CN114905925A - Electric automobile thermal management system and electric automobile - Google Patents

Electric automobile thermal management system and electric automobile Download PDF

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Publication number
CN114905925A
CN114905925A CN202210582731.6A CN202210582731A CN114905925A CN 114905925 A CN114905925 A CN 114905925A CN 202210582731 A CN202210582731 A CN 202210582731A CN 114905925 A CN114905925 A CN 114905925A
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CN
China
Prior art keywords
heat exchanger
works
loop
opened
water
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Pending
Application number
CN202210582731.6A
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Chinese (zh)
Inventor
张洁
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.)
SAIC General Motors Corp Ltd
Pan Asia Technical Automotive Center Co Ltd
Original Assignee
SAIC General Motors Corp Ltd
Pan Asia Technical Automotive Center Co Ltd
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Publication date
Application filed by SAIC General Motors Corp Ltd, Pan Asia Technical Automotive Center Co Ltd filed Critical SAIC General Motors Corp Ltd
Priority to CN202210582731.6A priority Critical patent/CN114905925A/en
Publication of CN114905925A publication Critical patent/CN114905925A/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
    • B60H1/00357—Air-conditioning arrangements specially adapted for particular vehicles
    • B60H1/00385—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
    • 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
    • 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
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/66—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
    • B60H2001/00307—Component temperature regulation using a liquid flow
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • 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

Abstract

The invention discloses an electric automobile heat management system and an electric automobile, which comprise a refrigerant loop, a water heating loop for heating a power battery and/or a warm air core body and a water cooling loop for cooling the power battery and/or an electrical element, wherein a first heat exchanger is connected between the refrigerant loop and the water heating loop, a second heat exchanger is connected between the refrigerant loop and the water cooling loop, the heat of the first heat exchanger is used for the water heating loop, the heat of the second heat exchanger is used for the water cooling loop, the energy utilization rate is high, and the system integration level is high.

Description

Electric automobile thermal management system and electric automobile
Technical Field
The invention relates to the technical field of thermal management systems, in particular to an electric automobile thermal management system and an electric automobile.
Background
The thermal management system of the electric automobile is used for managing heat and comprises an air conditioning loop, a battery cooling loop, an electric appliance cooling loop, a battery heating loop, a warm air heating loop and the like. The air conditioning loop is a refrigerant loop, the battery cooling loop and the electric appliance cooling loop are water cooling loops, and the battery heating loop and the warm air heating loop are water heating loops.
In the prior art, a refrigerant circuit, a water heating circuit and a water cooling circuit are independent from each other, and an improvement in integration level is yet to be achieved.
Disclosure of Invention
The invention aims to provide an electric automobile thermal management system with high integration level and an electric automobile.
The technical scheme of the invention provides an electric automobile heat management system which comprises a refrigerant loop, a water heating loop and a water cooling loop, wherein the water heating loop is used for heating a power battery and/or a warm air core body, and the water cooling loop is used for cooling the power battery and/or electrical elements;
the refrigerant loop is provided with a compressor, a stop valve component, a condensing heat exchanger component, an expansion valve component, an evaporating heat exchanger component and a liquid storage tank which are sequentially connected in series;
the stop valve assembly comprises a first stop valve and a second stop valve which are connected in parallel, the condensing heat exchanger assembly comprises a condenser and a first heat exchanger which are connected in parallel, the first stop valve is connected with the condenser in series, and the second stop valve is connected with the first heat exchanger in series;
the expansion valve assembly comprises a first expansion valve and a second expansion valve which are connected in parallel, the evaporation heat exchanger assembly comprises an evaporator and a second heat exchanger which are connected in parallel, the first expansion valve is connected with the evaporator in series, and the second expansion valve is connected with the second heat exchanger in series;
the water heating loop is provided with a first water pump, a heater and a first control valve;
the first water pump, the heater, the first control valve, the power battery and the first heater are sequentially connected in series to form a battery heating loop;
the first water pump, the heater, the first control valve, the warm air core body and the first heater are sequentially connected in series to form a core body heating loop;
the water cooling loop is provided with a second water pump and a second control valve;
the second water pump, the second control valve, the power battery and the second heat exchanger are sequentially connected in series to form a battery cooling loop;
the second water pump, the second control valve, the electrical element and the second heat exchanger are sequentially connected in series to form an electrical appliance cooling loop.
