CN112046236A - Thermal management system, thermal management method and electric automobile - Google Patents

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

Info

Publication number
CN112046236A
CN112046236A CN202010817167.2A CN202010817167A CN112046236A CN 112046236 A CN112046236 A CN 112046236A CN 202010817167 A CN202010817167 A CN 202010817167A CN 112046236 A CN112046236 A CN 112046236A
Authority
CN
China
Prior art keywords
branch
battery
communicated
way valve
thermal management
Prior art date
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
CN202010817167.2A
Other languages
Chinese (zh)
Inventor
赵桓
于艳翠
沈军
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.)
Gree Electric Appliances Inc of Zhuhai
Original Assignee
Gree Electric Appliances Inc of Zhuhai
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Gree Electric Appliances Inc of Zhuhai filed Critical Gree Electric Appliances Inc of Zhuhai
Priority to CN202010817167.2A priority Critical patent/CN112046236A/en
Publication of CN112046236A publication Critical patent/CN112046236A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • B60H1/00321—Heat exchangers for air-conditioning devices
    • B60H1/00342—Heat exchangers for air-conditioning devices of the liquid-liquid type
    • 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
    • B60H1/00507—Details, e.g. mounting arrangements, desaeration devices
    • B60H1/00557—Details of ducts or cables
    • B60H1/00571—Details of ducts or cables of liquid ducts, e.g. for coolant liquids or refrigerants
    • 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
    • B60H1/04—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant from cooling liquid of the plant
    • B60H1/06—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant from cooling liquid of the plant directly from main radiator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
    • B60K11/04—Arrangement or mounting of radiators, radiator shutters, or radiator blinds
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/615—Heating or keeping warm
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/63—Control systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/66—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells
    • H01M10/663—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells the system being an air-conditioner or an engine
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K2001/003—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units
    • B60K2001/005—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units the electric storage means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K2001/003—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units
    • B60K2001/006—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units the electric motors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Abstract

The application provides a thermal management system, a thermal management method and an electric automobile. The air-conditioning refrigerant loop comprises a first heat exchanger and an intermediate heat exchanger, the secondary refrigerant loop comprises a secondary refrigerant heat exchange pipeline, an adjusting branch, a battery branch, a motor branch and an automobile outer branch, the automobile outer branch comprises a first pipeline and a second pipeline which are connected in parallel, the secondary refrigerant heat exchange pipeline is in heat exchange connection with the first heat exchanger, the first pipeline is provided with an automobile outer heat exchanger, the first end of the secondary refrigerant heat exchange pipeline can be selectively communicated with the first end of the first pipeline or the first end of the second pipeline, the second end of the secondary refrigerant heat exchange pipeline can be selectively communicated with the first end of the adjusting branch or the first end of the motor branch, and the second ends of the adjusting branch, the battery branch, the motor branch and the automobile outer branch are connected through a first four-way valve. According to the heat management system, the heat energy of the whole vehicle can be reasonably distributed, the energy utilization rate of the whole vehicle is improved, and the endurance mileage is improved.

