CN112428776A - Automobile heat pump air conditioning system and automobile with same - Google Patents
Automobile heat pump air conditioning system and automobile with same Download PDFInfo
- Publication number
- CN112428776A CN112428776A CN202011299998.1A CN202011299998A CN112428776A CN 112428776 A CN112428776 A CN 112428776A CN 202011299998 A CN202011299998 A CN 202011299998A CN 112428776 A CN112428776 A CN 112428776A
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- conditioning system
- heat pump
- battery
- pump air
- automobile
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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
- B60H1/00007—Combined heating, ventilating, or cooling devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/02—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant
- B60H1/04—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant from cooling liquid of the plant
Abstract
The invention discloses an automobile heat pump air conditioning system and an automobile with the same. This vehicle heat pump air conditioning system includes: the automobile heat pump air conditioning system comprises a refrigerant loop and a first cooling liquid loop, wherein an electric control unit, a motor and a battery pack are arranged in the first cooling liquid loop, the refrigerant loop and the first cooling liquid loop are communicated with a battery cooling module, and in a heating mode, the automobile heat pump air conditioning system is suitable for recovering heat of the electric control unit, the motor and the battery pack by using the battery cooling module for heating. According to the automobile heat pump air-conditioning system, the battery cooling module can be used for recovering heat of the electric control unit, the motor and the battery pack for heating the passenger compartment, so that the effective utilization of waste heat is realized, and the influence of air-conditioning heating on the endurance mileage of the whole automobile is favorably reduced.
Description
Technical Field
The invention relates to the technical field of automobile air conditioners, in particular to an automobile heat pump air conditioning system and an automobile with the same.
Background
At present, most heating of the electric automobile is still heated by using the traditional PTC, the heating efficiency is low (COP is less than 1), the energy consumption is large, and the endurance mileage of the whole automobile is greatly influenced under the heating condition in winter.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the above-mentioned problems in the prior art. Therefore, the invention provides an automobile heat pump air-conditioning system which can greatly improve the heating efficiency.
The invention also provides an automobile with the automobile heat pump air-conditioning system.
The heat pump air conditioning system for the automobile according to the embodiment of the invention comprises: the automobile heat pump air conditioning system comprises a refrigerant loop and a first cooling liquid loop, wherein an electric control unit, a motor and a battery pack are arranged in the first cooling liquid loop, the refrigerant loop and the first cooling liquid loop are communicated with a battery cooling module, and in a heating mode, the automobile heat pump air conditioning system is suitable for recovering heat of the electric control unit, the motor and the battery pack by using the battery cooling module for heating.
According to the automobile heat pump air-conditioning system provided by the embodiment of the invention, the battery cooling module can be used for recovering the heat of the electric control unit, the motor and the battery pack for heating the passenger compartment, so that the effective utilization of waste heat is realized, and the influence of air-conditioning heating on the endurance mileage of the whole automobile is favorably reduced.
According to some embodiments of the invention, the automotive heat pump air conditioning system further comprises: the refrigerant loop and the second cooling liquid loop are both communicated with the water-cooled condenser, a warm air core body and a warm air water pump are further arranged in the second cooling liquid loop, and when the warm air water pump works, the water-cooled condenser exchanges heat with cooling liquid in the second cooling liquid loop; when the warm air water pump does not work, the water-cooled condenser does not exchange heat with the cooling liquid in the second cooling liquid loop.
According to some embodiments of the present invention, a compressor, an evaporator, and a heat exchanger are further disposed in the refrigerant circuit, and the heat exchanger is used as a condenser in a cooling mode; in the heating mode, the heat exchanger is used as an evaporator; the heat exchanger is disposed in an external environment.
According to some embodiments of the invention, the automotive heat pump air conditioning system further comprises: when the change-over switch is switched off, the automobile heat pump air-conditioning system is in the refrigeration mode, and the water-cooled condenser is communicated with the heat exchanger firstly and then communicated with the evaporator; when the change-over switch is switched on, the automobile heat pump air conditioning system is in the heating mode, and the water-cooled condenser is communicated with the evaporator and then communicated with the heat exchanger.
Optionally, an electronic expansion valve is disposed on both the inlet side of the evaporator and the inlet side of the heat exchanger.
According to some embodiments of the invention, the inlet side of the evaporator has a coolant branch circulating to the battery cooling module.
According to some embodiments of the invention, the first coolant circuit comprises: the motor branch circuit and the battery branch circuit are arranged in parallel.
Specifically, a motor water pump, the electronic control unit and the motor which are connected in series are arranged in the motor branch, and the motor water pump is used for driving cooling liquid to circulate in the motor branch.
Specifically, the battery pack and the battery water pump which are connected in series are arranged in the battery branch, and the battery water pump is used for driving cooling liquid to circulate in the battery branch.
Specifically, the first coolant circuit further includes: the cooling module branch, battery cooling module sets up in the cooling module branch, the cooling module branch with the motor branch road, the battery branch road sets up in parallel.
According to another aspect of the invention, the automobile comprises the automobile heat pump air conditioning system.
The advantages of the automobile and the automobile heat pump air conditioning system are the same compared with the prior art, and are not described again.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a schematic diagram of a heat pump air conditioning system for a vehicle in a cooling mode;
fig. 2 is a schematic diagram of a heat pump air conditioning system for a vehicle in a heating mode.
Reference numerals:
the heat pump air conditioning system comprises an automobile heat pump air conditioning system 100, a refrigerant circuit 10, a water-cooled condenser 11, a compressor 12, an evaporator 13, a heat exchanger 14, a first electronic expansion valve 15, a second electronic expansion valve 16, a temperature and pressure sensor 17, a third electronic expansion valve 18, a refrigerant branch 19, a first change-over switch 191, a second change-over switch 192, a second cooling liquid circuit 20, a warm air core 21, a warm air water pump 22, a high-pressure water heater 23, a first cooling liquid circuit 30, a motor branch 31, a motor 311, an electronic control unit 312, a motor water pump 313, a battery branch 32, a battery pack 321, a battery water pump 322, a motor radiator 33, a battery cooling module 34, a fourth electronic expansion valve 341, a cooling module branch 35, a fan 40 and a fan 50.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the present invention, unless otherwise expressly stated or limited, the terms "communicate," "connect," and the like are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The heat pump air conditioning system 100 for a vehicle according to an embodiment of the present invention will be described in detail with reference to fig. 1 to 2.
Referring to fig. 1 to 2, a heat pump air conditioning system 100 for a vehicle according to an embodiment of the present invention may include: a refrigerant circuit 10, a first cooling liquid circuit 30, and a second cooling liquid circuit 20.
Both the coolant circuit 10 and the first coolant circuit 30 communicate with the battery cooling module 34.
The refrigerant circuit 10 is further provided with a compressor 12, an evaporator 13, and a heat exchanger 14, wherein the compressor 12 compresses a refrigerant into a high-temperature and high-pressure refrigerant, and the refrigerant is adapted to evaporate and absorb heat in the evaporator 13. In the cooling mode, the heat exchanger 14 is used as a condenser, and the refrigerant is condensed in the heat exchanger 14 to release heat; in the heating mode, the heat exchanger 14 is used as an evaporator, and the refrigerant evaporates and absorbs heat in the heat exchanger 14.
The compressor 12, the water-cooled condenser 11, the evaporator 13, and the heat exchanger 14 are connected in series in the refrigerant circuit 10. The refrigerant circuit 10 is further provided with a plurality of temperature and pressure sensors 17, and the plurality of temperature and pressure sensors 17 are used for detecting the temperature and the pressure of a plurality of position points in the refrigerant circuit 10 so as to ensure the normal operation of the automobile heat pump air conditioning system 100.
The first cooling liquid loop 30 is further provided with an electric control unit 312, a motor 311 and a battery pack 321, during a heating mode, the automobile heat pump air-conditioning system 100 is suitable for recovering heat of the electric control unit 312, the motor 311 and the battery pack 321 by using the battery cooling module 34 for heating, specifically, the electric control unit 312, the motor 311 and the battery pack 321 generate heat during operation, the coolant flows through the electric control unit 312, the motor 311 and the battery pack 321 and is heated, and the battery cooling module 34 transfers the heat of the coolant in the first cooling liquid loop 30 to the coolant in the coolant loop 10, so that waste heat is recovered and utilized, waste caused by heat dissipation to air is avoided, meanwhile, waste heat is used for heating, a part of energy of an automobile can be saved, and more energy is reserved to ensure the endurance mileage of the automobile.
The refrigerant circuit 10 and the second coolant circuit 20 are both communicated with the water-cooled condenser 11. Specifically, the water-cooled condenser 11 has a refrigerant inlet and a refrigerant outlet adapted to communicate with the refrigerant circuit 10, and a coolant inlet and a coolant outlet adapted to communicate with the second coolant circuit 20. The coolant in the coolant loop 10 enters the water-cooled condenser 11 through the coolant inlet and then flows out of the water-cooled condenser 11 through the coolant outlet, and the coolant in the second coolant loop 20 enters the water-cooled condenser 11 through the coolant inlet and then flows out of the water-cooled condenser 11 through the coolant outlet.
The second cooling liquid loop 20 is also provided with a warm air core 21, a warm air water pump 22 and a high-pressure water heater 23, and the warm air core 21, the water-cooled condenser 11, the warm air water pump 22 and the high-pressure water heater 23 are connected in series in the second cooling liquid loop 20.
The fan 50 is disposed at one side of the warm air core 21, and the fan 50 is adapted to generate air passing through the warm air core 21, thereby bringing heat of the warm air core 21 into the passenger compartment. Thus, when the heat pump air conditioning system 100 is in the heating mode, the temperature of the passenger compartment can be rapidly increased, so that the heating requirement of the user can be met.
The warm air pump 22 is used to drive the coolant to circulate through the second coolant circuit 20. When the warm air water pump 22 works, the water-cooled condenser 11 exchanges heat with the cooling liquid in the second cooling liquid loop 20; when the warm air pump 22 is not operated, the water-cooled condenser 11 does not exchange heat with the coolant in the second coolant circuit 20.
According to the automobile heat pump air-conditioning system 100 provided by the embodiment of the invention, the battery cooling module 34 can be used for recovering the heat of the electric control unit 312, the motor 311 and the battery pack 321 for heating the passenger compartment, so that the effective utilization of waste heat is realized, and the influence of air-conditioning heating on the endurance mileage of the whole automobile is favorably reduced.
Alternatively, heat exchanger 14 is disposed in an external environment external to the automobile. In this way, in the heating mode, the refrigerant in the heat exchanger 14 evaporates and absorbs heat, so that the heat in the external environment can be transported to the passenger compartment for heating, and compared with the traditional PTC heating efficiency (COP < 1), the efficiency (COP > 1) of the heat pump air-conditioning heating process is obviously improved by arranging the heat exchanger 14 in the external environment outside the automobile.
The heat pump air conditioning system 100 of the vehicle may further include: when the change-over switch is switched off, the automobile heat pump air-conditioning system 100 is in a refrigeration mode, and the water-cooled condenser 11 is firstly communicated with the heat exchanger 14 and then communicated with the evaporator 13; when the switch is turned on, the heat pump air conditioning system 100 is in a heating mode, and the water-cooled condenser 11 is firstly communicated with the evaporator 13 and then communicated with the heat exchanger 14.
Referring to fig. 1 to 2, the switch includes a first switch 191 and a second switch 192. When the first switch 191 and the second switch 192 are turned off, the heat pump air conditioning system 100 of the automobile is in a cooling mode, the refrigerant enters the water-cooled condenser 11 after passing through the compressor 12, at this time, the warm air water pump 22 does not work, the refrigerant in the water-cooled condenser 11 does not exchange heat with the coolant in the second coolant loop 20, the refrigerant enters the heat exchanger 14 again, the heat exchanger 14 is used as a condenser, the refrigerant is condensed to release heat, and then one path of the refrigerant flows through the evaporator 13 to finish cooling the passenger compartment; the other flow into the battery cooling module 34 to complete the cooling of the battery pack.
When the first switch 191 and the second switch 192 are turned on, the heat pump air conditioning system 100 of the automobile is in a heating mode, the refrigerant is compressed into a high-temperature refrigerant by the compressor 11 and then enters the water-cooled condenser 11, at this time, the warm air water pump 22 works, the refrigerant in the water-cooled condenser 11 exchanges heat with the coolant in the second coolant loop 20, so that the refrigerant in the water-cooled condenser 11 becomes a medium-temperature refrigerant, and is divided into two paths after passing through the second switch 192, wherein one path enters the evaporator 13 for further reducing the heat exchange temperature and then enters the heat exchanger 14, the heat exchanger 14 serves as an evaporator, and the refrigerant is evaporated and absorbs heat and then returns to the compressor 12; the other path flows through the battery cooling module 34, and recovers heat of the electronic control unit 312, the motor 311, and the battery pack 321, and then returns to the compressor 12.
Alternatively, the inlet side of the evaporator 13 and the inlet side of the heat exchanger 14 are each provided with an electronic expansion valve. Referring to fig. 1 to 2, the electronic expansion valves include a first electronic expansion valve 15, a second electronic expansion valve 16, and a third electronic expansion valve 18, and a fourth electronic expansion valve 341 is disposed on an inlet side of the battery cooling module 34. By controlling the valve sizes of the first electronic expansion valve 15, the second electronic expansion valve 16, the third electronic expansion valve 18, and the fourth electronic expansion valve 341, the throttle expansion degrees of the refrigerant at the first electronic expansion valve 15, the second electronic expansion valve 16, the third electronic expansion valve 18, and the fourth electronic expansion valve 341 can be controlled.
Specifically, when the heat pump air conditioning system 100 for an automobile is in the cooling mode, the water-cooled condenser 11 is first communicated with the heat exchanger 14, and then communicated with the evaporator 13, the inlet side of the evaporator 13 is the first electronic expansion valve 15, and the inlet side of the heat exchanger 14 is the third electronic expansion valve 18. The refrigerant enters the heat exchanger 14 through the third electronic expansion valve 18, enters the evaporator 13 through the first electronic expansion valve 15, and enters the battery cooling module 34 through the fourth electronic expansion valve 341, at this time, the third electronic expansion valve 18 may only perform a conduction function, and the first electronic expansion valve 15 and the fourth electronic expansion valve 341 perform a throttling expansion function.
When the heat pump air conditioning system 100 is in the heating mode, the water-cooled condenser 11 is first communicated with the evaporator 13 and then communicated with the heat exchanger 14, the inlet side of the evaporator 13 is a first electronic expansion valve 15, and the inlet side of the heat exchanger 14 is a second electronic expansion valve 16. The refrigerant enters the evaporator 13 through the first electronic expansion valve 15, enters the heat exchanger 14 through the second electronic expansion valve 16, and enters the battery cooling module 34 through the fourth electronic expansion valve 341, at this time, the first electronic expansion valve 15 may only perform a conduction function, and the second electronic expansion valve 16 and the fourth electronic expansion valve 341 perform a throttling expansion function.
In the description of the present invention, it is to be understood that the terms "first", "second" and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
The inlet side of the evaporator 13 has a refrigerant branch 19 that flows to the battery cooling module 34, that is, the other path of the refrigerant enters the refrigerant branch 19. When the heat pump air conditioning system 100 is in the heating mode, the refrigerant in the refrigerant branch 19 is used to recover heat of the electronic control unit 312, the motor 311, and the battery pack 321.
The first cooling liquid circuit 30 includes: the motor branch 31 and the battery branch 32 are connected in parallel.
Specifically, a motor water pump 313, an electronic control unit 312 and a motor 311 are arranged in the motor branch 31 in series, and the motor water pump 313 is used for driving the cooling liquid to circulate in the motor branch 31.
Specifically, a battery pack 321 and a battery water pump 322 are arranged in the battery branch 32 in series, and the battery water pump 322 is used for driving the coolant to circulate in the battery branch 32.
Specifically, the first coolant circuit 30 further includes: the cooling module branch 35, the battery cooling module 34 are disposed in the cooling module branch 35, and the cooling module branch 35 is disposed in parallel with the motor branch 31 and the battery branch 32.
The motor branch 31, the battery branch 32 and the cooling module branch 35 may be connected in parallel and then may be connected in series with the motor radiator 33. However, when the heat of the electronic control unit 312, the motor 311, and the battery pack 321 needs to be recovered, the motor heat sink 33 is usually closed to prevent the heat of the electronic control unit 312, the motor 311, and the battery pack 321 from dissipating at the motor heat sink 33.
Referring to fig. 1, a fan 40 may be further provided at one side of the motor radiator 33, and the fan 40 may be used to generate an air flow passing through the motor radiator 33 and the heat exchanger 14.
According to another aspect of the present invention, the vehicle comprises the vehicle heat pump air conditioning system 100 of the above embodiment.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example" or "some examples" or the like are intended to mean 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 invention. 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.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. The automobile heat pump air-conditioning system is characterized in that the refrigerant loop and the first cooling liquid loop are communicated with a battery cooling module, and in a heating mode, the automobile heat pump air-conditioning system is suitable for recovering heat of the electric control unit, the motor and the battery pack by utilizing the battery cooling module for heating.
2. The vehicle heat pump air conditioning system of claim 1, further comprising: the refrigerant loop and the second cooling liquid loop are both communicated with the water-cooled condenser, a warm air core body and a warm air water pump are further arranged in the second cooling liquid loop, and when the warm air water pump works, the water-cooled condenser exchanges heat with cooling liquid in the second cooling liquid loop; when the warm air water pump does not work, the water-cooled condenser does not exchange heat with the cooling liquid in the second cooling liquid loop.
3. The automotive heat pump air conditioning system according to claim 2, wherein a compressor, an evaporator and a heat exchanger are further arranged in the refrigerant loop, and the heat exchanger is used as a condenser in a refrigeration mode; in the heating mode, the heat exchanger is used as an evaporator; the heat exchanger is disposed in an external environment.
4. The heat pump air conditioning system for vehicles of claim 3, further comprising: when the change-over switch is switched off, the automobile heat pump air-conditioning system is in the refrigeration mode, and the water-cooled condenser is communicated with the heat exchanger firstly and then communicated with the evaporator; when the change-over switch is switched on, the automobile heat pump air conditioning system is in the heating mode, and the water-cooled condenser is communicated with the evaporator and then communicated with the heat exchanger.
5. The heat pump air conditioning system of claim 3, wherein an electronic expansion valve is provided on both the inlet side of the evaporator and the inlet side of the heat exchanger.
6. The heat pump air conditioning system of claim 3, wherein the inlet side of the evaporator has a refrigerant branch that circulates to the battery cooling module.
7. The automotive heat pump air conditioning system of claim 1, wherein the first coolant loop comprises: the motor branch circuit and the battery branch circuit are arranged in parallel.
8. The automobile heat pump air-conditioning system according to claim 7, wherein a motor water pump, the electronic control unit and the motor are arranged in the motor branch in series, and the motor water pump is used for driving a cooling liquid to circulate in the motor branch;
the battery pack and the battery water pump are connected in series and are arranged in the battery branch, and the battery water pump is used for driving cooling liquid to circulate in the battery branch.
9. The automotive heat pump air conditioning system of claim 7 or 8, characterized in that the first coolant circuit further comprises: the cooling module branch, battery cooling module sets up in the cooling module branch, the cooling module branch with the motor branch road, the battery branch road sets up in parallel.
10. A vehicle comprising the vehicle heat pump air conditioning system of any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011299998.1A CN112428776A (en) | 2020-11-19 | 2020-11-19 | Automobile heat pump air conditioning system and automobile with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011299998.1A CN112428776A (en) | 2020-11-19 | 2020-11-19 | Automobile heat pump air conditioning system and automobile with same |
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| Publication Number | Publication Date |
|---|---|
| CN112428776A true CN112428776A (en) | 2021-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011299998.1A Pending CN112428776A (en) | 2020-11-19 | 2020-11-19 | Automobile heat pump air conditioning system and automobile with same |
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| CN110588283A (en) * | 2019-09-19 | 2019-12-20 | 一汽轿车股份有限公司 | Cooling system of electric vehicle |
| CN111746225A (en) * | 2020-06-17 | 2020-10-09 | 北京新能源汽车股份有限公司 | Electric automobile's thermal management system and electric automobile that has it |
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|---|---|---|---|---|
| JP2010111269A (en) * | 2008-11-06 | 2010-05-20 | Mitsubishi Heavy Ind Ltd | Vehicular air-conditioning system, and method for operation control threrefor |
| CN102632790A (en) * | 2012-04-28 | 2012-08-15 | 长城汽车股份有限公司 | Electric automobile and heat control system thereof |
| CN107813673A (en) * | 2016-09-13 | 2018-03-20 | 现代自动车株式会社 | Heat pump for vehicle |
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Application publication date: 20210302 |