In one optional technical scheme, when the air conditioner refrigerates:
the compressor operates, the first stop valve is opened, the condenser operates, the first expansion valve operates, and the evaporator operates.
In one optional technical scheme, when the power battery and/or the electrical element are cooled, the following steps are carried out:
the compressor works, the first stop valve is opened, the condenser works, the second expansion valve works, the second heat exchanger works, the second water pump works, the second control valve controls the battery cooling loop and/or the electrical appliance cooling loop to be opened, and the water cooling loop exchanges heat with the second heat exchanger.
In one optional technical scheme, when an air conditioner refrigerates and cools the power battery and/or the electrical element:
the compressor works, the first stop valve is opened, the condenser works, the first expansion valve works, the second expansion valve works, the evaporator works, the second heat exchanger works, the second water pump works, the second control valve controls the battery cooling loop and/or the electric appliance cooling loop to be opened, and the water cooling loop exchanges heat with the second heat exchanger.
In one optional technical scheme, when the power battery and/or the warm air core body are heated, the power battery and/or the warm air core body are/is heated:
the first water pump works, the heater works, and the first control valve controls the battery heating loop and/or the core heating loop to be opened.
In one optional technical scheme, when the warm air core body is heated and the power battery and/or the electrical element are cooled, the following steps are carried out:
the compressor works, the second stop valve is opened, the first heat exchanger works, the second expansion valve is opened, and the second heat exchanger works;
the first water pump is started, the heater works, and the first control valve controls the core heating loop to be started and controls the water heating loop to exchange heat with the first heat exchanger;
the second water pump is started, the second control valve controls the battery cooling loop and/or the electrical appliance cooling loop to be started, and the water cooling loop exchanges heat with the second heat exchanger.
In one optional technical scheme, when the electrical element is cooled and the power battery and/or the warm air core body are heated, the following steps are carried out:
the compressor works, the second stop valve is opened, the first heat exchanger works, the second expansion valve is opened, and the second heat exchanger works;
the first water pump is started, the heater works, the first control valve controls the battery heating loop and the core heating loop to be started, and the water heating loop exchanges heat with the first heat exchanger;
and the second water pump is started, the second control valve controls the electric appliance cooling loop to be started, and the water cooling loop exchanges heat with the second heat exchanger.
In one optional technical scheme, when the glass is demisted:
the compressor works, the second stop valve is opened, the first heat exchanger works, the first electronic expansion valve is opened, and the evaporator works;
the first water pump is started, the heater works, the first control valve controls the core body heating loop to be started, and the water heating loop exchanges heat with the first heat exchanger.
In one optional technical scheme, when demisting glass and cooling the power battery and/or the electrical element:
the compressor works, the second stop valve is opened, the first heat exchanger works, the first electronic expansion valve is opened, the second electronic expansion valve is opened, the evaporator works and the second heat exchanger works;
the first water pump works, the heater works, the first control valve controls the core heating loop to be opened, and the water heating loop exchanges heat with the first heat exchanger;
the second water pump works, the second control valve controls the battery cooling loop and/or the electrical appliance cooling loop to be opened, and the water cooling loop exchanges heat with the second heat exchanger.
In one optional technical scheme, when demisting glass and heating the power battery:
the compressor works, the second stop valve is opened, the first heat exchanger works, the first electronic expansion valve is opened, and the evaporator works;
the first water pump is started, the heater works, the first control valve controls the battery heating loop and the core heating loop to be started, and the water heating loop exchanges heat with the first heat exchanger.
In one optional technical scheme, when demisting glass, heating the power battery and cooling the electrical element:
the compressor works, the second stop valve is opened, the first heat exchanger works, the first electronic expansion valve is opened, the second electronic expansion valve is opened, the evaporator works and the second heat exchanger works;
the first water pump is started, the heater works, the first control valve controls the battery heating loop and the core heating loop to be started, and the water heating loop exchanges heat with the first heat exchanger;
and the second water pump is started, the second control valve controls the electric appliance cooling loop to be started, and the water cooling loop exchanges heat with the second heat exchanger.