Description

Thermal management system, thermal management method and electric automobile
Technical Field
The application relates to the technical field of electric automobiles, in particular to a thermal management system, a thermal management method and an electric automobile.
Background
The pure electric vehicle is green and environment-friendly, low in use cost and good in market prospect, and is favored by numerous enterprises. The existing pure electric vehicle has the problems of short endurance mileage and the fundamental reason that the working temperature of the battery influences the charge-discharge capacity and the service life of the battery, and particularly under the condition of lower temperature, the performance is seriously attenuated, and enough electric quantity cannot be output to drive a motor to normally work. Meanwhile, the temperature of the driving motor cannot be too high, the efficiency of the motor is reduced due to the fact that the internal temperature of the motor is too high, and the damage of the motor due to the fact that a coil inside the motor is ablated or even a coil is short-circuited can be caused under severe conditions. On the other hand, the heating capacity of a vehicle air conditioner in the form of an air-source heat pump also decreases as the ambient temperature decreases. Therefore, a set of efficient whole vehicle thermal management system is urgently needed to be developed, so that the whole vehicle thermal management system can reasonably distribute the heat energy of the whole vehicle, improve the energy utilization rate of the whole vehicle and improve the endurance mileage.
Disclosure of Invention
Therefore, the technical problem to be solved by the application is to provide a thermal management system, a thermal management method and an electric automobile, which can reasonably distribute the heat energy of the whole automobile, improve the energy utilization rate of the whole automobile and improve the endurance mileage.
In order to solve the above problems, the present application provides a thermal management system, comprising an air-conditioning refrigerant circuit and a secondary refrigerant circuit, wherein the air-conditioning refrigerant circuit comprises a first heat exchanger and an intermediate heat exchanger, the secondary refrigerant circuit comprises a secondary refrigerant heat exchange pipeline, an adjusting branch, a battery branch, a motor branch and an external branch, the external branch comprises a first pipeline and a second pipeline which are connected in parallel, the secondary refrigerant heat exchange pipeline is in heat exchange connection with the first heat exchanger, the external heat exchanger is arranged on the first pipeline, a first end of the secondary refrigerant heat exchange pipeline can be selectively communicated with a first end of the first pipeline or the second pipeline through a first three-way valve, a second end of the secondary refrigerant heat exchange pipeline can be selectively communicated with a first end of the adjusting branch or the motor branch through a second three-way valve, and second ends of the adjusting branch, the battery branch, the motor branch and the external branch are, the adjusting branch is connected with the battery branch through a heat exchange branch, and the heat exchange branch is in heat exchange connection with the intermediate heat exchanger.
Preferably, a first pump is arranged on the adjusting branch, and the heat exchange branch is connected to a pipeline between the second three-way valve and the first pump.
Preferably, a motor controller and/or a motor are/is arranged on the motor branch, and a second pump is arranged on a pipeline connecting the motor controller and/or the motor with the first four-way valve.
Preferably, a battery assembly is arranged on the battery branch circuit, the heat exchange branch circuit is connected to one end of the battery assembly far away from the first four-way valve,
a first two-way valve is arranged on a pipeline, which is communicated with the second three-way valve, at one end of the battery assembly, which is far away from the first four-way valve; and/or a second two-way valve is arranged on the heat exchange branch.
Preferably, the branch outside the vehicle further comprises an expansion tank, the first pipeline is connected with the first four-way valve after being connected with the second pipeline in parallel, and the expansion tank is arranged on the pipeline between the parallel pipeline and the first four-way valve.
Preferably, the air conditioner refrigerant circuit further comprises a compressor and a second four-way valve, and the compressor, the first heat exchanger and the intermediate heat exchanger are connected with the second four-way valve.
Preferably, the air-conditioning refrigerant circuit further comprises a second heat exchanger, the second heat exchanger is connected with the intermediate heat exchanger in parallel, a branch where the second heat exchanger is located is provided with a first electronic expansion valve, and a branch where the intermediate heat exchanger is located is provided with a second electronic expansion valve.
Preferably, the suction end of the compressor is provided with a gas-liquid separator.
Preferably, when the air-conditioning refrigerant circuit is in a cooling state, the refrigerant flow direction in the intermediate heat exchanger is the same as the refrigerant flow direction, and when the air-conditioning refrigerant circuit is in a heating state, the refrigerant flow direction in the intermediate heat exchanger is opposite to the refrigerant flow direction.
According to another aspect of the application, an electric automobile is provided, which comprises a thermal management system, wherein the thermal management system is the thermal management system.
According to another aspect of the present application, there is provided a thermal management method of the thermal management system, including:
detecting the temperature of the battery;
comparing the detected battery temperature with a preset battery temperature;
and selecting a thermal management mode of the thermal management system according to the comparison result.
Preferably, the step of selecting the thermal management mode of the thermal management system according to the comparison result comprises:
when the temperature of the battery is higher than the preset upper limit of the temperature of the battery, controlling the air conditioner refrigerant loop to be in a refrigeration mode;
controlling a first three-way valve to be communicated with a first pipeline, controlling a second three-way valve to be communicated with a motor branch, controlling an intermediate heat exchanger to be communicated with a battery branch, and controlling the battery branch to be disconnected with the motor branch;
controlling the first four-way valve to enable the adjusting branch to be communicated with the battery branch and the motor branch to be communicated with the branch outside the vehicle;
when the temperature of the battery is lower than the preset lower limit of the temperature of the battery, controlling the air-conditioning refrigerant loop to be in a heating mode;
controlling a first three-way valve to be communicated with a first pipeline, controlling a second three-way valve to be communicated with a motor branch, controlling an intermediate heat exchanger to be communicated with a battery branch, and controlling the battery branch to be disconnected with the motor branch;
and the first four-way valve is controlled, so that the adjusting branch is communicated with the battery branch, and the motor branch is communicated with the vehicle outer branch.
Preferably, the step of selecting the thermal management mode of the thermal management system according to the comparison result comprises:
