CN114211933B - Low-temperature heat pump air conditioning system and working method thereof - Google Patents
Low-temperature heat pump air conditioning system and working method thereof Download PDFInfo
- Publication number
- CN114211933B CN114211933B CN202111595799.XA CN202111595799A CN114211933B CN 114211933 B CN114211933 B CN 114211933B CN 202111595799 A CN202111595799 A CN 202111595799A CN 114211933 B CN114211933 B CN 114211933B
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- valve
- way
- port
- refrigerant
- 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.)
- Active
Links
- 238000004378 air conditioning Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 8
- 239000003507 refrigerant Substances 0.000 claims abstract description 63
- 238000001816 cooling Methods 0.000 claims abstract description 30
- 238000010438 heat treatment Methods 0.000 claims abstract description 20
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 230000001105 regulatory effect Effects 0.000 claims description 44
- 239000000498 cooling water Substances 0.000 claims description 32
- 238000007791 dehumidification Methods 0.000 claims description 14
- 238000005057 refrigeration Methods 0.000 claims description 13
- 238000001704 evaporation Methods 0.000 claims description 3
- 230000008020 evaporation Effects 0.000 claims description 3
- 238000011017 operating method Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 17
- 238000010586 diagram Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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
- B60H1/00485—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
- B60H1/00321—Heat exchangers for air-conditioning devices
- B60H1/00342—Heat exchangers for air-conditioning devices of the liquid-liquid type
-
- 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
- B60H3/00—Other air-treating devices
- B60H3/02—Moistening ; Devices influencing humidity levels, i.e. humidity control
- B60H3/024—Moistening ; Devices influencing humidity levels, i.e. humidity control for only dehumidifying the air
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
- B60L58/26—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
- B60L58/27—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by heating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K2001/003—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units
- B60K2001/005—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units the electric storage means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K2001/008—Arrangement or mounting of electrical propulsion units with means for heating the electrical propulsion units
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Abstract
The invention discloses a low-temperature heat pump air conditioning system and a working method thereof, the heat pump air conditioning system comprises an electric compressor, a heat pump combined module, a front end module assembly, a driving motor, an air conditioning box, a plate heat exchanger and a power battery, the front end module assembly comprises an outdoor heat exchanger and a water cooling cooler, the air conditioning box comprises an indoor heat exchanger and a dehumidifying heat exchanger, the heat pump combined module comprises a four-way reversing valve, a three-way proportional control valve, a gas-liquid separator, an electronic expansion valve and a one-way stop valve, the working method is to switch a refrigerating and heating mode through a four-way annular valve, refrigerant absorbs or releases heat through the indoor heat exchanger and a battery side plate heat exchanger, and perform refrigerating or heating, and the three-way proportional control valve is used for distributing flow of the refrigerant of the indoor heat exchanger and the battery side plate heat exchanger, so as to control refrigerating and heating effects.
Description
Technical Field
The invention relates to an air conditioning system of an electric vehicle, in particular to a low-temperature heat pump air conditioning system.
Background
The current heat pump air conditioning system utilizes reverse Carlo circulation, adopts a plurality of electronic valves and one-way valves to control a refrigerant loop, absorbs heat from an outdoor side heat exchanger and a motor, and releases heat from an indoor side to heat in a vehicle.
The prior art has the following problems: the heat pump cannot work in a low-temperature (-20 ℃ below zero) environment; too many control valves and complicated control logic; the number of connecting pipelines is too many, the arrangement is complex, and the cost is high.
Disclosure of Invention
The invention aims to: the invention aims to provide a low-temperature heat pump air conditioning system and a working method thereof, which solve the problems that the existing heat pump air conditioning system cannot work in a low-temperature environment, and the control valve and the pipeline are complex in arrangement and high in cost.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a low-temperature heat pump air conditioning system comprises an electric compressor, a heat pump combination module, a front end module assembly, a driving motor, an air conditioning box, a plate heat exchanger and a power battery,
the front-end module assembly comprises an outdoor heat exchanger and a water-cooling cooler, wherein the water-cooling cooler comprises a cooling water pipeline and a refrigerant pipeline, and the cooling water pipeline of the water-cooling cooler and the cooling water pipeline of the driving motor form a cooling water circulation loop of the driving motor;
the plate heat exchanger comprises a cooling water pipeline and a refrigerant pipeline, and the cooling water pipeline of the plate heat exchanger and the cooling water pipeline of the power battery form a cooling water circulation loop of the power battery;
the air conditioner comprises an indoor heat exchanger and a dehumidifying heat exchanger;
the heat pump combination module comprises a gas-liquid separator, an electronic expansion valve, a four-way reversing valve, a three-way proportional regulating valve a, a three-way proportional regulating valve b and a one-way stop valve, wherein a refrigerant outlet of the electric compressor is connected with a first port of the four-way reversing valve, a second port of the four-way reversing valve is respectively connected with one port of an outdoor heat exchanger, one end of a refrigerant pipeline of a water-cooling cooler and one port of a dehumidifying heat exchanger, the other port of the outdoor heat exchanger is connected with a first port of the three-way proportional regulating valve a, the other end of the refrigerant pipeline of the water-cooling cooler is connected with a second port of the three-way proportional regulating valve a, a third port of the three-way proportional regulating valve a is respectively connected with an inlet end of the one-way stop valve and one port of the electronic expansion valve, an outlet end of the one-way stop valve is connected with the other port of the dehumidifying heat exchanger, the other port of the electronic expansion valve is respectively connected with one port of the indoor heat exchanger, the other port of the plate heat exchanger is connected with the first port of the three-way proportional regulating valve b, the other port of the plate heat exchanger is connected with the second port of the three-way proportional regulating valve b, and the third port of the three-way proportional regulating valve b is connected with the four-way valve.
Further, the front end module assembly further comprises an electronic fan for supplying air to the outdoor heat exchanger; the air conditioning box also comprises a blower which is used for sending the air passing through the dehumidifying heat exchanger and the indoor heat exchanger into the vehicle.
Further, the electronic expansion valve, the four-way reversing valve, the three-way proportional control valve a, the three-way proportional control valve b and the one-way stop valve are all arranged on the shell of the gas-liquid separator.
The working method of the low-temperature heat pump air conditioning system comprises the following steps:
when refrigeration is needed, the refrigerant discharged by the electric compressor flows through the outdoor heat exchanger through the four-way reversing valve, then flows through the indoor heat exchanger and the plate heat exchanger through the three-way proportional control valve a and the electronic expansion valve, and then flows into the electric compressor through the three-way proportional control valve b, the four-way reversing valve and the gas-liquid separator, the refrigerant condenses and dissipates heat in the outdoor heat exchanger, evaporates and absorbs heat in the indoor heat exchanger and the plate heat exchanger, and respectively realizes the refrigeration in the vehicle and the battery refrigeration, and the proportion of the refrigerant flowing through the indoor heat exchanger and the plate heat exchanger is regulated through the three-way proportional control valve b according to the actual refrigeration demands of the vehicle and the power battery;
when heating is needed, the refrigerant discharged by the electric compressor flows through the indoor heat exchanger and the plate heat exchanger respectively through the four-way reversing valve, then flows through the electronic expansion valve and the three-way proportional regulating valve a and then flows through the water-cooling cooler and the outdoor heat exchanger respectively, then flows into the electric compressor through the four-way reversing valve and the gas-liquid separator, the refrigerant condenses and dissipates heat in the indoor heat exchanger and the plate heat exchanger to respectively realize heating in the vehicle and heating of the battery, the proportion of the refrigerant flowing through the indoor heat exchanger and the plate heat exchanger is regulated through the three-way proportional regulating valve b according to the actual heating requirements of the vehicle and the power battery, the refrigerant absorbs heat in the outdoor heat exchanger and the water-cooling cooler through evaporation, the proportion of the refrigerant flowing through the outdoor heat exchanger and the water-cooling cooler is regulated through the three-way proportional regulating valve b according to the ambient temperature, and when the ambient temperature reaches below-20 ℃, the refrigerant is enabled to flow through the water-cooling cooler entirely.
Further, in the heating process, if dehumidification is required in the vehicle, the one-way stop valve is opened, so that the refrigerant is split before entering the three-way proportional control valve a, a part of the refrigerant flows through the dehumidification heat exchanger and then flows into the electric compressor through the four-way reversing valve, and the refrigerant evaporates and absorbs heat in the dehumidification heat exchanger, so that the dehumidification in the vehicle is realized.
The beneficial effects are that: according to the low-temperature heat pump air conditioning system, a four-way annular valve is used for switching a refrigerating mode, during the refrigerating mode, a refrigerant dissipates heat through an outdoor heat exchanger, absorbs heat through an indoor heat exchanger and a battery side plate heat exchanger, performs refrigerating, and performs flow distribution on the refrigerant of the indoor heat exchanger and the battery side plate heat exchanger through a proportional control valve; compared with the existing heat pump system, the heat pump air conditioning system can work in a low-temperature environment of-20 ℃, has fewer control valves, simple control logic, simple pipeline arrangement and low cost.
Drawings
Fig. 1 is a schematic diagram of the refrigeration of the low temperature heat pump air conditioning system of the present invention.
Fig. 2 is a schematic diagram of the heating of the low temperature heat pump air conditioning system of the present invention.
Fig. 3 is a schematic diagram of a low temperature heat pump air conditioning system according to the present invention.
In the figure: 1-an electric compressor; 2-a heat pump combination module; 3-four-way reversing valve; 4-front end module assembly; 5-an outdoor heat exchanger; 6-electronic fan; 7-a three-way proportional control valve a; 8-an electronic expansion valve; 9-an air conditioning box; 10-an indoor heat exchanger; 11-a blower; 12-plate heat exchanger; 13-an electronic water pump b; 14-a power cell; 15-an electronic three-way valve b; 16-a gas-liquid separator; 17-a water-cooled cooler; 18-an electronic water pump a; 19-a drive motor; 20-a one-way stop valve; 21-dehumidifying heat exchanger.
The specific embodiment is as follows:
the invention is further explained below with reference to the drawings.
As shown in fig. 1, the low-temperature heat pump air conditioning system of the invention comprises an electric compressor 1, a heat pump combination module 2, a front end module assembly 4, a driving motor 19, an air conditioning box 9, a plate heat exchanger 12 and a power battery 14.
The front end module assembly 4 comprises an outdoor heat exchanger 5 and a water-cooling cooler 17, wherein the water-cooling cooler 17 comprises a cooling water pipeline and a refrigerant pipeline, the cooling water pipeline of the water-cooling cooler 17 and the cooling water pipeline of a driving motor 19 form a driving motor cooling water circulation loop through an electronic water pump a, and the cooling water is driven to circulate through the water-cooling cooler 17 and the driving motor 19 through the electronic water pump a. The front end module assembly 4 further comprises an electronic fan 6 for supplying air to the outdoor heat exchanger 5.
The plate heat exchanger 12 comprises a cooling water pipeline and a refrigerant pipeline, the cooling water pipeline of the plate heat exchanger 12 and the cooling water pipeline of the power battery 14 form a power battery cooling water circulation loop through an electronic water pump b, and the cooling water is driven to circulate through the plate heat exchanger 12 and the power battery 14 through the electronic water pump b.
The air conditioning case 9 includes an indoor heat exchanger 10 and a dehumidifying heat exchanger 21, and the air conditioning case 9 further includes a blower 11 for sending air passing through the dehumidifying heat exchanger 21 and the indoor heat exchanger 10 into the vehicle.
