CN111791663B - Electric vehicle thermal management system - Google Patents
Electric vehicle thermal management system Download PDFInfo
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- CN111791663B CN111791663B CN201910280850.4A CN201910280850A CN111791663B CN 111791663 B CN111791663 B CN 111791663B CN 201910280850 A CN201910280850 A CN 201910280850A CN 111791663 B CN111791663 B CN 111791663B
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- way valve
- power battery
- evaporator
- passenger compartment
- water pump
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00357—Air-conditioning arrangements specially adapted for particular vehicles
- B60H1/00385—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell
- B60H1/00392—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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
- B60H1/00278—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit for the battery
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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
- B60H1/02—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
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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
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
- B60H2001/00307—Component temperature regulation using a liquid flow
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- 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 an electric vehicle heat management system which comprises a motor cooling system, a first controllable switch, a passenger compartment water heating system, a second controllable switch, a third controllable switch and a heat pump air conditioning system, wherein the controllable switches are arranged to realize the switching between a series mode and an independent mode of a power battery temperature control system and the motor cooling system, the switching between the series mode and the independent mode of the power battery temperature control system and the passenger compartment water heating system and the switching between the series mode and the independent mode of the motor cooling system and the passenger compartment water heating system, a heat exchange device is arranged to realize the heat exchange between the heat pump air conditioning system and the power battery temperature control system, the heat exchange between the heat pump air conditioning system and the motor cooling system, the heat exchange between the heat pump air conditioning system and the passenger compartment water heating system and the heat exchange between the heat pump air conditioning system and the air in the passenger compartment, the heat is flexibly transferred among the four systems, so that the energy consumption of the electric vehicle is reduced, and the driving range of the electric vehicle is increased.
Description
Technical Field
The application relates to the technical field of vehicles, in particular to an electric vehicle thermal management system.
Background
At present, electric vehicles generally use power supplied by a power battery to provide energy for accessories such as vehicle driving, air conditioning, passenger compartment heater, and battery heater, and the driving range of the electric vehicle can be increased by reducing the energy consumption of the accessories. In order to reduce the energy consumption of the whole vehicle, a heat pump air conditioner is applied to an electric vehicle, an external evaporator of the heat pump air conditioner is easy to frost under low-temperature and high-humidity environments, so that the efficiency of the heat pump air conditioner is reduced, and a defrosting mode needs to be entered; under low temperature conditions, when the vehicle runs after cold start, the motor generates heat, and the power battery can only be heated by the electric heater with low heat efficiency.
In summary, the prior art has a problem that energy transfer cannot be performed between different systems.
Disclosure of Invention
The application aims to provide an electric vehicle thermal management system to solve the problem that energy transfer cannot be carried out among different systems in the prior art.
The present application is achieved in that in a first aspect, the present application provides an electric vehicle thermal management system, comprising:
the power battery temperature control system is used for controlling the temperature of the power battery;
the motor cooling system is used for cooling the motor through the radiator;
the first controllable switch is used for connecting or disconnecting the power battery temperature control system and the motor cooling system according to a control signal;
the passenger compartment water heating system is used for controlling the temperature of the passenger compartment;
the second controllable switch is used for connecting or disconnecting the power battery temperature control system and the passenger compartment water heating system according to a control signal;
the third controllable switch is used for connecting or disconnecting the motor cooling system and the passenger compartment water heating system according to a control signal;
the heat pump air conditioning system is used for exchanging heat with at least one of the passenger cabin, the power battery temperature control system, the motor cooling system and the passenger cabin water heating system through a heat exchange device.
The application provides an electric vehicle heat management system, which comprises a motor cooling system, a first controllable switch, a passenger compartment water heating system, a second controllable switch, a third controllable switch and a heat pump air conditioning system, wherein the power battery temperature control system and the motor cooling system are switched between a series mode and an independent mode by arranging the first controllable switch, the power battery temperature control system and the passenger compartment water heating system are switched between the series mode and the independent mode by arranging the second controllable switch, the motor cooling system and the passenger compartment water heating system are switched between the series mode and the independent mode by arranging the third controllable switch, the heat pump air conditioning system and the power battery temperature control system are subjected to heat exchange by arranging a heat exchange device, the heat pump air conditioning system and the motor cooling system are subjected to heat exchange, and the heat pump air conditioning system and the passenger compartment water heating system are subjected to heat exchange, the heat pump air conditioning system exchanges heat with air in the passenger compartment, coupling between any two systems of the power battery temperature control system, the motor cooling system, the passenger compartment water heating system and the heat pump air conditioning system is achieved, heat is transferred flexibly among the four systems, and therefore energy consumption of the electric vehicle is reduced, and the driving range of the electric vehicle is increased.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
FIG. 1 is a schematic structural diagram of an electric vehicle thermal management system according to an embodiment of the present disclosure;
FIG. 2 is another schematic structural diagram of a thermal management system of an electric vehicle according to an embodiment of the present application;
FIG. 3 is a schematic diagram illustrating a flow of coolant in a first predetermined operation mode of a thermal management system of an electric vehicle according to an embodiment of the present disclosure;
FIG. 4 is a schematic diagram illustrating a flow of coolant in a second predetermined operation mode of a thermal management system of an electric vehicle according to an embodiment of the present application;
FIG. 5 is a schematic diagram illustrating a coolant flow in a third preset operation mode of the thermal management system of the electric vehicle according to the embodiment of the present application;
FIG. 6 is a schematic diagram illustrating a coolant flow in a fourth preset operation mode of the thermal management system of the electric vehicle according to the embodiment of the present application;
FIG. 7 is a schematic diagram illustrating a flow of coolant in a fifth predetermined operation mode of a thermal management system of an electric vehicle according to an embodiment of the present application;
FIG. 8 is a schematic diagram illustrating a flow of coolant in a sixth predetermined operating mode of a thermal management system of an electric vehicle according to an embodiment of the present application;
FIG. 9 is a schematic diagram illustrating a flow of coolant in a seventh predetermined operation mode of the thermal management system of the electric vehicle according to the embodiment of the present application;
FIG. 10 is a schematic diagram illustrating a coolant flow in an eighth preset operation mode of the thermal management system of the electric vehicle according to the embodiment of the present application;
fig. 11 is a schematic diagram of a flow of coolant in a ninth preset operation mode in a thermal management system of an electric vehicle according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In order to explain the technical means of the present application, the following description will be given by way of specific examples.
An embodiment of the present application provides an electric vehicle thermal management system, as shown in fig. 1, the electric vehicle thermal management system includes:
the power battery temperature control system 100 is used for controlling the temperature of the power battery;
a motor cooling system 200 for cooling the motor by the radiator;
the first controllable switch is used for connecting or disconnecting the power battery temperature control system 100 and the motor cooling system 200 according to the control signal;
a passenger compartment water heating system 400 for performing temperature control on the passenger compartment;
a second controllable switch for connecting or disconnecting the power battery temperature control system 100 and the passenger compartment water heating system 400 according to the control signal;
a third controllable switch for connecting or disconnecting the motor cooling system 200 and the passenger compartment water heating system 400 according to the control signal;
the heat pump air conditioning system 300 is configured to exchange heat with at least one of the passenger compartment, the power battery temperature control system 100, the motor cooling system 200, and the passenger compartment water heating system 400 through a heat exchange device.
The power battery temperature control system 100 at least comprises a power battery, a water pump, a condenser and an evaporator, the temperature of cooling liquid in a pipeline is adjusted through the condenser and the evaporator, and the temperature of the power battery is adjusted when the cooling liquid flows through the power battery.
The motor cooling system 200 at least includes a motor, a radiator and an evaporator, the temperature of the cooling liquid in the pipeline is adjusted through the radiator and the evaporator, and the temperature of the motor is adjusted when the cooling liquid flows through the motor.
Wherein, for the connection mode of the first controllable switch, the first implementation mode: the first controllable switch can be located in the power battery temperature control system 100 and connected with the controllable switch in the motor cooling system 200; the second embodiment: the first controllable switch may be located in the motor cooling system 200 and connected to the controllable switch in the power battery temperature control system 100; third embodiment: as shown in fig. 2, the first controllable switch 500 is independent of the motor cooling system 200 and the power battery temperature control system 100, and is connected to the controllable switches in the motor cooling system 200 and the power battery temperature control system 100, respectively. For the structure of the first controllable switch, the first controllable switch may be a three-way valve or a four-way valve, and the first controllable switch may switch between the series mode and the independent mode of the power battery temperature control system 100 and the motor cooling system 200 according to the control signal.
The passenger compartment water heating system 400 at least comprises a water pump, a condenser, a warm air core, an air conditioner fan and the like, and air driven by the air conditioner fan flows through the warm air core and then enters the passenger compartment to adjust the temperature of the passenger compartment.
Wherein, as for the connection mode of the second controllable switch, the first embodiment: the second controllable switch may be located in the power battery temperature control system 100 and connected to the controllable switch in the passenger compartment water heating system 400; the second embodiment: the second controllable switch may be located in the passenger compartment water heating system 400 and connected to the controllable switch in the power battery temperature control system 100; third embodiment: as shown in fig. 2, the second controllable switch 600 is independent of the passenger compartment water heating system 400 and the power battery temperature control system 100, and is connected to the controllable switches in the passenger compartment water heating system 400 and the power battery temperature control system 100, respectively. For the structure of the second controllable switch, the second controllable switch may be a three-way valve or a four-way valve, and the second controllable switch may switch between the series mode and the independent mode of the power battery temperature control system 100 and the passenger compartment water heating system 400 according to the control signal.
Wherein, for the connection mode of the third controllable switch, the first embodiment: the third controllable switch may be located in the motor cooling system 200 and connected to the controllable switch in the passenger compartment water heating system 400; the second embodiment: the third controllable switch may be located in the passenger compartment water heating system 400 and connected to the controllable switch in the motor cooling system 200; third embodiment: as shown in fig. 2, the third controllable switch 700 is independent of the passenger compartment water heating system 400 and the motor cooling system 200, and is connected to the controllable switches in the passenger compartment water heating system 400 and the motor cooling system 200, respectively; for the structure of the third controllable switch, the third controllable switch may be a three-way valve or a four-way valve, and the switching between the series mode and the independent mode of the motor cooling system 200 and the passenger compartment water heating system 400 may be realized according to the control signal.
Wherein, the heat pump air-conditioning system 300 at least comprises a compressor, a condenser, an external heat exchanger and an evaporator, the heat pump air-conditioning system 300 exchanges heat with at least one of the passenger compartment, the power battery temperature control system 100, the motor cooling system 200 and the passenger compartment water heating system 400 through a heat exchange device, which means that the heat pump air-conditioning system 300 can exchange heat with any one of the passenger compartment, the power battery temperature control system 100, the motor cooling system 200 and the passenger compartment water heating system 400 at a time, or can exchange heat with two or three of the passenger compartment, the power battery temperature control system 100, the motor cooling system 200 and the passenger compartment water heating system 400 at a time, and the heat pump air-conditioning system 300 can exchange heat with the power battery temperature control system 100, the motor cooling system 200 and the passenger compartment water heating system 400 through a common evaporator or condenser, for example, the heat pump air conditioning system 300 and the power battery temperature control system 100 share a condenser and an evaporator to realize heat exchange, the heat pump air conditioning system 300 and the motor cooling system 200 perform heat exchange through the shared evaporator, the heat pump air conditioning system 300 and the passenger compartment water heating system 400 perform heat exchange through the shared condenser, and the heat pump air conditioning system 300 performs heat exchange with the warm air core and the air in the passenger compartment through the evaporator.
To sum up, the thermal management system of the electric vehicle according to the embodiment of the invention can switch between the series mode and the independent mode of the power battery temperature control system 100 and the motor cooling system 200, switch between the series mode and the independent mode of the power battery temperature control system 100 and the passenger compartment water heating system 400, switch between the series mode and the independent mode of the motor cooling system 200 and the passenger compartment water heating system 400, and establish the communication channel between the heat pump air conditioning system 300 and the power battery temperature control system 100, the motor cooling system 200 and the passenger compartment water heating system 400 to realize the heat exchange between the heat pump air conditioning system 300 and the power battery temperature control system 100, the heat exchange between the heat pump air conditioning system 300 and the motor cooling system 200, and the heat exchange between the heat pump air conditioning system 300 and the passenger compartment water heating system 400 by controlling the first controllable switch, the second controllable switch and the third controllable switch, and the heat exchange between the heat pump air-conditioning system 300 and the air in the passenger compartment can be realized, namely, the coupling between any two systems of the power battery temperature control system 100, the motor cooling system 200, the passenger compartment water heating system 400 and the heat pump air-conditioning system 300 can be realized, so that the heat is flexibly transferred among the four systems, the energy consumption of the electric vehicle is reduced, and the driving range of the electric vehicle is increased.
The heat exchange method of the heat pump air conditioning system 300 with the passenger compartment, the power battery temperature control system 100, the motor cooling system 200 and the passenger compartment water heating system 400 includes the following embodiments:
as a first embodiment, the heat pump air conditioning system 300 cools at least one of the passenger compartment, the power battery, and the motor according to a preset operation mode.
The preset working mode is a control mode for controlling the heat pump air conditioning system 300 to refrigerate at least one of the passenger compartment, the power battery and the motor according to the current environment state.
As a first preset working mode, the preset working mode is a cooling mode of the heat pump air conditioning system 300 for the passenger compartment; as shown in fig. 3, the heat pump air conditioning system 300 includes a compressor 23, a first condenser 2, a second condenser 9, a fourth electronic expansion valve 24, an external heat exchanger 25, a first electronic expansion valve 26, and a first evaporator 27, which are connected in this order to form a circuit; the heat pump air conditioning system 300 further includes an air conditioning fan 14 for driving air into the passenger compartment through the first evaporator 27.
The working principle of the working mode is as follows: the low-temperature low-pressure cooling liquid is compressed by the compressor 23 to become high-temperature high-pressure gas, sequentially flows through the first condenser 2, the second condenser 9 and the fourth electronic expansion valve 24 in a fully open state, is cooled by the external heat exchanger 25 to become medium-temperature high-pressure liquid, is gasified and absorbs heat in the first evaporator 27 after passing through the first electronic expansion valve 26, and finally flows back to the compressor 23, the air-conditioning fan 14 drives air to flow through the first evaporator 27, and the air is cooled by the first evaporator 27 and then enters the passenger compartment, so that the heat pump air-conditioning system 300 is used for refrigerating the passenger compartment.
In the present operating mode, the heat pump air conditioning system 300 drives air to flow through the first evaporator 27 and enter the passenger compartment by the air conditioning fan 14 therein, so as to adjust the temperature in the passenger compartment.
As a second preset working mode, the preset working mode is a mode that the heat pump air conditioning system 300 simultaneously refrigerates the passenger compartment and the power battery 6; as shown in fig. 4, the heat pump air conditioning system 300 includes a compressor 23, a first condenser 2, a second condenser 9, a fourth electronic expansion valve 24, an exterior heat exchanger 25, a first electronic expansion valve 26, and a first evaporator 27, which are connected in this order to form a circuit; the power battery temperature control system 100 comprises a first water pump 1, a ninth three-way valve 30, a first three-way valve 3, a second three-way valve 4, a second evaporator 5, a power battery 6 and a third three-way valve 7 which are sequentially connected to form a loop; the heat pump air conditioning system 300 further comprises a second electronic expansion valve 28 and an air conditioning fan 14, wherein a first end of the second electronic expansion valve 28 is connected with the second evaporator 5, and a second end of the second electronic expansion valve 28 is connected with the external heat exchanger 25.
The working principle of the working mode is as follows: the present operation mode is different from the first operation mode in that the second electronic expansion valve 28 is in an open state, the coolant flows through the second electronic expansion valve 28 and the second evaporator 5 in this order, and the coolant absorbs heat and evaporates in the second evaporator 5 to cool the coolant flowing therethrough.
In the power battery temperature control system 100, the coolant output by the first water pump 1 flows through the ninth three-way valve 30, the first three-way valve 3, the second three-way valve 4 and the second evaporator 5 in sequence, the coolant exchanges heat with the low-temperature coolant in the second evaporator 5 to reduce the temperature of the coolant, then the coolant flows through the power battery 6 to cool the power battery 6, and finally the coolant flows back to the first water pump 1 after passing through the third three-way valve 7.
In the working mode, the air-conditioning fan 14 inside the heat pump air-conditioning system 300 drives the air to flow through the first evaporator 27 and then enter the passenger compartment, so that the temperature in the passenger compartment is adjusted, the second electronic expansion valve 28 is controlled to be conducted, and the heat exchange between the heat pump air-conditioning system 300 and the power battery temperature control system 100 is realized by the heat exchange between the second evaporator 5 and the power battery temperature control system 100.
Further, the second preset working mode also comprises a motor cooling mode;
the motor cooling system 200 includes a third water pump 16, a drive motor 17, a seventh three-way valve 18, a radiator 19, a third evaporator 21, and an eighth three-way valve 22, which are connected in this order to form a circuit.
In the motor cooling system 200, the coolant output by the third water pump 16 sequentially flows through the driving motor 17, the seventh three-way valve 18 and the radiator 19, the coolant is cooled by air in the radiator 19, then flows through the third evaporator 21 and the eighth three-way valve 22, and finally flows back to the third water pump 16, and the cooled coolant enters the driving motor 17 again to cool the driving motor.
In the present operation mode, the cooling liquid is cooled by the radiator 19, so that the driving motor 17 is cooled.
As a third preset working mode, the preset working mode is a mode that the heat pump air conditioning system 300 simultaneously performs refrigeration on the passenger compartment, the power battery 6 and the motor 17; as shown in fig. 5, the heat pump air conditioning system 300 includes a compressor 23, a first condenser 2, a second condenser 9, a fourth electronic expansion valve 24, an exterior heat exchanger 25, a first electronic expansion valve 26, and a first evaporator 27, which are connected in this order to form a circuit; the power battery temperature control system 100 comprises a first water pump 1, a ninth three-way valve 30, a first three-way valve 3, a second three-way valve 4, a second evaporator 5, a power battery 6 and a third three-way valve 7 which are sequentially connected to form a loop; the motor cooling system comprises a third water pump 16, a driving motor 17, a seventh three-way valve 18, a radiator 19, a third evaporator 21 and an eighth three-way valve 22 which are sequentially connected to form a loop; the thermal management system further comprises a third electronic expansion valve 29, a first end of the third electronic expansion valve 29 is connected to a second end of the second electronic expansion valve 28, and a second end of the third electronic expansion valve 29 is connected to the third evaporator 21.
