CN116160818A - Automobile heat management system and automobile - Google Patents

Automobile heat management system and automobile Download PDF

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Publication number
CN116160818A
CN116160818A CN202310075724.1A CN202310075724A CN116160818A CN 116160818 A CN116160818 A CN 116160818A CN 202310075724 A CN202310075724 A CN 202310075724A CN 116160818 A CN116160818 A CN 116160818A
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CN
China
Prior art keywords
branch
output end
input
input end
output
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310075724.1A
Other languages
Chinese (zh)
Inventor
罗棚
成涛
梁宗峰
常健
张尔新
胡林
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.)
Chongqing Seres New Energy Automobile Design Institute Co Ltd
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Chongqing Seres New Energy Automobile Design Institute Co Ltd
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Application filed by Chongqing Seres New Energy Automobile Design Institute Co Ltd filed Critical Chongqing Seres New Energy Automobile Design Institute Co Ltd
Priority to CN202310075724.1A priority Critical patent/CN116160818A/en
Publication of CN116160818A publication Critical patent/CN116160818A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
    • B60H1/00278—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit for the battery
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00357—Air-conditioning arrangements specially adapted for particular vehicles
    • B60H1/00385—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell
    • B60H1/00392—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell for electric vehicles having only electric drive means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00485—Valves for air-conditioning devices, e.g. thermostatic valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
    • B60L58/26—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
    • B60L58/27—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by heating
    • 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

Abstract

The application provides a car thermal management system and car, thermal management system includes: the low-temperature radiator is connected in series in the motor cooling branch, the five-way valve is provided with a first end, a second end, a third end, a fourth end and a fifth end, the first end is connected with the first input end of the battery cooling branch, the second end is connected with the first output end of the battery cooling branch, the third end is connected with the fourth input end of the first straight-through branch, the fourth end is connected with the second input end of the motor cooling branch, and the fifth end is connected with the second output end of the motor cooling branch; when the battery needs to be heated, the five-way valve is switched to a first state, the battery cooling branch is communicated with the motor cooling branch, and the heat of the motor cooling branch is used for heating the battery, so that the cost and the energy consumption are reduced, and the cruising time of the vehicle is improved; meanwhile, the five-way valve is adopted for connection, so that the arrangement of branches is reduced, the arrangement of a cabin is simplified, and the cabin space is saved.

Description

Automobile heat management system and automobile
Technical Field
The present disclosure relates generally to the field of thermal management, and more particularly, to an automotive thermal management system and an automobile.
Background
The automobile thermal management system is from the system integration point of view, so that: the heat among the motor, the battery, the passenger cabin and the ambient air is effectively transferred through the heat exchanger by the three mediums of cooling liquid, cooling medium and air, so that the energy utilization rate is increased, and the energy consumption is reduced.
The existing power battery heating devices of the pure electric vehicles are mostly high-voltage PTC heaters, and the heating devices, the water pipes and the valves are more in number, so that the arrangement in the engine room is complex, the consumed cost and energy consumption are higher, and the whole vehicle endurance mileage is affected.
Disclosure of Invention
In view of the foregoing drawbacks or shortcomings of the prior art, it is desirable to provide an automotive thermal management system and an automobile that address the foregoing technical problems.
A first aspect of the present application provides an automotive thermal management system comprising: the device comprises a battery cooling branch, a motor cooling branch and a five-way valve for switching the communication state of the battery cooling branch and the motor cooling branch;
the battery cooling branch is used for providing a cooling medium for the battery; the battery cooling branch circuit is provided with a first output end and a first input end which are mutually separated;
the motor cooling branch is used for providing cooling medium for the motor, and is provided with a second output end and a second input end which are mutually separated; the low-temperature radiator is connected in series in the motor cooling branch, and is provided with a third input end and a third output end, and the third input end is communicated with the second input end;
the first through branch circuit is provided with a fourth input end and a fourth output end; the fourth output end is communicated with the third output end;
the five-way valve is provided with a first end, a second end, a third end, a fourth end and a fifth end, wherein the first end is connected with the first input end, the second end is connected with the first output end, the third end is connected with the fourth input end, the fourth end is connected with the second input end, and the fifth end is connected with the second output end;
the five-way valve has a first state and a second state; when the battery cooling branch is in a first state, the first end is communicated with the fifth end, the second end is communicated with the third end, the fourth end is cut off, and the battery cooling branch is communicated with the motor cooling branch; when in the second state, the first end is communicated with the second end, the fourth end is communicated with the fifth end, the third end is cut off, and the battery cooling branch is not communicated with the motor cooling branch.
According to the technical scheme that this application embodiment provided, motor cooling branch road is including the first water pump, the machine module that charges, first motor, second water pump, the second motor that establish ties in proper order, the output of second motor with the fifth end is connected, low temperature radiator establishes ties and sets up the input of first water pump with between the fourth end.
According to the technical scheme provided by the embodiment of the application, the battery cooling branch comprises:
a cooler having a fifth input, a fifth output, a sixth input, a sixth output; the fifth output end is connected with the second end of the five-way valve;
the battery package water-cooling board, the input of battery package water-cooling board with the first end of five-way valve is connected, the output of battery package water-cooling board is connected with the fourth water pump, the output of fourth water pump with the fifth input is connected.
According to the technical scheme provided by the embodiment of the application, the battery heat exchange branch and the heat dissipation branch exchange heat through the condenser, wherein the condenser is provided with a seventh input end, a seventh output end, an eighth input end and an eighth output end;
the battery heat exchange branch circuit includes: the device comprises a compressor, a first coaxial tube, a second coaxial tube, a first electronic expansion valve and the cooler; the first coaxial tube is provided with a ninth input end, a ninth output end, a tenth input end and a tenth output end; the second coaxial pipe is provided with an eleventh input end, an eleventh output end, a twelfth input end and a twelfth output end; the output end of the compressor is connected with the seventh input end, the seventh output end is connected with the ninth input end, the ninth output end is connected with the eleventh input end, the eleventh output end is connected with the first electronic expansion valve, the output end of the first electronic expansion valve is connected with the sixth input end of the cooler, the sixth output end of the cooler is connected with the twelfth input end, the twelfth output end is connected with the tenth input end, and the tenth output end is connected with the input end of the compressor;
the heat dissipation branch circuit includes: a third water pump and the low-temperature radiator; the output end of the third water pump is connected with the eighth input end, the eighth output end is connected with the third input end, and the third output end is connected with the input end of the third water pump.
According to the technical scheme provided by the embodiment of the application, a first three-way valve is arranged between the heat dissipation branch and the motor cooling branch and is used for switching the communication state of the low-temperature radiator, the heat dissipation branch and the motor cooling branch;
