CN112498048A - Whole car thermal management system and electric motor car of electric motor car - Google Patents
Whole car thermal management system and electric motor car of electric motor car Download PDFInfo
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- CN112498048A CN112498048A CN202011132951.6A CN202011132951A CN112498048A CN 112498048 A CN112498048 A CN 112498048A CN 202011132951 A CN202011132951 A CN 202011132951A CN 112498048 A CN112498048 A CN 112498048A
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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
- B60H1/00321—Heat exchangers for air-conditioning devices
- B60H1/00342—Heat exchangers for air-conditioning devices of the liquid-liquid type
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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
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
- B60H1/3223—Cooling devices using compression characterised by the arrangement or type of the compressor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
- B60H1/3227—Cooling devices using compression characterised by the arrangement or the type of heat exchanger, e.g. condenser, evaporator
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
- B60H1/3228—Cooling devices using compression characterised by refrigerant circuit configurations
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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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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The embodiment of the specification discloses a whole vehicle heat management system of an electric vehicle, which comprises a refrigerant system loop, a battery water system loop, a motor water system loop, a first plate heat exchanger and a second plate heat exchanger, wherein the refrigerant system loop, the battery water system loop, the motor water system loop, the first plate heat exchanger and the second plate heat exchanger are arranged in the electric vehicle; wherein the first plate heat exchanger is configured to couple the refrigerant system loop and the battery water system loop, and the second plate heat exchanger is configured to couple the refrigerant system loop and the electric machine water system loop. The whole vehicle heat management system of the electric vehicle and the electric vehicle can ensure the arrangement space of the front end of the electric vehicle and can reduce the probability of frosting caused by the arrangement of the heat exchanger at the front end of the electric vehicle.
Description
Technical Field
The embodiment of the specification relates to the technical field of electric vehicles, in particular to a whole vehicle thermal management system of an electric vehicle and the electric vehicle.
Background
Along with the rapid development of electric motor car technique, the security performance and the comfort level of electric motor car are more and more important, and whole car thermal management system of electric motor car all has very important influence to the security performance and the comfort level of electric motor car, and whole car thermal management system of current electric motor car adopts heat pump type air conditioning system and/or electrical heating heat supply usually, and the heat exchanger sets up the front end at the electric motor car usually, and the part that the heat exchanger links to each other is more, and the limited heat exchanger of this moment of the front end arrangement space of electric motor car and continuous parts can occupy great space, make the front end of electric motor car arrange the space and reduce, and, because the heat exchanger sets up the problem that can lead to appearing frosting at the electric motor car.
Disclosure of Invention
The embodiment of the specification provides a whole car thermal management system and electric motor car of electric motor car, can ensure that the front end of electric motor car arranges the space, can also reduce the heat exchanger and set up at the electric motor car front end and lead to the probability of the problem of frosting appearing.
The first aspect of the embodiments of the present specification provides a whole vehicle thermal management system for an electric vehicle, which includes a refrigerant system loop, a battery water system loop, a motor water system loop, a first plate heat exchanger and a second plate heat exchanger, which are arranged in the electric vehicle; wherein the first plate heat exchanger is configured to couple the refrigerant system loop and the battery water system loop, and the second plate heat exchanger is configured to couple the refrigerant system loop and the electric machine water system loop.
Optionally, the refrigerant system loop comprises a compressor, an indoor condenser, an indoor evaporator and a liquid-gas separation tank connected by refrigerant lines.
Optionally, the refrigerant system loop further includes a stop valve, a battery expansion valve, and a check valve disposed on the refrigerant line.
Optionally, the battery water system loop comprises a battery water pump and a battery pack which are connected through a first water pipeline.
Optionally, the motor water system loop comprises a motor water pump, a motor, an electric control system, a low-temperature radiator and a switch three-way water valve, wherein the motor water pump, the motor, the electric control system and the low-temperature radiator are connected through a second water pipeline, and the switch three-way water valve is arranged on the second water pipeline.
Optionally, the first plate heat exchanger includes a first flow passage and a second flow passage, the first flow passage is communicated with the refrigerant pipeline, and the second flow passage is communicated with the first water pipeline.
Optionally, the second plate heat exchanger includes a third flow passage and a fourth flow passage, the third flow passage is communicated with the refrigerant pipeline, and the fourth flow passage is communicated with the second water pipeline.
Optionally, the electric vehicle further comprises an electronic fan arranged at the front end of the electric vehicle, and the electronic fan is arranged between the low-temperature radiator and a passenger compartment of the electric vehicle.
Optionally, the air conditioner further comprises an air conditioner box, wherein an air blower, the indoor evaporator, an air door mechanism, the indoor condenser and an air heater are arranged in the air conditioner box.
The second aspect of the embodiments of the present specification provides an electric vehicle, which includes a vehicle body of the electric vehicle and the entire vehicle thermal management system provided in the vehicle body as in the first aspect. The beneficial effects of the embodiment of the specification are as follows:
based on the technical scheme, the first plate heat exchanger is used for coupling the refrigerant system loop with the battery water system loop, and the second plate heat exchanger is used for coupling the refrigerant system loop with the motor water system loop, so that the refrigerant in the refrigerant system loop and the antifreeze in the battery water system loop can exchange heat through the first plate heat exchanger, and the refrigerant in the refrigerant system loop and the antifreeze in the motor water system loop can exchange heat through the second plate heat exchanger 11, so that heat exchange can be carried out between the three systems through the two plate heat exchangers, and heat exchange can be realized under the low-temperature condition; compared with the prior art, the whole vehicle heat management system has the advantages of fewer types and total number of parts, high universality of the parts and capability of reducing cost.
Drawings
Fig. 1 is a schematic overall structural diagram of a whole vehicle thermal management system of an electric vehicle in an embodiment of the present specification;
FIG. 2 is a schematic structural diagram of heat exchange of a finished automobile thermal management system under a high-temperature running condition in the embodiment of the specification;
FIG. 3 is a first structural diagram of a heat exchange of a vehicle thermal management system under a low-temperature driving condition according to an embodiment of the present disclosure;
FIG. 4 is a second structural diagram illustrating heat exchange of the vehicle thermal management system under a low-temperature driving condition according to the embodiment of the present disclosure;
fig. 5 is a third structural diagram of the heat exchange of the entire vehicle thermal management system under the low-temperature driving condition in the embodiment of the present disclosure.
Detailed Description
In order to better understand the technical solutions, the technical solutions of the embodiments of the present specification are described in detail below with reference to the drawings and specific embodiments, and it should be understood that the specific features of the embodiments and embodiments of the present specification are detailed descriptions of the technical solutions of the embodiments of the present specification, and are not limitations of the technical solutions of the present specification, and the technical features of the embodiments and embodiments of the present specification may be combined with each other without conflict.
As shown in fig. 1, an embodiment of the present specification provides a vehicle thermal management system of an electric vehicle, including a refrigerant system circuit, a battery water system circuit, a motor water system circuit, a first plate heat exchanger 10 and a second plate heat exchanger 11 disposed in the electric vehicle; wherein a first plate heat exchanger 10 is used for coupling the refrigerant system circuit and the battery water system circuit and a second plate heat exchanger 11 is used for coupling the refrigerant system circuit and the electric motor water system circuit.
Specifically, the refrigerant system circuit includes a compressor 21, an indoor condenser 22, an indoor evaporator 23, and a liquid-gas separation tank 24 connected by a refrigerant line 20.
Specifically, the refrigerant system circuit also includes a shutoff valve 25, a battery expansion valve 26, and a check valve 27 disposed on the refrigerant line 20. Here, the stop valve 25 is provided between the compressor 21 and the indoor condenser 22, the stop valve 251 is also provided between the compressor 21 and the second plate heat exchanger 11, the stop valve 252 may be provided between the liquid-gas separation tank 24 and the second plate heat exchanger 11, the stop valve 253 is provided between the liquid-gas separation tank 24 and the first plate heat exchanger 10, and the stop valve 254 is provided between the compressor 21 and the first plate heat exchanger 10, which is not limited in this specification.
Specifically, a check valve 27 and a battery expansion valve 26 are sequentially provided on the refrigerant line 20 between the second plate heat exchanger 11 and the indoor evaporator 23; a one-way valve 271 and a battery expansion valve 26 are sequentially arranged on a refrigerant pipeline 20 between the first plate heat exchanger 10 and the indoor evaporator 23; and a battery expansion valve 261 and a battery expansion valve 262 are provided between the second plate heat exchanger 11 and the first plate heat exchanger 10.
In the embodiment of the present specification, the battery water system loop includes a battery water pump 31 and a battery pack 32 connected by a first water pipe 30. The liquid in the first water line 30 is usually an antifreeze solution, distilled water, or the like, and the following concrete examples are antifreeze solutions.
In the embodiment of the present disclosure, the electric motor water system loop includes an electric motor water pump 41, an electric motor and control system 42, and a low temperature radiator 43 connected by a second water pipe 40, and a three-way water valve 44 disposed on the second water pipe 40. The liquid in the second water line 40 is usually an antifreeze solution, distilled water, or the like, and the following concrete examples are antifreeze solutions. And, the electronic fan 511 is arranged above the low-temperature radiator 43, so that the low-temperature radiator 43 can be rapidly contacted with the outside air through the electronic fan 511, and the heat exchange efficiency is accelerated.
In the embodiment, the first plate heat exchanger 10 includes a first flow passage and a second flow passage, the first flow passage is communicated with the refrigerant pipeline 20 and is used for enabling the coolant in the refrigerant pipeline 20 to enter the first flow passage; the second flow passage is communicated with the first water line 30 for allowing the antifreeze in the first water line 30 to enter the second flow passage; in this way, the coolant in the first flow passage and the antifreeze in the second flow passage can exchange heat. And a check valve 253 is arranged on a refrigerant pipeline between the first plate heat exchanger 10 and the liquid-gas separation tank 24, and the backflow of the refrigerant in the first plate heat exchanger 10 transmitted to the liquid-gas separation tank 24 is avoided through the check valve 253.
In the embodiment of the present specification, the second plate heat exchanger 11 includes a third flow channel and a fourth flow channel, and the third flow channel 11 is communicated with the refrigerant pipeline 20, so that the coolant in the refrigerant pipeline 20 enters the third flow channel; the fourth flow passage is communicated with the second water pipeline 40 and is used for leading the antifreeze in the second water pipeline 40 to enter the fourth flow passage; in this way, the coolant in the third flow passage and the antifreeze in the fourth flow passage can exchange heat.
In the embodiment of the present specification, the vehicle thermal management system further includes an electronic fan 511 disposed at the front end of the electric vehicle, and the electronic fan 511 is disposed between the low-temperature radiator 43 and the passenger compartment of the electric vehicle.
Specifically, the whole vehicle thermal management system further comprises an air conditioning box 50, and the air conditioning box 50 is provided with a blower 51, an indoor evaporator 23, a damper mechanism 52, an indoor condenser 22 and an air heater 53.
In the embodiment of the present disclosure, as shown in fig. 2, the temperature of the electric vehicle in the high-temperature driving condition is higher than a first set temperature, where the first set temperature may be, for example, a temperature not less than 23 ℃, such as 24 ℃, 25 ℃, 30 ℃ and 32 ℃.
Specifically, under the working condition of high-temperature running of the electric vehicle, both the passenger compartment and the battery have refrigeration requests, at this time, the compressor 24 is controlled to be started, so that the refrigerant heated in the refrigerant pipeline 20 reaches the third flow channel in the second plate heat exchanger 11 through the stop valve 251, and the antifreeze solution in the second water pipeline 40 enters the fourth flow channel due to the fact that the fourth flow channel of the second plate heat exchanger 11 is communicated with the second water pipeline 40; so that the refrigerant in the third flow channel 11 exchanges heat with the antifreeze in the fourth flow channel, and the refrigerant is promoted to be cooled and the antifreeze is heated; the heated antifreeze flows through the low-temperature radiator 43 to exchange heat with the outside air to reduce the temperature, at the moment, the electronic fan 511 can be started to accelerate the heat exchange efficiency between the low-temperature radiator 43 and the outside air, then flows through the switch three-way water valve 44 to reach the inlet of the motor water pump 41, flows through the motor and the electric control system 42 after being pressurized, and then reaches the second plate heat exchanger 11 to form a first antifreeze circulation; the cooled refrigerant passes through the check valve 27 and then is shunted to the electromagnetic expansion valve 26 and the battery expansion valve 261, is evaporated and absorbs heat in the indoor evaporator 24 and the first plate heat exchanger 10 respectively after throttling, finally converges to reach the liquid-gas separation tank 24 and then enters the compressor 21 to form a refrigerant cycle, and at the moment, the backflow of the refrigerant transmitted to the liquid-gas separation tank 24 by the first plate heat exchanger 10 and the indoor evaporator 24 is avoided through the return valve 253; and the cooled refrigerant enters the first flow channel of the first plate heat exchanger 10, and the second flow channel of the first plate heat exchanger 10 is communicated with the first water pipeline 30, so that the antifreeze in the first water pipeline 40 enters the second flow channel, the refrigerant in the first flow channel exchanges heat with the antifreeze in the second flow channel, the refrigerant is heated, and the antifreeze is cooled, so that the antifreeze cooled by the first plate heat exchanger 10 flows to the battery pack 32 under the action of the battery water pump 21, is cooled and returns to the battery water pump 21, and a second antifreeze circulation is formed. So for the electric motor car is under the operating mode that goes of high temperature, can realize simultaneously carrying out refrigerated effect to passenger cabin and to the battery through first plate heat exchanger 10 and second plate heat exchanger 11.