The working principle of the working mode is as follows: the third electronic expansion valve 29 is in an open state, and the coolant flows through the third electronic expansion valve 29 and the third evaporator 21 in this order, and the third evaporator 21 cools the coolant flowing therethrough by endothermic evaporation.
In the power battery temperature control system 100, the coolant output by the first water pump 1 flows through the ninth three-way valve 30, the first three-way valve 3, the second three-way valve 4 and the second evaporator 5 in sequence, the coolant exchanges heat with the low-temperature coolant in the second evaporator 5 to reduce the temperature of the coolant, then the coolant flows through the power battery 6, the low-temperature coolant cools the power battery 6, and finally the coolant flows back to the first water pump 1 after passing through the third three-way valve 7.
In the motor cooling system 200, the coolant output from the third water pump 16 flows through the driving motor 17, the seventh three-way valve 18, and the radiator 19 in this order, and after being cooled by air in the radiator 19, the coolant flows through the third evaporator 21 to be cooled again, then flows through the eighth three-way valve 22, finally flows back to the third water pump 16, and enters the driving motor 17 to be cooled.
The heat pump air conditioning system 300 drives air to flow through the evaporator 27 by the air conditioning fan 14, enters the passenger compartment, exchanges heat with the power battery temperature control system 100 through the first condenser 2 and the second evaporator 5, and exchanges heat with the motor cooling system through the third evaporator 21 and the third electronic expansion valve 29.
As a second embodiment, the heat pump air conditioning system 300 heats at least one of the passenger compartment and the power battery according to a preset operation mode.
The preset working mode is that the heat pump air conditioning system 300 is controlled to heat at least one of the passenger compartment and the power battery according to the current environmental state.
As a fourth preset working mode, the preset working mode is that the heat pump air conditioning system 300 performs a heating mode on the power battery and the passenger compartment; as shown in fig. 6, the heat pump air conditioning system 300 includes a compressor 23, a first condenser 2, a second condenser 9, a fourth electronic expansion valve 24, an exterior heat exchanger 25, a first electronic expansion valve 26, and a first evaporator 27, which are connected in this order to form a circuit; the passenger compartment water heating system 400 comprises a second water pump 8, a second condenser 9, a heater 10, a fourth three-way valve 11, a fifth three-way valve 12, a warm air core 13 and a sixth three-way valve 15 which are sequentially connected to form a loop; the power battery temperature control system 100 comprises a first water pump 1, a ninth three-way valve 30, a first three-way valve 3, a second three-way valve 4, a second evaporator 5, a power battery 6 and a third three-way valve 7 which are sequentially connected to form a loop; the motor cooling system includes a third water pump 16, a drive motor 17, a seventh three-way valve 18, a radiator 19, a third evaporator 21, and an eighth three-way valve 22, which are connected in sequence to form a circuit.
The working principle of the working mode is as follows: the low-temperature and low-pressure coolant is compressed by the compressor 23 and then turns into high-temperature and high-pressure gas, which is condensed and released in the first condenser 2 and the second condenser 9 in sequence to heat the coolant in the first condenser 2 and the second condenser 9, respectively. Subsequently, the coolant flows through the fourth expansion valve 24, the exterior heat exchanger 25, the third electronic expansion valve 29, enters the third evaporator 21 to be heat-exchanged with the coolant therein, absorbs heat, and flows back to the compressor 23, with the fourth expansion valve 24 being in a fully open state.
In the power battery temperature control system 100, the coolant output by the first water pump 1 sequentially flows through the ninth three-way valve 30, then enters the first condenser 2 and is heated by the first condenser, then flows through the first three-way valve 3, the second three-way valve 4 and the second evaporator 5, and enters the power battery 6, and the high-temperature coolant heats the power battery 6 and finally flows back to the first water pump 1 after passing through the third three-way valve 7.
In the heat pump air conditioning system 300, the coolant output by the second water pump 8 flows through the second condenser 9, absorbs heat of the high-temperature coolant therein, and then enters the heater 10, the fourth three-way valve 11 and the warm air core 13, heats air flowing through the warm air core 13 in the warm air core 13, and then flows back to the second water pump 8 through the sixth three-way valve 15.
The heat pump air conditioning system 300 drives air to flow through the evaporator 27 by the air conditioning fan 14, enters the passenger compartment, and exchanges heat with the power battery temperature control system 100 through the first condenser 2 and the second evaporator 5.
In the motor cooling system 200, the coolant output from the third water pump 16 flows through the driving motor 17, is heated by the driving motor, then flows through the seventh three-way valve 18, the fifth three-way valve 12, enters the third evaporator 21 to cool the coolant therein, then flows through the eighth three-way valve 22, and finally flows back to the third water pump 16.
In this mode of operation, the heater 10 may also be activated to provide additional heat to the power cell and the passenger compartment.
The heating mode for the passenger compartment comprises the following embodiments:
as a third embodiment, at least one of the power battery temperature control system 100, the motor cooling system 200, and the heat pump air conditioning system 300 heats the passenger compartment according to a preset operation mode.
As a fifth preset working mode, the preset working mode is that the power battery temperature control system 100 and the motor cooling system 200 perform heating mode on the passenger compartment; as shown in fig. 7, the passenger compartment water heating system 400 includes a second water pump 8, a second condenser 9, a heater 10, a fourth three-way valve 11, a fifth three-way valve 12, a warm air core 13, and a sixth three-way valve 15, which are connected in sequence to form a circuit; the power battery temperature control system 100 comprises a first water pump 1, a ninth three-way valve 30, a first three-way valve 3, a second three-way valve 4, a second evaporator 5, a power battery 6 and a third three-way valve 7 which are sequentially connected to form a loop; the motor cooling system 200 includes a third water pump 16, a driving motor 17, a seventh three-way valve 18, a radiator 19, a third evaporator 21, and an eighth three-way valve 22, which are connected in sequence to form a loop; the fifth three-way valve 12 is connected with a seventh three-way valve 18, the sixth three-way valve 15 is connected with the second three-way valve 4, and the third three-way valve 7 is connected with a third water pump 16; when the second three-way valve 4, the third three-way valve 7, the fifth three-way valve 12, the sixth three-way valve 15, and the seventh three-way valve 18 are turned on according to the control signal, the third water pump 16, the driving motor 17, the seventh three-way valve 18, the fifth three-way valve 12, the warm air core 13, the sixth three-way valve 15, the second water pump 8, the second condenser 9, the heater 10, the fourth three-way valve 11, the third evaporator 21, the eighth three-way valve 22, the first water pump 1, the ninth three-way valve 30, the first three-way valve 3, the second three-way valve 4, the second evaporator 5, the power battery 6, and the third three-way valve 7 form a first heating circuit.
The working principle of the working mode is as follows: the coolant output by the third water pump 16 enters the driving motor 17, the temperature rises after absorbing heat, then flows through the seventh three-way valve 18 and the fifth three-way valve 12, enters the warm air core 13, heats the warm air core 13, then flows through the sixth three-way valve 15, the second water pump 8, the second condenser 9, the heater 10, the fourth three-way valve 11, the third evaporator 21, the eighth three-way valve 22, the first water pump 1, the ninth three-way valve 30, the first three-way valve 3, the second three-way valve 4 and the second evaporator 5, then flows through the power battery 6 to heat the power battery, finally flows back to the third water pump 16 after passing through the third three-way valve 7, and the air conditioner fan 14 drives air to flow through the warm air core 13 and enter the passenger compartment after heating.
As a sixth preset working mode, the preset working mode is that the power battery temperature control system 100 carries out heating mode on the passenger compartment; as shown in fig. 8, the passenger compartment water heating system 400 includes a second water pump 8, a second condenser 9, a heater 10, a fourth three-way valve 11, a warm air core 13, and a sixth three-way valve 15, which are connected in this order to form a circuit; the power battery temperature control system 100 comprises a first water pump 1, a ninth three-way valve 30, a first three-way valve 3, a second three-way valve 4, a second evaporator 5, a power battery 6 and a third three-way valve 7 which are sequentially connected to form a loop; the sixth three-way valve 15 is connected with the second three-way valve 4, and when the second three-way valve 4 and the sixth three-way valve 15 are switched on according to the control signal, the power battery 6, the third three-way valve 7, the first water pump 1, the ninth three-way valve 30, the first three-way valve 3, the second water pump 8, the second condenser 9, the heater 10, the fourth three-way valve 11, the warm air core 13, the sixth three-way valve 15, the second three-way valve 4 and the second evaporator 5 form a second heating loop.
The working principle of the working mode is as follows: the cooling liquid is heated and heated after flowing through the power battery 6, then sequentially flows through the third three-way valve 7, the first water pump 1, the ninth three-way valve 30, the first three-way valve 3, the second water pump 8, the second condenser 9, the heater 10, the fourth three-way valve 11 and the warm air core 13, heats air flowing through the warm air core 13, then flows through the sixth three-way valve 15, the second three-way valve 4 and the second evaporator 5, and finally flows back to the power battery 6.
The passenger compartment water heating system 400 further includes an air conditioning fan 14, and the air conditioning fan 14 drives air to flow through the warm air core 13 and enter the passenger compartment.
As a seventh preset working mode, the preset working mode is that the motor cooling system carries out heating mode on the passenger compartment; as shown in fig. 9, the passenger compartment water heating system 400 includes a second water pump 8, a second condenser 9, a heater 10, a fourth three-way valve 11, a fifth three-way valve 12, a warm air core 13, and a sixth three-way valve 15, which are connected in sequence to form a circuit; the motor cooling system comprises a third water pump 16, a driving motor 17, a seventh three-way valve 18, a third evaporator 21 and an eighth three-way valve 22 which are sequentially connected to form a loop; the fifth three-way valve 12 is connected to the seventh three-way valve 18, and when the fifth three-way valve 12 and the seventh three-way valve 18 are turned on according to the control signal, the third water pump 16, the driving motor 17, the seventh three-way valve 18, the fifth three-way valve 12, the warm air core 13, the sixth three-way valve 15, the second water pump 8, the second condenser 9, the heater 10, the fourth three-way valve 11, the third evaporator 21, and the eighth three-way valve 22 form a third heating circuit.
The working principle of the working mode is as follows: the coolant output by the third water pump 16 passes through the driving motor 17, is heated by the driving motor 17, and then flows through the seventh three-way valve 18, the fifth three-way valve 12, the third evaporator 21, the eighth three-way valve 22, the first water pump 1, the ninth three-way valve 30, the first three-way valve 3, the second three-way valve 4, and the second evaporator 5, enters the power battery 6, and the high-temperature coolant heats the power battery 6 and finally flows back to the third water pump 16.
As an eighth preset operation mode, the preset operation mode is a heating mode of the heat pump air conditioning system 300 for the passenger compartment; as shown in fig. 10, the heat pump air conditioning system 300 includes a compressor 23, a first condenser 2, a second condenser 9, a fourth electronic expansion valve 24, an exterior heat exchanger 25, a first electronic expansion valve 26, and a first evaporator 27, which are connected in this order to form a circuit; the passenger compartment water heating system 400 includes a second water pump 8, a second condenser 9, a heater 10, a fourth three-way valve 11, a warm air core 13, and a sixth three-way valve 15, which are connected in this order to form a circuit.
The working principle of the working mode is as follows: the low-temperature low-pressure coolant is compressed by the compressor 23 to become high-temperature high-pressure gas, and the high-temperature high-pressure gas flows through the first condenser 2 and the second condenser 9 in sequence, condenses and releases heat in the second condenser 9, and heats the coolant flowing through the second condenser.
In the passenger compartment water heating system 400, the coolant flow output by the second water pump 8 enters the second condenser 9, absorbs the heat of the high-temperature coolant therein, then enters the heater 10, the fourth three-way valve 11 and the warm air core 13, the air flowing through the warm air core is heated in the warm air core, and then flows back to the second water pump 8 through the sixth three-way valve 15, the heat pump air conditioning system 300 exchanges heat with the passenger compartment water heating system 400 through the second condenser 9 to heat the coolant in the passenger compartment water heating system 400, the passenger compartment water heating system 400 further comprises an air conditioner fan 14, and the air conditioner fan 14 drives the air to flow through the warm air core 13, and the air is heated and then enters the passenger compartment.
In an eighth preset operating mode, the power battery temperature control system 100 includes a first water pump 1, a ninth three-way valve 30, a first three-way valve 3, a second three-way valve 4, a second evaporator 5, a power battery 6, and a third three-way valve 7, which are sequentially connected to form a loop.
The low-temperature low-pressure cooling liquid is compressed by the compressor 23 to become high-temperature high-pressure gas, and then flows through the first condenser 2 and the second condenser 9 in sequence, is condensed to release heat in the second condenser 9, heats the cooling liquid flowing through the second condenser, then flows through the fourth electronic expansion valve 24 in a fully open state, flows through the external heat exchanger 25, passes through the second electronic expansion valve 28, is gasified and absorbs heat in the second evaporator 5, cools the cooling liquid flowing through the second evaporator, and finally flows back to the compressor. The first electronic expansion valve 26 and the third electronic expansion valve 29 are in a closed state at this time.
The heat pump air conditioning system 300 exchanges heat with the power battery temperature control system 100 through the second evaporator 5 to cool the coolant in the power battery temperature control system 100.
In the eighth preset operation mode, in the motor cooling system 200, the coolant output from the third water pump 16 flows through the driving motor 17, the seventh three-way valve 18 and the radiator 19, and after being cooled by air in the radiator 19, the coolant flows through the third evaporator 21, the eighth three-way valve 22, finally flows back to the third water pump 16, and enters the driving motor 17 to cool the same.
As a ninth preset working mode, the motor cooling system 200 heats the power battery according to the preset working mode; as shown in fig. 11, the power battery temperature control system 100 includes a first water pump 1, a ninth three-way valve 30, a first three-way valve 3, a second three-way valve 4, a second evaporator 5, a power battery 6, and a third three-way valve 7, which are connected in sequence to form a loop; the motor cooling system 200 includes a third water pump 16, a driving motor 17, a seventh three-way valve 18, a fifth three-way valve 12, a third evaporator 21, and an eighth three-way valve 22, which are connected in sequence to form a loop; the third three-way valve 7 is connected with the third water pump 16, and when the third three-way valve 7 is switched on according to the control signal, the third water pump 16, the driving motor 17, the seventh three-way valve 18, the fifth three-way valve 12, the third evaporator 21, the eighth three-way valve 22, the first water pump 1, the ninth three-way valve 30, the first three-way valve 3, the second three-way valve 4, the second evaporator 5, the power battery 6 and the third three-way valve 7 form a fourth heating loop.
The working principle of the working mode is as follows: the coolant output by the third water pump 16 passes through the driving motor 17, is heated by the driving motor, and then sequentially flows through the seventh three-way valve 18, the fifth three-way valve 12, and the warm air core 13, heats the air flowing through the warm air core 13, sequentially flows through the sixth three-way valve 15, the second water pump 8, the second condenser 9, the heater 10, the fourth three-way valve 11, the third evaporator 21, the eighth three-way valve 22, and finally flows back to the third water pump 16.
In this mode, the heater 10 can also be turned on to heat the passenger compartment by using the waste heat generated by the motor and the heat generated by the heater.
The embodiment of the invention can switch the series connection mode or the independent mode of the power battery temperature control system, the motor cooling system and the passenger compartment water heating system by switching the three-way valve, selectively utilize the heat generated by the power battery, the motor and the heat pump air conditioner to heat the warm air core body of the passenger compartment, the low-temperature power battery and the evaporator of the heat pump air conditioner, can distribute the heat and the cold generated by the heat pump air conditioner into the power battery temperature control system, the motor cooling system and the passenger compartment water heating system by arranging 3 evaporators, 2 condensers and 1 external heat exchanger in the heat pump system, can flexibly utilize the energy of an electric vehicle, uses a large amount of heat originally discharged into the environment for heating, reduces the power consumption of the vehicle, improves the endurance, uses the waste heat of the motor for heating the passenger compartment, the power battery and the heat pump system evaporator, and improves the heating performance of the passenger compartment and the battery, the problem of frosting of the heat pump evaporator at low temperature is also avoided. The waste heat of the battery is used for heating the passenger cabin, the electric energy required by heating is reduced, the passenger cabin and the power battery can be heated by utilizing the heat pump air conditioner, and the energy consumption is greatly reduced compared with that of a traditional electric heater. The heat pump air conditioning system can cool the passenger compartment, the power battery and the motor, so that the vehicle can normally work under the working condition of high temperature and large load, and the performance of the heat pump air conditioning is reduced under the extreme low temperature environment (lower than-20 ℃), and the heating requirements of the passenger compartment and the power battery cannot be met. The embodiment of the invention couples the power battery temperature control system, the motor cooling system, the air-conditioning water heating system and the heat pump air conditioning system, so that the energy can be flexibly transferred among four systems, the waste of the energy is reduced, the energy utilization efficiency of the whole vehicle is improved, and the cruising driving mileage of the electric vehicle is increased.
The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (14)
1. An electric vehicle thermal management system, comprising:
the power battery temperature control system is used for controlling the temperature of the power battery;
the motor cooling system is used for cooling the motor through the radiator;
the first controllable switch is used for connecting or disconnecting the power battery temperature control system and the motor cooling system according to a control signal;
the passenger compartment water heating system is used for controlling the temperature of the passenger compartment;
the second controllable switch is used for connecting or disconnecting the power battery temperature control system and the passenger compartment water heating system according to a control signal;
the third controllable switch is used for connecting or disconnecting the motor cooling system and the passenger compartment water heating system according to a control signal;
the heat pump air conditioning system is used for carrying out heat exchange with at least one of the passenger cabin, the power battery temperature control system, the motor cooling system and the passenger cabin water heating system through a heat exchange device;
the heat pump air-conditioning system exchanges heat with air in the passenger compartment, and the heat is transferred among the four systems by the coupling of any two systems of the power battery temperature control system, the motor cooling system, the passenger compartment water heating system and the heat pump air-conditioning system;
the preset working mode is that the power battery temperature control system and the motor cooling system carry out heating mode on the passenger compartment;
the passenger compartment water heating system comprises a second water pump, a second condenser, a heater, a fourth three-way valve, a fifth three-way valve, a warm air core and a sixth three-way valve which are sequentially connected to form a loop;
the power battery temperature control system comprises a first water pump, a ninth three-way valve, a first three-way valve, a second evaporator, a power battery and a third three-way valve which are sequentially connected to form a loop;
the motor cooling system comprises a third water pump, a driving motor, a seventh three-way valve, a radiator, a third evaporator and an eighth three-way valve which are sequentially connected to form a loop;
the fifth three-way valve is connected with the seventh three-way valve, the sixth three-way valve is connected with the second three-way valve, and the third three-way valve is connected with the third water pump;
when the second three-way valve, the third three-way valve, the fifth three-way valve, the sixth three-way valve, and the seventh three-way valve are turned on according to a control signal, the third water pump, the driving motor, the seventh three-way valve, the fifth three-way valve, the warm air core, the sixth three-way valve, the second water pump, the second condenser, the heater, the fourth three-way valve, the third evaporator, the eighth three-way valve, the first water pump, the ninth three-way valve, the first three-way valve, the second evaporator, the power battery, and the third three-way valve form a first heating circuit;
the passenger compartment water heating system further comprises an air conditioner fan, and the air conditioner fan drives air to flow through the warm air core body and then enter the passenger compartment.