The heat pump combination module 2 comprises a gas-liquid separator 16, an electronic expansion valve 8, a four-way reversing valve 3, a three-way proportional regulating valve a7, a three-way proportional regulating valve b15 and a one-way stop valve 20, wherein a refrigerant outlet of the electric compressor 1 is connected with a first port of the four-way reversing valve 3, a second port of the four-way reversing valve 3 is respectively connected with one port of the outdoor heat exchanger 5, one end of a refrigerant pipeline of the water-cooling cooler 17 and one port of the dehumidifying heat exchanger 21, the other port of the outdoor heat exchanger 5 is connected with a first port of the three-way proportional regulating valve a7, the other end of the refrigerant pipeline of the water-cooling cooler 17 is connected with a second port of the three-way proportional regulating valve a7, a third port of the three-way proportional regulating valve a7 is respectively connected with an inlet end of the one-way stop valve 20 and one port of the electronic expansion valve 8, an outlet of the one-way stop valve 20 is connected with the other port of the dehumidifying heat exchanger 21, the other port of the electronic expansion valve 8 is respectively connected with one port of the indoor heat exchanger 10 and one end of a refrigerant pipeline of the plate heat exchanger 12, the other port of the indoor heat exchanger 10 is connected with the first port of the three-way proportional regulating valve b15, the other port of the plate heat exchanger 12 is connected with the three-way valve 15, the other port of the three-way heat exchanger is connected with the three-way valve 3 and the three-way valve 2 is connected with the three-way valve 3.
In order to simplify the connecting pipeline of the heat pump combination module 2 and facilitate installation, the electronic expansion valve 8, the four-way reversing valve 3, the three-way proportional control valve a7, the three-way proportional control valve b15 and the one-way stop valve 20 are arranged on the shell of the gas-liquid separator 16. The electronic expansion valve 8, the four-way reversing valve 3, the three-way proportional control valve a7, the three-way proportional control valve b15, the one-way stop valve 20 and the shell of the gas-liquid separator 16 are all detachably connected.
The working method of the low-temperature heat pump air conditioning system comprises the following steps:
when refrigeration is needed, the electric compressor 1 is started, the refrigerant discharged by the electric compressor 1 flows through the outdoor heat exchanger 5 through the first port and the second port of the four-way reversing valve 3, flows through the indoor heat exchanger 10 and the plate heat exchanger 12 respectively after passing through the three-way proportional control valve a7 and the electronic expansion valve 8, and flows into the electric compressor 3 through the three-way proportional control valve b15, the third port and the fourth port of the four-way reversing valve 3 and the gas-liquid separator 16. The electronic fan 6 supplies air to the outdoor heat exchanger 5, the refrigerant condenses and dissipates heat in the outdoor heat exchanger 5, the refrigerant is in a low-temperature and low-pressure state after being throttled and expanded by the electronic expansion valve 8, the refrigerant absorbs heat in the indoor heat exchanger 10 and the plate heat exchanger 12 by evaporation, air in the air conditioning box 9 becomes cold air after passing through the indoor heat exchanger 10, the cold air is sent into the vehicle through the blower 11, the refrigeration in the vehicle is realized, cooling water in the power battery cooling water circulation loop becomes cold water after passing through the plate heat exchanger 12, and the cold water is sent to the power battery 14 through the electronic water pump b13, so that the battery refrigeration is realized. The proportion of the refrigerant flowing through the indoor heat exchanger 10 and the plate heat exchanger 12 is regulated by the three-way proportion regulating valve b15 according to the actual refrigeration demands of the vehicle interior and the power battery.
When heating is needed, the conduction state of the port of the four-way reversing valve 3 is switched, and the refrigerant discharged by the electric compressor 1 flows through the indoor heat exchanger 10 and the plate heat exchanger 12 respectively after passing through the first port, the second port and the three-way proportional control valve b15 of the four-way reversing valve 3, flows through the water cooling cooler 17 and the outdoor heat exchanger 5 respectively after passing through the electronic expansion valve 8 and the three-way proportional control valve a7, and flows into the electric compressor 1 through the second port, the fourth port and the gas-liquid separator 16 of the four-way reversing valve 3. The refrigerant condenses and dissipates heat in the indoor heat exchanger 10 and the plate heat exchanger 12, air in the air conditioning box 9 is changed into hot air after passing through the indoor heat exchanger 10, the hot air is sent into the vehicle through the blower 11, heating in the vehicle is achieved, cooling water of the cooling water circulation loop of the driving motor is changed into hot water after passing through the plate heat exchanger 12, and the hot water is sent to the power battery 14 through the electronic water pump of the blower 11, so that heating of the battery is achieved. The proportion of the refrigerant flowing through the indoor heat exchanger 10 and the plate heat exchanger 12 is regulated by the three-way proportion regulating valve b15 according to the actual heating requirements of the power battery and the vehicle. The low-temperature high-pressure liquid refrigerant flowing out of the indoor heat exchanger 10 and the plate heat exchanger 12 is combined and flows into the electronic expansion valve 8 to be throttled and expanded, the proportion of the refrigerant flowing into the outdoor heat exchanger 5 and the water-cooling condenser 17 is regulated through the three-way proportion regulating valve a7, the refrigerant is blown into the outdoor heat exchanger 5 through the electronic fan 6, the refrigerant evaporates and absorbs heat in the outdoor heat exchanger 5, cooling water of a cooling water circulation loop of the driving motor is changed into hot water after passing through the power battery 14, the hot water is sent into the water-cooling cooler 17 through the electronic water pump a, the refrigerant evaporates and absorbs heat in the water-cooling cooler 17, the proportion of the refrigerant flowing through the outdoor heat exchanger 5 and the water-cooling cooler 17 is regulated through the three-way proportion regulating valve a7 according to the ambient temperature, and when the ambient temperature is lower than-20 ℃, the electronic fan 6 is closed at the same time, and the refrigerant is completely flowing through the water-cooling cooler 17.
In the heating process, if dehumidification is required in the vehicle, the one-way stop valve 20 is opened, so that the refrigerant is split before entering the three-way proportional control valve a7, a part of the refrigerant flows through the dehumidification heat exchanger 21 and flows into the electric compressor 1 through the four-way reversing valve 3, the refrigerant evaporates and absorbs heat in the dehumidification heat exchanger 21, the air in the vehicle sequentially flows through the dehumidification heat exchanger 21 and the indoor heat exchanger 10, the humidity is reduced after being changed into cold air through the dehumidification heat exchanger 21, and the air is changed into hot air after being changed into hot air through the indoor heat exchanger 10, and then the heating and the dehumidification in the vehicle are realized.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (4)
1. A low temperature heat pump air conditioning system, characterized by: comprises an electric compressor, a heat pump combined module, a front end module assembly, a driving motor, an air conditioning box, a plate heat exchanger and a power battery,
the front-end module assembly comprises an outdoor heat exchanger and a water-cooling cooler, wherein the water-cooling cooler comprises a cooling water pipeline and a refrigerant pipeline, and the cooling water pipeline of the water-cooling cooler and the cooling water pipeline of the driving motor form a cooling water circulation loop of the driving motor;
the plate heat exchanger comprises a cooling water pipeline and a refrigerant pipeline, and the cooling water pipeline of the plate heat exchanger and the cooling water pipeline of the power battery form a cooling water circulation loop of the power battery;
the air conditioner comprises an indoor heat exchanger and a dehumidifying heat exchanger;
the heat pump combination module comprises a gas-liquid separator, an electronic expansion valve, a four-way reversing valve, a three-way proportional regulating valve a, a three-way proportional regulating valve b and a one-way stop valve, wherein a refrigerant outlet of the electric compressor is connected with a first port of the four-way reversing valve, a second port of the four-way reversing valve is respectively connected with one port of an outdoor heat exchanger, one end of a refrigerant pipeline of a water-cooling cooler and one port of a dehumidifying heat exchanger, the other port of the outdoor heat exchanger is connected with a first port of the three-way proportional regulating valve a, the other end of the refrigerant pipeline of the water-cooling cooler is connected with a second port of the three-way proportional regulating valve a, a third port of the three-way proportional regulating valve a is respectively connected with an inlet end of the one-way stop valve and one port of the electronic expansion valve, an outlet end of the one-way stop valve is connected with the other port of the dehumidifying heat exchanger, the other port of the electronic expansion valve is respectively connected with one port of the indoor heat exchanger, the other port of the plate heat exchanger is connected with the first port of the three-way proportional regulating valve b, the other port of the plate heat exchanger is connected with the second port of the three-way proportional regulating valve b, and the third port of the three-way proportional regulating valve b is connected with the four-way valve is connected with the four-way compressor;
the front end module assembly also comprises an electronic fan which is used for supplying air to the outdoor heat exchanger; the air conditioning box also comprises a blower which is used for sending the air passing through the dehumidifying heat exchanger and the indoor heat exchanger into the vehicle.
2. A low temperature heat pump air conditioning system according to claim 1, characterized in that: the electronic expansion valve, the four-way reversing valve, the three-way proportional control valve a, the three-way proportional control valve b and the one-way stop valve are all arranged on the shell of the gas-liquid separator.
3. The operating method of a low temperature heat pump air conditioning system according to claim 1 or 2, characterized in that:
when refrigeration is needed, the refrigerant discharged by the electric compressor flows through the outdoor heat exchanger through the four-way reversing valve, then flows through the indoor heat exchanger and the plate heat exchanger respectively after passing through the three-way proportional control valve a and the electronic expansion valve, then flows into the electric compressor through the three-way proportional control valve b, the four-way reversing valve and the gas-liquid separator, the refrigerant condenses and dissipates heat in the outdoor heat exchanger, the refrigerant evaporates and absorbs heat in the indoor heat exchanger and the plate heat exchanger, the refrigeration in the vehicle and the battery refrigeration are respectively realized, and the proportion of the refrigerant flowing through the indoor heat exchanger and the plate heat exchanger is regulated through the three-way proportional control valve b according to the actual refrigeration demands of the vehicle and the power battery;
when heating is needed, the refrigerant discharged by the electric compressor flows through the four-way reversing valve and the three-way proportional regulating valve b and then flows through the indoor heat exchanger and the plate heat exchanger respectively, then flows through the electronic expansion valve and the three-way proportional regulating valve a and then flows through the water-cooling cooler and the outdoor heat exchanger respectively, then flows into the electric compressor through the four-way reversing valve and the gas-liquid separator, the refrigerant condenses and dissipates heat in the indoor heat exchanger and the plate heat exchanger to respectively realize heating in the vehicle and battery heating, according to the actual heating requirements of the vehicle and the power battery, the proportion of the refrigerant flowing through the indoor heat exchanger and the plate heat exchanger is regulated through the three-way proportional regulating valve b, the refrigerant absorbs heat through evaporation in the outdoor heat exchanger and the water-cooling cooler, and according to the ambient temperature, the proportion of the refrigerant flowing through the outdoor heat exchanger and the water-cooling cooler is regulated through the three-way proportional regulating valve a, and when the ambient temperature reaches below-20 ℃.
4. A method of operating a low temperature heat pump air conditioning system according to claim 3, wherein: in the heating process, if dehumidification is required in the vehicle, the one-way stop valve is opened, so that the refrigerant is split before entering the three-way proportional regulating valve a, part of the refrigerant flows through the dehumidification heat exchanger and then flows into the electric compressor through the four-way reversing valve, and the refrigerant evaporates and absorbs heat in the dehumidification heat exchanger, so that the dehumidification in the vehicle is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111595799.XA CN114211933B (en) | 2021-12-24 | 2021-12-24 | Low-temperature heat pump air conditioning system and working method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111595799.XA CN114211933B (en) | 2021-12-24 | 2021-12-24 | Low-temperature heat pump air conditioning system and working method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114211933A CN114211933A (en) | 2022-03-22 |
| CN114211933B true CN114211933B (en) | 2023-11-10 |
Family
ID=80705553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111595799.XA Active CN114211933B (en) | 2021-12-24 | 2021-12-24 | Low-temperature heat pump air conditioning system and working method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114211933B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106274372A (en) * | 2016-11-14 | 2017-01-04 | 吉林大学 | There is the heat-pump-type air conditioning for automobiles of battery thermal management function |
| CN111452592A (en) * | 2020-04-21 | 2020-07-28 | 一汽奔腾轿车有限公司 | Electric vehicle motor waste heat utilization system and control method thereof |
| CN112319181A (en) * | 2020-12-01 | 2021-02-05 | 南京协众汽车空调集团有限公司 | Integrated thermal management system for whole new energy automobile and working method of integrated thermal management system |
| CN112339527A (en) * | 2020-12-01 | 2021-02-09 | 南京协众汽车空调集团有限公司 | New energy automobile thermal management system and working method thereof |
| CN113085487A (en) * | 2021-05-18 | 2021-07-09 | 吉林大学 | Heat pump automobile air conditioning system |
| CN113246686A (en) * | 2021-05-30 | 2021-08-13 | 重庆长安汽车股份有限公司 | Integrated thermal management system of pure electric vehicle and pure electric vehicle |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5396246B2 (en) * | 2009-11-18 | 2014-01-22 | 株式会社日立製作所 | Air conditioner for vehicles |
-
2021
- 2021-12-24 CN CN202111595799.XA patent/CN114211933B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106274372A (en) * | 2016-11-14 | 2017-01-04 | 吉林大学 | There is the heat-pump-type air conditioning for automobiles of battery thermal management function |
| CN111452592A (en) * | 2020-04-21 | 2020-07-28 | 一汽奔腾轿车有限公司 | Electric vehicle motor waste heat utilization system and control method thereof |
| CN112319181A (en) * | 2020-12-01 | 2021-02-05 | 南京协众汽车空调集团有限公司 | Integrated thermal management system for whole new energy automobile and working method of integrated thermal management system |
| CN112339527A (en) * | 2020-12-01 | 2021-02-09 | 南京协众汽车空调集团有限公司 | New energy automobile thermal management system and working method thereof |
| CN113085487A (en) * | 2021-05-18 | 2021-07-09 | 吉林大学 | Heat pump automobile air conditioning system |
| CN113246686A (en) * | 2021-05-30 | 2021-08-13 | 重庆长安汽车股份有限公司 | Integrated thermal management system of pure electric vehicle and pure electric vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114211933A (en) | 2022-03-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110525169B (en) | Integrated passenger cabin heat pump air conditioner and three-electric heating management system for pure electric vehicle | |
| CN110525168B (en) | New energy automobile secondary circuit passenger cabin and battery motor electric control heat management system | |
| US10619892B2 (en) | Air conditioning system | |
| CN203489519U (en) | Automobile refrigerating system | |
| CN110466309B (en) | Cooling and heating system for vehicle | |
| CN104515323A (en) | Heat pump system for vehicle | |
| EP2541169A1 (en) | Air conditioner and air-conditioning hot-water-supplying system | |
| CN113173050B (en) | Thermal management system | |
| JP2006292313A (en) | Geothermal unit | |
| US6094926A (en) | Electricity storage type air conditioning apparatus and cooling/heating source device therefor | |
| KR20180076397A (en) | Automotive air conditioning system | |
| US11358438B2 (en) | Automotive air conditioning system | |
| CN108128116B (en) | Automobile heat recovery air conditioning system | |
| EP2541170A1 (en) | Air-conditioning hot-water-supply system | |
| CN104266417A (en) | Refrigeration operating method of multi-split air conditioner in high temperature environment | |
| US9920973B2 (en) | Air conditioner exhaust recycling | |
| CN114211933B (en) | Low-temperature heat pump air conditioning system and working method thereof | |
| KR102061757B1 (en) | Module type hybrid outdoor unit for air conditioning apparatus | |
| CN105627625A (en) | Hybrid heating process of heat pump and hot water heating combined system | |
| KR20180080376A (en) | Heat Pump For a Vehicle | |
| CN110864387A (en) | Air conditioning unit | |
| US20230356564A1 (en) | Thermal management system with improved working efficiency of compressor | |
| CN113173049B (en) | Thermal management system | |
| CN115682293A (en) | Air conditioner control system | |
| CN114198872B (en) | Machine room air conditioner, operation control method and device of machine room air conditioner |
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 | ||
| CB02 | Change of applicant information |
Address after: No.389, Kening Road, Science Park, Jiangning District, Nanjing City, Jiangsu Province, 211100 Applicant after: Xiezhong International Thermal Management System (Jiangsu) Co.,Ltd. Address before: No.389, Kening Road, Science Park, Jiangning District, Nanjing City, Jiangsu Province, 211100 Applicant before: NANJING XIEZHONG AUTO-AIRCONDITIONER (COMPANY) Co.,Ltd. |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |