CN110435384B - Heat pump air-conditioning system of electric automobile - Google Patents
Heat pump air-conditioning system of electric automobile Download PDFInfo
- Publication number
- CN110435384B CN110435384B CN201910582510.7A CN201910582510A CN110435384B CN 110435384 B CN110435384 B CN 110435384B CN 201910582510 A CN201910582510 A CN 201910582510A CN 110435384 B CN110435384 B CN 110435384B
- Authority
- CN
- China
- Prior art keywords
- vehicle
- heat exchanger
- electric compressor
- battery
- air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000004378 air conditioning Methods 0.000 title claims abstract description 33
- 239000007788 liquid Substances 0.000 claims abstract description 27
- 238000010438 heat treatment Methods 0.000 claims abstract description 21
- 238000005057 refrigeration Methods 0.000 claims abstract description 14
- 238000001816 cooling Methods 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 24
- 238000010792 warming Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims 1
- 239000003507 refrigerant Substances 0.000 description 40
- 238000002955 isolation Methods 0.000 description 18
- 239000002826 coolant Substances 0.000 description 7
- 230000009471 action Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 239000002918 waste heat Substances 0.000 description 4
- 238000005485 electric heating Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Images
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00357—Air-conditioning arrangements specially adapted for particular vehicles
- B60H1/00385—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell
- B60H1/00392—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell for electric vehicles having only electric drive means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00485—Valves for air-conditioning devices, e.g. thermostatic valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/02—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant
- B60H1/14—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant otherwise than from cooling liquid of the plant, e.g. heat from the grease oil, the brakes, the transmission unit
- B60H1/143—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant otherwise than from cooling liquid of the plant, e.g. heat from the grease oil, the brakes, the transmission unit the heat being derived from cooling an electric component, e.g. electric motors, electric circuits, fuel cells or batteries
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention discloses an electric automobile heat pump air conditioning system, which realizes a first in-vehicle refrigeration loop or a battery heating loop through an external heat exchanger, a first expansion valve and an in-vehicle first heat exchanger; after a first heat exchanger in the vehicle and a second heat exchanger in the vehicle are connected in series, a first branch is connected with a suction inlet of an electric compressor through a flow control valve and a gas-liquid separator to form an air-supplementing enthalpy-increasing loop, and a second branch forms an in-vehicle heating loop through a first expansion valve and a heat exchanger outside the vehicle; after the electric compressor is connected with a first heat exchanger in the vehicle, a third branch is connected with a second expansion valve and the second heat exchanger in the vehicle to form a second refrigeration loop in the vehicle, and a fourth branch is connected with the first expansion valve and a heat exchanger outside the vehicle to form a battery cooling loop; the heat pump air conditioning system is combined with the battery temperature control system, so that the low-temperature heating performance of the air conditioner is improved, the cold start problem of the low-temperature battery is solved, and the refrigeration in the vehicle and the battery cooling are realized at the same time in a high-temperature environment.
Description
Technical Field
The invention relates to the field of air conditioning systems of electric automobiles, in particular to a heat pump air conditioning system of an electric automobile.
Background
With the increasing maturity of electric automobile motors, batteries and electric control technologies and the rapid development of electric automobiles, the requirement on the comfort of passengers of the electric automobiles is higher and higher, meanwhile, the low-temperature starting performance of the electric automobiles is one of the main problems of the battery systems of the electric automobiles at present, and the performance and the service life of the batteries are still the bottleneck of the development of the electric automobile industry.
At present, an electric compressor refrigerant is generally adopted for cooling for air conditioning of the electric automobile, and in the heating process, because the waste heat of an engine is not utilized, an electric heating auxiliary system is generally adopted for heating, the energy efficiency ratio of the electric heating system is less than 1, the heating efficiency is low, the power consumption is high, and the cruising mileage of the electric automobile is seriously influenced; although the existing heat pump air-conditioning system adopts three heat exchangers for heating, an air-supplementing and enthalpy-increasing loop is not provided, so that the problems that the exhaust temperature of the heat pump air-conditioning system is too high in a low-temperature environment and the heat exchanger outside the vehicle is frosted are caused, and the heat exchange performance and the low-temperature heating performance of the heat pump air-conditioning system are influenced; the prior art does not control the temperature of the battery, however, the temperature has a large influence on the performance of the battery, including the resistance, the charge and discharge performance, the safety, the service life and the like of the battery; the output of power and energy of the battery is influenced by too low temperature, the power requirement of cold start of the electric automobile cannot be met, the service life of the battery is shortened due to too high temperature, and the safety is reduced.