In one optional aspect, the heater is a PTC heater.
In an alternative solution, the condenser, the evaporator and the warm air core are respectively provided with a blower.
The technical scheme of the invention also provides an electric automobile which comprises the electric automobile thermal management system in any one of the technical schemes.
By adopting the technical scheme, the method has the following beneficial effects:
according to the electric automobile heat management system and the electric automobile, the first heat exchanger is connected between the refrigerant loop and the water heating loop, the second heat exchanger is connected between the refrigerant loop and the water cooling loop, heat of the first heat exchanger is used for the water heating loop, heat of the second heat exchanger is used for the water cooling loop, the energy utilization rate is high, and the system integration level is high.
Drawings
The disclosure of the present invention will become more readily understood by reference to the drawings. It should be understood that: these drawings are for illustrative purposes only and are not intended to limit the scope of the present disclosure. In the figure:
fig. 1 is a schematic view of an electric vehicle thermal management system according to an embodiment of the present invention.
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
As shown in fig. 1, an embodiment of the present invention provides an electric vehicle thermal management system, which includes a refrigerant circuit 1, a water heating circuit 2 for heating a power battery 14 and/or a warm air core 15, and a water cooling circuit 3 for cooling the power battery 14 and/or an electrical component 18.
The refrigerant loop 1 is provided with a compressor 4, a stop valve component 5, a condensation heat exchanger component 6, an expansion valve component 7, an evaporation heat exchanger component 8 and a liquid storage tank 9 which are connected in series in sequence.
The shutoff valve assembly 5 comprises a first shutoff valve 51 and a second shutoff valve 52 connected in parallel, and the condensing heat exchanger assembly 6 comprises a condenser 61 and a first heat exchanger 62 connected in parallel, wherein the first shutoff valve 51 is connected in series with the condenser 61, and the second shutoff valve 52 is connected in series with the first heat exchanger 62.
The expansion valve assembly 7 comprises a first expansion valve 71 and a second expansion valve 72 connected in parallel, and the evaporative heat exchanger assembly 8 comprises an evaporator 81 and a second heat exchanger 82 connected in parallel, wherein the first expansion valve 71 is connected in series with the evaporator 81, and the second expansion valve 72 is connected in series with the second heat exchanger 82.
The water heating circuit 2 is provided with a first water pump 11, a heater 12 and a first control valve 13.
The first water pump 11, the heater 12, the first control valve 13, the power battery 14 and the first heater 12 are sequentially connected in series to form a battery heating loop.
The first water pump 11, the heater 12, the first control valve 13, the warm air core 15 and the first heater 12 are sequentially connected in series to form a core heating loop.
The water cooling circuit 3 is provided with a second water pump 16 and a second control valve 17.
The second water pump 16, the second control valve 17, the power battery 14 and the second heat exchanger 82 are sequentially connected in series to form a battery cooling loop.
The second water pump 16, the second control valve 17, the electrical element 18 and the second heat exchanger 82 are sequentially connected in series to form an electrical cooling loop.
The electric automobile heat management system provided by the invention comprises a refrigerant circuit 1, a water heating circuit 2 and a water cooling circuit 3. The water heating circuit 2 is used for heating the power battery 14 and/or the warm air core 15. The water cooling circuit 3 is used to cool the power cell 14 and/or the electrical components 18.
The power battery 14 is a power unit of the electric vehicle, and the power battery 14 needs to be cooled when the heat quantity is high, and needs to be heated when the temperature of the power battery 14 is low, so as to maintain the performance of the power battery 14. The warm air core 15 is a heat exchanger for supplying warm air to the passenger compartment.
The electrical component 18 includes a charge control unit 181, an auxiliary power supply unit 182, an electric drive unit 183, and the like, which are connected in series in this order. The charging control unit 181, the auxiliary power supply unit 182, and the electric drive unit 183 are all common electrical components 18 in an electric vehicle, and generate heat during operation, and thus need to be cooled.