the first three-way valve is provided with a sixth end, a seventh end and an eighth end, the sixth end is connected with the third output end of the low-temperature radiator, the seventh end is connected with the input end of the first water pump, and the eighth end is connected with the input end of the third water pump;
the first three-way valve is provided with a third state and a fourth state, when the first three-way valve is in the third state, the sixth end is communicated with the seventh end, and the low-temperature radiator is communicated with the motor cooling branch; and when the radiator is in the fourth state, the sixth end is communicated with the eighth end, and the low-temperature radiator is communicated with the radiating branch.
According to the technical scheme provided by the embodiment of the application, the eleventh output end of the second coaxial pipe is further connected with a second electronic expansion valve, the output end of the second electronic expansion valve is connected with an evaporator, the output end of the evaporator is connected with the twelfth input end of the second coaxial pipe, and the evaporator is used for cooling the passenger cabin;
the refrigerant control device comprises an evaporator, a compressor, a first refrigerant stop valve and a second refrigerant stop valve, wherein the first refrigerant stop valve is arranged between the evaporator and the compressor and is used for cutting off refrigerant between the evaporator and the compressor.
According to the technical scheme provided by the embodiment of the application, a passenger cabin heating branch and a passenger cabin heating heat exchange branch;
the passenger compartment heating branch includes:
the input end of the water heating core body is connected with the eighth output end, and the output end of the water heating core body is connected with the input end of the third water pump;
the passenger cabin heating heat exchange branch comprises: the device comprises an external evaporation condenser and a thermal expansion valve, wherein the input end of the thermal expansion valve is connected with the output end of the evaporator, the output end of the thermal expansion valve is connected with the input end of the external evaporation condenser, and the output end of the external evaporation condenser is connected with the tenth input end of the first coaxial tube.
According to the technical scheme provided by the embodiment of the application, a second three-way valve is arranged between the heat dissipation branch and the passenger cabin heating branch and is used for switching the communication state of the heat dissipation branch and the passenger cabin heating branch;
the second three-way valve is provided with a ninth end, a tenth end and a tenth end, the ninth end is connected with the eighth output end, the tenth end is connected with the input end of the water heating core, and the tenth end is connected with the third input end;
the second three-way valve is provided with a fifth state and a sixth state, when the second three-way valve is in the fifth state, the ninth end is communicated with the tenth end, and the passenger cabin heating branch is in a working state; when in the sixth state, the ninth end is communicated with the eleventh end, and the heat dissipation branch is in a working state.
According to the technical scheme provided by the embodiment of the application, the defrosting branch comprises: and the second refrigerant stop valve is arranged in parallel with the thermal expansion valve, and when the second refrigerant stop valve is opened, the compressor, the water-cooled condenser, the evaporator, the second refrigerant stop valve and the external evaporation condenser are sequentially connected in series to form the defrosting branch.
A second aspect of the present application provides an automobile comprising a thermal management system as described above.
The beneficial effects of this application lie in:
the present application provides an automotive thermal management system, the thermal management system comprising: the battery cooling branch circuit comprises a battery cooling branch circuit, a motor cooling branch circuit, a first straight-through branch circuit and a five-way valve for switching the communication state of the battery cooling branch circuit and the motor cooling area branch circuit, wherein the battery cooling branch circuit is provided with a first output end and a first input end which are mutually separated, and the motor cooling branch circuit is provided with a second output end and a second input end which are mutually separated; the low-temperature radiator is connected in series in the motor cooling branch, and is provided with a third input end and a third output end, and the third input end is communicated with the second input end; the first straight-through branch is provided with a fourth input end and a fourth output end, and the fourth output end is communicated with the third output end; the five-way valve is provided with a first end, a second end, a third end, a fourth end and a fifth end, wherein the first end is connected with the first input end, the second end is connected with the first output end, the third end is connected with the fourth input end, the fourth end is connected with the second input end, and the fifth end is connected with the second output end; the five-way valve has a first state and a second state;
based on the technical scheme, when the battery needs to be heated, the five-way valve is switched to a first state, at the moment, the first end is communicated with the fifth end, the second end is communicated with the third end, the fourth end is cut off, the battery cooling branch is communicated with the motor cooling branch, and the heat of the motor cooling branch is used for heating the battery, so that the cost and the energy consumption are reduced, and the vehicle endurance is improved; meanwhile, the five-way valve is adopted for connection, so that the arrangement of branches is reduced, the arrangement of a cabin is simplified, and the cabin space is saved.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the following drawings, in which:
FIG. 1 is an overall schematic diagram of an automotive thermal management system of the present application;
FIG. 2 is a schematic diagram of a battery heating mode in the present application;
FIG. 3 is a schematic diagram of a battery cooling mode in the present application;
FIG. 4 is a schematic diagram of a passenger compartment cooling mode in the present application;
FIG. 5 is a schematic diagram of a passenger compartment heating mode in the present application;
FIG. 6 is a schematic diagram of a defrost mode in the present application;
FIG. 7 is a schematic diagram of a motor cooling mode in the present application;
in the figure: 1. a first water pump; 2. a charger module; 3. a first motor; 4. a second water pump; 5. a second motor; 6. a five-way valve; 7. a battery pack cold water plate; 8. a fourth water pump; 9. a cooler; 10. a compressor; 11. a condenser; 12. a third water pump; 13. a second three-way valve; 14. a water heating core; 15. a first coaxial tube; 16. a second coaxial pipe; 17. a second electronic expansion valve; 18. an evaporator; 19. a first electronic expansion valve; 20. a first refrigerant shut-off valve; 21. a thermal expansion valve; 22. a second refrigerant shut-off valve; 23. an external evaporative condenser; 24. a low temperature heat sink; 25. a first three-way valve; 26. a high pressure water heater; 27. a motor kettle.
Detailed Description
The present application is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the invention are shown in the drawings.
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Example 1
Please refer to fig. 1, which is a schematic diagram of an automotive thermal management system provided in the present application, comprising: the battery cooling branch circuit, the motor cooling branch circuit and the five-way valve 6 are used for switching the communication states of the battery cooling branch circuit and the motor cooling branch circuit;
the battery cooling branch is used for providing a cooling medium for the battery; the battery cooling branch circuit is provided with a first output end and a first input end which are mutually separated;
the motor cooling branch is used for providing cooling medium for the motor, and is provided with a second output end and a second input end which are mutually separated; a low-temperature radiator 24 is connected in series in the motor cooling branch, the low-temperature radiator 24 is provided with a third input end and a third output end, and the third input end is communicated with the second input end;
the first through branch circuit is provided with a fourth input end and a fourth output end; the fourth output end is communicated with the third output end;
the five-way valve 6 has a first end, a second end, a third end, a fourth end and a fifth end, wherein the first end is connected with the first input end, the second end is connected with the first output end, the third end is connected with the fourth input end, the fourth end is connected with the second input end, and the fifth end is connected with the second output end;
the five-way valve 6 has a first state and a second state; when the battery cooling branch is in a first state, the first end is communicated with the fifth end, the second end is communicated with the third end, the fourth end is cut off, and the battery cooling branch is communicated with the motor cooling branch; when in the second state, the first end is communicated with the second end, the fourth end is communicated with the fifth end, the third end is cut off, and the battery cooling branch is not communicated with the motor cooling branch.
The state of the motor cooling branch and the state of the battery cooling branch are switched by adopting the five-way valve 6, when the battery needs to be heated, the five-way valve 6 is switched to a first state, at the moment, the first end is communicated with the fifth end, the second end is communicated with the third end, the fourth end is cut off, the battery cooling branch is communicated with the motor cooling branch, and heat emitted by the motor in the motor cooling branch is used for heating the battery, so that the cost and the energy consumption are reduced, and the vehicle endurance is improved; meanwhile, the five-way valve 6 is adopted for connection, so that the arrangement of branches is reduced, the arrangement of a cabin is simplified, and the cabin space is saved;
when the battery is not required to be heated, the five-way valve 6 is switched to a second state, at the moment, the first end is communicated with the second end, the fourth end is communicated with the fifth end, the third end is cut off, at the moment, the battery cooling branch is not communicated with the motor cooling branch, and heat emitted by the motor is emitted through the low-temperature radiator 24;
specifically, as shown in fig. 1, a is a first end; b is a second end; c is a third end; d is a fourth end; e is the fifth end;
in some embodiments, the motor cooling branch comprises a first water pump 1, a charger module 2, a first motor 3, a second water pump 4 and a second motor 5 which are sequentially arranged in series, an output end of the second motor 5 is connected with the fifth end, and the low-temperature radiator 24 is arranged between an input end of the first water pump 1 and the fourth end in series.
Specifically, as shown in fig. 7, the working principle of the motor cooling branch is as follows:
the first water pump 1 and the second water pump 4 are started, the first water pump 1 enables cooling liquid to flow rapidly in the motor cooling branch, the cooling liquid cools the charger module 2, the first motor 3 and the second motor 5, heat of the charger module 2, the first motor 3 and the second motor 5 is taken away, at the moment, the five-way valve 6 is switched to a second state, the first end is communicated with the second end, the fourth end is communicated with the fifth end, the third end is cut off, and the cooling liquid returns to the first water pump 1 to continue circulating after radiating heat through the low-temperature radiator 24; through the above process, after the heat of the charging module 2, the first motor 3 and the second motor 5 is taken away by the cooling liquid in the branch, the low-temperature radiator 24 radiates heat, so as to realize cooling of the motor branch.
In certain embodiments, the battery cooling branch comprises:
a cooler 9, the cooler 9 having a fifth input, a fifth output, a sixth input, a sixth output; the fifth output end is connected with the second end of the five-way valve 6;
the battery package water-cooling board 7, the input of battery package water-cooling board 7 with the first end of five-way valve 6 is connected, the output of battery package water-cooling board 7 is connected with fourth water pump 8, the output of fourth water pump 8 with the fifth input is connected.
Specifically, as shown in fig. 2, the operating principle of the battery heating mode is:
the first water pump 1 and the second water pump 4 are started, the first water pump 1 enables cooling liquid to flow rapidly in the motor cooling branch, the cooling liquid cools the charger module 2, the first motor 3 and the second motor 5, heat of the charger module 2, the first motor 3 and the second motor 5 is taken away, at the moment, the five-way valve 6 is switched to a first state, the first end is communicated with the fifth end, the second end is communicated with the third end, the fourth end is cut off, heat of the motor is used for heating the battery pack water cooling plate 7, after heating is completed, the heat returns to the first water pump 1 through the cooler 9 and the five-way valve 6, and circulation is continued through the fourth output end; the five-way valve 6 is adopted to communicate the battery cooling branch with the motor cooling branch through the flow, and heat emitted by the motor in the motor cooling branch is used for heating the battery, so that the cost and the energy consumption are reduced, and the duration of the vehicle is improved; meanwhile, the five-way valve 6 is adopted for connection, so that the arrangement of branches is reduced, the arrangement of a cabin is simplified, and the cabin space is saved.
In some embodiments, the heat exchange branch of the battery and the heat dissipation branch of the battery exchange heat by the condenser 11, the condenser 11 has a seventh input end, a seventh output end, an eighth input end and an eighth output end;
the battery heat exchange branch circuit includes: a compressor 10, a first coaxial pipe 15, a second coaxial pipe 16, a first electronic expansion valve 19, and the cooler 9; the first coaxial pipe 15 has a ninth input end, a ninth output end, a tenth input end, and a tenth output end; the second coaxial pipe 16 has an eleventh input, an eleventh output, a twelfth input, and a twelfth output; the output end of the compressor 10 is connected with the seventh input end, the seventh output end is connected with the ninth input end, the ninth output end is connected with the eleventh input end, the eleventh output end is connected with the first electronic expansion valve 19, the output end of the first electronic expansion valve 19 is connected with the sixth input end of the cooler 9, the sixth output end of the cooler 9 is connected with the twelfth input end, the twelfth output end is connected with the tenth input end, and the tenth output end is connected with the input end of the compressor 10;
the heat dissipation branch circuit includes: a third water pump 12 and the low-temperature radiator 24; the output end of the third water pump 12 is connected with the eighth input end, the eighth output end is connected with the third input end, and the third output end is connected with the input end of the third water pump 12.
Specifically, the first coaxial pipe 15 and the second coaxial pipe 16 integrate the high-pressure pipe and the low-pressure pipe into a pipeline, meanwhile, the respective flow passages are reserved, the central axes of the two flow passages are kept coaxial, the full energy exchange of the refrigerant is ensured when the pipeline circulates, and the refrigeration efficiency is improved;
specifically, as shown in fig. 3, the battery cooling mode operates on the following principle:
the battery cooling branch, the battery heat exchange branch and the heat dissipation branch are matched together to cool the battery;
firstly, the compressor 10 outputs a high-temperature and high-pressure refrigerant, and simultaneously starts the third water pump 12, the third water pump 12 enables the cooling liquid to flow in the heat dissipation branch, the refrigerant exchanges heat with the cooling liquid through the condenser 11, at this time, the refrigerant passes through the first coaxial pipe 15 and the second coaxial pipe 16 to reach the first electronic expansion valve 19, the first electronic expansion valve 19 is used for reducing pressure and absorbing heat of the refrigerant, so that a low-temperature and low-pressure refrigerant is output, then the refrigerant is input into the cooler 9 through the sixth input end, at this time, the fourth water pump 8 in the battery cooling branch enables the cooling liquid to flow in the battery cooling branch quickly, then the refrigerant flowing in the cooler 9 is cooled through the fifth input end, and the cooled refrigerant is cooled by the cooling liquid;
the cooling liquid of the heat dissipation branch flows into the low-temperature radiator 24 after being output from the condenser 11, and the cooling liquid is returned to the third water pump 12 from the third output end for continuous circulation after the low-temperature radiator 24 dissipates the heat of the cooling liquid.
In some embodiments, a first three-way valve 25 is disposed between the heat dissipation branch and the motor cooling branch, and the first three-way valve 25 is used for switching the communication state between the low-temperature radiator 24 and the heat dissipation branch and the motor cooling branch;
the first three-way valve 25 has a sixth end connected to the third output end of the low-temperature radiator 24, a seventh end connected to the input end of the first water pump 1, and an eighth end connected to the input end of the third water pump 12;
the first three-way valve 25 has a third state in which the sixth end is in communication with the seventh end and a fourth state in which the low-temperature radiator 24 is in communication with the motor cooling branch; in the fourth state, the sixth end is in communication with the eighth end, and the low-temperature radiator 24 is in communication with the radiating branch.
Specifically, as shown in fig. 1, in the figure: f is the sixth end; g is the seventh end; h is the eighth end;
specifically, the first three-way valve 25 is used to switch the communication state between the low-temperature radiator 24 and the heat dissipation branch and between the low-temperature radiator 24 and the motor cooling branch, when the motor cooling branch is running, the first three-way valve 25 is switched to a third state, the sixth end is communicated with the seventh end, at this time, the third output end of the low-temperature radiator 24 is communicated with the input end of the first water pump 1, at this time, the low-temperature radiator 24 is used to dissipate heat of the cooling liquid in the battery cooling branch, so that the cooling liquid circulates in the battery cooling branch;
when the heat dissipation branch is in operation, the first three-way valve 25 is switched to a fourth state, the sixth end is communicated with the eighth end, at this time, the third output end of the low-temperature radiator 24 is connected to the input end of the third water pump 12, and the low-temperature radiator 24 is used for dissipating heat of the cooling liquid in the heat dissipation branch, so that the cooling liquid circularly flows in the heat dissipation branch.
In some embodiments, a second electronic expansion valve 17 is further connected to the eleventh output end of the second coaxial pipe 16, an evaporator 18 is connected to the output end of the second electronic expansion valve 17, the output end of the evaporator 18 is connected to the twelfth input end of the second coaxial pipe 16, and the evaporator 18 is used for cooling the passenger cabin;
a first refrigerant stop valve 20 is disposed between the evaporator 18 and the compressor 10, and the first refrigerant stop valve 20 is used for cutting off the refrigerant between the evaporator 18 and the compressor 10.
Specifically, as shown in fig. 4, the working principle of the passenger cabin refrigeration mode is as follows:
the compressor 10 outputs a high-temperature and high-pressure refrigerant, at this time, the first three-way valve 25 is switched to a fourth state, the heat dissipation branch is communicated, the cooling liquid flows in the heat dissipation branch rapidly, the refrigerant exchanges heat with the cooling liquid through the condenser 11, at this time, the refrigerant passes through the first coaxial pipe 15 and the second coaxial pipe 16 to reach the second electronic expansion valve 17, the first electronic expansion valve 19 is used for reducing pressure and absorbing heat to the refrigerant, so that the refrigerant with low temperature and low pressure is output to the evaporator 18, the evaporator 18 converts the refrigerant from liquefaction into gasification, and the air conditioner in the passenger cabin outputs the cooled gas to the passenger cabin to cool the passenger cabin.
In certain embodiments, a passenger compartment heating branch and a passenger compartment heating heat exchange branch;
the passenger compartment heating branch includes:
the water heating core 14, the input end of the water heating core 14 is connected with the eighth output end, and the output end of the water heating core 14 is connected with the input end of the third water pump 12;
the passenger cabin heating heat exchange branch comprises: the external evaporation condenser 23 and the thermal expansion valve 21, the input end of the thermal expansion valve 21 is connected with the output end of the evaporator 18, the output end of the thermal expansion valve 21 is connected with the input end of the external evaporation condenser 23, and the output end of the external evaporation condenser 23 is connected with the tenth input end of the first coaxial tube 15.
Specifically, as shown in fig. 5, the working principle of the passenger compartment heating mode is as follows:
the passenger cabin heating branch circuit and the passenger cabin heating heat exchange branch circuit are matched together to heat the passenger cabin;
the compressor 10 outputs a high-temperature and high-pressure refrigerant, and simultaneously starts the third water pump 12, the third water pump 12 enables a cooling liquid to flow in the heat dissipation branch, the refrigerant exchanges heat with the cooling liquid through the condenser 11, the temperature of the cooling liquid rises, the cooling liquid flows into the water heating core 14, a fan is arranged beside the water heating core 14, and the fan conveys the heat of the cooling liquid in the water heating core 14 into the passenger cabin to heat the passenger cabin;
meanwhile, the refrigerant passes through the first coaxial pipe 15 and the second coaxial pipe 16 to reach the second electronic expansion valve 17, the second electronic expansion valve 17 is used for reducing pressure and absorbing heat to the refrigerant, so that the refrigerant with low temperature and low pressure is output to the evaporator 18, the evaporator 18 converts the refrigerant into gasification from liquefaction, then the gasified refrigerant is heated by the thermal expansion valve 21, and the heated refrigerant enters the external evaporation condenser 23 to convert the refrigerant into liquefaction from gasification and is conveyed to the compressor 10 through the first coaxial pipe 15 for internal circulation flow;
in some embodiments, a high-pressure water heater 26 is arranged at the eighth output end of the condenser 11 and connected with the input end of the water heating system; when the temperature is lower than 15 ℃ below zero, the passenger cabin heating heat exchange branch does not work at this time, and the cooling liquid in the passenger cabin heating branch is heated and warmed through the high-pressure water heater 26, and the water heating core 14 conveys heat into the passenger cabin to cool the passenger cabin.
In some embodiments, a second three-way valve 13 is arranged between the heat radiating branch and the passenger cabin heating branch, and the second three-way valve 13 is used for switching the communication state of the heat radiating branch and the passenger cabin heating branch;
the second three-way valve 13 has a ninth end, a tenth end and a tenth end, the ninth end is connected to the eighth output end, the tenth end is connected to the input end of the water heating core 14, and the tenth end is connected to the third input end;
the second three-way valve 13 has a fifth state and a sixth state, and in the fifth state, the ninth end is communicated with the tenth end, and the passenger compartment heating branch is in a working state; when in the sixth state, the ninth end is communicated with the eleventh end, and the heat dissipation branch is in a working state.
Specifically, as shown in fig. 1, in the figure: i is a ninth end; j is the tenth end; k is the tenth end;
specifically, the second three-way valve 13 is adopted to switch the communication state of the heat dissipation branch and the passenger cabin heating branch;
when the passenger cabin is required to be refrigerated or the battery is required to be refrigerated, the heat dissipation branch is operated, at this time, the second three-way valve 13 is in a sixth state, the ninth end is communicated with the eleventh end, at this time, the eighth output end of the condenser 11 is connected with the third input end of the low-temperature radiator 24, and the warmed cooling liquid dissipates heat through the low-temperature radiator 24;
when the passenger cabin needs to be heated, the passenger cabin heating branch circuit runs, at this time, the second three-way valve 13 is in a fifth state, the ninth end is communicated with the tenth end, the eighth output end of the condenser 11 is connected with the input end of the water heating core 14, and the warmed cooling liquid emits heat through the water heating core 14 to warm the passenger cabin.
In certain embodiments, a defrosting branch comprising: and a second refrigerant stop valve 22 arranged in parallel with the thermal expansion valve 21, wherein when the second refrigerant stop valve 22 is opened, the compressor 10, the water-cooled condenser 11, the evaporator 18, the second refrigerant stop valve 22 and the external evaporation condenser 23 are sequentially connected in series to form the defrosting branch.
Specifically, when the temperature reaches below zero, the surface of the external evaporative condenser 23 is frosted, and a defrosting mode is adopted to defrost the external evaporative condenser 23; as shown in fig. 6, the operating principle of the defrosting mode is:
the compressor 10 outputs a high-temperature and high-pressure refrigerant, the refrigerant passes through the condenser 11, the first coaxial pipe 15 and the second coaxial pipe 16 to reach the second electronic expansion valve 17, the second electronic expansion valve 17 is used for reducing pressure and absorbing heat of the refrigerant, so that the refrigerant with low temperature and low pressure is output to the evaporator 18, the evaporator 18 converts the refrigerant into gasification from liquefaction, the refrigerant stop valve is opened, the thermal expansion valve 21 is closed, the gasified refrigerant is conveyed to the external evaporation condenser 23 through the refrigerant stop valve to defrost the external evaporation condenser 23, the external evaporation condenser 23 converts the refrigerant into liquefaction from gasification and conveys the liquefied refrigerant to the compressor 10 through the first coaxial pipe 15 to circularly flow until the defrosting is completed;
in some embodiments, the thermal management system further comprises a motor kettle 27, the motor kettle 27 is connected with the motor cooling branch, the heat dissipation branch and the passenger cabin heating branch through one-way valves, and the motor kettle 27 is used for adding cooling liquid to each branch of the thermal management system.
Example 2
The present application provides an automobile comprising a thermal management system as described above.
In particular, the thermal management system of the present application may be adapted to any vehicle that is operated by a motor, which is not specifically limited in this application
The foregoing description is only of the preferred embodiments of the present application and is presented as a description of the principles of the technology being utilized. It will be appreciated by persons skilled in the art that the scope of the invention referred to in this application is not limited to the specific combinations of features described above, but it is intended to cover other embodiments in which any combination of features described above or equivalents thereof is possible without departing from the spirit of the invention. Such as the above-described features and technical features having similar functions (but not limited to) disclosed in the present application are replaced with each other.

Claims (10)

1. An automotive thermal management system, comprising: the battery cooling branch circuit, the motor cooling branch circuit and the five-way valve (6) are used for switching the communication states of the battery cooling branch circuit and the motor cooling branch circuit;
the battery cooling branch is used for providing a cooling medium for the battery; the battery cooling branch circuit is provided with a first output end and a first input end which are mutually separated;
the motor cooling branch is used for providing cooling medium for the motor, and is provided with a second output end and a second input end which are mutually separated; a low-temperature radiator (24) is connected in series in the motor cooling branch, the low-temperature radiator (24) is provided with a third input end and a third output end, and the third input end is communicated with the second input end;
the first through branch circuit is provided with a fourth input end and a fourth output end; the fourth output end is communicated with the third output end;
the five-way valve (6) is provided with a first end, a second end, a third end, a fourth end and a fifth end, wherein the first end is connected with the first input end, the second end is connected with the first output end, the third end is connected with the fourth input end, the fourth end is connected with the second input end, and the fifth end is connected with the second output end;
the five-way valve (6) has a first state and a second state; when the battery cooling branch is in a first state, the first end is communicated with the fifth end, the second end is communicated with the third end, the fourth end is cut off, and the battery cooling branch is communicated with the motor cooling branch; when in the second state, the first end is communicated with the second end, the fourth end is communicated with the fifth end, the third end is cut off, and the battery cooling branch is not communicated with the motor cooling branch.
2. The automobile thermal management system according to claim 1, wherein the motor cooling branch comprises a first water pump (1), a charger module (2), a first motor (3), a second water pump (4) and a second motor (5) which are sequentially connected in series, an output end of the second motor (5) is connected with the fifth end, and the low-temperature radiator (24) is arranged between an input end of the first water pump (1) and the fourth end in series.
3. The automotive thermal management system of claim 1, further comprising: the battery cooling branch includes:
-a cooler (9), the cooler (9) having a fifth input, a fifth output, a sixth input, a sixth output; the fifth output end is connected with the second end of the five-way valve (6);
the battery package water-cooling board (7), the input of battery package water-cooling board (7) with the first end of five-way valve (6) is connected, the output of battery package water-cooling board (7) is connected with fourth water pump (8), the output of fourth water pump (8) with fifth input is connected.
4. A thermal management system for an automobile as claimed in claim 3, further comprising: the heat exchange device comprises a battery heat exchange branch and a heat dissipation branch, wherein heat exchange is performed between the battery heat exchange branch and the heat dissipation branch through a condenser (11), and the condenser (11) is provided with a seventh input end, a seventh output end, an eighth input end and an eighth output end;
the battery heat exchange branch circuit includes: -a compressor (10), a first coaxial tube (15), a second coaxial tube (16), a first electronic expansion valve (19) and the cooler (9); the first coaxial pipe (15) is provided with a ninth input end, a ninth output end, a tenth input end and a tenth output end; the second coaxial pipe (16) has an eleventh input, an eleventh output, a twelfth input, a twelfth output; the output end of the compressor (10) is connected with the seventh input end, the seventh output end is connected with the ninth input end, the ninth output end is connected with the eleventh input end, the eleventh output end is connected with the first electronic expansion valve (19), the output end of the first electronic expansion valve (19) is connected with the sixth input end of the cooler (9), the sixth output end of the cooler (9) is connected with the twelfth input end, the twelfth output end is connected with the tenth input end, and the tenth output end is connected with the input end of the compressor (10);
the heat dissipation branch circuit includes: a third water pump (12) and the low-temperature radiator (24); the output end of the third water pump (12) is connected with the eighth input end, the eighth output end is connected with the third input end, and the third output end is connected with the input end of the third water pump (12).
5. The automotive thermal management system of claim 4, further comprising: a first three-way valve (25) is arranged between the heat dissipation branch and the motor cooling branch, and the first three-way valve (25) is used for switching the communication state of the low-temperature radiator (24) and the heat dissipation branch and the motor cooling branch;
the first three-way valve (25) is provided with a sixth end, a seventh end and an eighth end, the sixth end is connected with the third output end of the low-temperature radiator (24), the seventh end is connected with the input end of the first water pump (1), and the eighth end is connected with the input end of the third water pump (12);
the first three-way valve (25) has a third state in which the sixth end is in communication with the seventh end and a fourth state in which the low-temperature radiator (24) is in communication with the motor cooling branch; in a fourth state, the sixth end is in communication with the eighth end, and the low temperature radiator (24) is in communication with the radiating branch.
6. The automotive thermal management system of claim 5, further comprising: the eleventh output end of the second coaxial tube (16) is also connected with a second electronic expansion valve (17), the output end of the second electronic expansion valve (17) is connected with an evaporator (18), the output end of the evaporator (18) is connected with the twelfth input end of the second coaxial tube (16), and the evaporator (18) is used for cooling the passenger cabin;
a first refrigerant stop valve (20) is arranged between the evaporator (18) and the compressor (10), and the first refrigerant stop valve (20) is used for cutting off refrigerant between the evaporator (18) and the compressor (10).
7. The automotive thermal management system of claim 6, further comprising: a passenger cabin heating branch and a passenger cabin heating heat exchange branch;
the passenger compartment heating branch includes:
the input end of the water heating core body (14) is connected with the eighth output end, and the output end of the water heating core body (14) is connected with the input end of the third water pump (12);
the passenger cabin heating heat exchange branch comprises: the external evaporation condenser (23) and the thermal expansion valve (21), the input end of the thermal expansion valve (21) is connected with the output end of the evaporator (18), the output end of the thermal expansion valve (21) is connected with the input end of the external evaporation condenser (23), and the output end of the external evaporation condenser (23) is connected with the tenth input end of the first coaxial tube (15).
8. The automobile thermal management system according to claim 7, wherein a second three-way valve (13) is provided between the heat radiation branch and the passenger compartment heating branch, and the second three-way valve (13) is used for switching the communication state of the heat radiation branch and the passenger compartment heating branch;
the second three-way valve (13) is provided with a ninth end, a tenth end and a tenth end, the ninth end is connected with the eighth output end, the tenth end is connected with the input end of the water heating core body (14), and the tenth end is connected with the third input end;
the second three-way valve (13) is provided with a fifth state and a sixth state, when the second three-way valve is in the fifth state, the ninth end is communicated with the tenth end, and the passenger cabin heating branch is in a working state; when in the sixth state, the ninth end is communicated with the eleventh end, and the heat dissipation branch is in a working state.
9. The automotive thermal management system of claim 7, further comprising: a defrosting branch, the defrosting branch comprising: and a second refrigerant stop valve (22) which is arranged in parallel with the thermal expansion valve (21), wherein when the second refrigerant stop valve (22) is opened, the compressor (10), the water-cooling condenser (11), the evaporator (18), the second refrigerant stop valve (22) and the external evaporation condenser (23) are sequentially connected in series to form the defrosting branch.
10. An automobile comprising the thermal management system of any one of claims 1-9.
CN202310075724.1A 2023-01-18 2023-01-18 Automobile heat management system and automobile Pending CN116160818A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310075724.1A CN116160818A (en) 2023-01-18 2023-01-18 Automobile heat management system and automobile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310075724.1A CN116160818A (en) 2023-01-18 2023-01-18 Automobile heat management system and automobile

Publications (1)

Publication Number Publication Date
CN116160818A true CN116160818A (en) 2023-05-26

Family

ID=86419493

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310075724.1A Pending CN116160818A (en) 2023-01-18 2023-01-18 Automobile heat management system and automobile

Country Status (1)

Country Link
CN (1) CN116160818A (en)

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