Disclosure of Invention
The invention aims to provide a heat pump air-conditioning system of an electric automobile, which solves the problems in the prior art, improves the low-temperature heating performance of the heat pump air-conditioning system, reduces energy consumption, improves heating efficiency and realizes temperature control of a battery.
In order to achieve the purpose, the invention provides the following scheme: the invention provides an electric automobile heat pump air conditioning system, which comprises: the system comprises an electric compressor, an in-vehicle first heat exchanger, an in-vehicle second heat exchanger, a flow control valve, a gas-liquid separator, a first expansion valve, an out-vehicle heat exchanger, a water pump, a battery pack and a second expansion valve;
the exhaust outlet of the electric compressor is connected with one end of the heat exchanger outside the vehicle, the other end of the heat exchanger outside the vehicle is connected with one end of the first heat exchanger inside the vehicle through the first expansion valve, and the other end of the first heat exchanger inside the vehicle is connected with the air suction inlet of the electric compressor through the gas-liquid separator to form a first refrigerating loop or a battery warming loop inside the vehicle;
the exhaust outlet of the electric compressor is connected with the first heat exchanger in the vehicle, the second heat exchanger in the vehicle and the first heat exchanger in the vehicle are connected in series and then divided into a first branch and a second branch, and the first branch comprises: the flow control valve and the gas-liquid separator are connected with the air suction inlet of the electric compressor to form an air-supplementing enthalpy-increasing loop; the second branch includes: the other end of the external heat exchanger is connected with the air suction inlet of the electric compressor through the gas-liquid separator to form an in-vehicle heating loop;
the exhaust outlet of the electric compressor is connected with the first heat exchanger in the vehicle and then is divided into a third branch and a fourth branch, and the third branch comprises: the other end of the second heat exchanger in the vehicle is connected with the suction inlet of the electric compressor through the flow control valve and the gas-liquid separator to form a second refrigeration loop in the vehicle; the fourth branch includes: the other end of the external heat exchanger is connected with the air suction inlet of the electric compressor through the gas-liquid separator to form a battery cooling loop;
the battery pack, the water pump and the heat exchanger outside the vehicle are connected in series to form a battery temperature control system.
Preferably, the electric compressor is a hermetic electric compressor.
Preferably, the exhaust outlet of the electric compressor is provided with a four-way reversing valve.
Preferably, a first electromagnetic valve, a second electromagnetic valve and a third electromagnetic valve are arranged in the electric automobile heat pump air conditioning system, and the switching of the first vehicle interior refrigerating circuit or the battery warming circuit, the vehicle interior heating circuit, the second vehicle interior refrigerating circuit and the battery cooling circuit is controlled through the switches of the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve.
Preferably, the first heat exchanger and the second heat exchanger are installed side by side, a blower is arranged on one side of the second heat exchanger, and the first heat exchanger and the blower are respectively arranged on the opposite sides of the second heat exchanger.
Preferably, the water pump and the battery pack are arranged on the same side of the exterior heat exchanger, and a fan is arranged on the other side of the exterior heat exchanger.
Preferably, an upper isolation plate and a lower isolation plate in the horizontal direction are arranged between the first heat exchanger in the vehicle and the second heat exchanger in the vehicle, the upper isolation plate is connected with the top end of the first heat exchanger in the vehicle and the top end of the second heat exchanger in the vehicle, the lower isolation plate is connected with the bottom end of the first heat exchanger in the vehicle and the bottom end of the second heat exchanger in the vehicle, an air deflector in the vertical direction is arranged between the upper isolation plate and the lower isolation plate, an air guide opening is formed in the upper isolation plate, the air guide opening is formed between the second heat exchanger in the vehicle and the air deflector, and an air guide cover is arranged on the air guide opening.
The invention discloses the following technical effects:
1. when the heat pump air-conditioning system heats in a vehicle, the refrigerant passes through the two heat exchangers in the vehicle, part of the controllable flow returns to the air inlet of the electric compressor to form an air-supplementing enthalpy-increasing loop, the medium-temperature and high-pressure refrigerant is supplemented to the air inlet of the compressor or a working cavity through the air-supplementing enthalpy-increasing loop, the refrigerant flow and the exhaust volume of the electric compressor are increased, the exhaust temperature of the electric compressor is reduced, the accurate control of the air-supplementing flow is realized, meanwhile, the enthalpy difference of the refrigerant of the heat exchanger outside the vehicle is increased through the air-supplementing enthalpy-increasing loop, and the heat exchange performance and the low-temperature heating performance of the heat pump air-conditioning system are improved;
2. when the vehicle is used for heating, the external heat exchanger and the battery heat exchanger are designed in a fusion mode, the refrigerant is exchanged with waste heat generated by the battery through the external heat exchanger to realize heating in the vehicle, the waste heat of a battery cooling system is fully utilized, the energy consumption is reduced, the heat exchange efficiency is improved, and meanwhile the problem that the external heat exchanger frosts during low-temperature heat exchange is effectively solved;
3. the invention can realize the refrigeration in the vehicle and the battery cooling control at the same time under the high-temperature environment through the combined action of the first expansion valve and the second expansion valve, thereby not only ensuring the comfort level in the vehicle, but also ensuring the normal use of the battery under the high-temperature environment.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a schematic structural diagram of a heat pump air conditioning system of an electric vehicle according to the present invention;
FIG. 2 is a schematic diagram of the in-vehicle refrigeration principle of the heat pump air conditioning system of the electric vehicle of the present invention;
FIG. 3 is a schematic diagram of the in-vehicle heating principle of the heat pump air conditioning system of the electric vehicle of the present invention;
FIG. 4 is a schematic diagram of the principle of temperature rise of the battery of the heat pump air conditioning system of the electric vehicle according to the present invention;
FIG. 5 is a schematic diagram of the principle of cooling the battery while refrigerating in the electric vehicle heat pump air conditioning system according to the present invention;
FIG. 6 is a schematic diagram of the principle structure of the temperature control system of the heat pump air conditioner battery of the electric vehicle of the present invention;
the system comprises a compressor, a four-way reversing valve, an in-vehicle first heat exchanger, a first electromagnetic valve, a second heat exchanger, an air blower, a first one-way valve, a flow control valve, a gas-liquid separator, a first expansion valve, a second one-way valve, a fan, an out-vehicle heat exchanger, a water pump, a battery pack, a second expansion valve, a third electromagnetic valve, an air guide cover, an air deflector, an upper isolation plate and a lower isolation plate, wherein the compressor is 1, the four-way reversing valve is 2, the first heat exchanger is 3, the second heat exchanger is 5, the air blower is 7, the first one-way valve is 8, the flow control valve is 9, the gas-liquid separator is 10, the first expansion valve is 11, the second one-way valve is 12, the fan is 13, the out-vehicle heat exchanger is 14, the water pump is 15, the battery pack is 17, the third electromagnetic valve is 18, the air guide cover is 19, the air deflector is 20, the upper isolation plate is 21, and the lower isolation plate is 22.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, 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 invention.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 1, the present invention provides an electric vehicle heat pump air conditioning system, including: the system comprises an electric compressor 1, an in-vehicle first heat exchanger 3, an in-vehicle second heat exchanger 6, a flow control valve 9, a gas-liquid separator 10, a first expansion valve 11, an out-vehicle heat exchanger 14, a water pump 15, a battery pack 16, a second expansion valve 17, a first electromagnetic valve 4, a second electromagnetic valve 5 and a third electromagnetic valve 18;
wherein, the electric compressor 1 is a closed type electric compressor, and the exhaust outlet of the electric compressor 1 is provided with a four-way reversing valve 2;
the first heat exchanger 3 in the vehicle and the second heat exchanger 6 in the vehicle are arranged side by side, one side of the second heat exchanger 6 in the vehicle is provided with a blower 7, the first heat exchanger 3 in the vehicle and the blower 7 are respectively arranged on the opposite sides of the second heat exchanger 6 in the vehicle, and the blower 7 is used for blowing heat around the first heat exchanger 3 in the vehicle or the second heat exchanger 6 in the vehicle into a vehicle cabin;
an upper isolation plate 21 and a lower isolation plate 22 in the horizontal direction are arranged between the first heat exchanger 3 in the vehicle and the second heat exchanger 6 in the vehicle, the upper isolation plate 21 is connected with the top ends of the first heat exchanger 3 in the vehicle and the second heat exchanger 6 in the vehicle, the lower isolation plate 22 is connected with the bottom ends of the first heat exchanger 3 in the vehicle and the second heat exchanger 6 in the vehicle, an air deflector 20 in the vertical direction is arranged between the upper isolation plate 21 and the lower isolation plate 22, an air guide opening is formed in the upper isolation plate 21 and is arranged between the second heat exchanger 6 in the vehicle and the air deflector 20, and an air guide cover 19 is arranged on the air guide opening;
the battery pack 16 is an energy source of the electric automobile, the water pump 15 and the battery pack 16 are arranged on the same side of the exterior heat exchanger 14, the fan 13 is arranged on the other side of the exterior heat exchanger 14, and the fan 13 is used for improving the heat exchange efficiency of the exterior heat exchanger 14;
the switch of the first vehicle interior refrigerating circuit or the battery temperature-raising circuit, the vehicle interior heating circuit, the second vehicle interior refrigerating circuit and the battery temperature-lowering circuit is controlled by the switch of the first electromagnetic valve 4, the second electromagnetic valve 5 and the third electromagnetic valve 18.
An exhaust outlet of the electric compressor 1 is connected with one end of an external heat exchanger 14, the other end of the external heat exchanger 14 is connected with one end of an in-vehicle first heat exchanger 3 through a first expansion valve 11, and the other end of the in-vehicle first heat exchanger 3 is connected with an air suction inlet of the electric compressor 1 through a gas-liquid separator 10 to form a first in-vehicle refrigeration loop or battery warming loop;
divide into third branch road and fourth branch road behind the first heat exchanger 3 in the electric compressor 1 exhaust outlet connection car, the third branch road includes: one end of a second heat exchanger 6 in the vehicle is connected through a second expansion valve 17, and the other end of the second heat exchanger 6 in the vehicle is connected with a suction inlet of the electric compressor 1 through a flow control valve 9 and a gas-liquid separator 10 to form a second refrigeration loop in the vehicle; the fourth branch includes: one end of an exterior heat exchanger 14 is connected through a first expansion valve 11, the other end of the exterior heat exchanger 14 is connected with a suction inlet of an electric compressor 1 through a gas-liquid separator 10, and a battery cooling loop is formed;
the battery pack 16, the water pump 15 and the exterior heat exchanger 14 are connected in series to form a battery temperature control system.
The working mode of the heat pump air-conditioning system of the electric automobile is as follows:
1. the in-vehicle refrigeration mode of the heat pump air-conditioning system of the electric vehicle is as follows:
referring to fig. 2, the second electromagnetic valve 5, the third electromagnetic valve 18 and the water pump 15 are closed, the first electromagnetic valve 4 and the air deflector 20 are opened, the electric compressor 1 discharges high-temperature and high-pressure refrigerant, the refrigerant enters the exterior heat exchanger 14 through the lower inlet and the left outlet of the four-way reversing valve 2 to exchange heat with air in the external environment and cool, and the fan 13 is turned on to improve heat exchange efficiency; the medium-temperature high-pressure refrigerant flowing out of the heat exchanger 14 outside the vehicle is changed into low-temperature low-pressure refrigerant through the throttling action of the first expansion valve 11, the low-temperature low-pressure refrigerant enters the first heat exchanger 3 inside the vehicle through the first electromagnetic valve 4 to absorb the heat of the air inside the vehicle, the air around the first heat exchanger 3 inside the vehicle is cooled, the air blower 7 blows the cold air around the first heat exchanger 3 inside the vehicle into the cabin of the vehicle to reduce the temperature inside the vehicle, and the refrigerant flowing out of the first heat exchanger 3 inside the vehicle enters the air suction inlet of the electric compressor 1 through the right inlet and the upper outlet of the four-way reversing valve 2 and the check valve 12 and the gas-liquid separator 10 to realize the refrigeration function inside the vehicle.
2. The in-vehicle heating mode of the heat pump air-conditioning system of the electric vehicle is as follows:
referring to fig. 3, the first electromagnetic valve 4, the third electromagnetic valve 18 and the water pump 15 are closed, the second electromagnetic valve 5 and the air deflector 20 are opened, the electric compressor 1 discharges a high-temperature and high-pressure refrigerant, the refrigerant enters the first heat exchanger 3 in the vehicle through the lower inlet and the right outlet of the four-way reversing valve 2 and exchanges heat with cold air in the environment in the vehicle, air around the first heat exchanger 3 in the vehicle is heated, the refrigerant flowing out of the first heat exchanger 3 in the vehicle enters the second heat exchanger 6 in the vehicle through the second electromagnetic valve 5 and exchanges heat with cold air in the vehicle again, air around the second heat exchanger 6 is heated, and the hot air around the first heat exchanger 3 in the vehicle and the second heat exchanger 6 in the vehicle is blown into the vehicle cabin by the air blower 7 to achieve temperature rise in the vehicle; on one hand, the medium-temperature high-pressure refrigerant flowing out of the second heat exchanger 6 in the vehicle enters an air inlet of the electric compressor 1 through the flow control valve 9 and the gas-liquid separator 10 to form an air-supplementing enthalpy-increasing loop; the medium-temperature high-pressure refrigerant flowing out of the second heat exchanger 6 in the vehicle enters the first expansion valve 11 through the first one-way valve 8, and is changed into low-temperature low-pressure refrigerant under the throttling action of the first expansion valve 11, the low-temperature low-pressure refrigerant enters the heat exchanger 14 outside the vehicle and exchanges heat with waste heat generated by cooling the battery pack 16, and the heat exchange efficiency is improved by opening the fan 13; the refrigerant flowing out of the heat exchanger 14 outside the vehicle passes through the left inlet and the upper outlet of the four-way reversing valve 2, passes through the second one-way valve 12 and the gas-liquid separator 10, and enters the suction inlet of the electric compressor 1, so that the heating function inside the vehicle is realized.
3. The battery temperature rise control mode of the electric automobile heat pump air conditioning system is as follows:
referring to fig. 4, in a low-temperature environment, when the electric vehicle is cold-started, the second electromagnetic valve 5 and the third electromagnetic valve 18 are closed, the first electromagnetic valve 4, the air deflector 20 and the water pump 15 are opened, the electric compressor 1 discharges a high-temperature and high-pressure refrigerant, the high-temperature and high-pressure refrigerant enters the exterior heat exchanger 14 through the lower inlet and the left outlet of the four-way reversing valve 2, meanwhile, a battery low-temperature coolant in the battery temperature control system enters the exterior heat exchanger 14 through the driving of the water pump 15 to exchange heat with the high-temperature and high-pressure refrigerant in the exterior heat exchanger 14, and the heat exchange efficiency is improved by opening the fan 13; the medium-temperature high-pressure refrigerant flowing out of the heat exchanger 14 outside the vehicle is changed into low-temperature low-pressure refrigerant through the throttling action of the first expansion valve 11, the low-temperature low-pressure refrigerant enters the first heat exchanger 3 inside the vehicle through the first electromagnetic valve 4 to realize heat exchange, and the refrigerant flowing out of the first heat exchanger 3 inside the vehicle enters the suction inlet of the electric compressor 1 through the right inlet and the upper outlet of the four-way reversing valve 2, the second one-way valve 12 and the gas-liquid separator 10 to form refrigerant circulation; the battery medium temperature coolant flowing out of the exterior heat exchanger 14 returns to the water pump 15 through the water jacket of the battery 16 to form a loop, and temperature rise control of the battery is realized.
4. The in-vehicle refrigeration and battery cooling control mode of the electric vehicle heat pump air conditioning system is as follows:
referring to fig. 5, the second electromagnetic valve 5 and the air deflector 20 are closed, the first electromagnetic valve 4, the third electromagnetic valve 18 and the water pump 15 are opened, the electric compressor 1 discharges high-temperature and high-pressure refrigerant, the high-temperature and high-pressure refrigerant enters the first heat exchanger 3 in the vehicle through the lower inlet and the right outlet of the four-way reversing valve 2, the high-temperature and high-pressure refrigerant flowing out of the first heat exchanger 3 enters the second expansion valve 17 through the third electromagnetic valve 18 on one hand, the high-temperature and high-pressure refrigerant is changed into low-temperature and low-pressure refrigerant under the throttling action of the second expansion valve 17, the low-temperature and low-pressure refrigerant enters the second heat exchanger 6 in the vehicle to exchange with air in the vehicle, the air around the second heat exchanger 6 is cooled, and the cold air around the second heat exchanger 6 in the vehicle is blown into the vehicle cabin through the air guide cover 19 by the blower 7, so as to realize refrigeration in the vehicle; refrigerant flowing out of the second heat exchanger 6 in the vehicle enters a suction inlet of the electric compressor 1 through a flow control valve 9 and a gas-liquid separator 10 to form a second refrigeration loop in the vehicle; on the other hand, the high-temperature and high-pressure refrigerant flowing out of the first heat exchanger 3 enters the first expansion valve 11 through the first electromagnetic valve 4, and becomes a low-temperature and low-pressure refrigerant under the throttling action of the first expansion valve 11, the low-temperature and low-pressure refrigerant enters the exterior heat exchanger 14, meanwhile, the high-temperature battery coolant in the battery temperature control system enters the exterior heat exchanger 14 through the driving of the water pump 15 and exchanges heat with the low-temperature and low-pressure refrigerant in the exterior heat exchanger 14, and the heat exchange efficiency is improved by opening the fan 13; the refrigerant flowing out of the exterior heat exchanger 14 passes through the left inlet and the upper outlet of the four-way valve, passes through the second check valve 12 and the gas-liquid separator 10, and enters the suction inlet of the electric compressor 1; the battery low-temperature coolant flowing out of the exterior heat exchanger 14 returns to the water pump 15 through the water jacket of the battery 16 to form a loop, and the temperature reduction control of the battery is realized.
5. The battery temperature self-circulation control mode of the heat pump air conditioner of the electric automobile comprises the following steps:
referring to fig. 6, the battery low-temperature coolant in the battery temperature control system enters the exterior heat exchanger 14 through the driving of the water pump 15, exchanges heat with air in the external environment, and becomes the battery medium-temperature coolant, and the battery medium-temperature coolant returns to the water pump 15 through the water jacket of the battery 16 to form a loop, so that the temperature control of the battery can be realized independently.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.
Claims (6)
1. The utility model provides an electric automobile heat pump air conditioning system which characterized in that: the method comprises the following steps: the system comprises an electric compressor (1), an in-vehicle first heat exchanger (3), an in-vehicle second heat exchanger (6), a flow control valve (9), a gas-liquid separator (10), a first expansion valve (11), an out-vehicle heat exchanger (14), a water pump (15), a battery pack (16) and a second expansion valve (17);
an exhaust outlet of the electric compressor (1) is connected with one end of the heat exchanger (14) outside the vehicle, the other end of the heat exchanger (14) outside the vehicle is connected with one end of the first heat exchanger (3) inside the vehicle through the first expansion valve (11), and the other end of the first heat exchanger (3) inside the vehicle is connected with a suction inlet of the electric compressor (1) through the gas-liquid separator (10) to form a first refrigerating loop or a battery warming loop inside the vehicle;
the exhaust outlet of the electric compressor (1) is connected with the first heat exchanger (3) in the vehicle, the second heat exchanger (6) in the vehicle and the first heat exchanger (3) in the vehicle are connected in series and then divided into a first branch and a second branch, and the first branch comprises: the flow control valve (9) and the gas-liquid separator (10) are connected with a suction inlet of the electric compressor (1) to form a gas-supplementing enthalpy-increasing loop; the second branch includes: one end of the heat exchanger (14) outside the vehicle is connected through the first expansion valve (11), and the other end of the heat exchanger (14) outside the vehicle is connected with a suction inlet of the electric compressor (1) through the gas-liquid separator (10) to form an in-vehicle heating loop;
the exhaust outlet of the electric compressor (1) is connected with the first heat exchanger (3) in the vehicle and then is divided into a third branch and a fourth branch, and the third branch comprises: one end of the second heat exchanger (6) in the vehicle is connected through the second expansion valve (17), and the other end of the second heat exchanger (6) in the vehicle is connected with a suction inlet of the electric compressor (1) through the flow control valve (9) and the gas-liquid separator (10) to form a second refrigeration loop in the vehicle; the fourth branch includes: the other end of the external heat exchanger (14) is connected with a gas suction inlet of the electric compressor (1) through the gas-liquid separator (10) to form a battery cooling loop; the battery pack (16), the water pump (15) and the heat exchanger (14) outside the vehicle are connected in series to form a battery temperature control system.
2. The heat pump air-conditioning system of the electric automobile according to claim 1, characterized in that: the electric compressor (1) is a closed type electric compressor.
3. The heat pump air-conditioning system for the electric automobile according to claim 1, characterized in that: and a four-way reversing valve (2) is arranged at an exhaust outlet of the electric compressor (1).
4. The heat pump air-conditioning system of the electric automobile according to claim 1, characterized in that: the first heat exchanger (3) and the second heat exchanger (6) are arranged side by side, one side of the second heat exchanger (6) is provided with a blower (7), and the first heat exchanger (3) and the blower (7) are respectively arranged on the opposite sides of the second heat exchanger (6).
5. The heat pump air-conditioning system of the electric automobile according to claim 1, characterized in that: the water pump (15) and the battery pack (16) are arranged on the same side of the heat exchanger (14) outside the vehicle, and the fan (13) is arranged on the other side of the heat exchanger (14) outside the vehicle.
6. The heat pump air-conditioning system of the electric automobile according to claim 1, characterized in that: an upper isolating plate (21) and a lower isolating plate (22) in the horizontal direction are arranged between the first heat exchanger (3) in the vehicle and the second heat exchanger (6) in the vehicle, the upper isolating plate (21) is connected with the top ends of the first heat exchanger (3) in the vehicle and the second heat exchanger (6) in the vehicle, the lower isolating plate (22) is connected with the bottom ends of the first heat exchanger (3) in the vehicle and the second heat exchanger (6) in the vehicle, an air deflector (20) in the vertical direction is arranged between the upper isolating plate (21) and the lower isolating plate (22), an air guide opening is formed in the upper isolating plate (21), the air guide opening is formed between the second heat exchanger (6) in the vehicle and the air deflector (20), and an air guide cover (19) is arranged on the air guide opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910582510.7A CN110435384B (en) | 2019-06-29 | 2019-06-29 | Heat pump air-conditioning system of electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910582510.7A CN110435384B (en) | 2019-06-29 | 2019-06-29 | Heat pump air-conditioning system of electric automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110435384A CN110435384A (en) | 2019-11-12 |
| CN110435384B true CN110435384B (en) | 2023-02-24 |
Family
ID=68428790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910582510.7A Expired - Fee Related CN110435384B (en) | 2019-06-29 | 2019-06-29 | Heat pump air-conditioning system of electric automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110435384B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111397238B (en) * | 2020-03-13 | 2021-06-01 | 太原理工大学 | Integrated fuel cell automobile heat management system |
| CN111645487A (en) * | 2020-06-09 | 2020-09-11 | 无锡商业职业技术学院 | Heat pump air conditioner and power battery management system for electric automobile |
| CN113071289B (en) * | 2021-04-28 | 2024-05-10 | 蔚来汽车科技(安徽)有限公司 | Electric automobile cabin heating system and control method thereof |
| CN114056040A (en) * | 2021-11-09 | 2022-02-18 | 上海光裕汽车空调压缩机有限公司 | Air-conditioning heat pump system of electric automobile and temperature control method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001246930A (en) * | 2000-03-06 | 2001-09-11 | Denso Corp | Heat pump device for vehicle |
| CN105758061A (en) * | 2014-12-15 | 2016-07-13 | 比亚迪股份有限公司 | Vehicle and air-conditioning system thereof |
| CN106956565A (en) * | 2017-04-20 | 2017-07-18 | 珠海格力电器股份有限公司 | Air conditioner and have its vehicle |
| CN107160972A (en) * | 2017-06-19 | 2017-09-15 | 珠海格力电器股份有限公司 | Electric automobile, electric automobile heat pump air conditioner assembly and control method thereof |
| JP2018165104A (en) * | 2017-03-28 | 2018-10-25 | 株式会社ヴァレオジャパン | Thermal management system in vehicle cabin |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5821756B2 (en) * | 2011-04-21 | 2015-11-24 | 株式会社デンソー | Refrigeration cycle equipment |
-
2019
- 2019-06-29 CN CN201910582510.7A patent/CN110435384B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001246930A (en) * | 2000-03-06 | 2001-09-11 | Denso Corp | Heat pump device for vehicle |
| CN105758061A (en) * | 2014-12-15 | 2016-07-13 | 比亚迪股份有限公司 | Vehicle and air-conditioning system thereof |
| JP2018165104A (en) * | 2017-03-28 | 2018-10-25 | 株式会社ヴァレオジャパン | Thermal management system in vehicle cabin |
| CN106956565A (en) * | 2017-04-20 | 2017-07-18 | 珠海格力电器股份有限公司 | Air conditioner and have its vehicle |
| CN107160972A (en) * | 2017-06-19 | 2017-09-15 | 珠海格力电器股份有限公司 | Electric automobile, electric automobile heat pump air conditioner assembly and control method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 中压补气技术对电动客车用热泵空调器性能的影响;崔四齐等;《流体机械》;20180830;第46卷(第08期);第71-76页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110435384A (en) | 2019-11-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110435384B (en) | Heat pump air-conditioning system of electric automobile | |
| CN110774863B (en) | Whole vehicle thermal management system of integrated indirect heat pump for electric vehicle | |
| CN209274301U (en) | A kind of heat management system for electric vehicle | |
| CN108705915A (en) | A kind of heat management system for electric vehicle | |
| CN110356195A (en) | A kind of electrombile thermal management system and method | |
| CN109895599B (en) | Electric automobile heat pump air conditioning system and control method thereof | |
| CN108224842B (en) | Air supplementing type heat pump air conditioning system with battery thermal management function for electric automobile | |
| CN207955255U (en) | Electric vehicle based on heat pump techniques and its heat management system | |
| CN211280561U (en) | New energy automobile thermal management system | |
| CN207984502U (en) | Vehicle liquid stream cycling hot for electric vehicle manages system | |
| CN113276631B (en) | Whole car thermal management system and car | |
| CN109059341A (en) | A kind of heat pump automotive air-conditioning system | |
| KR20150026176A (en) | Battery heating device for vehicle | |
| CN114571954B (en) | Whole-vehicle thermal management system of pure electric vehicle and control method | |
| CN214324840U (en) | Low-temperature heat pump air conditioner device of new energy automobile | |
| CN106627039A (en) | Heat pump air conditioning system of electric automobile | |
| CN108317766A (en) | A kind of air-conditioning system and electric bus of electric bus | |
| JPH05344606A (en) | Cooling system of electric automobile | |
| CN114701325A (en) | Pure electric vehicle whole vehicle thermal management system and control method | |
| CN208952460U (en) | A kind of heat pump automotive air-conditioning system | |
| CN105937810A (en) | Automobile air conditioning system with battery thermal management function | |
| CN114312206B (en) | Electric vehicle thermal management system and electric vehicle | |
| CN210149113U (en) | Waste heat recovery type heat pump heat management device for new energy automobile | |
| CN212796460U (en) | Thermal management system of electric vehicle | |
| CN110077194A (en) | A kind of electric car and its heat management system based on heat pump techniques |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20230224 |