CN109737635B - Heat pump air conditioning system of electric automobile - Google Patents
Heat pump air conditioning system of electric automobile Download PDFInfo
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- CN109737635B CN109737635B CN201910137892.2A CN201910137892A CN109737635B CN 109737635 B CN109737635 B CN 109737635B CN 201910137892 A CN201910137892 A CN 201910137892A CN 109737635 B CN109737635 B CN 109737635B
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- defrosting
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- way reversing
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 33
- 238000010257 thawing Methods 0.000 claims abstract description 79
- 239000007788 liquid Substances 0.000 claims abstract description 13
- 238000010438 heat treatment Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000003507 refrigerant Substances 0.000 description 5
- 238000005485 electric heating Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Air-Conditioning For Vehicles (AREA)
Abstract
The invention discloses an electric automobile heat pump air conditioning system, which comprises an indoor heat exchanger, an outdoor heat exchanger and an expansion valve which are sequentially connected on a first pipeline, and a gas-liquid separator, a compressor and a defrosting heater which are sequentially connected on a second pipeline; a four-way reversing valve is arranged between the first pipeline and the second pipeline, the indoor heat exchanger is connected with a first port of the four-way reversing valve, the outdoor heat exchanger is connected with a second port of the four-way reversing valve, the gas-liquid separator is connected with a third port of the four-way reversing valve, and the defrosting heater is connected with a fourth port of the four-way reversing valve; the defrosting device further comprises a third pipeline, one end of the third pipeline is connected with one end of the outdoor heat exchanger, which is close to the expansion valve, the other end of the third pipeline is connected with the first outlet of the defrosting electromagnetic valve, the inlet of the defrosting electromagnetic valve is connected with the outlet of the compressor, and the second outlet of the defrosting electromagnetic valve is connected with the defrosting heater. The whole system has fewer parts, simple pipelines, simpler mode switching process and simple and convenient operation.
Description
Technical Field
The invention relates to the technical field of automobile air conditioning systems, in particular to an electric automobile heat pump air conditioning system.
Background
In the existing automobile air conditioning system, the main stream is to use PTC to realize functions such as heating and the like, and the refrigerating function is finished by another set of refrigerant system, so that two systems are matched with each other to realize a plurality of needed modes; the electric heating system directly adopts the schemes of an electric heating system, such as a PTC air heater, a PTC water heater and the like, and converts the electric energy into heat energy through direct consumption, and has the advantages that the effective heat can be obtained at very low temperature, but the electric heating system has the defects of low heating efficiency, high power consumption and serious influence on the driving range of the whole vehicle.
Chinese patent CN106042827B discloses an electric vehicle air conditioning system, an electric vehicle, and a control method of the electric vehicle air conditioning system. The system comprises a compressor, a four-way valve, an external heat exchanger, a first internal heat exchanger, a second internal heat exchanger, a first pipeline, a second pipeline, a third pipeline, a fourth pipeline, a first control valve and a second control valve. When the external heat exchanger needs defrosting, the first port and the fourth port of the four-way valve are communicated. The second port is communicated with the third port, and the second branch is communicated with the first pipeline and the second pipeline; the first control valve and the second control valve control the third pipeline to be communicated with the fourth pipeline, and the first branch pipeline is disconnected with the first pipeline and the second pipeline. The air conditioning system has more pipelines and parts and more complicated control process.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the heat pump air conditioning system of the electric automobile, which has few system components, simple control and complete functions.
In order to achieve the above object, the present invention provides an electric vehicle heat pump air conditioning system, which is characterized in that: the defrosting device comprises an indoor heat exchanger, an outdoor heat exchanger and an expansion valve which are sequentially connected on a first pipeline, and a gas-liquid separator, a compressor and a defrosting heater which are sequentially connected on a second pipeline;
a four-way reversing valve is arranged between the first pipeline and the second pipeline, the indoor heat exchanger is connected with a first port of the four-way reversing valve, the outdoor heat exchanger is connected with a second port of the four-way reversing valve, the gas-liquid separator is connected with a third port of the four-way reversing valve, and the defrosting heater is connected with a fourth port of the four-way reversing valve;
the defrosting electromagnetic valve is a two-position three-way electromagnetic valve, an inlet of the defrosting electromagnetic valve is connected with an outlet of the compressor, and a second outlet of the defrosting electromagnetic valve is connected with the defrosting heater.
Further, when the air conditioning system is in a refrigeration mode, the first port of the four-way reversing valve is connected with the third port, the second port of the four-way reversing valve is connected with the fourth port, and the inlet of the defrosting electromagnetic valve is connected with the second outlet of the defrosting electromagnetic valve.
Further, when the air conditioning system is in a heating mode, the first port of the four-way reversing valve is connected with the fourth port, the second port of the four-way reversing valve is connected with the third port, and the inlet of the defrosting electromagnetic valve is connected with the second outlet of the defrosting electromagnetic valve.