The refrigerant loop 1 is an air-conditioning loop and comprises a compressor 4, a stop valve assembly 5, a condensation heat exchanger assembly 6, an expansion valve assembly 7, an evaporation heat exchanger assembly 8 and a liquid storage tank 9 which are sequentially connected in series.
The shutoff valve assembly 5 includes a first shutoff valve 51 and a second shutoff valve 52, and the first shutoff valve 51 and the second shutoff valve 52 are arranged in parallel. The condensing heat exchanger assembly 6 comprises a condenser 61 and a first heat exchanger 62, the condenser 61 and the first heat exchanger 62 being arranged in parallel. The first cut-off valve 51 is connected in series with the condenser 61, and the second cut-off valve 52 is connected in series with the first heat exchanger 62.
The condenser 61 is used for air conditioning and cooling, and the temperature of the condenser 61 is raised. The first heat exchanger 62 is also a kind of condenser when in operation, and the first heat exchanger 62 dissipates heat when in operation, and therefore can exchange heat with the water heating circuit 2 to make full use of the heat in the refrigerant circuit 1.
The expansion valve assembly 7 includes a first expansion valve 71 and a second expansion valve 72, and the first expansion valve 71 and the second expansion valve 72 are arranged in parallel. The evaporative heat exchanger assembly 8 includes an evaporator 81 and a second heat exchanger 82, the evaporator 81 and the second heat exchanger 82 being arranged in parallel. The first expansion valve 71 is connected in series with the evaporator 81, and the second expansion valve 72 is connected in series with the second heat exchanger 82.
The evaporator 81 is used for air conditioning and cooling, and the evaporator 81 is cooled. The second heat exchanger 82 is also an evaporator when in operation, and the second heat exchanger 82 is cooled when in operation, so that heat can be exchanged with the water cooling circuit 3 to fully utilize the cold energy in the refrigerant circuit 1.
The water heating loop 2 comprises a battery heating loop for heating the power battery 14 and a core heating loop for heating the warm air core 15.
The water heating loop 2 comprises a first water pump 11, a heater 12, a first control valve 13, a power battery 14 and a warm air core body 15. The first control valve 13 is a proportional valve that controls the on and off of the battery heating circuit and the core heating circuit and the water flow rate.
The first water pump 11, the heater 12, the first control valve 13, the power battery 14 and the first heater 12 are sequentially connected in series to form a battery heating loop. The warm air core body 15 is connected with the power battery 14 in parallel, the liquid inlet end of the warm air core body 15 is connected with the first control valve 13, and the liquid outlet end of the warm air core body 15 is connected with the first heater 12. The first water pump 11, the heater 12, the first control valve 13, the warm air core 15 and the first heater 12 are sequentially connected in series to form a core heating loop.
The water cooling circuit 3 includes a battery cooling circuit for cooling the power battery 14 and an appliance cooling circuit for cooling the electrical components 18.
The water cooling loop 3 comprises a second water pump 16, a second control valve 17, a power battery 14 and an electrical element 18. The second control valve 17 is a proportional valve which controls the on and off of the battery cooling circuit and the appliance cooling circuit and the water flow rate.
The second water pump 16, the second control valve 17, the power battery 14 and the second heat exchanger 82 are sequentially connected in series to form a battery cooling loop. The electrical element 18 is connected with the power battery 14 in parallel, the liquid inlet end of the electrical element 18 is connected with the second control valve 17, and the liquid outlet end of the electrical element 18 is connected with the second heat exchanger 82. The second water pump 16, the second control valve 17, the electrical element 18 and the second heat exchanger 82 are sequentially connected in series to form an electrical cooling loop.
Therefore, according to the electric automobile heat management system provided by the invention, the first heat exchanger 62 is connected between the refrigerant circuit 1 and the water heating circuit 2, the second heat exchanger 82 is connected between the refrigerant circuit 1 and the water cooling circuit 3, the heat of the first heat exchanger 62 is used for the water heating circuit 2, and the heat of the second heat exchanger 82 is used for the water cooling circuit 3, so that the energy utilization rate is high, and the system integration level is high.
In one embodiment, as shown in fig. 1, when the air conditioner is refrigerating: the compressor 4 is operated, the first stop valve 51 is opened, the condenser 61 is operated, the first expansion valve 71 is operated, and the evaporator 81 is operated.
