CN115476650A - Economical heat pump air conditioner heat management system for new energy automobile and working method thereof - Google Patents
Economical heat pump air conditioner heat management system for new energy automobile and working method thereof Download PDFInfo
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- CN115476650A CN115476650A CN202211221002.4A CN202211221002A CN115476650A CN 115476650 A CN115476650 A CN 115476650A CN 202211221002 A CN202211221002 A CN 202211221002A CN 115476650 A CN115476650 A CN 115476650A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00357—Air-conditioning arrangements specially adapted for particular vehicles
- B60H1/00385—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
- B60H1/00278—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit for the battery
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/02—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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
- B60H1/3227—Cooling devices using compression characterised by the arrangement or the type of heat exchanger, e.g. condenser, evaporator
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- Air-Conditioning For Vehicles (AREA)
Abstract
The invention discloses an economical heat pump air-conditioning heat management system for a new energy automobile and a working method thereof, wherein the system comprises a refrigerant pipeline for circulating a refrigerant and a cooling water pipeline for performing heat management on a battery and a motor in an electric control mode, the refrigerant pipeline comprises an electric compressor, an HVAC assembly, a Chiller heat exchanger, a front-end heat exchange module, the HVAC assembly comprises an evaporator and an indoor condenser, the front-end heat exchange module comprises an outdoor heat exchanger, and the cooling water pipeline comprises a first water pump, a battery, a four-way water valve, a second water pump, a motor in an electric control mode and a three-way water valve.
Description
Technical Field
The invention relates to a new energy automobile, in particular to an economical heat pump air conditioning heat management system for the new energy automobile and a working method thereof.
Background
At present, the heating and battery heating of new energy electric automobile mainly adopt the electric heating scheme, and electric heating efficiency is low, and electric automobile continuation of the journey mileage reduces greatly, and some middle and high-end motorcycle types have also been disposed heat pump system, but system design framework is complicated, with high costs, are unfavorable for heat pump system's popularization.
How to economically and effectively meet the thermal management requirement of the whole automobile, save the power consumption of the battery and improve the endurance mileage of the whole automobile is the key point of the current thermal management research of the electric automobile.
Disclosure of Invention
The invention aims to: the invention aims to provide an economical heat pump air conditioning heat management system for a new energy automobile and a working method thereof, which can fully utilize waste heat and locked rotor heating of electric control of a motor, can carry out heat management on a passenger compartment, the electric control of the motor and a battery at the same time, effectively save the energy consumption of the battery and improve the endurance mileage of the whole automobile.
In order to achieve the purpose, the invention adopts the following technical scheme:
an economical heat pump air conditioning heat management system for a new energy automobile comprises a refrigerant pipeline for circulating a refrigerant, and a cooling water pipeline for performing heat management on electric control of a battery and a motor; the refrigerant pipeline comprises an electric compressor, an HVAC assembly, a Chiller heat exchanger and a front-end heat exchange module, the HVAC assembly comprises an evaporator and an indoor condenser, the front-end heat exchange module comprises an outdoor heat exchanger, an outlet of the electric compressor is connected with the indoor condenser, the indoor condenser is respectively connected with a first electromagnetic valve and a second electromagnetic valve, the first electromagnetic valve is respectively connected with the Chiller heat exchanger, the evaporator and an outlet of a one-way valve, the second electromagnetic valve is connected with the outdoor heat exchanger, an inlet of the external heat exchanger and an inlet of the one-way valve are connected with a third electromagnetic valve, and the Chiller heat exchanger, the evaporator and the third electromagnetic valve are connected with an inlet of the electric compressor;
the cooling water pipeline comprises a first water pump, a battery, a four-way water valve, a second water pump, a motor electric control unit and a three-way water valve, wherein an inlet of the first water pump is connected with the Chiller heat exchanger, an outlet of the first water pump is connected with the battery, the battery is connected with a first pipe orifice of the four-way water valve, a second pipe orifice of the four-way water valve is connected with the Chiller heat exchanger, a third pipe orifice of the four-way water valve is connected with a first pipe orifice of the three-way water valve, a fourth pipe orifice of the four-way water valve is connected with an inlet of the second water pump, an outlet of the second water pump is connected with the motor electric control unit, the motor electric control unit is respectively connected with the outer heat exchanger and a second pipe orifice of the three-way water valve, and the third pipe orifice of the three-way water valve is connected with the outer heat exchanger.
Furthermore, the refrigerant pipeline further comprises a first electronic expansion valve, a second electronic expansion valve and a third electronic expansion valve, wherein the first electronic expansion valve is arranged between the first electromagnetic valve and the Chiller heat exchanger, the second electronic expansion valve is arranged between the first electromagnetic valve and the evaporator, and the third electronic expansion valve and the second electromagnetic valve are arranged between the indoor condenser and the outdoor heat exchanger in parallel.
