CN108387023B - Refrigerating and heating system for coupling vehicle-mounted air conditioner power battery pack - Google Patents
Refrigerating and heating system for coupling vehicle-mounted air conditioner power battery pack Download PDFInfo
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- CN108387023B CN108387023B CN201810099503.7A CN201810099503A CN108387023B CN 108387023 B CN108387023 B CN 108387023B CN 201810099503 A CN201810099503 A CN 201810099503A CN 108387023 B CN108387023 B CN 108387023B
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- electromagnetic valve
- air conditioner
- power battery
- battery pack
- valve
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 17
- 230000008878 coupling Effects 0.000 title claims abstract description 15
- 238000010168 coupling process Methods 0.000 title claims abstract description 15
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 15
- 238000001816 cooling Methods 0.000 claims description 15
- 238000010586 diagram Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
-
- 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
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/615—Heating or keeping warm
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/66—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells
- H01M10/663—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells the system being an air-conditioner or an engine
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
- B60H2001/00307—Component temperature regulation using a liquid flow
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
- F25B2313/02741—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using one four-way valve
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention discloses a refrigerating and heating system for a power battery pack of a coupled vehicle-mounted air conditioner, which comprises a variable-frequency compressor, an air conditioner external unit, a first throttling structure, a second throttling structure, an air conditioner internal unit, a power battery pack heat exchanger, a four-way reversing valve, a first electromagnetic valve, a second electromagnetic valve, a third electromagnetic valve, a fourth electromagnetic valve, a fifth electromagnetic valve and a sixth electromagnetic valve; the coupling system adopts a one-to-two technical scheme of a single variable frequency compressor, realizes multiple working modes by controlling the conduction direction of each valve body, utilizes a power battery pack heat exchanger to cool a power battery in summer, and simultaneously, an air conditioner indoor unit conveys cold air into a vehicle cabin; the power battery is preheated by utilizing a power battery pack heat exchanger in winter, and meanwhile, the air conditioner internal unit is used for conveying hot air into the cabin; the invention not only ensures that the power battery pack is quickly at the optimal working temperature, but also meets the running requirements of the new energy automobile under various climatic conditions.
Description
Technical Field
The invention relates to a refrigerating and heating system for a power battery pack of a coupling vehicle-mounted air conditioner, in particular to the problem of preheating and cooling of the power battery pack in the field of new energy automobiles.
Background
In recent years, new energy automobiles are widely focused and rapidly developed as energy-saving and environment-friendly transportation means instead of fuel automobiles, and vehicle-mounted power batteries are regarded as one of core components of the new energy automobiles, and the temperature has a serious influence on the energy efficiency and the service life of the new energy automobiles. Therefore, the effective preheating of the power battery in a high-temperature environment or a high-rate discharge and a low-temperature environment becomes a problem to be solved.
Disclosure of Invention
The invention aims to solve the problems of low capacity of a power battery pack at low temperature, short service life, poor temperature uniformity and the like in a high-temperature environment, and provides a technical scheme that a vehicle-mounted air conditioning system working medium fluid is utilized to efficiently preheat and cool the power battery pack.
In order to solve the technical problems, the refrigerating and heating system for the coupling vehicle-mounted air conditioner power battery pack comprises a variable frequency compressor, an air conditioner external unit, a first throttling structure, a second throttling structure, an air conditioner internal unit, a power battery pack heat exchanger, a four-way reversing valve, a first electromagnetic valve, a second electromagnetic valve, a third electromagnetic valve, a fourth electromagnetic valve, a fifth electromagnetic valve and a sixth electromagnetic valve; the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve, the fourth electromagnetic valve, the fifth electromagnetic valve and the sixth electromagnetic valve all adopt a three-position two-way structure, and the connection relation among the devices is as follows:
the outlet of the variable frequency compressor is connected to the first interface of the four-way reversing valve;
the interface II of the fifth electromagnetic valve and the four-way reversing valve, the second electromagnetic valve and the sixth electromagnetic valve form a three-position two-way mode; the first electromagnetic valve and the inlet of the variable frequency compressor, the fourth electromagnetic valve and the second electromagnetic valve form a three-position two-way mode; the third electromagnetic valve, the first throttling structure, the second throttling structure and the air conditioner indoor unit form a three-position two-way mode; the interface III of the fourth electromagnetic valve and the four-way reversing valve, the sixth electromagnetic valve and the first electromagnetic valve form a three-position two-way mode; one end of the air conditioner external unit is connected with the first throttling structure, and the other end of the air conditioner external unit is connected with a fourth interface of the four-way reversing valve; one end of the power battery pack heat exchanger is connected with one part of the first throttling structure, and the other end of the power battery pack heat exchanger is connected with the second electromagnetic valve;
the air conditioner indoor unit is connected with the power battery pack heat exchanger in parallel, wherein one parallel end is A, the other parallel end is B, the fifth electromagnetic valve is arranged at the A, the third electromagnetic valve is arranged at the B, and the fifth electromagnetic valve is connected to a second interface of the four-way reversing valve; the third electromagnetic valve is connected to one end of the air conditioner external unit through the first throttling structure; the other end of the air conditioner external unit is connected to a fourth interface of the four-way reversing valve; the fourth electromagnetic valve is arranged at a third interface of the four-way reversing valve, the first electromagnetic valve is arranged at an inlet of the variable frequency compressor, the sixth electromagnetic valve is arranged on a pipeline between the air conditioner indoor unit and the fifth electromagnetic valve, and the fourth electromagnetic valve is connected to the first electromagnetic valve through the sixth electromagnetic valve; the second electromagnetic valve is arranged on a pipeline between the power battery pack heat exchanger and the fifth electromagnetic valve, and the second electromagnetic valve is connected to the first electromagnetic valve; the second throttling structure is arranged on a pipeline between the power battery pack heat exchanger and the third electromagnetic valve.
Furthermore, the refrigerating and heating system for the coupling vehicle-mounted air conditioner power battery pack is characterized in that the first throttling structure and the second throttling structure adopt thermal expansion valves.
Compared with the prior art, the invention has the beneficial effects that:
(1) The invention provides a refrigerating and heating system for a coupled vehicle-mounted air conditioner power battery pack, which adopts a single variable frequency compressor to obviously simplify the whole vehicle system structure, and simultaneously can meet the system requirement by timely adjusting the rotating speed according to the heat exchanger, thereby avoiding the phenomenon of a large maraca trolley.
(2) The invention provides a refrigerating and heating system for a power battery pack of a coupled vehicle-mounted air conditioner, wherein a liquid cooling mode is adopted in a power battery pack preheating and cooling system, so that the problems of long air cooling time and shortened battery life are solved.
(3) The invention provides a refrigerating and heating system for a coupled vehicle-mounted air conditioner power battery pack, which provides at least four working modes and meets the running requirements of a new energy automobile under various climatic working conditions.
(4) The power battery pack heat exchanger of the coupling system is designed into a spiral plate structure of the heat exchanger of the reaction kettle, so that the heat exchange efficiency is improved, meanwhile, the temperature consistency of the power battery is maintained, the charging period of the battery is effectively shortened, and the power performance of the vehicle is improved.
Drawings
FIG. 1 is a schematic diagram of a system for preheating a battery and heating a cabin of a vehicle in accordance with the present invention;
FIG. 2 is a schematic diagram of a system for cooling a battery and cabin according to the present invention;
FIG. 3 is a schematic diagram of a system for cooling a battery and heating a cabin in accordance with the present invention;
FIG. 4 is a schematic diagram of a system for preheating a battery and cooling a cabin in accordance with the present invention;
in the figure: 1-a variable frequency compressor, 2-an air conditioner external unit, 31-a first throttling structure, 32-a second throttling structure, 4-an air conditioner internal unit, 5-a power battery pack heat exchanger, 6-a four-way reversing valve, 71-a first electromagnetic valve, 72-a second electromagnetic valve, 73-a third electromagnetic valve, 74-a fourth electromagnetic valve, 75-a fifth electromagnetic valve and 76-a sixth electromagnetic valve.
Detailed Description
The invention provides a coupling system for cooling and heating a power battery pack of a coupling vehicle-mounted air conditioner. Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It will be appreciated by those skilled in the art that the illustrated embodiments are limited only to illustrate the technical features and more detailed description of the present invention and are not intended to limit the scope of the invention.
As shown in fig. 1, the refrigeration and heating system for a power battery pack of a coupled vehicle-mounted air conditioner provided by the invention comprises a variable frequency compressor 1, an air conditioner external unit 2, a first throttling structure 31, a second throttling structure 32, an air conditioner internal unit 4, a power battery pack heat exchanger 5, a four-way reversing valve 6, a first electromagnetic valve 71, a second electromagnetic valve 72, a third electromagnetic valve 73, a fourth electromagnetic valve 74, a fifth electromagnetic valve 75 and a sixth electromagnetic valve 76; the first electromagnetic valve 71, the second electromagnetic valve 72, the third electromagnetic valve 73, the fourth electromagnetic valve 74, the fifth electromagnetic valve 75 and the sixth electromagnetic valve 76 all adopt a three-position two-way structure, and the connection relation among the devices is as follows:
the outlet of the variable frequency compressor 1 is connected to the first port of the four-way reversing valve 6.
The fifth electromagnetic valve 75 and the interface two of the four-way reversing valve 6, the second electromagnetic valve 72 and the sixth electromagnetic valve 76 form a three-position two-way mode; the first electromagnetic valve 71 and the inlet of the variable frequency compressor 1, the fourth electromagnetic valve 74 and the second electromagnetic valve 72 form a three-position two-way mode; the third electromagnetic valve 73, the first throttle structure 31, the second throttle structure 32 and the air conditioner indoor unit 4 form a three-position two-way mode; the interface III of the fourth electromagnetic valve 74 and the four-way reversing valve 6, the sixth electromagnetic valve 76 and the first electromagnetic valve 71 form a three-position two-way mode; one end of the air conditioner external unit 2 is connected with the first throttling structure 31, and the other end of the air conditioner external unit is connected with a fourth interface of the four-way reversing valve 6; one end of the power battery heat exchanger 5 is connected to one place of the first throttle structure 32 and the other end is connected to the second solenoid valve 72.
The air conditioner indoor unit 4 is connected with the power battery pack heat exchanger 5 in parallel, one parallel end is A, the other parallel end is B, the fifth electromagnetic valve 75 is arranged at the A, the third electromagnetic valve 73 is arranged at the B, and the fifth electromagnetic valve 75 is connected to the second interface of the four-way reversing valve 6. The third electromagnetic valve 73 is connected to one end of the air conditioner external 2 through the first throttle structure 31; the other end of the air conditioner external unit 2 is connected to a fourth interface of the four-way reversing valve 6. The fourth electromagnetic valve 74 is arranged at the third port of the four-way reversing valve 6.
The first solenoid valve 71 is disposed at an inlet of the inverter compressor 1. The sixth electromagnetic valve 76 is provided in a line between the air conditioner 4 and the fifth electromagnetic valve 75, and is connected from the sixth electromagnetic valve 76 to the first electromagnetic valve 71 through the fourth electromagnetic valve 74. The second solenoid valve 72 is disposed on a line between the power battery heat exchanger 5 and the fifth solenoid valve 75, and the second solenoid valve 72 is connected to the first solenoid valve 71. The second throttle structure 32 is disposed on a line between the power battery heat exchanger 5 and the third solenoid valve 73.
The coupling system of the invention only comprises one variable frequency compressor 1, adopts a one-to-two technical scheme, utilizes a power battery pack heat exchanger to cool a power battery in summer, and simultaneously, an air conditioner internal machine transmits cold air into a vehicle cabin; the power battery is preheated by the power battery pack heat exchanger in winter, and meanwhile, the air conditioner indoor unit delivers hot air to the cabin.
In the coupling system, the variable frequency compressor can perform variable frequency adjustment according to the load required by an air conditioner external unit or an air conditioner internal unit or a power battery pack heat exchanger. The first throttling structure and the second throttling structure both adopt thermal expansion valves, and the purpose is to accurately regulate the flow according to the temperature feedback signals, so that the balance of the system is maintained. The four-way reversing valve aims at realizing various working modes of the coupling system.
By utilizing the refrigerating and heating system for the coupling vehicle-mounted air conditioner power battery pack, the following working modes are realized by controlling the conduction directions of the four-way reversing valve 6, the first electromagnetic valve 71, the second electromagnetic valve 72, the third electromagnetic valve 73, the fourth electromagnetic valve 74, the fifth electromagnetic valve 75 and the sixth electromagnetic valve 76:
as shown in fig. 1, the preheating battery and cabin heating operation mode: the four-way reversing valve 6 conducts the first interface, the second interface, the third interface and the fourth interface; working medium of the system flows through a first interface and a second interface of the four-way reversing valve 6 from an outlet of the variable frequency compressor 1, then passes through the fifth electromagnetic valve 75 and is divided into two paths, wherein one path sequentially passes through the second electromagnetic valve 72, the power battery pack heat exchanger 5 and the second throttling structure 32; the other path of the working fluid sequentially flows through the sixth electromagnetic valve 76 and the air conditioner internal unit 4, the air conditioner internal unit 4 and the power battery pack heat exchanger 5 are both used as condensers, and the two paths of working fluid are converged to the third electromagnetic valve 73 and then returned to the inlet of the variable frequency compressor 1 through the first throttling structure 31, the air conditioner external unit 2, the four-way reversing valve 6, the four-way reversing valve, the fourth electromagnetic valve 74 and the first electromagnetic valve 71.
As shown in fig. 2, the cooling battery and cabin cooling operation mode: the four-way reversing valve 6 conducts the first interface, the fourth interface, the second interface and the third interface; working medium of the system flows through a first interface and a fourth interface of the four-way reversing valve 6 from an outlet of the variable frequency compressor 1, then passes through the air conditioner external unit 2, the first throttling structure 31 and the third electromagnetic valve 73 and then is divided into two paths, wherein one path sequentially passes through the air conditioner internal unit 4 and the sixth electromagnetic valve 76; the other path sequentially flows through the second throttling structure 32, the power battery pack heat exchanger 5 and the second electromagnetic valve 72, and the two paths of working media are converged to the fifth electromagnetic valve 75 and then returned to the inlet of the variable frequency compressor 1 through the interface two and the interface three of the four-way reversing valve 6, the fourth electromagnetic valve 74 and the first electromagnetic valve 71.
As shown in fig. 3, cooling battery and cabin heating operation mode: the four-way reversing valve 6 conducts the first interface, the second interface, the third interface and the fourth interface; the working medium of the system flows through the first interface and the second interface of the four-way reversing valve 6 from the outlet of the variable frequency compressor 1, then sequentially passes through the fifth electromagnetic valve 75, the sixth electromagnetic valve 76, the air conditioner indoor unit 4 and the third electromagnetic valve 73 and then is divided into two paths, one path sequentially passes through the first throttling structure 31, the air conditioner outdoor unit 2, the fourth interface of the four-way reversing valve 6, the third interface and the fourth electromagnetic valve 74, the other path sequentially passes through the second throttling structure 32, the power battery pack heat exchanger 5 and the second electromagnetic valve 72, and the two paths of working medium are converged to the first electromagnetic valve 71 and then returned to the inlet of the variable frequency compressor 1.
Under the cooling battery car cabin heat supply working mode, the air conditioner external unit and the air conditioner internal unit are used as condensers, the air conditioner internal unit supplies hot air to the car cabin, the air conditioner external unit supplies hot air to the external environment, and the problem of frosting of the air conditioner external unit in winter is effectively solved.
As shown in fig. 4, the warm-up battery and cabin cooling operation mode: the four-way reversing valve 6 conducts the first interface, the second interface, the third interface and the fourth interface; the working medium of the system flows through the first interface and the second interface of the four-way reversing valve 6 from the outlet of the variable frequency compressor 1, then sequentially passes through the fifth electromagnetic valve 75, the second electromagnetic valve 72, the power battery heat exchanger 5 and the second throttling structure 32, and then is divided into two paths, wherein one path sequentially passes through the first throttling structure 31, the air conditioner external machine 2, the fourth interface and the third interface of the four-way reversing valve 6, the other path sequentially passes through the air conditioner internal machine 4 and the sixth electromagnetic valve 76, and the two paths of working medium are converged to the fourth electromagnetic valve 74 and then returned to the inlet of the variable frequency compressor 1 through the first electromagnetic valve 71.
In conclusion, the coupling system adopts a one-to-two technical scheme of a single variable frequency compressor, the power battery is cooled by using the power battery pack heat exchanger in summer, and meanwhile, the air conditioner indoor unit delivers cold air into the cabin; the power battery is preheated by utilizing a power battery pack heat exchanger in winter, and meanwhile, the air conditioner internal unit is used for conveying hot air into the cabin; the invention not only ensures that the power battery pack is quickly at the optimal working temperature, but also meets the running requirements of the new energy automobile under various climatic conditions.
Although the invention has been described above with reference to the accompanying drawings, the invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many modifications may be made by those of ordinary skill in the art without departing from the spirit of the invention, which fall within the protection of the invention.
Claims (1)
1. The refrigerating and heating system for the power battery pack of the coupling vehicle-mounted air conditioner comprises a variable frequency compressor (1), an air conditioner external unit (2), a first throttling structure (31), a second throttling structure (32), an air conditioner internal unit (4), a power battery pack heat exchanger (5), a four-way reversing valve (6), a first electromagnetic valve (71), a second electromagnetic valve (72), a third electromagnetic valve (73), a fourth electromagnetic valve (74), a fifth electromagnetic valve (75) and a sixth electromagnetic valve (76); the first electromagnetic valve (71), the second electromagnetic valve (72), the third electromagnetic valve (73), the fourth electromagnetic valve (74), the fifth electromagnetic valve (75) and the sixth electromagnetic valve (76) all adopt a three-position two-way structure, and the connection relation among the devices is as follows:
the outlet of the variable frequency compressor (1) is connected to the first interface of the four-way reversing valve (6);
the interface II of the fifth electromagnetic valve (75) and the four-way reversing valve (6), the second electromagnetic valve (72) and the sixth electromagnetic valve (76) form a three-position two-way mode;
the first electromagnetic valve (71), the inlet of the variable frequency compressor (1), the fourth electromagnetic valve (74) and the second electromagnetic valve (72) form a three-position two-way mode;
the third electromagnetic valve (73) and the first throttling structure (31), the second throttling structure (32) and the air conditioner indoor unit (4) form a three-position two-way mode;
the interface III of the fourth electromagnetic valve (74) and the four-way reversing valve (6), the sixth electromagnetic valve (76) and the first electromagnetic valve (71) form a three-position two-way mode;
one end of the air conditioner external unit (2) is connected with the first throttling structure (31), and the other end of the air conditioner external unit is connected to a fourth interface of the four-way reversing valve (6);
one end of the power battery pack heat exchanger (5) is connected with one position of the second throttling structure (32) and the other end of the power battery pack heat exchanger is connected with the second electromagnetic valve (72);
the air conditioner indoor unit (4) is connected with the power battery pack heat exchanger (5) in parallel, wherein one parallel end is A, the other parallel end is B, the fifth electromagnetic valve (75) is arranged at the A, the third electromagnetic valve (73) is arranged at the B, and the fifth electromagnetic valve (75) is connected to a second interface of the four-way reversing valve (6);
the third electromagnetic valve (73) is connected to one end of the air conditioner external unit (2) through the first throttling structure (31); the other end of the air conditioner external unit (2) is connected to a fourth interface of the four-way reversing valve (6);
the fourth electromagnetic valve (74) is arranged at the third interface of the four-way reversing valve (6),
the first electromagnetic valve (71) is arranged at the inlet of the variable frequency compressor (1),
the sixth electromagnetic valve (76) is arranged on a pipeline between the air conditioner indoor unit (4) and the fifth electromagnetic valve (75), and is connected to the first electromagnetic valve (71) through the fourth electromagnetic valve (74) from the sixth electromagnetic valve (76);
the second electromagnetic valve (72) is arranged on a pipeline between the power battery pack heat exchanger (5) and the fifth electromagnetic valve (75), and the second electromagnetic valve (72) is connected to the first electromagnetic valve (71);
the second throttling structure (32) is arranged on a pipeline between the power battery pack heat exchanger (5) and the third electromagnetic valve (73); the first throttling structure (31) and the second throttling structure (32) adopt thermal expansion valves;
the variable frequency compressor (1) performs variable frequency adjustment according to the load required by an air conditioner external unit or an air conditioner internal unit or a power battery pack heat exchanger;
the following working modes are realized by controlling the conduction directions of the four-way reversing valve (6), the first electromagnetic valve (71), the second electromagnetic valve (72), the third electromagnetic valve (73), the fourth electromagnetic valve (74), the fifth electromagnetic valve (75) and the sixth electromagnetic valve (76): a preheating battery and a cabin heat supply working mode, and a preheating battery and a cabin cold supply working mode; and a cooling battery and cabin heat supply working mode and a cooling battery and cabin cold supply working mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810099503.7A CN108387023B (en) | 2018-01-30 | 2018-01-30 | Refrigerating and heating system for coupling vehicle-mounted air conditioner power battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810099503.7A CN108387023B (en) | 2018-01-30 | 2018-01-30 | Refrigerating and heating system for coupling vehicle-mounted air conditioner power battery pack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108387023A CN108387023A (en) | 2018-08-10 |
| CN108387023B true CN108387023B (en) | 2024-01-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810099503.7A Active CN108387023B (en) | 2018-01-30 | 2018-01-30 | Refrigerating and heating system for coupling vehicle-mounted air conditioner power battery pack |
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| CN (1) | CN108387023B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108387023A (en) | 2018-08-10 |
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