Further, when the air conditioning system is in a defrosting mode, the first port of the four-way reversing valve is connected with the fourth port, the second port of the four-way reversing valve is connected with the third port, and the inlet of the defrosting electromagnetic valve is connected with the first outlet of the defrosting electromagnetic valve.
Further, the novel heat exchanger further comprises a heat regenerator, wherein the heat regenerator comprises a first heat exchange channel and a second heat exchange channel, the first heat exchange channel is connected between the expansion valve and the outdoor heat exchanger, and the second heat exchange channel is connected between the gas-liquid separator and a third port of the four-way reversing valve.
The beneficial effects of the invention are as follows:
1. the system has few components and simple control. According to the invention, a defrosting heater is arranged between the gas-liquid separator and the fourth port of the four-way reversing valve, the switching of a defrosting mode is controlled through the third pipeline and the defrosting electromagnetic valve, and the switching of a refrigerating mode and a heating mode is controlled through the four-way reversing valve. Therefore, the whole system has fewer parts, simple pipelines, simpler mode switching process and simple and convenient operation.
2. The refrigerating capacity is increased. The heat regenerator is arranged, so that the refrigerant is in a supercooled state after being cooled by the first heat exchange channel in a refrigerating mode, the refrigerating capacity of the indoor heat exchanger is increased, and the air-conditioning heat efficiency is higher.
Drawings
Fig. 1 is a schematic diagram of an electric vehicle heat pump air conditioning system in a cooling mode.
Fig. 2 is a schematic diagram of the heat pump air conditioning system of the electric vehicle in a heating mode.
Fig. 3 is a schematic diagram of the heat pump air conditioning system of the electric vehicle in a defrosting mode.
Fig. 4 is a schematic diagram of an electric vehicle heat pump air conditioning system with a heat return.
Fig. 5 is a schematic diagram of an electric vehicle heat pump air conditioning system without a defrosting solenoid valve.
The reference numerals of the components in the drawings are as follows: the device comprises a compressor 1, a gas-liquid separator 2, a four-way reversing valve 3, an indoor heat exchanger 4, an expansion valve 5, an outdoor heat exchanger 6, a defrosting heater 7, a defrosting electromagnetic valve 8, a defrosting stop valve 801, a heat regenerator 9, a first heat exchange channel 901, a second heat exchange channel 902, a first pipeline 101, a second pipeline 102 and a third pipeline 103.
Detailed Description
The invention will be described in further detail below with reference to the drawings, for a clearer understanding of the invention, but they are not limiting.
As shown in fig. 1 to 4, an electric vehicle heat pump air conditioning system is characterized in that: comprises an indoor heat exchanger 4, an outdoor heat exchanger 6 and an expansion valve 5 which are sequentially connected on a first pipeline 101, and a gas-liquid separator 2, a compressor 1 and a defrosting heater 7 which are sequentially connected on a second pipeline 102; a four-way reversing valve 3 is arranged between the first pipeline 101 and the second pipeline 102, the indoor heat exchanger 4 is connected with a first port of the four-way reversing valve 3, the outdoor heat exchanger 6 is connected with a second port of the four-way reversing valve 3, the gas-liquid separator 2 is connected with a third port of the four-way reversing valve 3, and the defrosting heater 7 is connected with a fourth port of the four-way reversing valve 3; the defrosting device further comprises a third pipeline 103, one end of the third pipeline 103 is connected with one end of the outdoor heat exchanger 6 close to the expansion valve 5, the other end of the third pipeline is connected with a first outlet of the defrosting electromagnetic valve 8, the defrosting electromagnetic valve 8 is a two-position three-way electromagnetic valve, an inlet of the defrosting electromagnetic valve 8 is connected with an outlet of the compressor 1, and a second outlet of the defrosting electromagnetic valve 8 is connected with the defrosting heater 7. The switching of the defrosting mode is controlled through a third pipeline and a defrosting electromagnetic valve, and the switching of the refrigerating mode and the heating mode is controlled through a four-way reversing valve. Therefore, the whole system has fewer parts, simple pipelines, simpler mode switching process and simple and convenient operation.
In the above technical solution, when the air conditioning system is in the cooling mode, as shown in fig. 1, the first port of the four-way reversing valve 3 is connected with the third port, the second port of the four-way reversing valve 3 is connected with the fourth port, the inlet of the defrosting electromagnetic valve 8 is connected with the second outlet of the defrosting electromagnetic valve 8, at this time, the indoor heat exchanger 4 absorbs the heat in the automobile room, and the outdoor heat exchanger 6 releases the heat. When the front windshield is fogged, the refrigeration mode is kept unchanged, the defrosting air door is opened, the defrosting heat exchanger starts to work, the indoor heat exchanger dehumidifies and cools air firstly, then the defrosting heater heats the air again, and thus the obtained low-humidity air with proper temperature is blown to the glass for defogging, and the defogging effect can be better.
In the above technical solution, when the air conditioning system is in the heating mode, as shown in fig. 2, the first port of the four-way reversing valve 3 is connected with the fourth port, the second port of the four-way reversing valve 3 is connected with the third port, the inlet of the defrosting electromagnetic valve 8 is connected with the second outlet of the defrosting electromagnetic valve 8, the indoor heat exchanger 4 releases heat into the automobile, and the outdoor heat exchanger 6 absorbs heat. When the front windshield of the automobile frosts, the heating mode is kept unchanged, the defrosting air door opens the defrosting heater to work, hot air passing through the indoor heat exchanger is further heated and blown to the front windshield, and the front windshield is quickly defrosted.
In the above technical solution, when the air conditioning system is in the outdoor heat exchanger defrosting mode, as shown in fig. 3, the first port of the four-way reversing valve 3 is connected with the fourth port, the second port of the four-way reversing valve 3 is connected with the third port, the inlet of the defrosting electromagnetic valve 8 is connected with the first outlet of the defrosting electromagnetic valve 8, and the third pipeline 103 is connected into the system. Therefore, the refrigerant continuously enters the compressor to heat up and pressure up, and then heat is transferred to the shell of the outdoor heat exchanger, so that the outdoor heat exchanger absorbs heat and defrosting is carried out.
As a preferred scheme, as shown in fig. 4, the heat regenerator 9 further comprises a heat regenerator 9, wherein the heat regenerator 9 comprises a first heat exchange channel 901 and a second heat exchange channel 902, the first heat exchange channel 901 is connected between the expansion valve 5 and the outdoor heat exchanger 6, and the second heat exchange channel 902 is connected between the gas-liquid separator 2 and a third port of the four-way reversing valve. Therefore, when the air conditioning system is in a refrigerating mode, the heat regenerator is arranged to enable the refrigerant to be in a supercooling state after being cooled through the first heat exchange channel, so that the refrigerating capacity of the indoor heat exchanger is increased, and the heat efficiency of the air conditioner is higher.
Alternatively, as shown in fig. 5, a defrosting stop valve 801 is provided in the third pipeline 103 to replace the defrosting electromagnetic valve 8, one end of the third pipeline 103 is communicated with one end of the outdoor heat exchanger 6 close to the expansion valve 5, the other end is communicated with the outlet of the compressor 1, and meanwhile, the outlet of the compressor 1 is also communicated with the defrosting heat exchanger 7. When the air conditioning system is in a refrigerating or heating mode, the defrosting stop valve is closed, the working process of the system is unchanged, and the outlet of the compressor is directly communicated with the defrosting heat exchanger; when the air conditioning system is in a defrosting mode, the defrosting stop valve is opened, the expansion valve is closed, and the high-temperature and high-pressure gaseous refrigerant from the compressor directly releases heat into the outdoor heat exchanger, so that the defrosting function of the outer surface of the outdoor heat exchanger is realized. The defrosting stop valve is lower in price than the defrosting electromagnetic valve, and the cost of the whole system is reduced.
Claims (3)
1. An electric automobile heat pump air conditioning system which characterized in that: comprises an indoor heat exchanger (4), an expansion valve (5) and an outdoor heat exchanger (6) which are sequentially connected on a first pipeline (101), and a gas-liquid separator (2), a compressor (1) and a defrosting heater (7) which are sequentially connected on a second pipeline (102), wherein the defrosting heater (7) is used for heating air flowing through the indoor heat exchanger (4);
a four-way reversing valve (3) is arranged between the first pipeline (101) and the second pipeline (102), the indoor heat exchanger (4) is connected with a first port of the four-way reversing valve (3), the outdoor heat exchanger (6) is connected with a second port of the four-way reversing valve (3), the gas-liquid separator (2) is connected with a third port of the four-way reversing valve (3), and the defrosting heater (7) is connected with a fourth port of the four-way reversing valve (3);
the defrosting device further comprises a third pipeline (103), one end of the third pipeline (103) is connected with one end of the outdoor heat exchanger (6) close to the expansion valve (5), the other end of the third pipeline is connected with a first outlet of the defrosting electromagnetic valve (8), the defrosting electromagnetic valve (8) is a two-position three-way electromagnetic valve, an inlet of the defrosting electromagnetic valve (8) is connected with an outlet of the compressor (1), and a second outlet of the defrosting electromagnetic valve (8) is connected with the defrosting heater (7);
when the air conditioning system is in a refrigerating mode, a first port of the four-way reversing valve (3) is connected with a third port, a second port of the four-way reversing valve (3) is connected with a fourth port, and an inlet of the defrosting electromagnetic valve (8) is connected with a second outlet of the defrosting electromagnetic valve (8); when the air conditioning system is in a defrosting mode, a first port and a fourth port of the four-way reversing valve (3) are connected, a second port and a third port of the four-way reversing valve (3) are connected, and an inlet of the defrosting electromagnetic valve (8) is connected with a first outlet of the defrosting electromagnetic valve (8).
2. An electric vehicle heat pump air conditioning system according to claim 1, characterized in that: when the air conditioning system is in a heating mode, a first port of the four-way reversing valve (3) is connected with a fourth port, a second port of the four-way reversing valve (3) is connected with a third port, and an inlet of the defrosting electromagnetic valve (8) is connected with a second outlet of the defrosting electromagnetic valve (8).
3. An electric vehicle heat pump air conditioning system according to claim 1, characterized in that: still include regenerator (9), including in regenerator (9), first heat transfer passageway (901) and second heat transfer passageway (902), first heat transfer passageway (901) are connected between expansion valve (5) and outdoor heat exchanger (6), second heat transfer passageway (902) are connected between gas-liquid separator (2) and the third port of four-way reversing valve (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910137892.2A CN109737635B (en) | 2019-02-25 | 2019-02-25 | Heat pump air conditioning system of electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910137892.2A CN109737635B (en) | 2019-02-25 | 2019-02-25 | Heat pump air conditioning system of electric automobile |
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| Publication Number | Publication Date |
|---|---|
| CN109737635A CN109737635A (en) | 2019-05-10 |
| CN109737635B true CN109737635B (en) | 2024-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910137892.2A Active CN109737635B (en) | 2019-02-25 | 2019-02-25 | Heat pump air conditioning system of electric automobile |
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| Country | Link |
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| CN (1) | CN109737635B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111016582B (en) * | 2019-12-31 | 2021-06-25 | 威马智慧出行科技（上海）有限公司 | Electric automobile heat pump system and electric automobile |
| CN111167048A (en) * | 2020-01-20 | 2020-05-19 | 东风汽车集团有限公司 | Integrated vehicle-mounted automatic fire extinguishing system and method |
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| CN1606512A (en) * | 2001-12-19 | 2005-04-13 | 辛文特公司 | Vapor compression system for heating and cooling of vehicles |
| JP2011195021A (en) * | 2010-03-19 | 2011-10-06 | Denso Corp | Heat pump device for vehicle |
| JP2015033930A (en) * | 2013-08-09 | 2015-02-19 | 株式会社日本クライメイトシステムズ | Vehicle air conditioner |
| CN105928265A (en) * | 2016-05-31 | 2016-09-07 | 广东美的制冷设备有限公司 | Air conditioner system and defrosting control method thereof |
| CN106016809A (en) * | 2016-05-31 | 2016-10-12 | 广东美的制冷设备有限公司 | Air conditioning system and defrosting control method thereof |
| CN206436773U (en) * | 2017-02-10 | 2017-08-25 | 苏州赛普瑞新能源汽车空调有限公司 | A kind of air-conditioning system used for electric vehicle |
| CN108603702A (en) * | 2015-07-14 | 2018-09-28 | 株式会社电装 | Heat pump cycle |
| CN209726563U (en) * | 2019-02-25 | 2019-12-03 | 东风汽车集团有限公司 | A kind of electric automobile heat-pump air-conditioning system |
-
2019
- 2019-02-25 CN CN201910137892.2A patent/CN109737635B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1606512A (en) * | 2001-12-19 | 2005-04-13 | 辛文特公司 | Vapor compression system for heating and cooling of vehicles |
| JP2011195021A (en) * | 2010-03-19 | 2011-10-06 | Denso Corp | Heat pump device for vehicle |
| JP2015033930A (en) * | 2013-08-09 | 2015-02-19 | 株式会社日本クライメイトシステムズ | Vehicle air conditioner |
| CN108603702A (en) * | 2015-07-14 | 2018-09-28 | 株式会社电装 | Heat pump cycle |
| CN105928265A (en) * | 2016-05-31 | 2016-09-07 | 广东美的制冷设备有限公司 | Air conditioner system and defrosting control method thereof |
| CN106016809A (en) * | 2016-05-31 | 2016-10-12 | 广东美的制冷设备有限公司 | Air conditioning system and defrosting control method thereof |
| CN206436773U (en) * | 2017-02-10 | 2017-08-25 | 苏州赛普瑞新能源汽车空调有限公司 | A kind of air-conditioning system used for electric vehicle |
| CN209726563U (en) * | 2019-02-25 | 2019-12-03 | 东风汽车集团有限公司 | A kind of electric automobile heat-pump air-conditioning system |
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| CN109737635A (en) | 2019-05-10 |
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