Furthermore, the refrigerant pipeline also comprises a gas-liquid separator, and the gas-liquid separator is arranged among the Chiller heat exchanger, the evaporator, the electromagnetic valve III and the electric compressor.
Further, the front heat exchange module further comprises an electric fan for directing outdoor air flow to the outdoor heat exchanger.
The working method of the economical heat pump air conditioner heat management system for the new energy automobile comprises the following steps:
in a passenger compartment refrigeration mode, a refrigeration cycle consists of an electric compressor, an indoor condenser, a second electromagnetic valve, an outdoor heat exchanger, a one-way valve, a second electronic expansion valve, an evaporator and a vapor-liquid separator, in the refrigeration cycle, a high-temperature high-pressure refrigerant transfers heat to outdoor air through the outdoor heat exchanger, a low-temperature low-pressure refrigerant cools circulating air in a vehicle room passing through an HVAC assembly through the evaporator, and cold air is sent out through a blowing surface air inlet of the HVAC assembly to achieve the purpose of refrigerating the vehicle room;
in a battery cooling mode, when the ambient temperature is lower than 30 ℃, a water path circulation is formed by a water pump I, a battery, a four-way water valve first orifice and a fourth orifice, a water pump II, a motor electric control unit, an outdoor heat exchanger, a three-way water valve first orifice and a third orifice, a four-way water valve second orifice and a Chiller heat exchanger, the heat of the battery is transferred to outdoor air through the outdoor heat exchanger through the water path circulation, when the ambient temperature is equal to or higher than 30 ℃, the battery needs forced cooling, the water path circulation is formed by the water pump I, the battery, the four-way valve first orifice and the second orifice and the Chiller heat exchanger, the electric compressor, an indoor condenser, a solenoid valve II, the outdoor heat exchanger, a one-way valve, an electronic expansion valve I, the Chiller heat exchanger and a vapor-liquid separator, the heat of the battery is transferred to a refrigerant through the Chiller heat exchanger through the water path circulation, and the heat is transferred to the outdoor air through the outdoor heat exchanger;
in a passenger compartment and battery simultaneous refrigeration mode, a refrigeration cycle is composed of an electric compressor, an indoor condenser, a solenoid valve II, an outdoor heat exchanger, a one-way valve, an electronic expansion valve II, an electronic expansion valve I, an evaporator, a Chiller heat exchanger and a vapor-liquid separator, a waterway cycle is composed of a water pump I, a battery, a first pipe orifice and a second pipe orifice of a four-way valve and a Chiller heat exchanger, high-temperature and high-pressure refrigerant transfers heat to outdoor air through the outdoor heat exchanger, low-temperature and low-pressure refrigerant simultaneously passes through the evaporator and the Chiller heat exchanger to cool circulating air in a vehicle room passing through an HVAC assembly, simultaneously heat of the battery is transferred to the refrigerant through the Chiller heat exchanger through the waterway cycle, and then the heat is discharged to the atmosphere through the outdoor heat exchanger, so that the purpose of simultaneously cooling the vehicle room and the battery is achieved;
in a passenger compartment heat pump heating mode, a heating cycle is formed by an electric compressor, an indoor condenser, a third electronic expansion valve, an outdoor heat exchanger, a third electromagnetic valve and a vapor-liquid separator, high-temperature and high-pressure refrigerant heats vehicle room air flowing through an HVAC assembly through the indoor condenser to achieve the heating purpose, and the refrigerant obtains heat from a low-temperature environment of-10 ℃ to 25 ℃ outdoors through the outdoor heat exchanger;
in a waste heat recovery heating mode, a heating cycle is composed of an electric compressor, an indoor condenser, a first electronic expansion valve, a third outdoor heat exchanger, a third electromagnetic valve and a vapor-liquid separator, another heating cycle is composed of the electric compressor, the indoor condenser, the first electromagnetic valve, the first electronic expansion valve, a Chiller heat exchanger and the vapor-liquid separator, a waterway cycle is composed of a first water pump, a battery, a first and a fourth pipe orifices of a four-way water valve, a second water pump, a motor point control, a first and a second pipe orifices of a three-way water valve, a second and a third pipe orifices of the four-way water valve and the Chiller heat exchanger, a high-temperature and high-pressure refrigerant heats indoor air flowing through an HVAC assembly through the inner condenser), the heating purpose is achieved, the refrigerant absorbs heat from a low-temperature environment of-10-25 ℃ outdoors through the outdoor heat exchanger, and meanwhile, the battery and the electric control heat of the motor are transmitted to the refrigerant through the Chiller heat exchanger through the waterway cycle;
in a battery heating mode, a water path circulation is formed by a water pump I, a battery, a four-way water valve first pipe orifice, a four-way water valve fourth pipe orifice, a water pump II, a motor electric control, a three-way water valve first pipe orifice, a three-way water valve second pipe orifice, a four-way water valve second pipe orifice, a Chiller heat exchanger, and heat generated by the motor electric control is directly transferred to the battery;
the demisting mode is divided into a refrigerating demisting mode and a refrigerating reheating demisting mode, when the ambient temperature is equal to or higher than 15 ℃, the refrigerating demisting mode is required when the vehicle room is fogged, when the ambient temperature is lower than 15 ℃, the refrigerating reheating demisting mode is required when the vehicle room is fogged, under the refrigerating demisting mode, a refrigerating cycle is formed by an electric compressor, an indoor condenser, a second electromagnetic valve, an outdoor heat exchanger, a one-way valve, a second electronic expansion valve, an evaporator and a vapor-liquid separator, in the refrigerating cycle, a high-temperature high-pressure refrigerant transfers heat to outdoor air through the outdoor heat exchanger, a low-temperature low-pressure refrigerant cools circulating air quantity in the vehicle room passing through an HVAC assembly through the evaporator, cold air is sent out through a demisting air supply opening of the HVAC assembly to remove water mist on a vehicle window, under the refrigerating reheating demisting mode, a refrigerating cycle is formed by the electric compressor, the indoor condenser, the first electromagnetic valve, the second electronic expansion valve, the evaporator and the vapor-liquid separator, indoor air passing through the HVAC assembly is cooled by the evaporator, and then heated dry hot air is introduced into the vehicle to remove the water mist on the vehicle window;
in the defrosting protection mode, a refrigeration cycle is composed of an electric compressor, an indoor condenser, a solenoid valve II, an outdoor heat exchanger, a one-way valve, an electronic expansion valve I, a Chiller heat exchanger and a gas-liquid separator, a water path cycle is composed of a water pump I, a battery, a four-way water valve first pipe orifice, a four-way water valve fourth pipe orifice, a water pump II, a motor electric control device, a three-way water valve first pipe orifice, a three-way water valve second pipe orifice, a four-way water valve second pipe orifice, a three-way water valve third pipe orifice and the Chiller heat exchanger, when a high-temperature and high-pressure refrigerant flows through the outdoor heat exchanger, frost of the external heat exchanger is melted, and meanwhile, heat electrically controlled by the battery and the motor is transferred to the refrigerant through the Chiller heat exchanger through the water path cycle.
Has the advantages that:
1. the invention can utilize the electric control waste heat and locked rotor heating of the motor to provide auxiliary heat under certain working conditions, and a WPTC (water heater) or APTC (air heater) is eliminated, so that the system is simplified, and the system cost is reduced;
2. the front-end module adopts a new structural design, the original condenser and the low-temperature radiator are integrally designed, the mutual heat transfer of the two heat exchangers is increased under the low-temperature working condition, the waste heat utilization efficiency is improved, and the installation space is saved;
3. besides the front-end module, the heat of the motor can heat the refrigerant through the giller heat exchanger under the condition of maintaining the constant temperature of the battery, so that the operating efficiency of the heat pump of the refrigerating system is improved. The heating capacity of the vehicle chamber is increased;
4. compared with the common heat pump heat management system architecture design in the current market, the invention can greatly reduce the cost, and the cost can be reduced by about 30% in prediction.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
In the figure: 1-an electric compressor; 2-an HVAC assembly; 2-1-an evaporator; 2-2-indoor condenser; 3-electronic expansion valve one; 4, an electronic expansion valve II; 5-a Chiller heat exchanger; 6-a vapor-liquid separator; 7-a first electromagnetic valve; 8-electronic expansion valve III; 9-electromagnetic valve II; 10-front end heat exchange module; 10-1-outdoor heat exchanger; 10-2-electronic fan; 11, a first water pump; 12-a battery; 13-a four-way water valve; 14-a second water pump; 15-electric control of the motor; 16-a three-way water valve; 17-a one-way valve; and 18-solenoid valve three.
The specific implementation mode is as follows:
the invention is further explained below with reference to the drawings.
As shown in fig. 1, the economical heat pump air conditioning heat management system for the new energy automobile comprises a refrigerant pipeline for circulating a refrigerant, and a cooling water pipeline for performing heat management on the electric control of the battery and the motor.
The refrigerant pipeline comprises an electric compressor 1, an HVAC assembly 2, a Chiller heat exchanger 5 and a front-end heat exchange module 10, the HVAC assembly 2 comprises an evaporator 2-1 and an indoor condenser 2-2, the front-end heat exchange module 10 comprises an outdoor heat exchanger 10-1, an outlet of the electric compressor 1 is connected with the indoor condenser 2-2, the indoor condenser 2-2 is respectively connected with a first electromagnetic valve 7 and a second electromagnetic valve 9, the first electromagnetic valve 7 is respectively connected with the Chiller heat exchanger 5, the evaporator 2-1 and an outlet of a one-way valve 17, the second electromagnetic valve 9 is connected with the outdoor heat exchanger 10-1, the outer heat exchanger 10-1 and an inlet of the one-way valve 17 are connected with a third electromagnetic valve 18, and the Chiller heat exchanger 5, the evaporator 2-1 and the third electromagnetic valve 18 are connected with an inlet of the electric compressor 1.
In the implementation, the refrigerant pipeline further comprises a first electronic expansion valve 3, a second electronic expansion valve 4 and a third electronic expansion valve 8, the first electronic expansion valve 3 is arranged between the first electromagnetic valve 7 and the Chiller heat exchanger 5, the second electronic expansion valve 4 is arranged between the first electromagnetic valve 7 and the evaporator 2-1, and the third electronic expansion valve 8 and the second electromagnetic valve 9 are arranged between the indoor condenser 2-2 and the outdoor heat exchanger 10-1 in parallel. In order to facilitate accurate control of the refrigerant flow rate,
in this embodiment, the refrigerant pipeline further includes a vapor-liquid separator 6, and the vapor-liquid separator 6 is disposed between the Chiller heat exchanger 5, the evaporator 2-1, the third electromagnetic valve 18, and the electric compressor 1. The compressor is protected when refrigerant liquid returns after start-up, operation or defrost (heat pump).
In this embodiment, the front heat exchange module 10 further includes an electric fan 10-2 for directing outdoor air flow to the outdoor heat exchanger 10-1.
The cooling water pipeline comprises a first water pump 11, a battery 12, a four-way water valve 13, a second water pump 14, a motor electric control 15 and a three-way water valve 16, wherein an inlet of the first water pump 11 is connected with a Chiller heat exchanger 5, an outlet of the first water pump 11 is connected with the battery 12, the battery 12 is connected with a first pipe orifice of the four-way water valve 13, a second pipe orifice of the four-way water valve 13 is connected with the Chiller heat exchanger 5, a third pipe orifice of the four-way water valve 13 is connected with a first pipe orifice of the three-way water valve 16, a fourth pipe orifice of the four-way water valve 13 is connected with an inlet of the second water pump 14, an outlet of the second water pump 14 is connected with the motor electric control 15, the motor electric control 15 is respectively connected with an outer heat exchanger 10-1 and a second pipe orifice of the three-way water valve 16, and a third pipe orifice of the three-way water valve 16 is connected with the outer heat exchanger 10-1.
The invention relates to a working method of an economical heat pump air conditioner heat management system for a new energy automobile, which comprises the following steps:
in a passenger compartment refrigeration mode, the second electromagnetic valve 9 is opened, the first electromagnetic valve 7 and the third electromagnetic valve 18 are closed, a refrigeration cycle is formed by the electric compressor 1, the indoor condenser 2-2, the second electromagnetic valve 9, the outdoor heat exchanger 10-1, the one-way valve 17, the second electronic expansion valve 4, the evaporator 2-1 and the vapor-liquid separator 6, in the refrigeration cycle, high-temperature and high-pressure refrigerant transfers heat to outdoor air through the outdoor heat exchanger 10-1, low-temperature and low-pressure refrigerant cools circulating air in a vehicle room passing through the HVAC assembly 2 through the evaporator 2-1, and cold air is sent out through a blowing surface air inlet of the HVAC assembly (2) to achieve the purpose of refrigerating the vehicle room;
in a battery cooling mode, when the ambient temperature is lower than 30 ℃, a first pipe orifice and a fourth pipe orifice of a four-way water valve 13 are communicated, a second pipe orifice and a third pipe orifice are communicated, a first pipe orifice and a third pipe orifice of a three-way water valve 16 are communicated, a first water pump 11, a battery 12, a first pipe orifice and a fourth pipe orifice of the four-way water valve 13, a second water pump 14, a motor electronic control 15, an outdoor heat exchanger 10-1, a first pipe orifice and a third pipe orifice of the three-way water valve 16, a second pipe orifice and a third pipe orifice of the four-way water valve 13 and a Chiller heat exchanger 5 form a water path circulation, the heat of the battery 12 is transferred to outdoor air through the outdoor heat exchanger 10-1 by the water path circulation, when the ambient temperature is equal to or higher than 30 ℃, the first pipe orifice and the second pipe orifice of the four-way water valve 13 are communicated, the water path circulation is formed by the first water pump 11, the battery 12, the first pipe orifice and the second pipe orifice of the four-way water valve 13 and the Chiller heat exchanger 5, the electromagnetic valve 7 and the electromagnetic valve 18 is closed, the electric compressor 1, the indoor condenser 2-2, the electromagnetic valve 9, the electronic heat exchanger 10-1, the Chiller heat exchanger 6 transfers the heat to the outdoor heat to the refrigerating air to the outdoor heat exchanger by the Chiller heat exchanger 5, and the refrigerating air circulation of the outdoor heat exchanger and the Chiller heat exchanger 10-1;
in a passenger compartment and battery simultaneous refrigeration mode, a second electromagnetic valve 9 is opened, a first electromagnetic valve 7 and a third electromagnetic valve 18 are closed, a refrigeration cycle is composed of an electric compressor 1, an indoor condenser 2-2, the electromagnetic valve 9, an outdoor heat exchanger 10-1, a one-way valve 17, a second electronic expansion valve 4, a first electronic expansion valve 3, an evaporator 2-1, a Chiller heat exchanger 5 and a gas-liquid separator 6, a first pipe orifice and a second pipe orifice of a four-way valve 13 are communicated, a water pump 11, a battery 12, a first pipe orifice and a second pipe orifice of the four-way valve 13 and the Chiller heat exchanger 5 form a waterway cycle, high-temperature and high-pressure refrigerant transfers heat to outdoor air through the outdoor heat exchanger 10-1, low-temperature and low-pressure refrigerant simultaneously cools the air quantity circulating in a vehicle room passing through the HVAC assembly 2 through the evaporator 2-1 and the Chiller heat exchanger 5, simultaneously transfers the heat of the battery 12 to the refrigerant through the Chiller heat exchanger 5 through the waterway cycle, and then is discharged to the atmosphere through the outdoor heat exchanger 10-1, and the purpose of simultaneously cooling the vehicle room and the battery is achieved;
in a passenger compartment heat pump heating mode, the electromagnetic valve III 18 is opened, the electromagnetic valve I7 and the electromagnetic valve II 9 are closed, a heating cycle is formed by the electric compressor 1, the indoor condenser 2-2, the electronic expansion valve III 8, the outdoor heat exchanger 10-1, the electromagnetic valve III 18 and the vapor-liquid separator 6, a high-temperature and high-pressure refrigerant heats vehicle room air flowing through the HVAC assembly 2 through the indoor condenser 2-2 to achieve the heating purpose, and absorbed heat is obtained from an outdoor-10-25 ℃ low-temperature environment through the outdoor heat exchanger 10-1;
in a waste heat recovery heating mode, the first electromagnetic valve 7, the third electromagnetic valve 18 are opened, the second electromagnetic valve 9 is closed, a heating cycle is formed by the electric compressor 1, the indoor condenser 2-2, the electronic expansion valve three 8, the outdoor heat exchanger 10-1, the third electromagnetic valve 18 and the vapor-liquid separator 6, another heating cycle is formed by the electric compressor 1, the indoor condenser 2-2, the first electromagnetic valve 7, the first electronic expansion valve 3, the Chiller heat exchanger 5 and the vapor-liquid separator 6, the first pipe orifice and the fourth pipe orifice of the four-way water valve 13 are communicated, the second pipe orifice and the third pipe orifice are communicated, the first pipe orifice and the second pipe orifice of the three-way water valve 16 are communicated, the water pump I11, the battery 12, the first and fourth nozzles of the four-way water valve 13, the water pump II 14, the motor electronic control 15, the first and second nozzles of the three-way water valve 16, the second and third nozzles of the four-way water valve 13 and the Chiller heat exchanger 5 form a water circuit cycle, a high-temperature and high-pressure refrigerant heats indoor air flowing through the HVAC assembly 2 through the condenser 2-2 in the inner chamber to achieve the heating purpose, the refrigerant absorbs heat from a low-temperature environment of-10-25 ℃ outdoors through the outdoor heat exchanger 10-1, and meanwhile, the heat of the battery 12 and the motor electronic control 15 is transferred to the refrigerant through the Chiller heat exchanger 5 through the water circuit cycle;
in a battery heating mode, a first pipe orifice and a fourth pipe orifice of the four-way water valve 13 are communicated, a second pipe orifice and a third pipe orifice are communicated, a first pipe orifice and a second pipe orifice of the three-way water valve 16 are communicated, a water pump I11, a battery 12, a first pipe orifice and a fourth pipe orifice of the four-way water valve 13, a water pump II 14, a motor electric control 15, a first pipe orifice and a second pipe orifice of the three-way water valve 16, a second pipe orifice and a third pipe orifice of the four-way water valve 13 and the Chiller heat exchanger 5 form a water path circulation, and heat generated by the motor electric control 15 is directly transmitted to the battery 12;
the demisting mode is divided into a refrigerating demisting mode and a refrigerating reheating demisting mode, when the ambient temperature is equal to or higher than 15 ℃, the refrigerating demisting mode is required to be carried out when the vehicle room is fogged, when the ambient temperature is lower than 15 ℃, the refrigerating reheating demisting mode is required to be carried out when the vehicle room is fogged, under the refrigerating demisting mode, the electric compressor 1, the indoor condenser 2-2, the electromagnetic valve second 9, the outdoor heat exchanger 10-1, the one-way valve 17, the electronic expansion valve second 4, the evaporator 2-1 and the vapor-liquid separator 6 form a refrigerating cycle, in the refrigerating cycle, high-temperature and high-pressure refrigerant transfers heat to outdoor air through the outdoor heat exchanger 10-1, low-temperature refrigerant cools the circulating air quantity in the vehicle room passing through the HVAC assembly 2 through the evaporator 2-1, cold air is sent out through a demisting air supply opening of the HVAC assembly 2 to remove water mist on a vehicle window, under the refrigerating and reheating demisting mode, the electric compressor 1, the indoor condenser 2-2, the electromagnetic valve first 7, the electronic expansion valve second 4, the evaporator 2-1 and the vapor-liquid separator 6 form a refrigerating cycle, the indoor air passes through the indoor air flowing through the HVAC assembly 2-1, is heated and dried, and then the low-pressure water mist is removed;
in a defrosting protection mode, the second electromagnetic valve 9 is opened, the first electromagnetic valve 7 and the third electromagnetic valve 18 are closed, a refrigeration cycle is formed by the electric compressor 1, the indoor condenser 2-2, the second electromagnetic valve 9, the outdoor heat exchanger 10-1, the one-way valve 17, the first electronic expansion valve 3, the Chiller heat exchanger 5 and the vapor-liquid separator 6, the first pipe orifice and the fourth pipe orifice of the four-way water valve 13 are communicated, the second pipe orifice and the third pipe orifice are communicated, the first pipe orifice and the second pipe orifice of the three-way water valve 16 are communicated, the first pipe orifice and the second pipe orifice of the four-way water valve 16 are communicated, the first pipe orifice and the fourth pipe orifice of the four-way water valve 13, the second water pump 14, the electric motor controller 15, the first pipe orifice and the second pipe orifice of the three-way water valve 16, the second pipe orifice and the third pipe orifice of the four-way water valve 13 and the Chiller heat exchanger 5 form a water path cycle, when high-temperature and high-pressure refrigerant flows through the outdoor heat exchanger 10-1, frost of the outer heat exchanger 10-1 is melted, and heat of the outer heat exchanger 10-1 is transferred to the refrigerant through the water path through the Chiller heat exchanger 5.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and amendments can be made without departing from the principle of the present invention, and these modifications and amendments should also be considered as the protection scope of the present invention.
Claims (5)
1. An economical heat pump air conditioning heat management system for a new energy automobile comprises a refrigerant pipeline for circulating a refrigerant, and a cooling water pipeline for performing heat management on electric control of a battery and a motor; the method is characterized in that:
the refrigerant pipeline comprises an electric compressor (1), an HVAC assembly (2), a Chiller heat exchanger (5) and a front-end heat exchange module (10), the HVAC assembly (2) comprises an evaporator (2-1) and an indoor condenser (2-2), the front-end heat exchange module (10) comprises an outdoor heat exchanger (10-1), an outlet of the electric compressor (1) is connected with the indoor condenser (2-2), the indoor condenser (2-2) is respectively connected with a first electromagnetic valve (7) and a second electromagnetic valve (9), the first electromagnetic valve (7) is respectively connected with the Chiller heat exchanger (5), the evaporator (2-1) and an outlet of a one-way valve (17), the second electromagnetic valve (9) is connected with the outdoor heat exchanger (10-1), an inlet of the outer heat exchanger (10-1) and the one-way valve (17) is connected with a third electromagnetic valve (18), the Chiller heat exchanger (5), the evaporator (2-1) and the third electromagnetic valve (18) are connected with an inlet of the electric compressor (1);
the cooling water pipeline comprises a first water pump (11), a battery (12), a four-way water valve (13), a second water pump (14), a motor electric controller (15) and a three-way water valve (16), wherein an inlet of the first water pump (11) is connected with a Chiller heat exchanger (5), an outlet of the first water pump (11) is connected with the battery (12), the battery (12) is connected with a first pipe orifice of the four-way water valve (13), a second pipe orifice of the four-way water valve (13) is connected with the Chiller heat exchanger (5), a third pipe orifice of the four-way water valve (13) is connected with a first pipe orifice of the three-way water valve (16), a fourth pipe orifice of the four-way water valve (13) is connected with an inlet of the second water pump (14), an outlet of the second water pump (14) is connected with the motor electric controller (15), the motor electric controller (15) is respectively connected with an outer heat exchanger (10-1) and a second pipe orifice of the three-way water valve (16), and a third pipe orifice of the three-way water valve (16) is connected with the outer heat exchanger (10-1).
2. The economical heat pump air conditioner heat management system for the new energy automobile as claimed in claim 1, characterized in that: the refrigerant pipeline further comprises a first electronic expansion valve (3), a second electronic expansion valve (4) and a third electronic expansion valve (8), wherein the first electronic expansion valve (3) is arranged between the first electromagnetic valve (7) and the Chiller heat exchanger (5), the second electronic expansion valve (4) is arranged between the first electromagnetic valve (7) and the evaporator (2-1), and the third electronic expansion valve (8) and the second electromagnetic valve (9) are arranged between the indoor condenser (2-2) and the outdoor heat exchanger (10-1) in parallel.
3. The economical heat pump air conditioner heat management system for the new energy automobile as claimed in claim 2, characterized in that: the refrigerant pipeline further comprises a vapor-liquid separator (6), and the vapor-liquid separator (6) is arranged among the Chiller heat exchanger (5), the evaporator (2-1), the electromagnetic valve III (18) and the electric compressor (1).
4. The economical heat pump air conditioner heat management system for the new energy automobile as claimed in claim 3, characterized in that: the front end heat exchange module (10) further comprises an electric fan (10-2) for directing an outdoor air flow to the outdoor heat exchanger (10-1).
5. The working method of the economical heat pump air-conditioning heat management system for the new energy automobile according to claim 4, characterized by comprising the following steps:
in a passenger compartment refrigeration mode, a refrigeration cycle is composed of an electric compressor (1), an indoor condenser (2-2), a second electromagnetic valve (9), an outdoor heat exchanger (10-1), a one-way valve (17), a second electronic expansion valve (4), an evaporator (2-1) and a vapor-liquid separator (6), in the refrigeration cycle, a high-temperature high-pressure refrigerant transfers heat to outdoor air through the outdoor heat exchanger (10-1), a low-temperature low-pressure refrigerant cools circulating air in a vehicle chamber passing through an HVAC assembly (2) through the evaporator (2-1), and cold air is sent out through a blowing surface air inlet of the HVAC assembly (2) to achieve the purpose of refrigerating the vehicle chamber;
in a battery cooling mode, when the ambient temperature is lower than 30 ℃, a first water pump (11), a battery (12), a first and a fourth pipe orifices of a four-way water valve (13), a second water pump (14), a motor electronic control unit (15), an outdoor heat exchanger (10-1), a first and a third pipe orifices of a three-way water valve (16), a second and a third pipe orifices of the four-way water valve (13) and a Chiller heat exchanger (5) form a water path circulation, heat of the battery (12) is transferred to outdoor air through the outdoor heat exchanger (10-1) by the water path circulation, when the ambient temperature is equal to or higher than 30 ℃, the battery needs forced cooling, the water path circulation is formed by the first water pump (11), the battery (12), the first and the second pipe orifices of the four-way valve (13) and the Chiller heat exchanger (5), a refrigerating circulation is formed by an electric compressor (1), an indoor condenser (2-2), a second electromagnetic valve (9), the outdoor heat exchanger (10-1), a one-way valve (17), a first electronic expansion valve (3), a Chiller heat exchanger (5) and a vapor-liquid separator (6), and the heat of the battery is transferred to the outdoor heat exchanger (10-1) by the circulation;
in a passenger compartment and battery simultaneous refrigeration mode, a refrigeration cycle is composed of an electric compressor (1), an indoor condenser (2-2), an electromagnetic valve II (9), an outdoor heat exchanger (10-1), a one-way valve (17), an electronic expansion valve II (4), an electronic expansion valve I (3), an evaporator (2-1), a Chiller heat exchanger (5) and a vapor-liquid separator (6), a waterway cycle is composed of a water pump I (11), a battery (12), a first pipe orifice and a second pipe orifice of a four-way valve (13) and the Chiller heat exchanger (5), high-temperature high-pressure refrigerant transfers heat to outdoor air through the outdoor heat exchanger (10-1), low-temperature refrigerant simultaneously cools circulating air in a vehicle room passing through an HVAC assembly (2) through the evaporator (2-1) and the Chiller heat exchanger (5), simultaneously transfers heat of the battery (12) to the refrigerant through the Chiller heat exchanger (5) through the waterway cycle, and then discharges the refrigerant to the outdoor heat exchanger (10-1) to the atmosphere, and the purpose of cooling the vehicle room and the battery simultaneously is achieved;
in a heating mode of a heat pump of a passenger compartment, a heating cycle consists of an electric compressor (1), an indoor condenser (2-2), an electronic expansion valve III (8), an outdoor heat exchanger (10-1), an electromagnetic valve III (18) and a vapor-liquid separator (6), a high-temperature and high-pressure refrigerant heats air in a vehicle room flowing through an HVAC assembly (2) through the indoor condenser (2-2) to achieve the purpose of heating, and the refrigerant obtains heat from a low-temperature environment of-10 ℃ to 25 ℃ outdoors through the outdoor heat exchanger (10-1);
in a waste heat recovery heating mode, a heating cycle is composed of an electric compressor (1), an indoor condenser (2-2), an electronic expansion valve (8), an outdoor heat exchanger (10-1), a solenoid valve (18) and a vapor-liquid separator (6), another heating cycle is composed of the electric compressor (1), the indoor condenser (2-2), the solenoid valve (7), the electronic expansion valve (3), a Chiller heat exchanger (5) and the vapor-liquid separator (6), a waterway cycle is composed of a water pump (11), a battery (12), a four-way water valve (13), a first pipe orifice, a fourth pipe orifice, a water pump (14), a motor point control (15), a three-way pipe orifice (16), a four-way water valve (13), a second pipe orifice, a third pipe orifice and a Chiller heat exchanger (5), high-temperature and high-pressure refrigerant heats indoor air flowing through an HVAC assembly (2) through the indoor condenser (2-2), the purpose of heating is achieved, the refrigerant absorbs heat from a low-temperature environment of 25 ℃ through the outdoor water valve (10-1), and simultaneously, the heat of the battery (12) and the waterway heat of the electric control refrigerant (15) are transferred to the Chiller heat exchanger (5) through the motor (5) through the waterway cycle;
in a battery heating mode, a water path circulation is formed by a first water pump (11), a battery (12), a first pipe orifice and a fourth pipe orifice of a four-way water valve (13), a second water pump (14), a motor electric control unit (15), a first pipe orifice and a second pipe orifice of a three-way water valve (16), a second pipe orifice and a third pipe orifice of the four-way water valve (13) and a Chiller heat exchanger (5), and heat generated by the motor electric control unit (15) is directly transferred to the battery (12);
the defogging mode is divided into a refrigeration defogging mode and a refrigeration reheating defogging mode, when the ambient temperature is equal to or higher than 15 ℃, a refrigeration demisting mode is needed when the vehicle room is fogged, a refrigeration reheating demisting mode is needed when the ambient temperature is lower than 15 ℃ and the vehicle room is fogged, in the refrigeration demisting mode, a refrigeration cycle is formed by the electric compressor (1), the indoor condenser (2-2), the electromagnetic valve II (9), the outdoor heat exchanger (10-1), the one-way valve (17), the electronic expansion valve II (4), the evaporator (2-1) and the vapor-liquid separator (6), in the refrigeration cycle, high-temperature and high-pressure refrigerant transfers heat to outdoor air through an outdoor heat exchanger (10-1), low-temperature and low-pressure refrigerant cools the circulating air volume in the vehicle chamber passing through an HVAC assembly (2) through an evaporator (2-1), cold air is sent out through a demisting air supply outlet of the HVAC assembly (2) to remove water mist on a vehicle window, in a refrigerating, reheating and demisting mode, a refrigerating cycle is formed by an electric compressor (1), an indoor condenser (2-2), a first electromagnetic valve (7), a second electronic expansion valve (4), an evaporator (2-1) and a vapor-liquid separator (6), indoor air flowing through an HVAC assembly (2) is firstly cooled by the evaporator (2-1), then heated by the indoor condenser (2-2), and heated dry hot air is introduced into a vehicle to remove water mist on vehicle windows;
in a defrosting protection mode, a refrigeration cycle is composed of an electric compressor (1), an indoor condenser (2-2), a second electromagnetic valve (9), an outdoor heat exchanger (10-1), a one-way valve (17), a first electronic expansion valve (3), a Chiller heat exchanger (5) and a vapor-liquid separator (6), a water pump I (11), a battery (12), a first pipe orifice and a fourth pipe orifice of a four-way water valve (13), a second water pump (14), a motor electric control valve (15), a first pipe orifice and a second pipe orifice of a three-way water valve (16), a second pipe orifice and a third pipe orifice of the four-way water valve (13) and the Chiller heat exchanger (5) form a water path cycle, when high-temperature and high-pressure refrigerant flows through the outdoor heat exchanger (10-1), frost of the external heat exchanger (10-1) is melted, and meanwhile, heat of the battery (12) and the motor electric control valve (15) is transferred to the refrigerant through the Chiller heat exchanger (5) through the water path cycle.
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| CN117301807A (en) * | 2023-12-01 | 2023-12-29 | 江苏开沃汽车有限公司 | New energy automobile thermal management integrated module |
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