When the user turns on the air conditioner, the refrigerant circulates through the compressor 4, the first cut-off valve 51, the condenser 61, the first expansion valve 71, the evaporator 81, and the receiver 9. The condenser 61 is warmed up, and the evaporator 81 cools down the cold energy released from the evaporator 81 to cool down the passenger compartment.
In one embodiment, as shown in fig. 1, upon cooling of the power cell 14 and/or the electrical components 18:
the compressor 4 works, the first stop valve 51 is opened, the condenser 61 works, the second expansion valve 72 works, the second heat exchanger 82 works, the second water pump 16 works, the second control valve 17 controls the battery cooling circuit and/or the electric appliance cooling circuit to be opened, and the water cooling circuit 3 exchanges heat with the second heat exchanger 82.
When the power battery 14 and/or the electrical element 18 are cooled, the evaporator 81 does not work, the second heat exchanger 82 works, the water cooling loop 3 exchanges heat with the second heat exchanger 82, and the cold energy released by the second heat exchanger 82 is used for cooling the water in the water cooling loop 3 so as to cool the power battery 14 and/or the electrical element 18.
In one embodiment, as shown in fig. 1, when the air conditioner is cooling and cooling the power battery 14 and/or the electrical components 18:
the compressor 4 works, the first stop valve 51 is opened, the condenser 61 works, the first expansion valve 71 works, the second expansion valve 72 works, the evaporator 81 works, the second heat exchanger 82 works, the second water pump 16 works, the second control valve 17 controls the battery cooling loop and/or the electric appliance cooling loop to be opened, and the water cooling loop 3 exchanges heat with the second heat exchanger 82.
When the air conditioner is used for cooling and the power battery 14 and/or the electrical component 18 are cooled, the evaporator 81 and the second heat exchanger 82 are both operated, the evaporator 81 is used for cooling the passenger compartment, and the second heat exchanger 82 is used for cooling the water in the water cooling circuit 3.
In one embodiment, as shown in fig. 1, when heating power battery 14 and/or warm air core 15:
the first water pump 11 works, the heater 12 works, and the first control valve 13 controls the battery heating circuit and/or the core heating circuit to be opened.
When the power battery 14 and/or the warm air core 15 need to be heated, the heater 12 is used for heating so as to raise the water temperature in the water heating loop 2, and therefore the power battery 14 and/or the warm air core 15 are heated.
In one embodiment, as shown in fig. 1, when the warm air core 15 is heated and the power battery 14 and/or the electrical components 18 are cooled:
the compressor 4 is operated, the second cut-off valve 52 is opened, the first heat exchanger 62 is operated, the second expansion valve 72 is opened, and the second heat exchanger 82 is operated.
The first water pump 11 is started, the heater 12 works, the first control valve 13 controls the core heating loop to be started, and the water heating loop 2 exchanges heat with the first heat exchanger 62.
The second water pump 16 is started, the second control valve 17 controls the battery cooling circuit and/or the electrical appliance cooling circuit to be started, and the water cooling circuit 3 exchanges heat with the second heat exchanger 82.
When the warm air core 15 is heated and the power battery 14 and/or the electrical component 18 are simultaneously cooled, the first heat exchanger 62 and the second heat exchanger 82 are simultaneously operated. The heat generated by the first heat exchanger 62 is used in the water heating circuit 2 to reduce the load on the heater 12, which is beneficial to saving electricity. The hot water heated by the heater 12 is delivered to the warm air core 15 to raise the temperature. The cold energy generated by the second heat exchanger 82 is used in the water cooling loop 3 to cool down the power battery 14 and/or the electrical components 18.
In one embodiment, as shown in fig. 1, when electrical component 18 is cooled and power battery 14 and/or warm air core 15 is heated:
the compressor 4 is operated, the second cut-off valve 52 is opened, the first heat exchanger 62 is operated, the second expansion valve 72 is opened, and the second heat exchanger 82 is operated.
The first water pump 11 is started, the heater 12 works, the first control valve 13 controls the battery heating loop and the core heating loop to be started, and the water heating loop 2 exchanges heat with the first heat exchanger 62.
