation and heat preservation; when the power battery 13 has a rapid heating requirement, the battery water pump 12 works, and the cooling liquid sequentially flows through the power battery 13, the twelve-way valve 14, the PTC heater 15 (work), the twelve-way valve 14 and the return battery water pump 12 to form a circulation, so that the power battery 13 is rapidly heated.
Referring to fig. 15, fig. 15 is a schematic view of a fourteenth mode of a thermal management system according to an embodiment of the present application.
Illustratively, fig. 15 shows an air conditioner heat pump heating mode, in which the power supply device and the electric drive device are cooled, and the power battery is in a uniform temperature mode; under the low-temperature environment condition, when the passenger cabin of the vehicle has heating requirements and the waste heat is insufficient, the compressor 1 is started, the three-way valve 3 is controlled to switch, the refrigerant flows through the indoor condenser 2 (heat exchange), the three-way valve 3, the second expansion valve 9 (work), the cooler 10 (heat exchange), the gas-liquid separator 11 and the return compressor 1, and absorbs heat through the cooler 10 to form a heating cycle; at this time, the motor water pump 16 works, and the cooling liquid sequentially flows through the power supply device 17, the electric drive device 18, the ten-way valve 14, the PTC heater 15 (work), the twelve-way valve 14, the cooler 10 (heat exchange), the twelve-way valve 14 and the return motor water pump 16 to form circulation, so that a heat source is provided for the air conditioner; when the power battery 13 has the temperature equalization requirement, the battery water pump 12 works, the cooling liquid sequentially flows through the power battery 13, the twelve-way valve 14 and the return battery water pump 12 to form circulation, and the power battery 13 achieves the purpose of equalizing the internal temperature.
It should be noted that while the basic principles and main features of the embodiments of the present application have been shown and described in fig. 1 to 15, it should be understood by those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the embodiments of the present application, and the changes and modifications do not depart from the essence of the corresponding technical solution from the protection scope of the embodiments of the present application.
Illustratively, embodiments of the present application provide an electric vehicle including the thermal management system of fig. 1-15.
The thermal management system provided in the embodiment of the application is a single-radiator and single-valve direct heat pump type electric vehicle thermal management system, and the flow direction of the cooling liquid is changed by controlling the switching of the multi-way valve 14, so that the coupling of the power supply device 17, the cooling system of the electric drive device 18, the temperature control system of the power battery 13, the warm air system and the air conditioning system can be realized, the functions of cooling, heating, temperature equalization or heat preservation of all the systems can be satisfied, and the power battery 13, the power supply device 17 and the electric drive device 18 can be at proper working temperatures under various environmental temperatures and different driving working conditions, thereby satisfying the use requirements thereof, and improving the reliability and service life. Meanwhile, the embodiment of the application is designed through the efficient direct heat pump air conditioner, so that the air conditioner can meet the requirements of high efficiency and low energy consumption under various environmental temperatures and different driving working conditions, and the required cold and heat are provided for the passenger cabin, so that the comfort requirement is met. The waste heat of the power battery 13, the power supply device 17 and the electric drive device 18 can be used as a low-temperature heat source when the air conditioner is used for heating at proper time, so that the defects of low energy efficiency ratio, less heating quantity, easy frosting of an external evaporator and the like of the existing heat pump air conditioner at low ambient temperature are overcome, the energy efficiency utilization rate of the whole automobile is improved, and the endurance mileage of the electric automobile is increased. The technical scheme of the embodiment of the application is perfect, the design is ingenious, and the high integration level, the multifunction, the high energy efficiency and the low manufacturing cost can be realized.
In all embodiments of the present application, "large" and "small" are relative terms, "more" and "less" are relative terms, "upper" and "lower" are relative terms, and the description of such relative terms is not repeated herein.
It should be appreciated that reference throughout this specification to "in this embodiment," "in an embodiment of the application," or "as an alternative" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. Thus, the appearances of the phrases "in this embodiment," "in this application embodiment," or "as an alternative embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. Those skilled in the art will also appreciate that the embodiments described in the specification are all alternative embodiments and that the acts and modules referred to are not necessarily required in the present application.
In various embodiments of the present application, it should be understood that the size of the sequence numbers of the above processes does not mean that the execution sequence of the processes is necessarily sequential, and the execution sequence of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application.
The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. The heat management system is characterized by comprising a compressor, a condenser assembly, a three-way valve, an expansion valve assembly, an evaporator, a cooler, a gas-liquid separator, a battery water pump, a power battery, a multi-way valve and a radiator;
the condenser assembly comprises an indoor condenser and an outdoor condenser, wherein the first end of the compressor is connected with the first end of the indoor condenser, and the second end of the indoor condenser is connected with the inlet of the three-way valve;
the expansion valve assembly comprises a first expansion valve and a second expansion valve, a first outlet of the three-way valve is connected with a first end of the outdoor condenser, a first end of the first expansion valve and a first end of the second expansion valve, a second end of the first expansion valve, the evaporator, the gas-liquid separator and a second end of the compressor are sequentially connected, and a second end of the second expansion valve, a refrigerant passage of the cooler and the gas-liquid separator are sequentially connected;
the first end of the multi-way valve, the battery water pump, the internal heat exchange pipeline of the power battery and the second end of the multi-way valve are sequentially connected;
the first cooling liquid end of the cooler is connected with the third end of the multi-way valve, and the second cooling liquid end of the cooler is connected with the fourth end of the multi-way valve;
the first end of the radiator is connected to the fifth end of the multi-way valve, and the second end of the radiator is connected to the sixth end of the multi-way valve.
2. The thermal management system of claim 1, further comprising a PTC heater, a first end of the PTC heater connected to a seventh end of the multi-way valve, and a second end of the PTC heater connected to an eighth end of the multi-way valve.
3. The thermal management system of claim 1, further comprising a motor water pump, a first end of the motor water pump being connected to a ninth end of the multi-way valve, and a second end of the motor water pump being connected to a tenth end of the multi-way valve.
4. A thermal management system according to claim 3, further comprising a power supply device, wherein the second end of the motor water pump, the power supply device, and the tenth end of the multiport valve are connected in sequence.
5. The thermal management system of claim 4, further comprising an electric drive, wherein the second end of the electric motor water pump, the power supply, the electric drive, and the tenth end of the multi-way valve are connected in sequence.
6. The thermal management system of claim 1, wherein the compressor is an electric compressor.
7. The thermal management system of claim 1, wherein the first expansion valve and the second expansion valve are electronic expansion valves.
8. The thermal management system of claim 1, further comprising a check valve having a first end connected to a second end of the outdoor condenser and a second end connected to a first end of the second expansion valve.
9. The thermal management system of claim 8, further comprising a reservoir, a first end of the reservoir connected to a second end of the outdoor condenser, a second end of the reservoir connected to a first end of the one-way valve.
10. An electric vehicle comprising a thermal management system according to any one of claims 1 to 9.
CN202211101582.3A 2022-09-09 2022-09-09 Thermal management system and electric vehicle Pending CN116039322A (en)

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Application Number Priority Date Filing Date Title
CN202211101582.3A CN116039322A (en) 2022-09-09 2022-09-09 Thermal management system and electric vehicle

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117239294A (en) * 2023-11-10 2023-12-15 广汽埃安新能源汽车股份有限公司 Electric vehicle thermal management system and management method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117239294A (en) * 2023-11-10 2023-12-15 广汽埃安新能源汽车股份有限公司 Electric vehicle thermal management system and management method thereof
CN117239294B (en) * 2023-11-10 2024-02-20 广汽埃安新能源汽车股份有限公司 Electric vehicle thermal management system and management method thereof

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