when the temperature of the battery is higher than the preset upper limit of the temperature of the battery, controlling the air conditioner refrigerant loop to be in a refrigeration mode;
controlling the first three-way valve to be communicated with the second pipeline, controlling the second three-way valve to be communicated with the motor branch, controlling the intermediate heat exchanger to be communicated with the battery branch, and controlling the battery branch to be disconnected with the motor branch;
controlling the first four-way valve to enable the adjusting branch to be communicated with the battery branch and the motor branch to be communicated with the branch outside the vehicle;
when the temperature of the battery is lower than the preset lower limit of the temperature of the battery, controlling the air-conditioning refrigerant loop to be in a heating mode;
controlling the first three-way valve to be communicated with the second pipeline, controlling the second three-way valve to be communicated with the motor branch, controlling the intermediate heat exchanger to be communicated with the battery branch, and controlling the battery branch to be disconnected with the motor branch;
and the first four-way valve is controlled, so that the adjusting branch is communicated with the battery branch, and the motor branch is communicated with the vehicle outer branch.
Preferably, the step of selecting the thermal management mode of the thermal management system according to the comparison result comprises:
when the temperature of the battery is higher than the preset upper limit of the temperature of the battery, controlling a first three-way valve to be communicated with a first pipeline, controlling a second three-way valve to be communicated with an adjusting branch, controlling the intermediate heat exchanger to be disconnected with the battery branch, and controlling the battery branch to be communicated with a motor branch;
and the first four-way valve is controlled, so that the adjusting branch is communicated with the battery branch, and the motor branch is communicated with the vehicle outer branch.
Preferably, the step of selecting the thermal management mode of the thermal management system according to the comparison result comprises:
when the temperature of the battery is higher than the preset upper limit of the temperature of the battery, controlling the first three-way valve to be communicated with the second pipeline, controlling the second three-way valve to be communicated with the adjusting branch, controlling the intermediate heat exchanger to be disconnected with the battery branch, and controlling the battery branch to be communicated with the motor branch;
and the first four-way valve is controlled, so that the adjusting branch is communicated with the battery branch, and the motor branch is communicated with the vehicle outer branch.
Preferably, the step of selecting the thermal management mode of the thermal management system according to the comparison result comprises:
when the temperature of the battery is lower than the preset lower limit of the temperature of the battery, controlling a first three-way valve to be communicated with a first pipeline, controlling a second three-way valve to be communicated with an adjusting branch, controlling an intermediate heat exchanger to be disconnected with a battery branch, and controlling the battery branch to be communicated with a motor branch;
and the first four-way valve is controlled, so that the adjusting branch is communicated with the external branch of the vehicle, and the motor branch is communicated with the battery branch.
The application provides a heat management system, which comprises an air-conditioning refrigerant loop and a secondary refrigerant loop, wherein the air-conditioning refrigerant loop comprises a first heat exchanger and an intermediate heat exchanger, the secondary refrigerant loop comprises a secondary refrigerant heat exchange pipeline, an adjusting branch, a battery branch, a motor branch and an external branch, the external branch comprises a first pipeline and a second pipeline which are connected in parallel, the secondary refrigerant heat exchange pipeline is in heat exchange connection with the first heat exchanger, the first pipeline is provided with an external heat exchanger, the first end of the secondary refrigerant heat exchange pipeline can be selectively communicated with the first end of the first pipeline or the second pipeline through a first three-way valve, the second end of the secondary refrigerant heat exchange pipeline can be selectively communicated with the first end of the adjusting branch or the motor branch through a second three-way valve, the adjusting branch, the battery branch, the motor branch and the second end of the external branch are connected through a first four-way valve, and the adjusting branch, the heat exchange branch is connected with the intermediate heat exchanger in a heat exchange manner. The heat management system of this application, can be integrated air conditioning system, battery heat management system and driving motor cooling system are a whole set of vehicle heat management system, the realization is to the carriage, battery pack, the temperature control of motor etc., make full use of and each partial heat of rational distribution, make battery system and motor system operating temperature keep in the operating temperature scope, vehicle heat distribution is more effective, the energy utilization is more reasonable, can effectively realize the thermal management of whole car, improve whole car energy utilization, promote the continuation of the journey mileage.
Drawings
FIG. 1 is a cycle diagram of a thermal management system according to an embodiment of the present application;
FIG. 2 is a diagram of a first mode of thermal management of a thermal management system according to an embodiment of the present application;
FIG. 3 is a diagram of a second mode of thermal management of the thermal management system of an embodiment of the present application;
FIG. 4 is a diagram of a third mode of thermal management of the thermal management system of an embodiment of the present application;
FIG. 5 is a diagram of a fourth mode of thermal management of the thermal management system of an embodiment of the present application;
fig. 6 is a diagram of a fifth mode of thermal management of the thermal management system according to an embodiment of the present application.
The reference numerals are represented as:
1. a first heat exchanger; 2. an intermediate heat exchanger; 3. a first pipeline; 4. a second pipeline; 5. an exterior heat exchanger; 6. a first three-way valve; 7. a second three-way valve; 8. a first four-way valve; 9. a first pump; 10. a second pump; 11. a motor; 12. a motor controller; 13. a battery assembly; 14. a first two-way valve; 15. a second two-way valve; 16. an expansion tank; 17. a compressor; 18. a second four-way valve; 19. a second heat exchanger; 20. a first electronic expansion valve; 21. a second electronic expansion valve; 22. a gas-liquid separator.
Detailed Description
Referring to fig. 1 to 6 in combination, according to an embodiment of the present application, a thermal management system includes an air-conditioning refrigerant circuit and a secondary refrigerant circuit, the air-conditioning refrigerant circuit includes a first heat exchanger 1 and an intermediate heat exchanger 2, the secondary refrigerant circuit includes a secondary refrigerant heat exchange pipeline, an adjusting branch, a battery branch, a motor branch and an external branch, the external branch includes a first pipeline 3 and a second pipeline 4 connected in parallel, the secondary refrigerant heat exchange pipeline is in heat exchange connection with the first heat exchanger 1, an external heat exchanger 5 is disposed on the first pipeline 3, a first end of the secondary refrigerant heat exchange pipeline can be selectively communicated with a first end of the first pipeline 3 or the second pipeline 4 through a first three-way valve 6, a second end of the secondary refrigerant heat exchange pipeline can be selectively communicated with a first end of the adjusting branch or the motor branch through a second three-way valve 7, and second ends of the adjusting branch, the battery branch, the motor branch and the external branch are connected through a, the adjusting branch is connected with the battery branch through a heat exchange branch, and the heat exchange branch is in heat exchange connection with the intermediate heat exchanger 2.
The heat management system of this application, can be integrated air conditioning system, battery heat management system and driving motor cooling system are a whole set of vehicle heat management system, the realization is to the carriage, battery pack, the temperature control of motor etc., make full use of and each partial heat of rational distribution, make battery system and motor system operating temperature keep in the operating temperature scope, vehicle heat distribution is more effective, the energy utilization is more reasonable, can effectively realize the thermal management of whole car, improve whole car energy utilization, promote the continuation of the journey mileage.
A first pump 9 is arranged on the adjusting branch, and the heat exchange branch is connected on a pipeline between the second three-way valve 7 and the first pump 9. In the embodiment, a refrigerant circulation motor mechanism can be added on the adjusting branch by adding the first pump 9, and the first pump 9 is used for providing circulation power for the secondary refrigerant on the adjusting branch.
A motor controller 12 and/or a motor 11 are/is arranged on the motor branch, and a second pump 10 is arranged on a pipeline connecting the motor controller 12 and/or the motor 11 with the first four-way valve 8. In this embodiment, the motor controller 12 and the motor 11 are disposed in series in the motor branch, and the second pump 10 is disposed in the motor branch to provide circulating power for the coolant disposed in the motor branch.
A battery assembly 13 is arranged on the battery branch circuit, the heat exchange branch circuit is connected to one end, far away from the first four-way valve 8, of the battery assembly 13, and a first two-way valve 14 is arranged on a pipeline, far away from the first four-way valve 8, of the battery assembly 13 and communicated with the second three-way valve 7; and/or a second two-way valve 15 is arranged on the heat exchange branch.
By arranging the first two-way valve 14 on the battery branch, the connection state of the battery branch and the motor branch can be adjusted by controlling the on-off of the first two-way valve 14, and then the secondary refrigerant flow path can be adjusted.
Through set up second two-way valve 15 on the heat transfer branch road, can realize realizing the regulation to the heat transfer branch road intercommunication state between the battery branch road through the break-make of controlling second two-way valve 15, and then realize the regulation to the heat transfer mode of battery branch road. The first two-way valve 14 and the second two-way valve 15 are electromagnetic valves.
The branch circuit outside the vehicle further comprises an expansion water tank 16, the first pipeline 3 is connected with the first four-way valve 8 after being connected with the second pipeline 4 in parallel, and the expansion water tank 16 is arranged on the pipeline between the parallel pipeline and the first four-way valve 8. The expansion water tank 16 can improve the working stability of the secondary refrigerant in the secondary refrigerant loop, stabilize the system pressure and improve the system operation stability.
The air conditioner refrigerant circuit further comprises a compressor 17 and a second four-way valve 18, and the compressor 17, the first heat exchanger 1 and the intermediate heat exchanger 2 are connected with the second four-way valve 18. The second four-way valve 18 is used for realizing the reversing adjustment of the refrigerant flow of the air-conditioning refrigerant loop, thereby realizing the conversion of the refrigeration and heating conditions of the air-conditioning refrigerant loop.
The air-conditioning refrigerant circuit also comprises a second heat exchanger 19, the second heat exchanger 19 is connected with the intermediate heat exchanger 2 in parallel, a branch of the second heat exchanger 19 is provided with a first electronic expansion valve 20, and a branch of the intermediate heat exchanger 2 is provided with a second electronic expansion valve 21. The first electronic expansion valve 20 can control whether the second heat exchanger 19 works or not, and the second electronic expansion valve 21 can control whether the intermediate heat exchanger 2 works or not. By providing the first electronic expansion valve 20 and the second electronic expansion valve 21, the operating state of the intermediate heat exchanger 2 or the second heat exchanger 19 can be adjusted without affecting the operation of the other branch circuits.
In this embodiment, the first heat exchanger 1 is an outdoor heat exchanger of an air-conditioning refrigerant circuit, the second heat exchanger 19 is an indoor heat exchanger of the air-conditioning refrigerant circuit, and the air-conditioning refrigerant circuit mainly realizes a function of adjusting the temperature in the vehicle cabin through the second heat exchanger 19.
The suction side of the compressor 17 is provided with a gas-liquid separator 22.
When the air-conditioning refrigerant circuit is in a refrigerating state, the flow direction of the refrigerant in the intermediate heat exchanger 2 is the same as that of the secondary refrigerant, and when the air-conditioning refrigerant circuit is in a heating state, the flow direction of the refrigerant in the intermediate heat exchanger 2 is opposite to that of the secondary refrigerant, so that the flow direction of the refrigerant and the flow direction of the secondary refrigerant are matched with the working condition of the air-conditioning refrigerant circuit, and the heat exchange efficiency of the refrigerant and the secondary refrigerant is effectively improved.
The coolant is, for example, water or a mixed solution of water and ethylene glycol.
According to an embodiment of the application, the electric automobile comprises a thermal management system, and the thermal management system is the thermal management system.
Referring to fig. 2 to 6 in combination, according to an embodiment of the present application, the thermal management method of the thermal management system includes: detecting the temperature of the battery; comparing the detected battery temperature with a preset battery temperature; and selecting a thermal management mode of the thermal management system according to the comparison result.
This application can select suitable thermal management mode according to the battery temperature and predetermine the relation between the battery temperature to make the heat of carriage, battery and motor can unify to manage, can utilize the difference of operating mode separately to carry out thermal redistribution regulation, realize thermal complementary utilization, realize waste heat utilization, accurate accuse temperature, improve the target of whole car thermal management system efficiency.
The air conditioner refrigerant loop comprises a compressor 17, a first heat exchanger 1, a second heat exchanger 19 and an intermediate heat exchanger 2, wherein a heat exchange medium of the second heat exchanger 19 is a refrigerant and air in a compartment, and a heat exchange medium of the first heat exchanger 1 is a refrigerant and a secondary refrigerant. Starting from the suction port of the compressor 17, the refrigerant flows in the direction of the compressor 17 → the second four-way valve 18 → the first heat exchanger 1 → the first electronic expansion valve 20 and the second electronic expansion valve 21 → the second heat exchanger 19 and the intermediate heat exchanger 2 → the second four-way valve 18 → the gas-liquid separator 22 → the compressor 17 in the cooling mode, and flows in the direction of the compressor 17 → the second four-way valve 18 → the second heat exchanger 19 and the intermediate heat exchanger 2 → the first electronic expansion valve 20 and the second electronic expansion valve 21 → the first heat exchanger 1 → the second four-way valve 18 → the gas-liquid separator 22 → the compressor 17 in the heating mode. Here, in the cooling mode and the heating mode, the opening degrees of the first electronic expansion valve 20 and the second electronic expansion valve 21 are controlled, and the second heat exchanger 19 and the intermediate heat exchanger 2 may be operated at different times.
The secondary refrigerant loop carries out relatively independent heat management on the battery system and the motor system, the two cycles are connected in parallel, direct heat exchange is avoided, and the two cycles can be divided into a battery heat management independent cycle and a motor heat management independent cycle. The battery thermal management independent cycle cools or heats the battery, and the flow direction of the coolant is the first pump 9 → the battery assembly 13 → the intermediate heat exchanger 2 → the first pump 9 with the inlet of the first pump 9 as a starting point; the motor thermal management independent cycle cools or heats the motor 11 and the motor controller 12, and the flow direction of the coolant is the first pump 9 → the first four-way valve 8 → the expansion tank 16 → the exterior heat exchanger 5 (or bypass) → the first three-way valve 6 → the first heat exchanger 1 → the second three-way valve 7 → the motor controller 12 → the motor 11 → the first pump 9, with the inlet of the first pump 9 as a starting point.
The step of selecting the thermal management mode of the thermal management system according to the comparison result comprises the following steps: when the temperature of the battery is higher than the preset upper limit of the temperature of the battery, controlling the air conditioner refrigerant loop to be in a refrigeration mode; controlling a first three-way valve 6 to be communicated with the first pipeline 3, controlling a second three-way valve 7 to be communicated with a motor branch, controlling the intermediate heat exchanger 2 to be communicated with a battery branch, and controlling the battery branch to be disconnected with the motor branch; the first four-way valve 8 is controlled, so that the adjusting branch is communicated with the battery branch, and the motor branch is communicated with the branch outside the vehicle; when the temperature of the battery is lower than the preset lower limit of the temperature of the battery, controlling the air-conditioning refrigerant loop to be in a heating mode; controlling a first three-way valve 6 to be communicated with the first pipeline 3, controlling a second three-way valve 7 to be communicated with a motor branch, controlling the intermediate heat exchanger 2 to be communicated with a battery branch, and controlling the battery branch to be disconnected with the motor branch; the first four-way valve 8 is controlled, so that the adjusting branch is communicated with the battery branch, and the motor branch is communicated with the vehicle outer branch.
The heat pipe of the battery assembly 13 exchanges heat with the coolant and the air conditioning coolant, so as to maintain the temperature of the battery within a reasonable range. In a first thermal management mode, if the temperature of the battery exceeds the upper limit of the normal working temperature, the air conditioner operates in a cooling mode, in the battery thermal management independent cycle, the flow directions of media at two sides in the intermediate heat exchanger 2 are the same, and the flow rates of the refrigerant and the secondary refrigerant are respectively adjusted by controlling the opening degree of the second electronic expansion valve 21 and the frequency of the first pump 9, so that the temperature of the secondary refrigerant is reduced to a target value, and the battery assembly 13 is cooled. In the independent heat management circulation of the motor, the coolant is released heat through the heat exchanger 5 outside the vehicle, cools the first heat exchanger 1, and then flows through the motor controller 12 and the motor 11 to cool the first heat exchanger.
If the temperature of the battery is lower than the lower limit of the normal working temperature, the air conditioner operates in a heating mode, in the battery thermal management independent cycle, the flow directions of the media on the two sides in the intermediate heat exchanger 2 are opposite, and the flow rates of the refrigerant and the secondary refrigerant are respectively adjusted by controlling the opening degree of the second electronic expansion valve 21 and the frequency of the first pump 9, so that the temperature of the secondary refrigerant is increased to a target value to heat the battery. In the independent heat management circulation of the motor, the coolant transfers the heat of the motor 11 and the motor controller 12 and the heat absorbed by the air outside the vehicle to the first heat exchanger 1 of the air conditioner, and the waste heat of the motor 11 and the motor controller 12 is utilized to improve the energy efficiency of the air conditioner.
The step of selecting the thermal management mode of the thermal management system according to the comparison result comprises the following steps: when the temperature of the battery is higher than the preset upper limit of the temperature of the battery, controlling the air conditioner refrigerant loop to be in a refrigeration mode; controlling the first three-way valve 6 to be communicated with the second pipeline 4, controlling the second three-way valve 7 to be communicated with the motor branch, controlling the intermediate heat exchanger 2 to be communicated with the battery branch, and controlling the battery branch to be disconnected with the motor branch; the first four-way valve 8 is controlled, so that the adjusting branch is communicated with the battery branch, and the motor branch is communicated with the branch outside the vehicle; when the temperature of the battery is lower than the preset lower limit of the temperature of the battery, controlling the air-conditioning refrigerant loop to be in a heating mode; controlling the first three-way valve 6 to be communicated with the second pipeline 4, controlling the second three-way valve 7 to be communicated with the motor branch, controlling the intermediate heat exchanger 2 to be communicated with the battery branch, and controlling the battery branch to be disconnected with the motor branch; the first four-way valve 8 is controlled, so that the adjusting branch is communicated with the battery branch, and the motor branch is communicated with the vehicle outer branch.
The second mode of thermal management differs from the first mode in that the first three-way valve 6 is reversed, i.e., the externally circulating coolant exits the expansion tank 16 without passing through the exterior heat exchanger 5, but instead bypasses through the second conduit 4 to the first heat exchanger 1. The circulation is suitable for the condition that the requirement of the carriage heating capacity and the battery heating capacity is small, namely, the waste heat recovery of the motor system meets the requirement of the carriage heating capacity and the battery heating capacity, and heat is not required to be taken from the environment.
In another embodiment, the coolant loop connects the battery assembly 13, the motor 11, and the motor controller 12 in series, the second three-way valve 7 is reversed, i.e., the intermediate heat exchanger 2 is not operated, and the coolant exchanges heat with the coolant only at the first heat exchanger 1, thereby maintaining the normal temperature of the battery assembly 13, the vehicle cabin, and the motor system. In this case there are three main circulation modes.
If the battery temperature exceeds the upper limit of the normal operating temperature, the battery needs to be cooled, the coolant system circulation mode mainly adopts a third thermal management mode and a fourth thermal management mode, as shown in fig. 4 and 5, and the coolant flows as follows:
with the inlet of the first pump 9 as a starting point, the flow direction of the coolant is the first pump 9 → the first four-way valve 8 → the battery assembly 13 → the first two-way valve 14 → the motor controller 12 → the motor 11 → the first pump 9 → the first four-way valve 8 → the expansion tank 16 → the exterior heat exchanger 5 (or bypass) → the first three-way valve 6 → the first heat exchanger 1 → the second three-way valve 7 → the first pump 9.
In a third thermal management mode, the step of selecting the thermal management mode of the thermal management system according to the comparison result comprises the following steps: when the temperature of the battery is higher than the preset upper limit of the temperature of the battery, controlling a first three-way valve 6 to be communicated with a first pipeline 3, controlling a second three-way valve 7 to be communicated with an adjusting branch, controlling the intermediate heat exchanger 2 to be disconnected with the battery branch, and controlling the battery branch to be communicated with a motor branch; the first four-way valve 8 is controlled, so that the adjusting branch is communicated with the battery branch, and the motor branch is communicated with the vehicle outer branch.
Under the condition that the motor 11 does not work, the third heat management mode transmits the heat generated by the battery assembly 13 and the heat of the heat source outside the vehicle to the first heat exchanger 1 so as to improve the heating capacity in the vehicle cabin for heat recovery; in addition, if the motor 11 is operated, the third thermal management mode transfers the heat generated by the battery assembly 13, the heat dissipated by the motor system, and the heat from the external ambient heat source to the first heat exchanger 1, further increasing the heating capacity in the vehicle cabin, which is suitable for transition seasons such as spring and autumn. The heat generation amount of the battery pack 13 can also be transmitted to the exterior heat exchanger 5, namely the first heat exchanger 1 does not work, and the condition is suitable for summer charging; in addition, if the motor 11 is operated, the heat generation amount of the battery assembly 13 and the heat dissipation amount of the motor system are transmitted to the exterior heat exchanger 5, i.e., the first heat exchanger 1 is not operated, which is also applicable to transitional seasons such as spring and autumn.
The third mode of thermal management is also suitable for use during initial system commissioning and maintenance, when supplemented with coolant.
In a fourth thermal management mode, the step of selecting the thermal management mode of the thermal management system according to the comparison result comprises the following steps: when the temperature of the battery is higher than the preset upper limit of the temperature of the battery, controlling a first three-way valve 6 to be communicated with a second pipeline 4, controlling a second three-way valve 7 to be communicated with an adjusting branch, controlling the intermediate heat exchanger 2 to be disconnected with the battery branch, and controlling the battery branch to be communicated with a motor branch; the first four-way valve 8 is controlled, so that the adjusting branch is communicated with the battery branch, and the motor branch is communicated with the vehicle outer branch.
The fourth thermal management mode and the third thermal management mode are different in that the first three-way valve 6 is reversed, namely, the externally circulating secondary refrigerant does not pass through the external heat exchanger 5 after coming out of the first three-way valve 6, but bypasses to the first four-way valve 8 to enter the battery branch, and at the moment, the secondary refrigerant transmits the heat productivity of the battery assembly 13 and the heat dissipation capacity of the motor system to the first heat exchanger 1, so that the heating capacity in the compartment is further improved. This situation is applicable to the situation that the carriage heating capacity demand is little, namely battery pack 13 and the waste heat recovery of motor system satisfy the carriage heating capacity, need not get heat from the environment again.
In a fifth thermal management mode, the step of selecting the thermal management mode of the thermal management system according to the comparison result comprises the following steps: when the temperature of the battery is lower than the preset lower limit of the temperature of the battery, controlling a first three-way valve 6 to be communicated with a first pipeline 3, controlling a second three-way valve 7 to be communicated with an adjusting branch, controlling the intermediate heat exchanger 2 to be disconnected with the battery branch, and controlling the battery branch to be communicated with a motor branch; control first cross valve 8 for adjust the branch road and the outer branch road intercommunication of car, the motor branch road and battery branch road intercommunication.
If the battery temperature is lower than the lower limit of the normal working temperature, the battery assembly 13 needs to be heated, the circulation mode of the secondary refrigerant system mainly adopts a fifth thermal management mode, as shown in fig. 6, at this time, the battery assembly 13, the motor 11 and the motor controller 12 form an independent loop, at this time, the battery, the motor and the electric control unit do not exchange heat with the compartment air conditioning system, and at this time, two independent secondary refrigerants circulate. The coolant circulation of the battery, the motor and the electric control unit is as follows:
with the inlet of the first pump 9 as a starting point, the flow direction of the coolant is as follows: the first pump 9 → the first four-way valve 8 → the battery assembly 13 → the first two-way valve 14 → the motor controller 12 → the motor 11 → the first pump 9, and the heat required by the battery is supplied by the motor 11 and the motor controller 12, which is suitable for transitional seasons such as spring and autumn;
another independent cycle is: with the inlet of the first pump 9 as a starting point, the flow direction of the coolant is as follows: the first pump 9 → the first four-way valve 8 → the expansion tank 16 → the heat exchanger 5 outside the vehicle → the first three-way valve 6 → the first heat exchanger 1 → the second three-way valve 7 → the first pump 9, when the heating or cooling demand is given to the carriage, the air conditioner is started, the refrigerant exchanges heat with the secondary refrigerant through the first heat exchanger 1, and the secondary refrigerant circulates and is driven by the first pump 9 to run; when the compartment has no heating or cooling demand, the air conditioner is turned off, and the cycle is not started, i.e. the first pump 9 is not operated.
It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.
The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed. The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present application, and these modifications and variations should also be considered as the protection scope of the present application.

Claims (16)

1. The heat management system is characterized by comprising an air-conditioning refrigerant loop and a secondary refrigerant loop, wherein the air-conditioning refrigerant loop comprises a first heat exchanger (1) and an intermediate heat exchanger (2), the secondary refrigerant loop comprises a secondary refrigerant heat exchange pipeline, an adjusting branch, a battery branch, a motor branch and an automobile outer branch, the automobile outer branch comprises a first pipeline (3) and a second pipeline (4) which are connected in parallel, the secondary refrigerant heat exchange pipeline is in heat exchange connection with the first heat exchanger (1), the first pipeline (3) is provided with an automobile outer heat exchanger (5), the first end of the secondary refrigerant heat exchange pipeline can be selectively communicated with the first end of the first pipeline (3) or the first end of the second pipeline (4) through a first three-way valve (6), the second end of the secondary refrigerant heat exchange pipeline can be selectively communicated with the first end of the adjusting branch or the first end of the motor branch through a second three-way valve (7), the second ends of the adjusting branch, the battery branch, the motor branch and the vehicle outer branch are connected through a first four-way valve (8), the adjusting branch is connected with the battery branch through a heat exchange branch, and the heat exchange branch is connected with the intermediate heat exchanger (2) in a heat exchange mode.
2. The thermal management system according to claim 1, characterized in that a first pump (9) is arranged on the regulating branch, and the heat exchange branch is connected to a line between the second three-way valve (7) and the first pump (9).
3. The heat management system according to claim 1, wherein a motor controller (12) and/or a motor (11) is/are arranged on the motor branch, and a second pump (10) is arranged on a pipeline connecting the motor controller (12) and/or the motor (11) with the first four-way valve (8).
4. The thermal management system according to claim 1, characterized in that a battery assembly (13) is arranged on the battery branch, the heat exchange branch is connected to an end of the battery assembly (13) remote from the first four-way valve (8),
a first two-way valve (14) is arranged on a pipeline, which is communicated with the second three-way valve (7), at one end of the battery component (13), which is far away from the first four-way valve (8); and/or a second two-way valve (15) is arranged on the heat exchange branch.
5. The thermal management system according to claim 1, characterized in that said extra-vehicle branch further comprises an expansion tank (16), said first pipeline (3) being connected in parallel with said second pipeline (4) and then connected with said first four-way valve (8), said expansion tank (16) being arranged on the pipeline between the parallel pipeline and said first four-way valve (8).
6. The thermal management system according to claim 1, wherein the air conditioning refrigerant circuit further comprises a compressor (17) and a second four-way valve (18), the compressor (17), the first heat exchanger (1) and the intermediate heat exchanger (2) being connected to the second four-way valve (18).
7. The thermal management system according to claim 6, characterized in that said air-conditioning refrigerant circuit further comprises a second heat exchanger (19), said second heat exchanger (19) being connected in parallel to said intermediate heat exchanger (2), a first electronic expansion valve (20) being provided in a branch of said second heat exchanger (19), and a second electronic expansion valve (21) being provided in a branch of said intermediate heat exchanger (2).
8. The thermal management system according to claim 6, characterized in that the suction side of the compressor (17) is provided with a gas-liquid separator (22).
9. The thermal management system of claim 1, wherein the refrigerant flow direction in the intermediate heat exchanger (2) is the same as the coolant flow direction when the air conditioning refrigerant circuit is in the cooling state, and wherein the refrigerant flow direction in the intermediate heat exchanger (2) is opposite to the coolant flow direction when the air conditioning refrigerant circuit is in the heating state.
10. An electric vehicle comprising a thermal management system, wherein the thermal management system is according to any one of claims 1 to 9.
11. A method of thermal management of a thermal management system according to any of claims 1 to 9, comprising:
detecting the temperature of the battery;
comparing the detected battery temperature with a preset battery temperature;
and selecting a thermal management mode of the thermal management system according to the comparison result.
12. The thermal management method of claim 11, wherein the step of selecting a thermal management mode of the thermal management system based on the comparison comprises:
when the temperature of the battery is higher than the preset upper limit of the temperature of the battery, controlling the air conditioner refrigerant loop to be in a refrigeration mode;
controlling a first three-way valve (6) to be communicated with a first pipeline (3), controlling a second three-way valve (7) to be communicated with a motor branch, controlling an intermediate heat exchanger (2) to be communicated with a battery branch, and controlling the battery branch to be disconnected with the motor branch;
the first four-way valve (8) is controlled, so that the adjusting branch is communicated with the battery branch, and the motor branch is communicated with the branch outside the vehicle;
when the temperature of the battery is lower than the preset lower limit of the temperature of the battery, controlling the air-conditioning refrigerant loop to be in a heating mode;
controlling a first three-way valve (6) to be communicated with a first pipeline (3), controlling a second three-way valve (7) to be communicated with a motor branch, controlling an intermediate heat exchanger (2) to be communicated with a battery branch, and controlling the battery branch to be disconnected with the motor branch;
and the first four-way valve (8) is controlled, so that the adjusting branch is communicated with the battery branch, and the motor branch is communicated with the external branch of the vehicle.
13. The thermal management method of claim 11, wherein the step of selecting a thermal management mode of the thermal management system based on the comparison comprises:
when the temperature of the battery is higher than the preset upper limit of the temperature of the battery, controlling the air conditioner refrigerant loop to be in a refrigeration mode;
the first three-way valve (6) is controlled to be communicated with the second pipeline (4), the second three-way valve (7) is controlled to be communicated with the motor branch, the intermediate heat exchanger (2) is controlled to be communicated with the battery branch, and the battery branch is controlled to be disconnected with the motor branch;
the first four-way valve (8) is controlled, so that the adjusting branch is communicated with the battery branch, and the motor branch is communicated with the branch outside the vehicle;
when the temperature of the battery is lower than the preset lower limit of the temperature of the battery, controlling the air-conditioning refrigerant loop to be in a heating mode;
the first three-way valve (6) is controlled to be communicated with the second pipeline (4), the second three-way valve (7) is controlled to be communicated with the motor branch, the intermediate heat exchanger (2) is controlled to be communicated with the battery branch, and the battery branch is controlled to be disconnected with the motor branch;
and the first four-way valve (8) is controlled, so that the adjusting branch is communicated with the battery branch, and the motor branch is communicated with the external branch of the vehicle.
14. The thermal management method of claim 11, wherein the step of selecting a thermal management mode of the thermal management system based on the comparison comprises:
when the temperature of the battery is higher than the preset upper limit of the temperature of the battery, controlling a first three-way valve (6) to be communicated with a first pipeline (3), controlling a second three-way valve (7) to be communicated with an adjusting branch, controlling an intermediate heat exchanger (2) to be disconnected with a battery branch, and controlling the battery branch to be communicated with a motor branch;
and the first four-way valve (8) is controlled, so that the adjusting branch is communicated with the battery branch, and the motor branch is communicated with the external branch of the vehicle.
15. The thermal management method of claim 11, wherein the step of selecting a thermal management mode of the thermal management system based on the comparison comprises:
when the temperature of the battery is higher than the preset upper limit of the temperature of the battery, controlling a first three-way valve (6) to be communicated with a second pipeline (4), controlling a second three-way valve (7) to be communicated with an adjusting branch, controlling the intermediate heat exchanger (2) to be disconnected with the battery branch, and controlling the battery branch to be communicated with a motor branch;
and the first four-way valve (8) is controlled, so that the adjusting branch is communicated with the battery branch, and the motor branch is communicated with the external branch of the vehicle.
16. The thermal management method of claim 11, wherein the step of selecting a thermal management mode of the thermal management system based on the comparison comprises:
when the temperature of the battery is lower than the preset lower limit of the temperature of the battery, controlling a first three-way valve (6) to be communicated with a first pipeline (3), controlling a second three-way valve (7) to be communicated with an adjusting branch, controlling an intermediate heat exchanger (2) to be disconnected with a battery branch, and controlling the battery branch to be communicated with a motor branch;
and the first four-way valve (8) is controlled, so that the adjusting branch is communicated with the branch outside the vehicle, and the motor branch is communicated with the battery branch.
CN202010817167.2A 2020-08-14 2020-08-14 Thermal management system, thermal management method and electric automobile Pending CN112046236A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010817167.2A CN112046236A (en) 2020-08-14 2020-08-14 Thermal management system, thermal management method and electric automobile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010817167.2A CN112046236A (en) 2020-08-14 2020-08-14 Thermal management system, thermal management method and electric automobile