2. The electric vehicle thermal management system of claim 1, wherein the heat pump air conditioning system cools at least one of the passenger compartment, the power cell, and the electric machine according to a preset mode of operation.
3. The electric vehicle thermal management system of claim 2, wherein the predetermined mode of operation is a heat pump air conditioning system cooling the passenger compartment;
the heat pump air conditioning system comprises a compressor, a first condenser, a second condenser, a fourth electronic expansion valve, an external heat exchanger, a first electronic expansion valve and a first evaporator which are sequentially connected to form a loop;
the heat pump air conditioning system also comprises an air conditioning fan which is used for driving air to flow through the evaporator and then enter the passenger compartment.
4. The electric vehicle thermal management system of claim 2, wherein the preset operating mode is a cooling mode in which the heat pump air conditioning system cools both the passenger compartment and the power battery;
the heat pump air conditioning system comprises a compressor, a first condenser, a second condenser, a fourth electronic expansion valve, an external heat exchanger, a first electronic expansion valve and a first evaporator which are sequentially connected to form a loop;
the power battery temperature control system comprises a first water pump, a ninth three-way valve, a first three-way valve, a second evaporator, a power battery and a third three-way valve which are sequentially connected to form a loop;
the heat pump air-conditioning system also comprises a second electronic expansion valve and an air-conditioning fan, wherein the first end of the second electronic expansion valve is connected with the second evaporator, and the second end of the second electronic expansion valve is connected with the external heat exchanger;
the heat pump air conditioning system drives air to flow through the evaporator through the air conditioning fan and then enter the passenger compartment, and when the second electronic expansion valve is conducted, heat exchange is carried out between the second evaporator and the power battery temperature control system.
5. The electric vehicle thermal management system of claim 4, wherein the preset operating modes further comprise a motor cooling mode;
the motor cooling system comprises a third water pump, a driving motor, a seventh three-way valve, a radiator, a third evaporator and an eighth three-way valve which are sequentially connected to form a loop;
and the radiator cools the driving motor after cooling the cooling liquid.
6. The electric vehicle thermal management system of claim 2, wherein the preset operating mode is a mode in which the heat pump air conditioning system simultaneously cools the passenger compartment, the power battery, and the motor;
the heat pump air conditioning system comprises a compressor, a first condenser, a second condenser, a fourth electronic expansion valve, an external heat exchanger, a first electronic expansion valve and a first evaporator which are sequentially connected to form a loop;
the power battery temperature control system comprises a first water pump, a ninth three-way valve, a first three-way valve, a second evaporator, a power battery and a third three-way valve which are sequentially connected to form a loop;
the motor cooling system comprises a third water pump, a driving motor, a seventh three-way valve, a radiator, a third evaporator and an eighth three-way valve which are sequentially connected to form a loop;
the heat management system also comprises a third evaporator and a third electronic expansion valve, wherein the first end of the third electronic expansion valve is connected with the second end of the second electronic expansion valve, and the second end of the third electronic expansion valve is connected with the third evaporator;
the heat pump air conditioning system drives air to flow through the evaporator through the air conditioning fan and then enter the passenger compartment, exchanges heat with the power battery temperature control system through the first condenser and the second evaporator, and exchanges heat with the motor cooling system through the third evaporator and the third electronic expansion valve.
7. The electric vehicle thermal management system of claim 1, wherein the heat pump air conditioning system heats at least one of the passenger compartment and the power cell according to a preset mode of operation.
8. The electric vehicle thermal management system of claim 7, wherein the predetermined operating mode is a heating mode of the heat pump air conditioning system for a power battery and a passenger compartment;
the heat pump air conditioning system comprises a compressor, a first condenser, a second condenser, a fourth electronic expansion valve, an external heat exchanger, a first electronic expansion valve and a first evaporator which are sequentially connected to form a loop;
the passenger compartment water heating system comprises a second water pump, a second condenser, a heater, a fourth three-way valve, a fifth three-way valve, a warm air core and a sixth three-way valve which are sequentially connected to form a loop;
the power battery temperature control system comprises a first water pump, a ninth three-way valve, a first three-way valve, a second evaporator, a power battery and a third three-way valve which are sequentially connected to form a loop;
the motor cooling system comprises a third water pump, a driving motor, a seventh three-way valve, a radiator, a third evaporator and an eighth three-way valve which are sequentially connected to form a loop;
the heat pump air conditioning system drives air to flow through the evaporator through the air conditioning fan and then enter the passenger compartment, and heat exchange is carried out between the heat pump air conditioning system and the power battery temperature control system through the first condenser and the second evaporator.
9. The electric vehicle thermal management system of claim 1, wherein at least one of the power battery temperature control system, the motor cooling system, and the heat pump air conditioning system heats a passenger compartment according to a preset operating mode.
10. The electric vehicle thermal management system of claim 9, wherein the preset operating mode is a heating mode of the passenger compartment by the power battery temperature control system;
the passenger compartment water heating system comprises a second water pump, a second condenser, a heater, a fourth three-way valve, a warm air core and a sixth three-way valve which are sequentially connected to form a loop;
the power battery temperature control system comprises a first water pump, a ninth three-way valve, a first three-way valve, a second evaporator, a power battery and a third three-way valve which are sequentially connected to form a loop;
the sixth three-way valve is connected with the second three-way valve, and when the second three-way valve and the sixth three-way valve are switched on according to a control signal, the power battery, the third three-way valve, the first water pump, the ninth three-way valve, the first three-way valve, the second water pump, the second condenser, the heater, the fourth three-way valve, the warm air core, the sixth three-way valve, the second three-way valve and the second evaporator form a second heating loop;
the passenger cabin water heating system further comprises an air conditioner fan, and the air conditioner fan drives air to flow through the warm air core body and then enter the passenger cabin.
11. The electric vehicle thermal management system of claim 9, wherein the predetermined mode of operation is a heating mode of the electric motor cooling system for the passenger compartment;
the passenger compartment water heating system comprises a second water pump, a second condenser, a heater, a fourth three-way valve, a fifth three-way valve, a warm air core and a sixth three-way valve which are sequentially connected to form a loop;
the motor cooling system comprises a third water pump, a driving motor, a seventh three-way valve, a third evaporator and an eighth three-way valve which are sequentially connected to form a loop;
the fifth three-way valve is connected with a seventh three-way valve, and when the fifth three-way valve and the seventh three-way valve are switched on according to a control signal, the third water pump, the driving motor, the seventh three-way valve, the fifth three-way valve, the warm air core, the sixth three-way valve, the second water pump, the second condenser, the heater, the fourth three-way valve, the third evaporator and the eighth three-way valve form a third heating loop.
12. The electric vehicle thermal management system of claim 9, wherein the preset operating mode is a heat pump air conditioning system heating mode of a passenger compartment;
the heat pump air conditioning system comprises a compressor, a first condenser, a second condenser, a fourth electronic expansion valve, an external heat exchanger, a first electronic expansion valve and a first evaporator which are sequentially connected to form a loop;
the passenger compartment water heating system comprises a second water pump, a second condenser, a heater, a fourth three-way valve, a warm air core body and a sixth three-way valve which are sequentially connected to form a loop;
the heat pump air conditioning system exchanges heat with the passenger compartment water heating system through the second condenser to heat the coolant in the passenger compartment water heating system;
the passenger compartment water heating system further comprises an air conditioner fan, and the air conditioner fan drives air to flow through the warm air core body and then enter the passenger compartment.
13. The electric vehicle thermal management system of claim 12, wherein the power battery temperature control system comprises a first water pump, a ninth three-way valve, a first three-way valve, a second evaporator, a power battery, and a third three-way valve connected in sequence to form a loop;
the heat pump air conditioning system exchanges heat with the power battery temperature control system through the second evaporator so as to cool the cooling liquid in the power battery temperature control system.
14. The electric vehicle thermal management system of claim 1, wherein the motor cooling system heats the power battery according to a preset operating mode;
the power battery temperature control system comprises a first water pump, a ninth three-way valve, a first three-way valve, a second evaporator, a power battery and a third three-way valve which are sequentially connected to form a loop;
the motor cooling system comprises a third water pump, a driving motor, a seventh three-way valve, a fifth three-way valve, a third evaporator and an eighth three-way valve which are sequentially connected to form a loop;
the third three-way valve is connected with the third water pump, and when the third three-way valve and the third water pump are switched on according to a control signal, the third water pump, the driving motor, the seventh three-way valve, the fifth three-way valve, the third evaporator, the eighth three-way valve, the first water pump, the ninth three-way valve, the first three-way valve, the second evaporator, the power battery and the third three-way valve form a fourth heating loop.
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| CN109560307A (en) * | 2018-02-07 | 2019-04-02 | 骆驼集团武汉光谷研发中心有限公司 | A kind of fuel cell cooling fin |
| CN112549901A (en) * | 2020-12-01 | 2021-03-26 | 恒大恒驰新能源汽车研究院(上海)有限公司 | Thermal management method and thermal management system for vehicle |
| CN114590096A (en) * | 2021-03-31 | 2022-06-07 | 长城汽车股份有限公司 | Thermal management system and automobile |
| CN113400890B (en) * | 2021-06-30 | 2022-08-30 | 东风汽车集团股份有限公司 | Heat pump type heat management system for electric automobile |
| CN113400893B (en) * | 2021-07-28 | 2023-01-03 | 奇瑞汽车股份有限公司 | Thermal management system, method and device for automobile |
| CN113682106B (en) * | 2021-09-01 | 2023-06-23 | 东风柳州汽车有限公司 | Vehicle thermal management control method and device |
| CN113682107B (en) * | 2021-09-30 | 2023-07-25 | 岚图汽车科技有限公司 | New energy automobile whole car thermal management system |
| CN113954601B (en) * | 2021-11-15 | 2024-04-09 | 安徽江淮汽车集团股份有限公司 | Heat management system of new energy electric automobile |
| CN114094137B (en) * | 2021-11-22 | 2023-09-15 | 北京福田戴姆勒汽车有限公司 | Thermal management system of vehicle and vehicle |
| CN114056052B (en) * | 2021-12-14 | 2024-03-22 | 智己汽车科技有限公司 | Electric automobile thermal management loop, control method and pure electric vehicle |
| CN114347752A (en) * | 2022-01-14 | 2022-04-15 | 中国第一汽车股份有限公司 | Pure electric vehicle thermal management system and control method thereof |
| CN114614144B (en) * | 2022-03-10 | 2023-11-10 | 海信集团控股股份有限公司 | hybrid electric vehicle |
| CN117246093A (en) * | 2022-06-09 | 2023-12-19 | 华为技术有限公司 | Thermal management system and vehicle |
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| JP5533516B2 (en) * | 2010-09-30 | 2014-06-25 | 株式会社デンソー | Air conditioner for vehicles |
| CN106314066B (en) * | 2015-06-17 | 2020-01-31 | 杭州三花研究院有限公司 | vehicle energy management system and control method thereof |
| CN108482067B (en) * | 2018-05-21 | 2019-11-29 | 上海思致汽车工程技术有限公司 | A kind of energy-saving multiloop thermal management system of electric automobile |
| CN108705915A (en) * | 2018-08-02 | 2018-10-26 | 威马智慧出行科技（上海）有限公司 | A kind of heat management system for electric vehicle |
| CN108749517A (en) * | 2018-08-02 | 2018-11-06 | 威马智慧出行科技（上海）有限公司 | A kind of heat management system of electric vehicle |
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