CN211335506U - Heat management system and vehicle air conditioner heat management device - Google Patents
Heat management system and vehicle air conditioner heat management device Download PDFInfo
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- CN211335506U CN211335506U CN201921198456.8U CN201921198456U CN211335506U CN 211335506 U CN211335506 U CN 211335506U CN 201921198456 U CN201921198456 U CN 201921198456U CN 211335506 U CN211335506 U CN 211335506U
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- 239000007788 liquid Substances 0.000 claims abstract description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 34
- 239000000498 cooling water Substances 0.000 claims description 33
- 238000004378 air conditioning Methods 0.000 claims description 6
- 239000003507 refrigerant Substances 0.000 description 87
- 238000010438 heat treatment Methods 0.000 description 27
- 238000000034 method Methods 0.000 description 17
- 238000005057 refrigeration Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 10
- 238000001704 evaporation Methods 0.000 description 5
- 230000008020 evaporation Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 238000007791 dehumidification Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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Abstract
The utility model provides a thermal management system and vehicle air conditioner heat management device. This system includes high temperature module, low temperature module, bellows, and wherein the high temperature module has: the first compressor, the first reversing valve, the first gas-liquid separator and the first throttling valve are arranged in the air box; the first reversing valve is provided with four ports, namely a first port, a second port, a third port and a fourth port; the heat exchanger at least comprises a passage L1 and a passage L2, a passage first port of the passage L1 is connected with a first port end of a first reversing valve of the high-temperature module, a passage second port of the passage L1 is connected with a first throttle valve port of a first throttle valve of the high-temperature module, a passage third port of the passage L2 is connected with a third port end of a second reversing valve of the low-temperature module, a passage fourth port of the passage L2 is connected with a second throttle valve end of the low-temperature module, and heat exchange is carried out between the passage L1 and the passage L2.
Description
Technical Field
The utility model relates to a heat management system especially relates to a heat management system and vehicle air conditioner heat management device.
Background
With the vigorous development of electric automobiles, automobile air conditioners become a hot spot for research. The main bottleneck problem restricting the development of the automobile air conditioning industry is the heating problem in the ultralow temperature environment, the PTC heating efficiency is low, the endurance mileage of the electric vehicle is seriously influenced, and the heat pump system can only normally operate under the working condition of more than-10 ℃. When the temperature is lower than-15 ℃, the heat pump system cannot normally operate. For transportation vehicles, normal heating operation is required under an ultralow temperature environment (-15 ℃), and refrigeration energy efficiency under high temperature can reduce energy consumption and improve energy efficiency as much as possible. The existing heat pump system has the problems of large space temperature fluctuation and uncomfortable heating; and when the CO2 refrigerating system is operated at a higher temperature, the operation of the CO2 refrigerating system has the problem of poor energy efficiency.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to the above-mentioned defect, provide a from overlapping heat pump system and operation method and device thereof to mainly solve the problem that the heating performance of the ultra-low temperature environment (-15 ℃ under) vehicle air conditioner R1234yf type refrigerant heat pump among the prior art is poor and CO2 system cooling performance is poor, reach and improve the cabin heating capacity under the super low temperature, when realizing the refrigeration cabin dual temperature district function, outside heat exchanger defrosting cabin interior temperature fluctuation little technological effect.
In one aspect, the utility model provides a thermal management system, including high temperature module, low temperature module, bellows, the high temperature module has: the air box is internally provided with a first heat exchanger module; the first reversing valve is provided with four ports, namely a first port, a second port, a third port and a fourth port;
wherein the suction side of the first compressor is connected with the inlet of the first gas-liquid separator, the discharge side of the first compressor is connected with the first reversing valve, the outlet of the first gas-liquid separator is connected with the first reversing valve, the end of the first reversing valve is communicated with the inlet of the first heat exchanger module, and the outlet of the first heat exchanger module is connected with the end of the first throttle valve;
the low-temperature module has: the second compressor, the second reversing valve, the second gas-liquid separator, the second throttling valve and the second heat exchanger module; the second reversing valve is provided with four ports, namely a first port, a second port, a third port and a fourth port, the suction side of the second compressor is connected with the inlet of the first gas-liquid separator, the exhaust side of the second compressor is connected with the end of the second reversing valve, the outlet of the second gas-liquid separator is connected with the end of the second reversing valve, the end of the second reversing valve is communicated with the inlet of the second heat exchanger module, and the outlet of the second heat exchanger module is connected with the end of the second throttling valve;
the heat exchanger comprises a high-temperature module, a low-temperature module and a low-temperature module, and is characterized by further comprising a first plate heat exchanger, wherein the first plate heat exchanger at least comprises a passage and a passage, the end of the passage is connected with the end of a first reversing valve of the high-temperature module, the end of the passage is connected with the end of a first throttling valve of the high-temperature module, the end of the passage is connected with the end of a second throttling valve of the low-temperature module, and heat exchange can be carried out between the.
Optionally, the method further comprises: an air conditioning cooling water circulation module having: the system comprises a water pump, a first flow valve, a second flow valve, a third heat exchanger and a fourth heat exchanger; the first plate heat exchanger further comprises a passage L3, wherein the water pump, the first flow valve, the second flow valve, the third heat exchanger and the first plate heat exchanger passage L3 are connected in series to form a branch L4, the fourth heat exchanger is arranged in the air box and is connected in series with the third flow valve to form a branch L5, and the branch L4 is connected in parallel with the branch L5.
Optionally, the method further comprises: the second plate heat exchanger at least comprises a passage L4, and is connected with the first plate heat exchanger, the second throttle valve and the first heat exchanger module in series to form a branch L6.
Optionally, the method further comprises: automatically controlled subassembly heat exchange module, automatically controlled subassembly heat exchange module constitutes branch road L7 by water pump, heat exchange device, the second plate heat exchanger still includes route L5, just route L4, route L5 can carry out the heat exchange, branch road L7 and route L5 intercommunication form return circuit C1.
Optionally, the method further comprises: the water pump is connected with the battery pack to form a branch L8, the second plate heat exchanger further comprises a passage L6, the passage L4, the passage L5 and the passage L6 can exchange heat in pairs, and the branch L7 is communicated with the passage L6 to form a loop C2.
Therefore, the utility model discloses a scheme, through the utility model discloses a heat management system of first plate heat exchanger overlapping high temperature module and low temperature module has solved the problem ultra-low temperature environment among the prior art (-15 ℃ down) automobile air conditioner R1234yf type refrigerant heat pump's the performance of heating poor to, when overcoming among the prior art when the temperature is less than-15 ℃, heat pump system just can't normal operating's defect, the realization improves the cabin heating ability's under the super low temperature beneficial effect.
Further, through the utility model discloses a system of first plate heat exchanger overlapping high temperature module and low temperature module air conditioner cooling water circulation module, the ability of heating of ultra-low temperature environment (-15 ℃ under) vehicle air conditioner R1234yf type refrigerant heat pump among the prior art is poor, CO2 refrigerating system can be poor under the high temperature, the big technical problem of humidity during heating, overcome among the prior art when the temperature is less than-15 ℃, heat pump system just can't normal operating, CO2 refrigerating system moves the poor defect of efficiency under the high temperature, the realization improves the cabin heating capacity under the super low temperature, show the beneficial effect who reduces CO2 refrigerating system refrigeration efficiency under the high temperature.
Further, through the utility model discloses a two plate heat exchanger overlap high temperature module and low temperature module air conditioner cooling water circulation module and automatically controlled subassembly heat exchange module's system, it is poor to have solved among the prior art ultra-low temperature environment (-15 ℃ down) vehicle air conditioner R1234yf type refrigerant heat pump's the performance of heating poor, CO2 refrigerating system can be poor under the high temperature, humidity is big when heating, it leads to the technical problem that the cabin temperature fluctuation is big to change the frost, realize that the cabin heating capacity is good under the ultra-low temperature, show the beneficial effect who reduces CO2 refrigerating system refrigeration energy consumption under the high temperature.
In another aspect, the present invention provides a method for thermal management, comprising: the high-temperature module is started, the high-temperature side refrigerant compressed by the first compressor enters the first heat exchanger module from the first reversing valve and completes heat exchange, the high-temperature side refrigerant is throttled and cooled by the first throttle valve and enters the first plate heat exchanger to be evaporated, and the evaporated high-temperature side refrigerant is reversed by the first reversing valve and then returns to the first compressor by the first gas-liquid separator; and the low-temperature module is started, the low-temperature side refrigerant compressed by the second compressor enters a passage L2 of the first plate heat exchanger from the second reversing valve, the low-temperature side refrigerant exchanges heat with the high-temperature side refrigerant in the passage L1 to form condensed refrigerant, the condensed refrigerant enters the second heat exchanger module through a second throttling valve for heat exchange, and the condensed refrigerant is reversed through the second reversing valve and then returns to the second compressor through the second gas-liquid separator.