Publications (1)

Publication Number Publication Date
CN112046236A true CN112046236A (en) 2020-12-08

Family

ID=73599133

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010817167.2A Pending CN112046236A (en) 2020-08-14 2020-08-14 Thermal management system, thermal management method and electric automobile

Country Status (1)

Country Link
CN (1) CN112046236A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113547957A (en) * 2021-08-05 2021-10-26 安徽江淮松芝空调有限公司 Heat management integrated module of electric automobile and heat management system thereof
CN114216285A (en) * 2021-11-29 2022-03-22 青岛海尔空调器有限总公司 Control method of temperature management system of vehicle and temperature management system
CN115214734A (en) * 2022-08-16 2022-10-21 中车大连机车研究所有限公司 Thermal management device of battery-powered locomotive and control method thereof

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113547957A (en) * 2021-08-05 2021-10-26 安徽江淮松芝空调有限公司 Heat management integrated module of electric automobile and heat management system thereof
CN113547957B (en) * 2021-08-05 2023-08-22 安徽江淮松芝空调有限公司 Electric automobile's thermal management integrated module and thermal management system thereof
CN114216285A (en) * 2021-11-29 2022-03-22 青岛海尔空调器有限总公司 Control method of temperature management system of vehicle and temperature management system
CN115214734A (en) * 2022-08-16 2022-10-21 中车大连机车研究所有限公司 Thermal management device of battery-powered locomotive and control method thereof
CN115214734B (en) * 2022-08-16 2024-01-26 中车大连机车研究所有限公司 Battery power locomotive thermal management device and control method thereof

Similar Documents

Publication Publication Date Title
CN112046236A (en) Thermal management system, thermal management method and electric automobile
CN111231655B (en) Vehicle thermal management system, control method thereof and vehicle
CN111716993A (en) Low-energy-consumption heat management system
CN111251802B (en) Thermal management system of vehicle and vehicle
CN113059980B (en) Integrated thermal management system and vehicle
CN111231772A (en) Vehicle thermal management system, control method thereof and vehicle
CN111251813B (en) Thermal management system of vehicle and vehicle
CN111993884B (en) Hybrid vehicle thermal management system and hybrid vehicle thermal management method
CN212289440U (en) Thermal management system and electric vehicle
CN111251814A (en) Thermal management system of vehicle and vehicle
CN111251807A (en) Whole car thermal management system and have its vehicle
CN111422027B (en) Vehicle thermal management system and control method thereof
CN112046237A (en) Thermal management system, control method and electric vehicle
CN112046239A (en) Thermal management system and electric automobile
CN218400117U (en) Vehicle thermal management system and vehicle
CN111251808B (en) Thermal management system of vehicle and vehicle
CN111186340A (en) Electric automobile heat management system and electric automobile
CN212289436U (en) Thermal management system and electric automobile
CN212289439U (en) Thermal management system and electric automobile
CN215153791U (en) Thermal management system and electric automobile
CN112046240A (en) Thermal management system, thermal management method and electric automobile
CN216033622U (en) Integrated thermal management system and vehicle
CN111251801A (en) Thermal management system of vehicle and vehicle
CN113147320B (en) Heat pump automobile air conditioning system
CN111016582B (en) Electric automobile heat pump system and electric automobile

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination