CN113561731A - Whole car thermal management system and electric motor car - Google Patents
Whole car thermal management system and electric motor car Download PDFInfo
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- CN113561731A CN113561731A CN202110833469.3A CN202110833469A CN113561731A CN 113561731 A CN113561731 A CN 113561731A CN 202110833469 A CN202110833469 A CN 202110833469A CN 113561731 A CN113561731 A CN 113561731A
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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
- B60H1/00271—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
- B60H1/00321—Heat exchangers for air-conditioning devices
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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
- 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
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Abstract
The invention belongs to the technical field of electric vehicles, and discloses a whole vehicle thermal management system and a vehicle; the whole vehicle thermal management system comprises: the system comprises a refrigerant circulating system, a warm air water circulating system, a battery water circulating system, a motor water circulating system, a first heat exchange element, a second heat exchange element, a third heat exchange element and a four-way valve; the refrigerant circulating system is coupled with the warm air water circulating system through the first heat exchange element; the refrigerant circulating system is coupled with the battery water circulating system through the second heat exchange element; the warm air water circulation system is coupled with the battery water circulation system through the third heat exchange element; and the battery water circulation system is connected with the motor water circulation system through the four-way valve. The whole vehicle heat management system provided by the invention can optimize the heat management structure of the electric vehicle, ensure the cruising ability, optimize the vehicle cooling and heating effects and improve the electric energy utilization rate.
Description
Technical Field
The invention relates to the technical field of electric vehicles, in particular to a whole vehicle thermal management system and an electric vehicle.
Background
The low-temperature endurance mileage of the pure electric vehicle can be reduced by four times or even half compared with that of the pure electric vehicle under the normal temperature condition. The main reason is that, first, the capacity of the battery decays in a low-temperature environment, resulting in a reduction in the total amount of electricity that the battery can eventually discharge; secondly, in order to ensure the thermal comfort of the passenger compartment in a low-temperature environment, the passenger compartment needs to be heated by the output electric quantity of the battery, and the electric quantity consumption is large. Besides, under other temperature conditions, some working conditions can occur to influence the endurance mileage of the pure electric vehicle.
Disclosure of Invention
The invention provides a whole vehicle thermal management system and an electric vehicle, and solves the technical problem that the endurance mileage of the electric vehicle is greatly influenced by temperature in the prior art.
In order to solve the technical problem, the invention provides a complete vehicle thermal management system, which comprises: the system comprises a refrigerant circulating system, a warm air water circulating system, a battery water circulating system, a motor water circulating system, a first heat exchange element, a second heat exchange element, a third heat exchange element and a four-way valve;
the refrigerant circulating system is coupled with the warm air water circulating system through the first heat exchange element;
the refrigerant circulating system is coupled with the battery water circulating system through the second heat exchange element;
the warm air water circulation system is coupled with the battery water circulation system through the third heat exchange element;
and the battery water circulation system is connected with the motor water circulation system through the four-way valve.
Further, the refrigerant cycle system includes: the system comprises a compressor, an outdoor heat exchanger, a gas-liquid separator, a coaxial pipe and an evaporator;
the output end of the compressor is connected with the input end of the flow channel of the outdoor heat exchanger, the output end of the flow channel of the outdoor heat exchanger is connected with the input end of the gas-liquid separator through a third stop valve, and the output end of the gas-liquid separator is connected with the input end of the compressor;
the flow channel output end of the outdoor heat exchanger is connected with the input end of the first flow channel of the coaxial pipe, the output end of the first flow channel of the coaxial pipe is connected with the flow channel input end of the evaporator, the flow channel output end of the evaporator is connected with the input end of the second flow channel of the coaxial pipe, and the output end of the second flow channel of the coaxial pipe is connected with the input end of the gas-liquid separator;
the first flow channel of the first heat exchange element is connected in series between the output end of the compressor and the flow channel input end of the outdoor heat exchanger;
the input end of the first flow channel of the second heat exchange element is connected with the output end of the first flow channel of the coaxial tube, and the output end of the first flow channel of the second heat exchange element is connected with the input end of the second flow channel of the coaxial tube.
Further, a first electronic expansion valve is connected in series between the output end of the first flow channel of the first heat exchange element and the input end of the flow channel of the outdoor heat exchanger, and a first stop valve is connected in parallel at two ends of the first electronic expansion valve;
the output end of the first flow passage of the first heat exchange element is connected with the input end of the first flow passage of the coaxial pipe through a second stop valve;
a second electronic expansion valve is arranged at the input end of the flow passage of the evaporator;
and a third electronic expansion valve is arranged at the input end of the flow channel of the second heat exchange element.
Further, the outdoor heat sink is provided with a heat radiation fan.
Further, a blower is disposed on one side of the evaporator.
Further, the warm air water circulation system includes: the hot air water pump, the water heater, the first three-way water valve and the hot air core body;
the output of warm braw water pump with the input of first heat transfer component's second runner links to each other, the output of first heat transfer component's second runner with water heater's input links to each other, water heater's output with the runner input of warm braw core links to each other, the runner output of warm braw core with the first port of first tee bend water valve links to each other, the second port of first tee bend water valve with warm braw water pump's input links to each other, the third port of first tee bend water valve passes through third heat transfer component's first runner with warm braw water pump's input links to each other.
Further, the warm air core body is arranged on the air outlet side of the air blower.
Further, the battery water circulation system includes: the battery water pump, the battery pack cooling element and the second three-way water valve;
the output end of the battery water pump is connected with the flow channel input end of the battery pack cooling element, the flow channel output end of the battery pack cooling element is connected with the input end of a second flow channel of the third heat exchange element, the output end of the second flow channel of the third heat exchange element is connected with the fourth port of the four-way valve through the second flow channel of the second heat exchange element, the third port of the four-way valve is connected with the first port of the second three-way water valve, the second port of the second three-way water valve is connected with the input end of the second flow channel of the third heat exchange element, and the third port of the second three-way water valve is connected with the input end of the battery water pump.
Further, the motor water circulation system includes: the motor water pump, the motor cooling element, the third three-way water valve and the low-temperature radiator;
the output end of the motor water pump is connected with the first port of the third three-way water valve through the flow channel of the motor cooling element, the second port of the third three-way water valve is connected with the flow channel input end of the low-temperature radiator, and the flow channel output end of the low-temperature radiator is connected with the input end of the motor water pump;
and a third port of the third three-way valve is connected with a first port of the four-way valve, and a second port of the four-way valve is connected with the input end of the motor water pump.
An electric vehicle comprising: the finished automobile thermal management system.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
the whole car thermal management system and the electric motor car that provide in the embodiment of this application, through establishing refrigerant circulation system, warm braw water circulating system, battery water circulating system, motor water circulating system and through first heat transfer element coupling refrigerant circulation system with warm braw water circulating system, through the coupling of second heat transfer element refrigerant circulation system with battery water circulating system, through the coupling of third heat transfer element warm braw water circulating system with battery water circulating system connects through the cross valve battery water circulating system with motor water circulating system realizes the heat transfer between each circulation system to when realizing passenger cabin refrigeration, passenger cabin heating, passenger cabin dehumidification, battery cooling, battery heating, hybrid refrigeration, hybrid heating, motor cooling, outdoor heat exchanger defrosting etc. function mode, can also realize the combination of above-mentioned function mode simultaneously, therefore, the comfortable and practical effect is met, the efficient application of heat under the low-temperature working condition can be met, and the influence of low temperature on the endurance mileage is reduced; thereby achieving the effect of optimizing the efficient utilization of the electric energy of the electric vehicle.
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 description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are 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 creative efforts.
Fig. 1 is a schematic structural diagram of a thermal management system of a complete vehicle according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that all the directional indications in the embodiments of the present application are only used to explain the relative position relationship, the motion situation, and the like between the components in a certain posture, and if the certain posture is changed, the directional indication is changed accordingly.
The following disclosure provides many different embodiments, or examples, for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
The application is described below with reference to specific embodiments in conjunction with the following drawings.
The embodiment of the application provides a whole vehicle heat management system and an electric vehicle, and solves the technical problem that the endurance mileage of the electric vehicle is greatly influenced by temperature in the prior art.
In order to better understand the technical solutions, the technical solutions will be described in detail below with reference to the drawings and the specific embodiments of the specification, and it should be understood that the embodiments and specific features of the embodiments of the present invention are detailed descriptions of the technical solutions of the present application, and are not limitations of the technical solutions of the present application, and the technical features of the embodiments and examples of the present application may be combined with each other without conflict.
Referring to fig. 1, a vehicle thermal management system includes: a refrigerant circulating system 100, a warm air water circulating system 200, a battery water circulating system 300, a motor water circulating system 400, and a first heat exchanging element 32, a second heat exchanging element 15, a third heat exchanging element 21, and a four-way valve 28 for coupling heat transfer between the circulating systems.
Specifically, the refrigerant cycle system 100 is coupled with the warm wind water cycle system 200 through the first heat exchange element 32; so that heat can be transferred therebetween through the first heat exchange member 32. In this embodiment, the first heat exchange element 32 is a water-cooled condenser.
The refrigerant cycle system 100 is coupled with the battery water cycle system 300 through the second heat exchange element 15; so that heat can be transferred therebetween through the second heat exchange member 15. In this embodiment, the second heat exchange element 15 is a first plate heat exchanger.
The warm air water circulation system 200 is coupled with the battery water circulation system 300 through the third heat exchange element 21; so that heat can be transferred therebetween through the third heat exchange member 21. In this embodiment, the third heat exchange element 21 is a second plate heat exchanger.
The battery water circulation system 300 is connected to the motor water circulation system 400 through the four-way valve 28, thereby gating the battery water circulation system 300 and the motor water circulation system 400 according to a heat control mode.
Specifically, the main functional components of the refrigerant cycle system 100 include: a compressor 1, an outdoor heat exchanger 5, a gas-liquid separator 9, a coaxial pipe 10, and an evaporator 12.
The output end of the compressor 1 is connected with the flow channel input end of the outdoor heat exchanger 5, the flow channel output end of the outdoor heat exchanger 5 is connected with the input end of the gas-liquid separator 9 through a third stop valve 8, and the output end of the gas-liquid separator 9 is connected with the input end of the compressor 1; the flow channel output end of the outdoor heat exchanger 5 is connected with the input end of the first flow channel of the coaxial pipe 10, the output end of the first flow channel of the coaxial pipe 10 is connected with the flow channel input end of the evaporator 12, the flow channel output end of the evaporator 12 is connected with the input end of the second flow channel of the coaxial pipe 10, and the output end of the second flow channel of the coaxial pipe 12 is connected with the input end of the gas-liquid separator 9; the first flow channel of the first heat exchange element 32 is connected in series between the output end of the compressor 1 and the flow channel input end of the outdoor heat exchanger 5; the input end of the first flow channel of the second heat exchange element 15 is connected with the output end of the first flow channel of the coaxial tube 10, and the output end of the first flow channel of the second heat exchange element 15 is connected with the input end of the second flow channel of the coaxial tube 10.
Similarly, a first electronic expansion valve 3 is connected in series between the output end of the first flow channel of the first heat exchange element 32 and the flow channel input end of the outdoor heat exchanger 5, and a first stop valve 2 is connected in parallel at two ends of the first electronic expansion valve 3; the output end of the first flow passage of the first heat exchange element 32 is connected with the input end of the first flow passage of the coaxial pipe 10 through a second stop valve 7; a second electronic expansion valve 11 is arranged at the input end of the flow passage of the evaporator 12; a third electronic expansion valve 14 is arranged at the input end of the flow channel of the second heat exchange element 15.
In order to facilitate heat dissipation and cooling, heat flows, and the outdoor heat sink 5 is provided with a heat dissipation fan 4. A blower 13 is disposed on the evaporator 12 side.
Further, the warm air water circulation system 200 includes: a warm air pump 19, a water heater 16, a first three-way water valve 18 and a warm air core body 17.
The output end of the warm air water pump 19 is connected with the input end of the second flow channel of the first heat exchange element 32, the output end of the second flow channel of the first heat exchange element 32 is connected with the input end of the water heater 16, the output end of the water heater 16 is connected with the flow channel input end of the warm air core body 17, the flow channel output end of the warm air core body 17 is connected with the first port of the first three-way water valve 18, the second port of the first three-way water valve 18 is connected with the input end of the warm air water pump 19, and the third port of the first three-way water valve 18 is connected with the input end of the warm air water pump 19 through the first flow channel of the third heat exchange element 21.
In order to blow out hot air, the warm air core 17 is arranged on the air outlet side of the blower 13.
Further, the battery water circulation system 300 includes: a battery water pump 30, a battery pack cooling element 31 and a second three-way water valve 29.
The output end of the battery water pump 30 is connected with the flow channel input end of the battery pack cooling element 31, the flow channel output end of the battery pack cooling element 31 is connected with the input end of the second flow channel of the third heat exchange element 21, the output end of the second flow channel of the third heat exchange element 21 is connected with the fourth port of the four-way valve 28 through the second flow channel of the second heat exchange element 15, the third port of the four-way valve 28 is connected with the first port of the second three-way water valve 29, the second port of the second three-way water valve 29 is connected with the input end of the second flow channel of the third heat exchange element 21, and the third port of the second three-way water valve 29 is connected with the input end of the battery water pump 30.
Similarly, the motor water circulation system 400 includes: a motor water pump 22, a motor cooling element, a third three-way water valve 26 and a low-temperature radiator 6. Wherein the motor cooling element mainly comprises: a heat exchange element 23 of the DCDC, a heat exchange element 24 of the MCU and a heat exchange element 25 of the driving motor.
The output end of the motor water pump 22 is connected with the first port of the third three-way water valve 26 through the flow channel of the motor cooling element, the second port of the third three-way water valve 26 is connected with the flow channel input end of the low-temperature radiator 6, and the flow channel output end of the low-temperature radiator 6 is connected with the input end of the motor water pump 22; a third port of the third three-way valve 26 is connected to a first port of the four-way valve 28, and a second port of the four-way valve 28 is connected to an input of the electric motor-pump 22.
The entire vehicle thermal management system provided by the embodiment further comprises: air-conditioning box and front end module electronic fan. The evaporator 12 and the warm air core 17 are arranged in an air conditioning box.
It should be noted that, in order to supplement the circulating refrigerant, the motor water circulation system 400 and the warm air water circulation system 200 are respectively connected to the first water supplement kettle 27 and the second water supplement kettle 20.
The embodiment also provides an electric vehicle based on the whole vehicle thermal management system.
The operation thereof will be described in detail below.
In the refrigerant cycle system 100, the compressor 1 may compress a low-temperature low-pressure gas refrigerant into a high-temperature high-pressure gas refrigerant when heating. The first flow channel and the second flow channel of the water-cooled condenser 32 respectively circulate refrigerant and antifreeze, and heat exchange is performed between the refrigerant and the antifreeze in the warm air water system loop, so that the high-temperature and high-pressure gaseous refrigerant is liquefied and condensed into high-temperature and high-pressure liquid refrigerant, and meanwhile, the antifreeze in the warm air water loop system is heated; and then the first stop valve 2 is closed, so that the refrigerant can only be throttled and expanded through the first electronic expansion valve 3, evaporation and heat absorption are carried out at the outdoor heat exchanger 5, and at the moment, the heat radiation fan 4 drives air to flow, so that the heat exchange effect is improved. The refrigerant then returns to the compressor 1 through the third stop valve 8 and the gas-liquid separator 9, completing the cycle.
When the refrigerant cycle system 100 performs refrigeration, the compressor 1 may compress a low-temperature low-pressure gaseous refrigerant into a high-temperature high-pressure gaseous refrigerant; the refrigerant passes through the water-cooled condenser 32, at this time, the cooling liquid in the warm air water circulation system 200 does not flow, almost no heat exchange occurs, and the refrigerant is still in a gaseous state; then the first stop valve 2 is opened, the refrigerant flows to the outdoor heat exchanger 5 through the first stop valve 2, exchanges heat with air at the outdoor heat exchanger 5 and condenses into liquid, and the cooling fan 4 drives the air to flow at the moment, so that the heat exchange effect is improved. Then the refrigerant flows to a second electronic expansion valve 11 through a coaxial pipe 10 for throttling, is evaporated at an evaporator 12, absorbs heat in the air to generate low-temperature air, and blows cold air to a passenger compartment through a blower 13 to generate a refrigeration effect. The refrigerant passes through the evaporator 12 and then passes through the coaxial pipe 10 again, at the moment, the liquid refrigerant and the gaseous refrigerant are respectively arranged in the coaxial pipe 10, wherein the liquid refrigerant has higher temperature, the gaseous refrigerant is increased in temperature through heat exchange, the liquid temperature is reduced, and the refrigeration performance of the whole vehicle is facilitated. Finally the refrigerant is returned to the compressor 1 via a gas-liquid separator 9.
In the actual vehicle using process, the whole vehicle using working condition is more complex, and the heat pump type whole vehicle heat management system needs to be matched with a control strategy to realize a heat management function. Some of the overall vehicle thermal management system functions in a common environment are listed below.
Under the working condition of high-temperature driving, generally above 30 ℃, the air conditioner of the passenger compartment is started, and at the moment, the refrigerant circulating system 100 works.
The compressor 1 pumps out the refrigerant, and the refrigerant flows through the first heat exchange element 32, the first stop valve 2, the outdoor heat exchanger 5, the coaxial pipe 10, the second electronic expansion valve 11, the evaporator 12, the coaxial pipe 10, the gas-liquid separator 9 in sequence, and then returns to the compressor 1. The first heat exchange element 32 does not exchange heat, the first electronic expansion valve 3 is closed, the outdoor heat exchanger 5 condenses and radiates heat, the outdoor heat exchanger 4 is opened, the third stop valve 8 is closed, and the third motor expansion valve 14 is closed.
If during driving it is detected that the battery temperature is too high, while the refrigerant is passing through the component outdoor heat exchanger 5, the second electronic expansion valve 11 and the component third electronic expansion valve 14 are simultaneously opened, and the refrigerant flows through the evaporator 12 and the first heat exchange element 15 simultaneously and then together through the coaxial pipe 10. At the same time, the battery water circulation circuit 300 is also operated synchronously, and the antifreeze flows out from the battery water pump 30, the battery pack cooling element 31, the third heat exchange element 21, the first heat exchange element 15, the four-way valve 28, and the second three-way valve 29. Wherein the third heat exchange element 21 does not exchange heat, the first port and the second port of the four-way valve 28 are communicated, the third port and the fourth port of the four-way valve 28 are communicated, and the first port and the second port of the second three-way valve 29 are communicated.
Under the driving condition, the motor also needs to dissipate heat at the moment, and the cooling liquid of the motor water circulation system 400 flows in a circulating manner. The motor water pump 22 pumps the cooling liquid, and the cooling liquid flows through the DCDC heat exchange element 23, the MCU heat exchange element 24, the driving motor heat exchange element 25, the third three-way valve 26, the low-temperature radiator 6 and the motor water pump 22. Wherein the first port and the second port of the third three-way valve 26 communicate.
Under the working condition of normal-temperature driving, specifically 15-30 ℃, the passenger cabin and the battery pack do not need to be heated, and only electric drive is used for heat dissipation through the low-temperature radiator 6. The motor water pump 22 pumps the cooling liquid, the cooling liquid flows through the DCDC heat exchange element 23, the MCU heat exchange element 24, the driving motor heat exchange element 25, the third three-way valve 26 and the low-temperature radiator 6, and then the cooling liquid flows back to the motor water pump 2. Wherein the first port and the second port of the third three-way valve 26 communicate.
Under the working condition of low-temperature driving, specifically-10-15 ℃, the heating of the air conditioner of the passenger compartment is started, and the flow direction of a refrigerant system is as follows:
the system comprises a compressor 1, a first heat exchange element 32, a first electronic expansion valve 3, an outdoor heat exchanger 5, a third stop valve 8, a gas-liquid separator 9 and the compressor 1. At the same time, warm air water circulation loop 200 is turned on to heat the passenger compartment, and the system flows down as follows: a warm air water pump 19, a first heat exchange element 32, a water heater 16, a first three-way valve 18 and a warm air water pump 19. The high-temperature refrigerant at the first heat exchange element 32 is liquefied to release heat, the first stop valve 2 is closed, the outdoor heat exchanger 5 evaporates to absorb heat, the radiator fan 4 is opened, and the first port and the second port of the first three-way valve 18 are communicated.
The motor circuit may have a plurality of modes, and when the temperatures of the battery and the motor water are low, the refrigerant flow of the motor water circulation system 400 is as follows: a motor water pump 22, a heat exchange element 23 of the DCDC, an MCU heat exchange element 24, a driving motor heat exchange element 25, a third three-way valve 26, a four-way valve 28 (at the moment, 12 and 34 are respectively communicated), and the motor water pump 22. A first port and a third port of the third three-way valve 26 are communicated, a first port and a second port of the four-way valve 28 are communicated, and a third port and a fourth port of the four-way valve 28 are communicated.
When the water temperature of the motor is high and the temperature of the battery is low, the refrigerant of the motor water circulation system 400 flows as follows, namely, a motor water pump 22, a heat exchange element 23 of the DCDC, an MCU heat exchange element 24, a driving motor heat exchange element 25, a third three-way valve 26, a four-way valve 28, a second three-way valve 29, a battery water pump 30, a battery pack cooling element 31, the motor water pump 22, a third heat exchange element 21, a second heat exchange element 15, a four-way valve 28 and the motor water pump 22. The first port and the third port of the third three-way valve 26 are communicated, the first port and the third port of the four-way valve 28 are communicated, the second port and the fourth port of the four-way valve 28 are communicated, the first port and the second port of the second three-way valve 29 are communicated, the battery water pump 30 and the battery pack cooling element 31 utilize the waste heat of the motor to heat the battery pack.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
the whole car thermal management system and the electric motor car that provide in the embodiment of this application, through establishing refrigerant circulation system, warm braw water circulating system, battery water circulating system, motor water circulating system and through first heat transfer element coupling refrigerant circulation system with warm braw water circulating system, through the coupling of second heat transfer element refrigerant circulation system with battery water circulating system, through the coupling of third heat transfer element warm braw water circulating system with battery water circulating system connects through the cross valve battery water circulating system with motor water circulating system realizes the heat transfer between each circulation system to when realizing passenger cabin refrigeration, passenger cabin heating, passenger cabin dehumidification, battery cooling, battery heating, hybrid refrigeration, hybrid heating, motor cooling, outdoor heat exchanger defrosting etc. function mode, can also realize the combination of above-mentioned function mode simultaneously, therefore, the comfortable and practical effect is met, the efficient application of heat under the low-temperature working condition can be met, and the influence of low temperature on the endurance mileage is reduced; thereby achieving the effect of optimizing the efficient utilization of the electric energy of the electric vehicle.
In this application, unless expressly stated or limited otherwise, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application.
In addition, descriptions in this application as to "first", "second", etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present application.
In the description of the present invention, unless otherwise expressly specified or limited, the first feature "on" or "under" the second feature may comprise the first and second features being in direct contact, or may comprise the first and second features being in contact, not directly, but via another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (10)
1. A vehicle thermal management system, comprising: the system comprises a refrigerant circulating system, a warm air water circulating system, a battery water circulating system, a motor water circulating system, a first heat exchange element, a second heat exchange element, a third heat exchange element and a four-way valve;
the refrigerant circulating system is coupled with the warm air water circulating system through the first heat exchange element;
the refrigerant circulating system is coupled with the battery water circulating system through the second heat exchange element;
the warm air water circulation system is coupled with the battery water circulation system through the third heat exchange element;
and the battery water circulation system is connected with the motor water circulation system through the four-way valve.
2. The vehicle thermal management system of claim 1, wherein the refrigerant cycle system comprises: the system comprises a compressor, an outdoor heat exchanger, a gas-liquid separator, a coaxial pipe and an evaporator;
the output end of the compressor is connected with the input end of the flow channel of the outdoor heat exchanger, the output end of the flow channel of the outdoor heat exchanger is connected with the input end of the gas-liquid separator through a third stop valve, and the output end of the gas-liquid separator is connected with the input end of the compressor;
the flow channel output end of the outdoor heat exchanger is connected with the input end of the first flow channel of the coaxial pipe, the output end of the first flow channel of the coaxial pipe is connected with the flow channel input end of the evaporator, the flow channel output end of the evaporator is connected with the input end of the second flow channel of the coaxial pipe, and the output end of the second flow channel of the coaxial pipe is connected with the input end of the gas-liquid separator;
the first flow channel of the first heat exchange element is connected in series between the output end of the compressor and the flow channel input end of the outdoor heat exchanger;
the input end of the first flow channel of the second heat exchange element is connected with the output end of the first flow channel of the coaxial tube, and the output end of the first flow channel of the second heat exchange element is connected with the input end of the second flow channel of the coaxial tube.
3. The vehicle thermal management system according to claim 2, wherein a first electronic expansion valve is connected in series between an output end of the first flow channel of the first heat exchange element and an input end of the flow channel of the outdoor heat exchanger, and a first stop valve is connected in parallel at two ends of the first electronic expansion valve;
the output end of the first flow passage of the first heat exchange element is connected with the input end of the first flow passage of the coaxial pipe through a second stop valve;
a second electronic expansion valve is arranged at the input end of the flow passage of the evaporator;
and a third electronic expansion valve is arranged at the input end of the flow channel of the second heat exchange element.
4. The finished vehicle thermal management system of claim 2, wherein said outdoor heat sink is configured with a heat sink fan.
5. The vehicle thermal management system of claim 3, wherein a blower is provided on one side of the evaporator.
6. The vehicle thermal management system of claim 5, wherein the warm air water circulation system comprises: the hot air water pump, the water heater, the first three-way water valve and the hot air core body;
the output of warm braw water pump with the input of first heat transfer component's second runner links to each other, the output of first heat transfer component's second runner with water heater's input links to each other, water heater's output with the runner input of warm braw core links to each other, the runner output of warm braw core with the first port of first tee bend water valve links to each other, the second port of first tee bend water valve with warm braw water pump's input links to each other, the third port of first tee bend water valve passes through third heat transfer component's first runner with warm braw water pump's input links to each other.
7. The vehicle thermal management system of claim 6, wherein the warm air core is disposed on an air outlet trajectory of the blower.
8. The vehicle thermal management system of claim 7, wherein the battery water circulation system comprises: the battery water pump, the battery pack cooling element and the second three-way water valve;
the output end of the battery water pump is connected with the flow channel input end of the battery pack cooling element, the flow channel output end of the battery pack cooling element is connected with the input end of a second flow channel of the third heat exchange element, the output end of the second flow channel of the third heat exchange element is connected with the fourth port of the four-way valve through the second flow channel of the second heat exchange element, the third port of the four-way valve is connected with the first port of the second three-way water valve, the second port of the second three-way water valve is connected with the input end of the second flow channel of the third heat exchange element, and the third port of the second three-way water valve is connected with the input end of the battery water pump.
9. The vehicle thermal management system of claim 8, wherein the electric machine water circulation system comprises: the motor water pump, the motor cooling element, the third three-way water valve and the low-temperature radiator;
the output end of the motor water pump is connected with the first port of the third three-way water valve through the flow channel of the motor cooling element, the second port of the third three-way water valve is connected with the flow channel input end of the low-temperature radiator, and the flow channel output end of the low-temperature radiator is connected with the input end of the motor water pump;
and a third port of the third three-way valve is connected with a first port of the four-way valve, and a second port of the four-way valve is connected with the input end of the motor water pump.
10. An electric vehicle, comprising: the finished vehicle thermal management system of any of claims 1-9.
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| CN202110833469.3A CN113561731B (en) | 2021-07-23 | 2021-07-23 | Whole car thermal management system and electric motor car |
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| CN202110833469.3A CN113561731B (en) | 2021-07-23 | 2021-07-23 | Whole car thermal management system and electric motor car |
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