In yet another aspect, the present invention provides a method of thermal management, comprising: the high-temperature module is started, the high-temperature side refrigerant compressed by the first compressor enters the first heat exchanger module from the first reversing valve and completes heat exchange, the high-temperature side refrigerant is throttled and cooled by the first throttle valve and enters the first plate heat exchanger to be evaporated, and the evaporated high-temperature side refrigerant is reversed by the first reversing valve and then returns to the first compressor by the first gas-liquid separator; and controlling the air conditioner cooling water circulation module, closing the third flow valve, and starting the water pump, so that cooling water enters the third heat exchanger through the water pump to exchange heat with air after the first plate heat exchanger exchanges heat with the high-temperature side refrigerant.
In yet another aspect, the present invention provides a method of thermal management, comprising: closing the low temperature module; the high-temperature module is started, the high-temperature side refrigerant compressed by the first compressor enters a passage L1 of the first plate heat exchanger from the first reversing valve, after heat exchange is completed, the high-temperature side refrigerant enters the first heat exchanger module through the first throttling valve to be evaporated, and the evaporated high-temperature side refrigerant is returned to the first compressor through the first gas-liquid separator after reversing through the first reversing valve; and controlling the air conditioner cooling water circulation module, starting the water pump, the first flow valve, the second flow valve and the third flow valve, so that cooling water flows through a passage L2 of the first plate heat exchanger and absorbs heat, and then flows through the first flow valve, the second flow valve and the third flow valve in sequence through the water pump and enters the third heat exchanger and the fourth heat exchanger.
In yet another aspect, the present invention provides a method of thermal management, comprising: the high-temperature module is started, the high-temperature side refrigerant compressed by the first compressor enters the first heat exchanger module from the first reversing valve and completes heat exchange, the high-temperature side refrigerant is throttled and cooled by the first throttle valve and enters the first plate heat exchanger to be evaporated, and the evaporated high-temperature side refrigerant is reversed by the first reversing valve and then returns to the first compressor by the first gas-liquid separator; the low-temperature module is started, the low-temperature side refrigerant compressed by the second compressor enters a passage L2 of the first plate heat exchanger from the second reversing valve, exchanges heat with the high-temperature side refrigerant in the passage L1 to form condensed refrigerant, the condensed refrigerant enters the second heat exchanger module through a second throttling valve for heat exchange, is reversed through the second reversing valve and returns to the second compressor through the second gas-liquid separator; and controlling the air conditioner cooling water circulation module, closing the third flow valve, and starting the water pump, so that cooling water enters the third heat exchanger through the water pump to exchange heat with air after the first plate heat exchanger exchanges heat with the high-temperature side refrigerant.
In yet another aspect, the present invention provides a method of thermal management, comprising: closing the low temperature module; the high-temperature module is started, the high-temperature side refrigerant compressed by the first compressor enters a passage L1 of the first plate heat exchanger from the first reversing valve, after heat exchange is completed, the high-temperature side refrigerant enters the first heat exchanger module through the first throttling valve to be evaporated, and the evaporated high-temperature side refrigerant is returned to the first compressor through the first gas-liquid separator after reversing through the first reversing valve; controlling the air conditioner cooling water circulation module, starting the water pump, the first flow valve, the second flow valve and the third flow valve, so that cooling water flows through a passage L2 of the first plate heat exchanger and absorbs heat, and flows through the first flow valve, the second flow valve and the third flow valve in sequence through the water pump, and enters the third heat exchanger and the fourth heat exchanger; and controlling the heat exchange module of the electronic control assembly to enable cooling water to circularly absorb heat in the loop C1 and to complete heat exchange with the electronic control assembly through the heat exchange device.
In yet another aspect, the present invention provides a method of thermal management, comprising: the high-temperature module is started, the high-temperature side refrigerant compressed by the first compressor enters the first heat exchanger module from the first reversing valve and completes heat exchange, the high-temperature side refrigerant is throttled and cooled by the first throttle valve and enters the first plate heat exchanger to be evaporated, and the evaporated high-temperature side refrigerant is reversed by the first reversing valve and then returns to the first compressor by the first gas-liquid separator; the low-temperature module is started, the low-temperature side refrigerant compressed by the second compressor enters a passage L2 of the first plate heat exchanger from the second reversing valve, exchanges heat with the high-temperature side refrigerant in the passage L1 to form condensed refrigerant, the condensed refrigerant enters the second heat exchanger module through a second throttling valve for heat exchange, is reversed through the second reversing valve and returns to the second compressor through the second gas-liquid separator; and controlling the electric control assembly heat exchange module to enable cooling water to circularly release heat in the loop C1 and complete heat exchange with the electric control assembly through the heat exchange device.
In yet another aspect, the present invention provides a method of thermal management, comprising: the high-temperature module is started, the high-temperature side refrigerant compressed by the first compressor enters the first heat exchanger module from the first reversing valve and completes heat exchange, the high-temperature side refrigerant is throttled and cooled by the first throttle valve and enters the first plate heat exchanger to be evaporated, and the evaporated high-temperature side refrigerant is reversed by the first reversing valve and then returns to the first compressor by the first gas-liquid separator; the low-temperature module is started, the low-temperature side refrigerant compressed by the second compressor enters a passage L2 of the first plate heat exchanger from the second reversing valve, exchanges heat with the high-temperature side refrigerant in the passage L1 to form condensed refrigerant, the condensed refrigerant enters the second heat exchanger module through a second throttling valve for heat exchange, is reversed through the second reversing valve and returns to the second compressor through the second gas-liquid separator; controlling the water pump of the heat exchange module of the electronic control assembly to make cooling water circularly absorb heat in the loop C1 and complete heat exchange with the electronic control assembly through the heat exchange device; controlling the water pump of the electric control assembly heat exchange module to enable cooling water to circularly absorb heat in the loop C2 and complete heat exchange with the battery assembly through the heat exchange device;
in yet another aspect, the present invention provides a method of thermal management, comprising: the high-temperature module is started, the high-temperature side refrigerant compressed by the first compressor enters the first heat exchanger module from the first reversing valve and completes heat exchange, the high-temperature side refrigerant is throttled and cooled by the first throttle valve and enters the first plate heat exchanger to be evaporated, and the evaporated high-temperature side refrigerant is reversed by the first reversing valve and then returns to the first compressor by the first gas-liquid separator; the low-temperature module is started, the low-temperature side refrigerant compressed by the second compressor enters a passage L2 of the first plate heat exchanger from the second reversing valve, exchanges heat with the high-temperature side refrigerant in the passage L1 to form condensed refrigerant, the condensed refrigerant enters the second heat exchanger module through a second throttling valve for heat exchange, is reversed through the second reversing valve and returns to the second compressor through the second gas-liquid separator; controlling the water pump of the heat exchange module of the electronic control assembly to make cooling water circularly release heat in the loop C1 and complete heat exchange with the electronic control assembly through the heat exchange device; controlling the water pump of the electric control assembly heat exchange module to enable cooling water to circularly release heat in the loop C2 and perform heat exchange with the battery assembly through the heat exchange device;
additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention.
The technical solution of the present invention is further described in detail by the accompanying drawings and examples.
Drawings
FIG. 1: an ultra-low temperature heating system diagram of an embodiment of the utility model is shown;
FIG. 2: a high temperature refrigeration system diagram illustrating an embodiment of the present invention;
FIG. 3: a diagram of a low temperature heating system according to an embodiment of the present invention is shown;
FIG. 4: a heating and dehumidifying system diagram according to an embodiment of the present invention is shown;
FIG. 5: a system diagram of a double-plate heat exchanger according to an embodiment of the present invention is shown;
FIG. 6: a cooling system diagram of a refrigeration and electric control assembly of an embodiment of the utility model is shown;
FIG. 7: a cooling system diagram of a refrigeration and electric control assembly and a battery assembly of an embodiment of the invention is shown;
FIG. 8: a diagram of an ultra-low temperature heating cycle and electric control component preheating system according to an embodiment of the present invention is shown;
FIG. 9: a diagram of an ultra-low temperature heating cycle and electric control assembly and battery assembly preheating system according to an embodiment of the present invention is shown;
FIG. 10: a diagram of a defrost cycle system according to an embodiment of the present invention is shown.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the embodiments of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, and "a plurality" typically includes at least two, but does not exclude the presence of at least one.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the "/" in this document generally indicates that the front and rear related objects are "in order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the embodiments of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, and "a plurality" typically includes at least two, but does not exclude the presence of at least one.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.
It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.
Self-overlapping thermal management system and operation method and thermal management device thereof
Implementation 1:
as shown in FIG. 1, the heat management system and the operation method thereof comprise a high-temperature module 1, a low-temperature module 2 and an air box 4.