The second water pump 16 is started, the second control valve 17 controls the electric appliance cooling loop to be started, and the water cooling loop 3 exchanges heat with the second heat exchanger 82.
When the electrical component 18 is cooled and the power battery 14 and/or the warm air core 15 are simultaneously heated, the first heat exchanger 62 and the second heat exchanger 82 are operated. The heat generated by the first heat exchanger 62 is used in the water heating circuit 2 to reduce the load on the heater 12, which is beneficial to saving electricity. The hot water heated by the heater 12 is sent to the power battery 14 and/or the warm air core 15 to raise the temperature.
The cold produced by the second heat exchanger 82 is used in the water cooling circuit 3 for cooling the electrical components 18.
In one embodiment, as shown in FIG. 1, when defogging the glass:
the compressor 4 is operated, the second cut-off valve 52 is opened, the first heat exchanger 62 is operated, the first electronic expansion valve is opened, and the evaporator 81 is operated.
The first water pump 11 is started, the heater 12 works, the first control valve 13 controls the core heating loop to be started, and the water heating loop 2 exchanges heat with the first heat exchanger 62.
When defogging of the glass is required, the air conditioner is turned on, and the first heat exchanger 62 and the evaporator 81 are operated. The evaporator 81 reduces the temperature and reduces the humidity in the air, which is beneficial to quick demisting. The heat generated by the first heat exchanger 62 is used in the water heating circuit 2 to reduce the load on the heater 12, which is beneficial to saving electricity. The hot water heated by the heater 12 is conveyed to the warm air core body 15 to increase the temperature of the air to a proper temperature, so that the discomfort of a human body caused by the over-low air outlet temperature is avoided.
In one embodiment, as shown in FIG. 1, while defogging the glass and cooling the power cell 14 and/or electrical components 18:
the compressor 4 is operated, the second cut-off valve 52 is opened, the first heat exchanger 62 is operated, the first electronic expansion valve is opened, the second electronic expansion valve is opened, the evaporator 81 is operated, and the second heat exchanger 82 is operated.
The first water pump 11 works, the heater 12 works, the first control valve 13 controls the core heating loop to be opened, and the water heating loop 2 exchanges heat with the first heat exchanger 62.
The second water pump 16 works, the second control valve 17 controls the battery cooling circuit and/or the electrical appliance cooling circuit to be started, and the water cooling circuit 3 exchanges heat with the second heat exchanger 82.
The first heat exchanger 62, the evaporator 81 and the second heat exchanger 82 are operated simultaneously while defogging the glass and simultaneously cooling the power cell 14 and/or the electrical components 18. The second heat exchanger 82 is used to cool the water in the water cooling circuit 3 to cool the power battery 14 and/or the electrical components 18.
In one embodiment, as shown in fig. 1, when defogging the glass and heating the power cell 14:
the compressor 4 is operated, the second cut-off valve 52 is opened, the first heat exchanger 62 is operated, the first electronic expansion valve is opened, and the evaporator 81 is operated.
The first water pump 11 is started, the heater 12 works, the first control valve 13 controls the battery heating loop and the core heating loop to be started, and the water heating loop 2 exchanges heat with the first heat exchanger 62.
When defogging the glass and simultaneously heating the power battery 14, the first heat exchanger 62, the evaporator 81, and the heater 12 are simultaneously operated to heat the power battery 14 in addition to the warm air core 15.
In one embodiment, as shown in FIG. 1, while defogging the glass, heating the power cell 14, and cooling the electrical components 18:
the compressor 4 is operated, the second stop valve 52 is opened, the first heat exchanger 62 is operated, the first electronic expansion valve is opened, the second electronic expansion valve is opened, the evaporator 81 is operated, and the second heat exchanger 82 is operated.
The first water pump 11 is started, the heater 12 works, the first control valve 13 controls the battery heating loop and the core heating loop to be started, and the water heating loop 2 exchanges heat with the first heat exchanger 62.
The second water pump 16 is started, the second control valve 17 controls the electric appliance cooling loop to be started, and the water cooling loop 3 exchanges heat with the second heat exchanger 82.
The first heat exchanger 62, the evaporator 81, the second heat exchanger 82, and the heater 12 operate simultaneously while defogging the glass, heating the power cell 14, and cooling the electrical components 18. The first heat exchanger 62 exchanges heat to the water heating circuit 2 to reduce the load of the heater 12, which is advantageous for saving electricity. The hot water heated by the heater 12 is supplied to the power battery 14 and the heater core 15. The second heat exchanger 82 is used for cooling down the water in the water cooling circuit 3 to cool down the electrical components 18.
In one embodiment, the heater 12 is a PTC heater, which provides good heating.
In one embodiment, as shown in fig. 1, the condenser 61, the evaporator 81 and the warm air core 15 are respectively provided with the blower 10, which facilitates the rapid heat exchange between the condenser 61, the evaporator 81 and the warm air core 15 and the ambient air.
The embodiment of the invention provides an electric automobile which comprises the electric automobile thermal management system in any one of the embodiments.
According to the requirements, the above technical schemes can be combined to achieve the best technical effect.
The foregoing is considered as illustrative only of the principles and preferred embodiments of the invention. It should be noted that, for those skilled in the art, several other modifications can be made on the basis of the principle of the present invention, and the protection scope of the present invention should be regarded.

Claims (14)

1. The thermal management system of the electric automobile is characterized by comprising a refrigerant loop, a water heating loop for heating a power battery and/or a warm air core body and a water cooling loop for cooling the power battery and/or electrical elements;
the refrigerant loop is provided with a compressor, a stop valve component, a condensing heat exchanger component, an expansion valve component, an evaporating heat exchanger component and a liquid storage tank which are sequentially connected in series;
the stop valve assembly comprises a first stop valve and a second stop valve which are connected in parallel, the condensing heat exchanger assembly comprises a condenser and a first heat exchanger which are connected in parallel, the first stop valve is connected with the condenser in series, and the second stop valve is connected with the first heat exchanger in series;
the expansion valve assembly comprises a first expansion valve and a second expansion valve which are connected in parallel, the evaporation heat exchanger assembly comprises an evaporator and a second heat exchanger which are connected in parallel, the first expansion valve is connected with the evaporator in series, and the second expansion valve is connected with the second heat exchanger in series;
the water heating loop is provided with a first water pump, a heater and a first control valve;
the first water pump, the heater, the first control valve, the power battery and the first heater are sequentially connected in series to form a battery heating loop;
the first water pump, the heater, the first control valve, the warm air core body and the first heater are sequentially connected in series to form a core body heating loop;
the water cooling loop is provided with a second water pump and a second control valve;
the second water pump, the second control valve, the power battery and the second heat exchanger are sequentially connected in series to form a battery cooling loop;
the second water pump, the second control valve, the electrical element and the second heat exchanger are sequentially connected in series to form an electrical appliance cooling loop.
2. The electric vehicle thermal management system of claim 1, wherein when the air conditioner is cooling:
the compressor operates, the first stop valve is opened, the condenser operates, the first expansion valve operates, and the evaporator operates.
3. The thermal management system of an electric vehicle of claim 1, wherein, when cooling the power battery and/or the electrical component:
the compressor works, the first stop valve is opened, the condenser works, the second expansion valve works, the second heat exchanger works, the second water pump works, the second control valve controls the battery cooling loop and/or the electrical appliance cooling loop to be opened, and the water cooling loop exchanges heat with the second heat exchanger.
4. The thermal management system of an electric vehicle of claim 1,
when the air conditioner is used for refrigerating and cooling the power battery and/or the electrical element:
the compressor works, the first stop valve is opened, the condenser works, the first expansion valve works, the second expansion valve works, the evaporator works, the second heat exchanger works, the second water pump works, the second control valve controls the battery cooling loop and/or the electric appliance cooling loop to be opened, and the water cooling loop exchanges heat with the second heat exchanger.
5. The thermal management system of any one of claims 1-4, wherein when heating the power battery and/or the warm air core:
the first water pump works, the heater works, and the first control valve controls the battery heating loop and/or the core heating loop to be opened.
6. The thermal management system of any one of claims 1-4, wherein, when the warm air core is heated and the power battery and/or the electrical component is cooled:
the compressor works, the second stop valve is opened, the first heat exchanger works, the second expansion valve is opened, and the second heat exchanger works;
the first water pump is started, the heater works, and the first control valve controls the core heating loop to be started and controls the water heating loop to exchange heat with the first heat exchanger;
the second water pump is started, the second control valve controls the battery cooling loop and/or the electrical appliance cooling loop to be started, and the water cooling loop exchanges heat with the second heat exchanger.
7. The thermal management system of any one of claims 1-4, wherein, when the electrical component is cooled and the power battery and/or the warm air core is heated:
the compressor works, the second stop valve is opened, the first heat exchanger works, the second expansion valve is opened, and the second heat exchanger works;
the first water pump is started, the heater works, the first control valve controls the battery heating loop and the core heating loop to be started, and the water heating loop exchanges heat with the first heat exchanger;
and the second water pump is started, the second control valve controls the electric appliance cooling loop to be started, and the water cooling loop exchanges heat with the second heat exchanger.
8. The thermal management system of an electric vehicle of any of claims 1-4, wherein, when defogging the glass:
the compressor works, the second stop valve is opened, the first heat exchanger works, the first electronic expansion valve is opened, and the evaporator works;
the first water pump is started, the heater works, the first control valve controls the core body heating loop to be started, and the water heating loop exchanges heat with the first heat exchanger.
9. The thermal management system of an electric vehicle according to any one of claims 1-4, wherein, when defogging glass and cooling of said power battery and/or said electrical components:
the compressor works, the second stop valve is opened, the first heat exchanger works, the first electronic expansion valve is opened, the second electronic expansion valve is opened, the evaporator works and the second heat exchanger works;
the first water pump works, the heater works, the first control valve controls the core heating loop to be opened, and the water heating loop exchanges heat with the first heat exchanger;
the second water pump works, the second control valve controls the battery cooling loop and/or the electrical appliance cooling loop to be opened, and the water cooling loop exchanges heat with the second heat exchanger.
10. The thermal management system of an electric vehicle of any of claims 1-4, wherein, while defogging glass and heating the power cell:
the compressor works, the second stop valve is opened, the first heat exchanger works, the first electronic expansion valve is opened, and the evaporator works;
the first water pump is started, the heater works, the first control valve controls the battery heating loop and the core heating loop to be started, and the water heating loop exchanges heat with the first heat exchanger.
11. The thermal management system of an electric vehicle of any of claims 1-4, wherein, while defogging glass, heating the power battery, and cooling the electrical components:
the compressor works, the second stop valve is opened, the first heat exchanger works, the first electronic expansion valve is opened, the second electronic expansion valve is opened, the evaporator works and the second heat exchanger works;
the first water pump is started, the heater works, the first control valve controls the battery heating loop and the core heating loop to be started, and the water heating loop exchanges heat with the first heat exchanger;
and the second water pump is started, the second control valve controls the electric appliance cooling loop to be started, and the water cooling loop exchanges heat with the second heat exchanger.
12. The thermal management system of an electric vehicle of claim 1, wherein the heater is a PCT heater.
13. The thermal management system of an electric vehicle of claim 1, wherein the condenser, the evaporator and the warm air core are each configured with a blower.
14. An electric vehicle comprising the electric vehicle thermal management system of any of claims 1-13.
CN202210582731.6A 2022-05-26 2022-05-26 Electric automobile thermal management system and electric automobile Pending CN114905925A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210582731.6A CN114905925A (en) 2022-05-26 2022-05-26 Electric automobile thermal management system and electric automobile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210582731.6A CN114905925A (en) 2022-05-26 2022-05-26 Electric automobile thermal management system and electric automobile

Publications (1)

Publication Number Publication Date
CN114905925A true CN114905925A (en) 2022-08-16

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210582731.6A Pending CN114905925A (en) 2022-05-26 2022-05-26 Electric automobile thermal management system and electric automobile

Country Status (1)

Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024065221A1 (en) * 2022-09-27 2024-04-04 华为技术有限公司 Thermal management system and vehicle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024065221A1 (en) * 2022-09-27 2024-04-04 华为技术有限公司 Thermal management system and vehicle

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