In the embodiment of the present disclosure, as shown in fig. 3, under a low-temperature driving condition, the temperature of the electric vehicle under the low-temperature driving condition is within a first set temperature range, where the first set temperature range may be greater than the second set temperature and lower than a third set temperature, for example, the second set temperature may be a value from 2 ℃ to 8 ℃, the third set temperature is a value from 10 ℃ to 20 ℃, and in this case, the first set temperature range may be, for example, from 5 ℃ to 15 ℃, from 2 ℃ to 18 ℃, and from 6 ℃ to 14 ℃, and the present disclosure is not limited in particular.
Specifically, under the working condition of low-temperature running of the electric vehicle, the passenger compartment has a dehumidification request and the battery has a refrigeration request, at the moment, the compressor 21 is started, the heated refrigerant flows through the stop valve 25 and the stop valve 251 from the outlet of the compressor 21 in two paths, and the first path flows through the stop valve 25 and then reaches the indoor condenser 22 for condensation and heat release; the second path of refrigerant flows through the stop valve 251 and then reaches the second plate heat exchanger 11 to exchange heat with the antifreeze in the motor water system loop, and the refrigerant is cooled and the antifreeze is heated; the heated antifreeze flows through a low-temperature radiator 43 to exchange heat with the outside air to reduce the temperature, flows through a switch three-way water valve 44 to reach an inlet of a motor water pump 41, flows through a motor and an electric control system 42 after being pressurized, and then reaches the second plate heat exchanger 11 to form a first antifreeze circulation; the cooled refrigerant passes through the one-way valve 27 and then is shunted to the electromagnetic expansion valve 26 and the battery expansion valve 261, is evaporated and absorbs heat in the indoor evaporator 24 and the first plate heat exchanger 10 respectively after throttling, finally converges to reach the liquid-gas separation tank 24 and then enters the compressor 21, and a refrigerant cycle is formed; the antifreeze solution cooled by the first plate heat exchanger 10 flows to the battery pack 32 under the action of the battery water pump 21, and returns to the battery water pump 21 after being cooled, so that a second antifreeze solution circulation is formed. Thus, the electric vehicle can realize the effects of dehumidifying the passenger compartment and refrigerating the battery simultaneously through the first plate heat exchanger 10 and the second plate heat exchanger 11 under the low-temperature running working condition.
In the embodiment of the present disclosure, as shown in fig. 4, when the electric vehicle is in a low-temperature driving condition, the passenger compartment has a dehumidification request and the battery has a heating request. At this time, the compressor 21 is started, the heated refrigerant flows through the stop valve 25 and the stop valve 254 in two paths from the outlet of the compressor 21, and the first path flows through the stop valve 25 and then reaches the indoor condenser 22 for condensation and heat release; the second path of refrigerant passes through the stop valve 254 and then reaches the first plate heat exchanger 10, exchanges heat with the antifreeze in the motor water system loop, and is cooled by the refrigerant and heated by the antifreeze; the heated antifreeze flows through the battery pack 32 to heat the antifreeze and then returns to the inlet of the battery water pump 31 to form a first antifreeze circulation; the cooled refrigerant flows through the one-way valve 271, then converges with the first refrigerant, then is distributed to the electromagnetic expansion valve 26 and the battery expansion valve 261, is evaporated and absorbs heat in the indoor evaporator 23 and the second plate heat exchanger 10 respectively after throttling, finally converges to the liquid-gas separation tank 24 and then enters the compressor 21, and a refrigerant cycle is formed; the antifreeze solution cooled by the second plate heat exchanger 11 flows to the on-off three-way water valve 44 under the action of the motor water pump 41, is pressurized by the motor water pump 41, and then flows through the motor and the electric control system 42 to form a first antifreeze solution circulation. Thus, the electric vehicle can realize the effects of dehumidifying the passenger compartment and heating the battery simultaneously through the first plate heat exchanger 10 and the second plate heat exchanger 11 under the low-temperature running working condition.
In the embodiment of the present description, as shown in fig. 5, in a low-temperature driving condition of the electric vehicle, both the passenger compartment and the battery have a heating request, at this time, the compressor 21 is started, the heated refrigerant flows through the stop valve 25 and the stop valve 254 in two paths from the outlet of the compressor 21, and the first path flows through the stop valve 25 and then reaches the indoor condenser 22 for condensation and heat release; the second path of refrigerant passes through a stop valve 2542 and then reaches the first plate heat exchanger 10, so that heat exchange is carried out between the second path of refrigerant and the antifreeze in the motor water system loop, and the refrigerant is cooled and the antifreeze is heated; the heated antifreeze flows through the battery pack 32 to heat the antifreeze and then returns to the inlet of the battery water pump 31 to form a first antifreeze circulation; the cooled refrigerant flows through the one-way valve 271 and then converges with the first refrigerant, is subjected to throttling action by the battery expansion valve 261 and then is evaporated and absorbs heat in the second plate heat exchanger 11, finally reaches the liquid-gas separation tank 24 and then enters the compressor 21, so that a refrigerant cycle is formed; the antifreeze cooled by the second plate heat exchanger 11 flows to the on-off three-way water valve 44 under the action of the motor water pump 41, and flows through the motor and the electric control system 42 after being pressurized by the motor water pump 41 to form a second antifreeze circulation. Therefore, under the working condition of low-temperature running of the electric vehicle, the effect of heating the passenger compartment and the battery simultaneously can be realized through the first plate heat exchanger 10 and the second plate heat exchanger 11.
In the embodiment of the specification, the first plate type heat exchanger 10 and the second plate type heat exchanger 11 are adopted, and the first plate type heat exchanger 10 and the second plate type heat exchanger 11 can be arranged inside the electric vehicle instead of being arranged at the front end of the electric vehicle, so that the arrangement space of the front end of the electric vehicle is increased, and the probability of frosting caused by arranging the heat exchangers outdoors is reduced; heat exchange is carried out among the three systems through the two plate heat exchangers, so that heat exchange can be realized under low temperature conditions; compared with the prior art, the whole vehicle heat management system has the advantages of fewer types and total number of parts, high universality of the parts and capability of reducing cost.
The invention provides an electric vehicle in a second aspect, which comprises a vehicle body of the electric vehicle and the whole vehicle thermal management system arranged in the vehicle body.
In an optional embodiment, the whole vehicle thermal management system comprises a refrigerant system loop, a battery water system loop, a motor water system loop, a first plate heat exchanger and a second plate heat exchanger which are arranged in the electric vehicle; wherein the first plate heat exchanger is configured to couple the refrigerant system loop and the battery water system loop, and the second plate heat exchanger is configured to couple the refrigerant system loop and the electric machine water system loop.
In an alternative embodiment, the refrigerant system circuit includes a compressor, an indoor condenser, an indoor evaporator, and a liquid-gas separation tank connected by refrigerant lines.
In an alternative embodiment, the refrigerant system circuit further includes a shutoff valve, a battery expansion valve, and a check valve disposed on the refrigerant line.
In an alternative embodiment, the battery water system circuit includes a battery water pump and a battery pack connected by a first water line.
In an optional embodiment, the electric motor water system loop comprises an electric motor water pump, an electric motor, an electric control system and a low-temperature radiator which are connected through a second water pipeline, and a switch three-way water valve arranged on the second water pipeline.
In an alternative embodiment, the first plate heat exchanger includes a first flow passage in communication with the refrigerant line and a second flow passage in communication with the first water line.
In an alternative embodiment, the second plate heat exchanger includes a third flow passage in communication with the refrigerant line and a fourth flow passage in communication with the second water line.
In an optional implementation manner, the entire vehicle thermal management system further comprises an electronic fan arranged at the front end of the electric vehicle, and the electronic fan is arranged between the low-temperature radiator and a passenger compartment of the electric vehicle.
In an optional implementation mode, the whole vehicle thermal management system further comprises an air conditioning box, wherein an air blower, the indoor evaporator, the air door mechanism, the indoor condenser and the air heater are arranged in the air conditioning box.
The beneficial effects of the embodiment of the specification are as follows:
based on the above technical solution, since the first plate heat exchanger 10 is used for coupling the refrigerant system loop with the battery water system loop, and the second plate heat exchanger 11 is used for coupling the refrigerant system loop with the motor water system loop, the refrigerant in the refrigerant system loop and the antifreeze in the battery water system loop can exchange heat through the first plate heat exchanger, and the refrigerant in the refrigerant system loop and the antifreeze in the motor water system loop can exchange heat through the second plate heat exchanger 11, so that heat exchange between the three systems through the two plate heat exchangers is realized, and heat exchange can also be realized under low temperature conditions; compared with the prior art, the whole vehicle heat management system has the advantages of fewer types and total number of parts, high universality of the parts and capability of reducing cost.
While preferred embodiments of the present specification 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 changes and modifications that fall within the scope of the specification.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present specification without departing from the spirit and scope of the specification. Thus, if such modifications and variations of the present specification fall within the scope of the claims of the present specification and their equivalents, the specification is intended to include such modifications and variations.
Claims (10)
1. The whole vehicle thermal management system of the electric vehicle is characterized by comprising a refrigerant system loop, a battery water system loop, a motor water system loop, a first plate heat exchanger and a second plate heat exchanger which are arranged in the electric vehicle; wherein the first plate heat exchanger is configured to couple the refrigerant system loop and the battery water system loop, and the second plate heat exchanger is configured to couple the refrigerant system loop and the electric machine water system loop.
2. The vehicle thermal management system of claim 1, wherein the refrigerant system circuit comprises a compressor, an indoor condenser, an indoor evaporator, and a liquid-gas separation tank connected by refrigerant lines.
3. The finished vehicle thermal management system of claim 2, wherein said refrigerant system loop further comprises a shut-off valve, a battery expansion valve, and a check valve disposed on said refrigerant line.
4. The vehicle finishing heat management system of claim 3, wherein the battery water system loop comprises a battery water pump and a battery pack connected by a first water line.
5. The vehicle thermal management system of claim 4, wherein the electric motor water system loop comprises an electric motor water pump, an electric motor and electric control system and a low-temperature radiator which are connected through a second water pipeline, and a switch three-way water valve is arranged on the second water pipeline.
6. The vehicle thermal management system of claim 5, wherein the first plate heat exchanger includes a first flow passage in communication with the refrigerant line and a second flow passage in communication with the first water line.
7. The vehicle thermal management system of claim 6, wherein the second plate heat exchanger includes a third flow passage and a fourth flow passage, the third flow passage being in communication with the refrigerant line, the fourth flow passage being in communication with the second water line.
8. The vehicle thermal management system of any of claims 1-7, further comprising an electronic fan disposed at a front end of the electric vehicle, the electronic fan being disposed between the cryogenic heat sink and a passenger compartment of the electric vehicle.
9. The vehicle thermal management system of claim 8, further comprising an air conditioning cabinet, wherein the air blower, the indoor evaporator, a damper mechanism, the indoor condenser and an air heater are disposed in the air conditioning cabinet.
10. An electric vehicle, characterized by comprising a vehicle body of the electric vehicle and the entire vehicle thermal management system according to any one of claims 1 to 9 arranged in the vehicle body.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011132951.6A CN112498048A (en) | 2020-10-21 | 2020-10-21 | Whole car thermal management system and electric motor car of electric motor car |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011132951.6A CN112498048A (en) | 2020-10-21 | 2020-10-21 | Whole car thermal management system and electric motor car of electric motor car |
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| CN208931069U (en) * | 2018-09-05 | 2019-06-04 | 北京新能源汽车股份有限公司 | Whole car thermal management system and car |
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