The high-temperature module has: the air box comprises a first compressor 10, a first reversing valve 11, a first gas-liquid separator 14 and a first throttling valve 13, wherein a first heat exchanger module 12 is arranged in the air box; the first direction valve 11 has four ports, i.e., a first port 11a, a second port 11b, a third port 11c, and a fourth port 11 d; the suction side 101 of the first compressor 10 is connected to the inlet 141 of the first gas-liquid separator 14, the discharge side 102 of the first compressor 10 is connected to 11b of the first direction valve 11, the outlet 142 of the first gas-liquid separator 14 is connected to 11d of the first direction valve 11, the end 11c of the first direction valve 11 communicates with the inlet 121 of the first heat exchanger module 12, and the outlet 122 of the first heat exchanger module 12 is connected to the first throttle port 132 of the first throttle valve 13.
The first heat exchanger module 12 is preferably an HVAC heat exchanger, and the first reversing valve 11 is preferably a four-way valve, which can also be replaced by 2 three-way valves; the compressor 10 may be any one of a high-temperature stage compressor and an enthalpy-increasing gas compressor, and the refrigerant used in the compressor is R1234 yf.
The low-temperature module 2 includes: a second compressor 20, a second reversing valve 21, a second gas-liquid separator 24, a second throttle valve 23 and a second heat exchanger module 22; the second direction valve 21 has four ports, namely, a first port 21a, a second port 21b, a third port 21c and a fourth port 21d, the suction side 201 of the second compressor 20 is connected to the inlet 241 of the second gas-liquid separator 24, the discharge side 202 of the second compressor 20 is connected to the 21b port of the second direction valve 21, the outlet 242 of the second gas-liquid separator 24 is connected to the 21d port of the second direction valve 21, the 21a port of the second direction valve 21 is communicated with the inlet 221 of the second heat exchanger module 22, and the outlet 222 of the second heat exchanger module 22 is connected to the second throttle port 231 of the second throttle valve 23; the first plate heat exchanger 30 at least comprises a passage L1 and a passage L2, a passage first port a of the passage L1 is connected with the end 11a of the first reversing valve 11 of the high-temperature module 1, a passage second port b of the passage L1 is connected with the first throttle port 132 of the first throttle 13 of the high-temperature module 1, a passage third port c of the passage L2 is connected with the end 21c of the second reversing valve 21 of the low-temperature module 2, a passage fourth port d of the passage L2 is connected with the end 232 of the second throttle 23 of the low-temperature module 2, and heat exchange is carried out between the passage L1 and the passage L2.
The second heat exchanger module 22 can be a finned heat exchanger or other heat exchangers commonly used in the art, and the second reversing valve 21 is preferably a four-way valve, which can also be replaced by 2 three-way valves; the compressor 20 may be any one of a high-temperature stage compressor and an enthalpy-increasing gas compressor, and the refrigerant used in the compressor is CO 2.
The method of operation of the system is described below:
the high-temperature module 1 is started, the high-temperature side refrigerant compressed by the first compressor 10 enters the first heat exchanger module 12 from the first reversing valve 11 and completes heat exchange, the high-temperature side refrigerant is throttled by the first throttle valve 13 and then is cooled to enter the first plate heat exchanger 30 to be evaporated and absorb heat, the high-temperature side refrigerant after being evaporated and absorbed heat is reversed by the first reversing valve 11 and then returns to the first compressor 10 through the first gas-liquid separator 14, and the heating cycle is completed;
the low temperature module 2 is opened, the low temperature side refrigerant compressed by the second compressor 20 enters the passage L2 of the first plate heat exchanger 30 from the second direction valve 21, the compressed low temperature side refrigerant exchanges heat with the high temperature side refrigerant in the passage L1 to form a condensed refrigerant, the condensed refrigerant enters the second heat exchanger module 22 through the second throttle valve 23 for heat exchange, and the condensed refrigerant is exchanged by the second direction valve 21 and then returns to the second compressor 20 through the second gas-liquid separator 24.
This embodiment is applicable to and uses under the ultra-low temperature operating mode below-15 ℃, through arrange first plate heat exchanger 30 before high temperature module 1 and low temperature module 2, has realized the function of low temperature side refrigeration condensation and high temperature side refrigerant evaporation, acquires lower evaporating temperature, absorbs more heats from the air to improve the car cabin heating capacity under the ultra-low temperature condition.
Implementation 2:
as shown in fig. 2 to 4, compared with embodiment 1, it also has an air conditioner cooling water circulation module 3. The air conditioning cooling water circulation module 3 includes: a water pump 31, a first flow valve 32, a second flow valve 33, a third flow valve 34, a third heat exchanger 35, and a fourth heat exchanger 37; the first plate heat exchanger further comprises a passage L3, wherein the water pump 31, the first flow valve 32, the second flow valve 33, the third heat exchanger 35 and the first plate heat exchanger passage L3 are connected in series to form a branch L4, the fourth heat exchanger 37 is arranged in the air box and connected in series with the third flow valve 34 to form a branch L5, and the branch L4 is connected in parallel with the branch L5.
The first flow valve 32, the second flow valve 33 and the third flow valve 34 are preferably solenoid water valves, the fourth heat exchanger 37 is arranged in the air box 4 at a position opposite to the ground air, and the first heat exchanger module 12 is preferably an HVAC heat exchanger.
The following description corresponds to three modes of operation of the system: a high-temperature refrigeration cycle, a two-low-temperature heating cycle and a three-heating dehumidification cycle.
As shown in fig. 2, once in the high temperature refrigeration cycle mode, the low temperature module 2 is turned off; the high temperature module 1 is started.
After entering a passage L1 of the first plate heat exchanger 30 from the first reversing valve 11 and completing condensation and temperature reduction, the high-temperature and high-pressure refrigerant compressed by the first compressor 10 enters the first heat exchanger module 12 for evaporation and heat absorption after being throttled and reduced in pressure by the first throttle valve 13, and the refrigerant after evaporation and heat absorption returns to the first compressor 10 from the first gas-liquid separator 14 after being reversed by the first reversing valve 11, so that the refrigeration cycle is completed;
and controlling the air conditioner cooling water circulation module 3, starting the water pump 31, the first flow valve 32, the second flow valve 33 and the third flow valve 34, so that the cooling water flows through the passage L2 of the first plate heat exchanger 30 and absorbs heat, is pressurized by the water pump 31, sequentially flows through the first flow valve 32, the second flow valve 33 and the third flow valve 34, enters the third heat exchanger 35 and the fourth heat exchanger 37, and dissipates heat, thereby completing the whole circulation.
The high-temperature refrigeration cycle mode of the embodiment is suitable for normal refrigeration load, when the ambient temperature is below 30 ℃, and the vehicle running speed is about 80km/h, the control of the double-temperature area in the vehicle cabin can be realized by arranging the fourth heat exchanger 37 facing the ground air outlet in the air box 4.
As shown in fig. 3, under the low-temperature heating cycle: starting the high-temperature module 1, after a high-temperature high-pressure refrigerant compressed by the first compressor 10 enters the first heat exchanger module 12 from the first reversing valve 11 and completes heat exchange, the refrigerant at the high-temperature side is throttled and cooled by the first throttle valve 13 and enters the first plate heat exchanger 30 to be evaporated and absorbed heat, and after the refrigerant after being evaporated and absorbed heat is reversed by the first reversing valve 11, the refrigerant returns to the first compressor 10 from the first gas-liquid separator 14, so that the circulation at the refrigerant side is completed;
and controlling the air conditioner cooling water circulation module 3, closing the third flow valve 34, and starting the water pump 31, so that the cooling water enters the third heat exchanger 35 through the water pump 31 to exchange heat with air after exchanging heat with the high-temperature side refrigerant in the first plate heat exchanger 30, and is changed into circulation on the cooling water side.
The low-temperature heating circulation mode of the embodiment is suitable for the working condition that the environmental temperature is above 0 ℃.
As shown in fig. 4, in the third heating and dehumidifying cycle mode, the high temperature module 1 is started, after the high temperature and high pressure refrigerant compressed by the first compressor 10 enters the first heat exchanger module 12 from the first reversing valve 11 and moisture exchange is completed, the high temperature side refrigerant is throttled and cooled by the first throttle valve 13 and enters the first plate heat exchanger 30 to be evaporated and absorb heat, the refrigerant after being evaporated and absorbed heat is reversed by the first reversing valve 11 and then returns to the first compressor 10 from the first gas-liquid separator 14, and the cycle of the refrigerant side is completed;
and controlling the air conditioner cooling water circulation module 3, closing the third flow valve 34, and starting the water pump 31, so that the cooling water enters the third heat exchanger 35 through the water pump 31 to exchange heat with air after exchanging heat with the high-temperature side refrigerant in the first plate heat exchanger 30, and is changed into circulation on the cooling water side.
The low-temperature heating cycle mode of the embodiment is suitable for the requirement of defogging of the window in winter.
Example 3:
as shown in fig. 6, in addition to the system of embodiment 2, this embodiment further includes: the electric control assembly heat exchange module 5 is characterized in that the electric control assembly heat exchange module 5 is formed into a branch L7 by a water pump 41 and a heat exchange device 43, the second plate heat exchanger 40 further comprises a passage L5, the passage L4 and the passage L5 can exchange heat, and the branch L7 is communicated with the passage L5 to form a loop C1. Preferably, the electronic control assembly comprises a battery assembly, a motor assembly and an electronic control assembly.
The operation method corresponding to the implementation system comprises the following steps:
closing the low temperature module 2;
starting the high-temperature module 1, enabling a high-temperature side refrigerant compressed by the first compressor 10 to enter a passage L1 of the first plate heat exchanger 30 from the first reversing valve 11, completing heat exchange, enabling the high-temperature side refrigerant to enter the first heat exchanger module 12 through the first throttle valve 13 for evaporation, and enabling the evaporated high-temperature side refrigerant to return to the first compressor 10 through the first gas-liquid separator 14 after reversing through the first reversing valve 11;
controlling the air-conditioning cooling water circulation module 3, starting the water pump 31, the first flow valve 32, the second flow valve 33 and the third flow valve 34, so that the cooling water flows through the passage L2 of the first plate heat exchanger 30 and absorbs heat, flows through the first flow valve 32, the second flow valve 33 and the third flow valve 34 in sequence through the water pump 31, and enters the third heat exchanger 35 and the fourth heat exchanger 37;
the electronic control assembly heat exchange module 5 is controlled so that the cooling water circulates in circuit C1 absorbing heat and performing heat exchange with the electronic control assembly through the heat exchange device 43.
Through the system and the operation of the embodiment, the working conditions that the temperature of the battery is too high and needs to be reduced due to high-power output such as high-speed running or long-time climbing of the vehicle can be effectively met.
Example 4:
as shown in fig. 8, in addition to the system of embodiment 2, this embodiment further includes: the electric control assembly heat exchange module 5 is characterized in that the electric control assembly heat exchange module 5 is formed into a branch L7 by a water pump 41 and a heat exchange device 43, the second plate heat exchanger 40 further comprises a passage L5, the passage L4 and the passage L5 can exchange heat, and the branch L7 is communicated with the passage L5 to form a loop C1. Preferably, the electronic control assembly comprises a battery assembly, a motor assembly and an electronic control assembly.
Starting the high-temperature module 1, after a high-temperature side refrigerant compressed by the first compressor 10 enters the first heat exchanger module 12 from the first reversing valve 11 and completes heat exchange, the high-temperature side refrigerant is throttled and cooled by the first throttle valve 13 and enters the first plate heat exchanger 30 to be evaporated, and the evaporated high-temperature side refrigerant is reversed by the first reversing valve 11 and then returns to the first compressor 10 through the first gas-liquid separator 14;
the low-temperature module 2 is started, the low-temperature side refrigerant compressed by the second compressor 20 enters a passage L2 of the first plate heat exchanger 30 from the second reversing valve 21, and exchanges heat with the high-temperature side refrigerant in the passage L1 to form condensed refrigerant, the condensed refrigerant enters the second heat exchanger module 22 through the second throttle valve 23 for heat exchange, and is returned to the second compressor 20 through the second gas-liquid separator 24 after being reversed through the second reversing valve 21;
the electronic control assembly heat exchange module 5 is controlled so that the cooling water circulates in the circuit C1 to release heat and to perform heat exchange with the electronic control assembly through the heat exchange device 43.
Through the system and the operation of this embodiment, even the vehicle is placed under low temperature environment for a long time, also can give the cabin intensification fast after the vehicle starts, give the group battery, the motor, automatically controlled preheating makes them be in the temperature range of high efficiency work.
In summary, it is readily understood by those skilled in the art that the advantageous modes described above can be freely combined and superimposed without conflict.
The above description is only an example of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (6)
1. A thermal management system comprising a high temperature module (1), a low temperature module (2), a bellows (4), the high temperature module having: the air box comprises a first compressor (10), a first reversing valve (11), a first gas-liquid separator (14) and a first throttle valve (13), wherein a first heat exchanger module (12) is arranged in the air box; the first reversing valve (11) is provided with four ports, namely a first port (11a), a second port (11b), a third port (11c) and a fourth port (11 d);
wherein the suction side (101) of the first compressor (10) is connected with the inlet (141) of the first gas-liquid separator (14), the discharge side (102) of the first compressor (10) is connected with the second port of the first reversing valve (11), the outlet (142) of the first gas-liquid separator (14) is connected with the fourth port of the first reversing valve (11), the third port of the first reversing valve (11) is communicated with the inlet (121) of the first heat exchanger module (12), and the outlet (122) of the first heat exchanger module (12) is connected with the first throttle port (132) of the first throttle valve (13);
the low-temperature module (2) comprises: the system comprises a second compressor (20), a second reversing valve (21), a second gas-liquid separator (24), a second throttling valve (23) and a second heat exchanger module (22); the second reversing valve (21) has four ports, namely a first port (21a), a second port (21b), a third port (21c) and a fourth port (21d), the air suction side (201) of the second compressor (20) is connected with the inlet (241) of the second gas-liquid separator (24), the air exhaust side (202) of the second compressor (20) is connected with the second port end of the second reversing valve (21), the outlet (242) of the second gas-liquid separator (24) is connected with the fourth port end of the second reversing valve (21), the first port end of the second reversing valve (21) is communicated with the inlet (221) of the second heat exchanger module (22), and the outlet (222) of the second heat exchanger module (22) is connected with the second throttle port (231) of the second throttle valve (23);
characterized in that it further comprises a first plate heat exchanger (30) comprising at least a passage L1 and a passage L2, the passage first port (a) of the passage L1 being connected to the first port end of the first reversing valve (11) of the high temperature module (1), the passage second port (b) of the passage L1 being connected to the first throttle port (132) of the first throttle (13) of the high temperature module (1), the passage third port (c) of the passage L2 being connected to the third port end of the second reversing valve (21) of the low temperature module (2), the passage fourth port (d) of the passage L2 being connected to the (232) end of the second throttle (23) of the low temperature module (2), and the passage L1 being heat-exchangeable with the passage L2.
2. The thermal management system according to claim 1, further comprising an air-conditioning cooling water circulation module (3), the air-conditioning cooling water circulation module (3) having: a water pump (31), a first flow valve (32), a second flow valve (33), a third flow valve (34), a third heat exchanger (35), and a fourth heat exchanger (37); the first plate heat exchanger further comprises a passage L3, wherein the water pump (31), the first flow valve (32), the second flow valve (33), the third heat exchanger (35) and the first plate heat exchanger passage L3 are connected in series to form a branch L4, the fourth heat exchanger (37) is arranged in the air box and is connected in series with the third flow valve (34) to form a branch L5, and the branch L4 is connected in parallel with the branch L5.
3. The thermal management system according to claim 1, further comprising a second plate heat exchanger (40) comprising at least a passage L4 and a second throttle valve (23), the second plate heat exchanger (40) being in series with the first plate heat exchanger (30), the second throttle valve (23) and the first heat exchanger module (12) forming a branch L6.
4. The thermal management system according to claim 3, further comprising an electronic control assembly heat exchange module (5), wherein the electronic control assembly heat exchange module (5) is composed of a water pump (41) and a heat exchange device (43) to form a branch L7, the second plate heat exchanger (40) further comprises a passage L5, the passage L4 and the passage L5 can exchange heat, and the branch L7 is communicated with the passage L5 to form a loop C1.
5. The thermal management system of claim 3, further comprising a water pump (31) and a battery pack (44), wherein the water pump (31) is connected with the battery pack (44) to form a branch L8, the second plate heat exchanger (40) further comprises a passage L6, the passage L4, the passage L5 and the passage L6 are in heat exchange, and the branch L7 is communicated with the passage L6 to form a loop C2.
6. A heat management apparatus for an air conditioner of an automobile, comprising the heat management system according to any one of claims 1 to 5.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921198456.8U CN211335506U (en) | 2019-07-26 | 2019-07-26 | Heat management system and vehicle air conditioner heat management device |
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| CN201921198456.8U CN211335506U (en) | 2019-07-26 | 2019-07-26 | Heat management system and vehicle air conditioner heat management device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115200268A (en) * | 2022-06-10 | 2022-10-18 | 智己汽车科技有限公司 | Heat exchange circulation system, air conditioner and vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115200268A (en) * | 2022-06-10 | 2022-10-18 | 智己汽车科技有限公司 | Heat exchange circulation system, air conditioner and vehicle |
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