CN113547887B - Thermal management system - Google Patents
Thermal management system Download PDFInfo
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- CN113547887B CN113547887B CN202010331529.7A CN202010331529A CN113547887B CN 113547887 B CN113547887 B CN 113547887B CN 202010331529 A CN202010331529 A CN 202010331529A CN 113547887 B CN113547887 B CN 113547887B
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- heat exchanger
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- 238000001816 cooling Methods 0.000 claims description 69
- 239000000110 cooling liquid Substances 0.000 claims description 60
- 239000003507 refrigerant Substances 0.000 claims description 47
- 238000004891 communication Methods 0.000 claims description 41
- 239000002826 coolant Substances 0.000 claims description 35
- 238000004378 air conditioning Methods 0.000 claims description 12
- 238000007791 dehumidification Methods 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 11
- 238000005057 refrigeration Methods 0.000 claims 1
- 239000003570 air Substances 0.000 description 12
- 239000012809 cooling fluid Substances 0.000 description 9
- 239000012080 ambient air Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000002918 waste heat Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00007—Combined heating, ventilating, or cooling devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
- B60H1/3223—Cooling devices using compression characterised by the arrangement or type of the compressor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
- B60H1/3227—Cooling devices using compression characterised by the arrangement or the type of heat exchanger, e.g. condenser, evaporator
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention discloses a heat management system, wherein a first flow passage of a first heat exchanger of the heat management system is communicated with an outlet of a compressor, the first flow passage of the first heat exchanger can be communicated with a branch where two parallel second heat exchangers are located and a branch where a third heat exchanger is located, and the second flow passage of the first heat exchanger can be communicated with the branch where the third heat exchanger is located and the branch where a fourth heat exchanger is located.
Description
[ Field of technology ]
The invention relates to the technical field of thermal management.
[ Background Art ]
Some devices, such as vehicles, whose thermal management systems include both heating and cooling functions, are often relatively complex, and therefore require a relatively simple thermal management system to be designed to meet the needs of the respective device.
[ Invention ]
It is an object of the present invention to provide a relatively simple thermal management system.
The heat management system comprises a refrigerant system and a cooling liquid system, wherein the refrigerant of the refrigerant system and the cooling liquid of the cooling liquid system are isolated from each other and do not circulate, the heat management system comprises a first heat exchanger, the first heat exchanger comprises two flow passages, the refrigerant system comprises a compressor, a throttling element, a first flow passage of the first heat exchanger, a second heat exchanger and a third heat exchanger, a branch where the second heat exchanger is located and a branch where the third heat exchanger is located are arranged in parallel, the compressor is communicated with the first flow passage of the first heat exchanger, and the first flow passage of the first heat exchanger can be communicated with the branch where the second heat exchanger is located and/or the branch where the third heat exchanger is located;
The cooling liquid system comprises a first cooling liquid system, the first cooling liquid system comprises a second flow passage of the first heat exchanger, at least one first pump, a fourth heat exchanger and a fifth heat exchanger, the first cooling liquid system can exchange heat with the refrigerant system in the first heat exchanger, a branch where the fourth heat exchanger is located and a branch where the fifth heat exchanger is located are arranged in parallel, the second flow passage of the first heat exchanger can be communicated with the fourth heat exchanger and/or the fifth heat exchanger, and the first pump can drive cooling liquid of the first cooling liquid system to flow.
The present embodiment provides a thermal management system, in which a first flow channel of a first heat exchanger of the thermal management system is communicated with an outlet of a compressor, the first flow channel of the first heat exchanger can be communicated with at least one of a branch where two parallel second heat exchangers are located and a branch where a third heat exchanger is located, and the second flow channel of the first heat exchanger can be communicated with the branch where the third heat exchanger is located and the branch where the fourth heat exchanger is located.
[ Description of the drawings ]
FIG. 1 is a schematic diagram of a connection of a first embodiment of the thermal management system of the present invention;
FIG. 2 is a schematic connection diagram of a second embodiment of the thermal management system of the present invention;
FIG. 3 is a schematic diagram of a connection of a third embodiment of a thermal management system of the present invention;
fig. 4 is a schematic connection diagram of a fourth embodiment of the thermal management system of the present invention.
[ Detailed description ] of the invention
The invention will be further described with reference to the drawings and the specific examples. An embodiment of the present invention provides a thermal management system that may be applied to a home thermal management system or a commercial thermal management system or a vehicular thermal management system, and an aspect of the present invention is described by taking a vehicular thermal management system as an example. Referring to fig. 1, the thermal management system includes a refrigerant system and a cooling liquid system, wherein the refrigerant of the refrigerant system and the cooling liquid of the cooling liquid system are isolated from each other and not circulated, the thermal management system includes a first heat exchanger 20, the first heat exchanger 20 includes two flow channels, a first flow channel and a second flow channel, the first flow channel of the first heat exchanger 20 is a refrigerant flow channel, the second flow channel of the first heat exchanger 20 is a cooling liquid flow channel, and when the thermal management system works, the refrigerant of the refrigerant system and the cooling liquid of the cooling liquid system can exchange heat in the first heat exchanger 20. The refrigerant system comprises a compressor 10, a throttling element, a first flow passage of a first heat exchanger 20, a first cooling branch and a second cooling branch, wherein the first cooling branch and the second cooling branch are arranged in parallel, in particular, the outlet of the compressor 10 is in communication with the inlet of the first flow passage of the first heat exchanger 20, the outlet of the first flow passage of the first heat exchanger 20 can be in communication with the inlet of the compressor 10 through the first cooling branch, the outlet of the first flow passage of the first heat exchanger 20 can also be in communication with the inlet of the compressor 10 through the second cooling branch, or, in other words, the compressor 10, the first flow passage of the first heat exchanger 20 and the first cooling branch can form a circulation loop, either the compressor 10, the first flow passage of the first heat exchanger 20 and the second cooling branch can also form a circulation circuit, or the compressor 10, the first flow passage of the first heat exchanger 20, the first cooling branch and the second cooling branch can form a circulation circuit. In addition, the refrigerant system may also include at least one check valve, e.g., the first cooling branch communicates with the inlet of the compressor via a check valve, or the second cooling branch communicates with the inlet of the compressor via a check valve, where the refrigerant system is provided with a check valve to facilitate preventing refrigerant from flowing back into the first cooling branch and the second cooling branch. In a specific embodiment, the throttling element comprises a first throttling element 52 and a second throttling element 51, the first cooling branch comprises a first throttling element 52 and a second heat exchanger 32, the first throttling element 52 and the second heat exchanger 32 are arranged in series, and further, the first flow passage of the first heat exchanger 20 is communicated with the second heat exchanger 32 through the first throttling element 52. The second cooling branch comprises a second throttling element 51 and a third heat exchanger 31, the second throttling element 51 and the third heat exchanger 31 being arranged in series, further the first flow passage of the second heat exchanger 31 being in communication with the third heat exchanger 31 through the second throttling element 51. In another specific embodiment, the throttling element is only one, the refrigerant system further comprises a valve element, the valve element can be a three-way valve or a combination of two stop valves, the first flow passage of the first heat exchanger is communicated with the valve element through the throttling element and then is communicated with the first cooling branch and the second cooling branch through the valve element, namely, throttled refrigerant can be communicated with the first cooling branch and the second cooling branch through the valve element, at this time, the first cooling branch comprises a second heat exchanger 32, the second cooling branch comprises a third heat exchanger 31, and the branch where the second heat exchanger is located and the branch where the third heat exchanger is located are arranged in parallel.
The cooling liquid system comprises a first cooling liquid system, wherein the first cooling liquid system comprises a second flow passage of the first heat exchanger 20, a first pump 204, a fourth heat exchanger 201 and a fifth heat exchanger 202, wherein the first pump 204 is communicated with the second flow passage of the first heat exchanger 20 in series, a branch circuit where the fourth heat exchanger 201 is located and a branch circuit where the fifth heat exchanger 202 is located are arranged in parallel, the parallel arrangement refers to a cooling liquid flow passage rather than a space arrangement of the heat exchangers, and the cooling liquid discharged by the second flow passage of the first heat exchanger 20 can flow into the branch circuit where the fourth heat exchanger 201 is located or the branch circuit where the fifth heat exchanger 202 is located or both the branch circuit where the fourth heat exchanger is located and the branch circuit where the fifth heat exchanger is located. Of course, the first cooling fluid system may also include two first pumps 204, where the two first pumps 204 are disposed in the first branch and the second branch, that is, one first pump is serially connected to the fourth heat exchanger 201, and the other first pump is serially connected to the fifth heat exchanger 202, so that two first pumps 204 are disposed to facilitate independent control of the flow of the first cooling fluid. In order to control the flow direction of the cooling liquid flowing out of the second flow passage of the first heat exchanger 20, the first cooling liquid system further comprises a first three-way valve 203, and the branch where the fourth heat exchanger 201 is located and the branch where the fifth heat exchanger 202 is located can be communicated with the second flow passage of the first heat exchanger through the first three-way valve 203.
In the heat management system for a vehicle, the second heat exchanger 32 and the fifth heat exchanger 202 are provided to an air conditioning box of the vehicle for adjusting the temperature in the vehicle room. In operation of the thermal management system, the refrigerant in the second heat exchanger 32 exchanges heat with air in the air conditioning case to reduce the temperature of the air conditioning case, and the coolant in the fifth heat exchanger 202 exchanges heat with air in the air conditioning case to increase the temperature of the air conditioning case. In this embodiment, the temperature damper may not be provided in the air conditioning box of the vehicle, and when the heat exchange of the fifth heat exchanger 202 is not required to raise the temperature, the first three-way valve 203 may be adjusted so that the coolant discharged from the first heat exchanger 20 does not flow to the fifth heat exchanger, or the first pump of the branch in which the fifth heat exchanger 202 is located may be turned off. Of course, if necessary, a temperature damper may be provided, and will not be described in detail. The fourth heat exchanger 201 and the third heat exchanger 31 are disposed outside the vehicle air conditioning case so that the fourth heat exchanger 201 and the third heat exchanger 31 exchange heat with ambient air.
In the present embodiment, the thermal management system includes a heating mode, a cooling mode, and a dehumidifying mode, and in the heating mode of the thermal management system, the second flow passage of the first heat exchanger 20 is in communication with the fifth heat exchanger 202, the first flow passage of the first heat exchanger is in communication with the second cooling branch, the second throttling element 51 is opened, the first flow passage of the first heat exchanger 20 is not in communication with the first cooling branch, and the first throttling element 52 is not opened. When the thermal management system is operating in the heating mode, the high-temperature and high-pressure refrigerant releases heat to the cooling liquid of the first cooling liquid system in the first heat exchanger, and the relatively low-temperature and high-pressure refrigerant absorbs heat in the ambient air in the third heat exchanger 31 after being throttled and depressurized by the second throttling element 51, and then enters the inlet of the compressor 10. The coolant enters the fifth heat exchanger 202 after the temperature rise, and exchanges heat with the air flow in the air conditioning case to raise the temperature of the air flow entering the vehicle room.
In the cooling mode of the thermal management system, the second flow passage of the first heat exchanger 20 is in communication with the fourth heat exchanger 201, the first flow passage of the first heat exchanger is in communication with the first cooling branch, i.e. the first flow passage of the first heat exchanger is in communication with the second heat exchanger 32 via the first throttling element 52. When the thermal management system is operated in the cooling mode, the high-temperature and high-pressure refrigerant releases heat to the cooling liquid of the first cooling liquid system in the first heat exchanger, the relatively low-temperature and high-pressure refrigerant throttles and reduces pressure in the first throttling element 52, and then absorbs heat of air in the air conditioning box in the second heat exchanger 32, so that the temperature of air flowing into the vehicle room is reduced, and then the air enters the inlet of the compressor, and after the temperature is increased, the cooling liquid enters the fourth heat exchanger 201 to exchange heat with ambient air, and the heat is released to the ambient air.
The dehumidification modes of the thermal management system include a first dehumidification mode, a second dehumidification mode, and a third dehumidification mode. In a first dehumidification mode of the thermal management system, the second flow passage of the first heat exchanger 20 is in communication with the fifth heat exchanger 202, the second flow passage of the first heat exchanger 20 is in communication with the fourth heat exchanger 201, and the first flow passage of the first heat exchanger 20 is in communication with the first cooling branch, i.e. the first flow passage of the first heat exchanger 20 is in communication with the second heat exchanger 32 via the first throttling element 52. In the first dehumidification mode of the thermal management system, heat of the thermal management system is released through the fourth heat exchanger 201 and the fifth heat exchanger 202, and cold of the thermal management system is released through the second heat exchanger 32. In the second dehumidification mode of the thermal management system, the second flow passage of the first heat exchanger 20 is in communication with the fifth heat exchanger 202, the second flow passage of the first heat exchanger 20 is not in communication with the fourth heat exchanger 201, the first flow passage of the first heat exchanger 20 is in communication with both the first cooling branch and the second cooling branch, i.e. the first flow passage of the first heat exchanger 20 is in communication with the second heat exchanger 32 via the first throttling element 52, and the first flow passage of the first heat exchanger 20 is in communication with the third heat exchanger 31 via the second throttling element 51. In the second dehumidification mode of the thermal management system, heat of the thermal management system is released through the fifth heat exchanger 202 and cold of the thermal management system is released through the second heat exchanger 32 and the third heat exchanger 31. In the third dehumidification mode of the thermal management system, the second flow passage of the first heat exchanger 20 is in communication with the fifth heat exchanger 202, the second flow passage of the first heat exchanger 20 is not in communication with the fourth heat exchanger 201, the first flow passage of the first heat exchanger 20 is in communication with the first cooling branch, i.e., the first flow passage of the first heat exchanger 20 is in communication with the second heat exchanger 32 through the first throttling element 52; the first flow passage of the first heat exchanger 20 and the second cooling branch are not in communication, and the first flow passage of the first heat exchanger 20 is not in communication with the third heat exchanger 31 through the second throttling element 51. In the third dehumidification mode of the thermal management system, heat from the thermal management system is released through the fifth heat exchanger 202 and cold from the thermal management system is released through the second heat exchanger 32.
In this embodiment, the first cooling branch and the second cooling branch of the refrigerant system are arranged in parallel, compared with the serial arrangement of the first cooling branch and the second cooling branch, the flow resistance of the refrigerant can be reduced, whether the refrigerant enters the first cooling branch or the second cooling branch to participate in heat exchange can be controlled independently, and the first refrigerant system comprises the branch where the fourth heat exchanger is located and the branch where the fifth heat exchanger is located, so that the refrigerant enters the branch where the fourth heat exchanger is located and the branch where the fifth heat exchanger is located can be controlled independently to participate in heat exchange. The two branches of the refrigerant system are arranged in parallel and the two branches of the first coolant system are arranged in parallel, and the thermal management system is relatively simple in structure and easy to control. In this embodiment, the refrigerant system may further include an accumulator 40, and the accumulator 40 is in communication with the outlet of the first flow passage of the first heat exchanger 20, or alternatively, the outlet of the first flow passage of the first heat exchanger 20 can be in communication with the first cooling branch and the second cooling branch through the accumulator 40.
Please refer to fig. 2. The heat management system comprises a sixth heat exchanger 33, the sixth heat exchanger 33 comprises two flow channels, namely a first flow channel and a second flow channel, wherein the first flow channel of the sixth heat exchanger 33 is a refrigerant flow channel, the second flow channel of the sixth heat exchanger 33 is a cooling liquid flow channel, the refrigerant system comprises a third cooling branch, the third cooling branch comprises a third throttling element 53 and the first flow channel of the sixth heat exchanger 33, the compressor 10 can be communicated with the third cooling branch through the first flow channel of the first heat exchanger 20, and likewise, the third cooling branch can only comprise the first flow channel of the sixth heat exchanger 33, which is not described in detail. The coolant system comprises a second coolant system comprising a second pump 602, a battery cooler 601 and a second flow channel of the sixth heat exchanger 33, the second pump 602, the battery cooler and the second flow channel of the sixth heat exchanger 33 forming a circulation loop, the battery cooler 601 being capable of water cooling plates for regulating the battery temperature, the second pump 602 being used for driving a coolant to flow in the second coolant system. The refrigerant of the refrigerant system and the cooling liquid of the second cooling liquid system can exchange heat in the sixth heat exchanger 33. It is known that the third cooling branch is arranged in parallel with the first cooling branch and the second cooling branch. In this embodiment, the thermal management system further comprises a first cooling mode, in which the second flow channel of the first heat exchanger 20 may be in communication with the fourth heat exchanger 201 and/or the fifth heat exchanger 202, i.e. in the first battery cooling mode, the coolant heat in the first coolant system may be released to the ambient air through the fourth heat exchanger 201; or the heat of the cooling liquid in the first cooling liquid system can be released to the air conditioning box of the vehicle through the fifth heat exchanger 202 to adjust the indoor temperature of the vehicle; or simultaneously through the fourth heat exchanger 201 and the fifth heat exchanger 202; in the first cooling mode, the third throttling element 53 is opened, the second pump 602 of the second coolant system is opened, and the refrigerant absorbs the coolant heat of the second coolant system in the sixth heat exchanger 33 to lower the battery temperature. In other embodiments, the second coolant system further comprises a heater 603, the heater 603 being in serial communication with the battery cooler 601, the second flow path of the sixth heat exchanger 33, the heater 603 being for increasing the battery temperature. In this context, for a better understanding of the present invention, where the second pump 602 is one, the second pump is numbered 602 and the second pump is two, numbered 6021 and 6022, respectively.
In other embodiments, the thermal management system may not include the second coolant system, the sixth heat exchanger may be an air-cooled heat exchanger, and the air flowing through the sixth heat exchanger 33 may be cooled, and then the air may flow to the heat generating device such as the battery, and the temperature of the heat generating device such as the battery may be reduced by air cooling.
Referring to fig. 3, the second coolant system includes a four-way reversing valve 604, where the four-way reversing valve 604 includes four ports, that is, a first port, a second port, a third port and a fourth port, the four-way reversing valve 604 includes a first operating state and a second operating state, in the first operating state of the four-way reversing valve 604, correspondingly, the second coolant system is in the first operating state, the first port of the four-way reversing valve 604 is communicated with the second port of the four-way reversing valve, and the third port of the four-way reversing valve 604 is communicated with the fourth port of the four-way reversing valve; in the second operating state of the four-way reversing valve, the second coolant system is in the second operating state accordingly, the first port of the four-way reversing valve 604 is in communication with the third port of the four-way reversing valve, and the second port of the four-way reversing valve 604 is in communication with the fourth port of the four-way reversing valve. The second coolant system comprises a first branch and a second branch, wherein the first branch comprises a second pump 6021, a battery cooler 601 and a second flow path of the sixth heat exchanger 33, and the second pump 6021, the battery cooler 601 and the second flow path of the sixth heat exchanger 33 are in serial communication. The second branch circuit comprises a motor cooler 605 and another second pump 602, the motor cooler 605 and the other second pump 6022 are communicated in series, a first port of the first branch circuit is communicated with a first port of the four-way reversing valve 604, a second port of the first branch circuit is communicated with a second port of the four-way reversing valve 604, a first port of the second branch circuit is communicated with a third port of the four-way reversing valve 604, a second port of the second branch circuit is communicated with a fourth port of the four-way reversing valve 604, in a first working state of the four-way reversing valve, a first branch circuit of the second cooling liquid system forms a circulation loop, and the second branch circuit forms a circulation loop, and the two circulation loops can independently operate. In the second working state of the four-way reversing valve 604, the first port of the first branch is communicated with the first port of the second branch, the second port of the first branch is communicated with the second port of the second branch, the first branch and the second branch are communicated in series to form a circulation loop, and at this time, the second flow passage of the sixth heat exchanger 33 is communicated with both the motor cooler and the battery cooler.
Referring to fig. 3, the cooling fluid system further includes a first bypass line 101 and a second bypass line 102, and the second cooling fluid system can be communicated with the first cooling fluid system through the first bypass line 101 and the second bypass line 102, so that the cooling fluid of the first cooling fluid system and the cooling fluid of the second cooling fluid system can be exchanged, and finally, the purpose of heat exchange is achieved. Specifically, the second coolant system includes a second three-way valve 607, a first port of the second three-way valve 607 communicates with a first port of the second branch, a second port of the second three-way valve 607 communicates with one port of the fourth heat exchanger 201 through the first bypass line 101, a third port of the second three-way valve 607 communicates with a third port of the four-way reversing valve 604, and a second port of the second branch 102 communicates with another port of the fourth heat exchanger 201 through the second bypass line 102. When the temperature of the motor is low and the refrigerant system is not required to be started, the first port of the second three-way valve 607 is communicated with the second port of the second three-way valve 607, and the first port of the second three-way valve 607 is not communicated with the third port of the second three-way valve 607, so that the fourth heat exchanger 201, the other second pump 6022 and the motor cooler form a circulation loop, the heat of the motor can be released into the air through the fourth heat exchanger 201, the temperature of the motor is reduced under the condition that the refrigerant system is not started, and the energy is saved. Of course, the second bypass line may also be communicated with the fifth heat exchanger 202 through the first bypass line and the second bypass line, which will not be described in detail, and the heat of the motor may be released to the air conditioning box through the fifth heat exchanger 202, so as to adjust the temperature in the vehicle room, and heat the vehicle room by using the waste heat generated by the motor, thereby being beneficial to waste heat utilization and energy saving. in addition, the second branch may also be communicated with the second flow passage of the first heat exchanger 20 through the first bypass line and the second bypass line, and the heat-absorbing coolant enters the second coolant system through the first bypass line and the second bypass line to raise the temperature of the motor. Likewise, the second three-way valve 607 is disposed in the first branch, and the first branch may also be communicated with the fourth heat exchanger or the fifth heat exchanger through the first bypass line and the second bypass line to reduce the temperature of the battery, which will not be described in detail. It is known that the second port and the third port of the second three-way valve are controlled to be communicated, so that the first port and the third port of the second three-way valve are not communicated, and the heat of the battery can be released into the air through the fourth heat exchanger 201. referring to fig. 4, the thermal management system includes a four-way valve 203', wherein the four-way valve 203' includes four ports, the four-way valve 203' includes a first operation state and a second operation state, in the first operation state of the four-way valve 203', the first port of the four-way valve 203' can be in communication with at least one of the second port, the third port and the fourth port of the four-way valve 203', and in the second operation state of the four-way valve 203', the third port of the four-way valve 203' can be in communication with at least one of the second port, the first port and the fourth port of the four-way valve 203 '. In the present embodiment, the first port of the four-way valve 203' communicates with one port of the second flow passage of the first heat exchanger 20, the second port of the four-way valve 203' communicates with one port of the fourth heat exchanger 201, the fourth port of the four-way valve 203' communicates with one port of the fifth heat exchanger 202, the third port of the four-way valve 203' communicates with the second cooling liquid system through the first bypass line 101, specifically, the third port of the four-way valve 203' communicates with the outlet of the second pump 602 through the first bypass line 101, and the second bypass line 102 communicates with the other port of the battery cooler 601. In the first working state of the four-way valve 203', the cooling liquid in the second flow channel of the first heat exchanger 20 can enter at least one of the branch circuit where the fourth heat exchanger 201 is located, the branch circuit where the fifth heat exchanger 202 is located and the second cooling liquid system, so as to increase the temperature of the corresponding heat exchanger; the cooling liquid of the battery cooler can enter at least one of the branch circuit of the fourth heat exchanger and the branch circuit of the fifth heat exchanger, and the heat is released through the fourth heat exchanger or the fifth heat exchanger so as to reduce the temperature of the battery.
The thermal management system includes a first cooling mode, a second cooling mode, and a heating mode in addition to the heating mode, the cooling mode, and the dehumidification mode described above. The cooling mode described herein refers to cooling of heat generating devices such as a battery and a motor. In the first cooling mode, the second flow passage of the first heat exchanger 20 is communicated with the fifth heat exchanger 202 and/or the fourth heat exchanger 201, the third throttling element 53 is opened, the second pump 602 is opened, at this time, the second cooling liquid system is operated, heat in the second cooling liquid system is absorbed by the refrigerant flowing through the first flow passage of the sixth heat exchanger 33, after the heat absorbed by the refrigerant circulates in the cooling liquid system, the heat absorbed by the refrigerant is released to the cooling liquid of the first cooling liquid system in the first heat exchanger, and then the heat is released in the fourth heat exchanger and/or the fifth heat exchanger, so that the heat generating equipment such as a battery or a motor can be cooled.
In the second cooling mode, the compressor 10 is turned off, the second coolant system communicates with the branch of the fourth heat exchanger 201 and/or the branch of the fifth heat exchanger 202 via the first and second bypass lines, and the second pump 602 is turned on. At this time, the cooling liquid in the second cooling liquid system enters the fourth heat exchanger 201 and/or the fifth heat exchanger 202 through the first bypass pipeline and the second bypass pipeline, and then releases heat in the fourth heat exchanger 201 and/or the fifth heat exchanger 202 so as to cool heating equipment such as a battery or a motor.
In the heating mode of the thermal management system, the compressor 10 is started, the second throttling element 51 is started, the first throttling element 52 and the third throttling element 53 are closed, the second flow passage of the first heat exchanger 20 is communicated with the second cooling liquid system through the first bypass pipeline 101 and the second bypass pipeline 102, and cooling liquid enters the second cooling liquid system through the first bypass pipeline 101 and the second bypass pipeline 102 after absorbing heat in the second flow passage of the first heat exchanger 20 so as to improve the temperature of the battery, the motor and other equipment.
It should be noted that: although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the present invention may be modified or equivalent thereto without departing from the spirit and scope of the invention, and all such modifications and improvements thereof are intended to be included within the scope of the appended claims.
Claims (7)
1. The heat management system comprises a refrigerant system and a cooling liquid system, wherein the refrigerant of the refrigerant system and the cooling liquid of the cooling liquid system are isolated from each other and do not circulate, the heat management system comprises a first heat exchanger, the first heat exchanger comprises two flow passages, the refrigerant system comprises a compressor, a throttling element, a first flow passage of the first heat exchanger, a second heat exchanger and a third heat exchanger, a branch where the second heat exchanger is located and a branch where the third heat exchanger is located are arranged in parallel, the compressor is communicated with the first flow passage of the first heat exchanger, and the first flow passage of the first heat exchanger can be communicated with the branch where the second heat exchanger is located and/or the branch where the third heat exchanger is located;
The cooling liquid system comprises a first cooling liquid system, the first cooling liquid system comprises a second flow passage of the first heat exchanger, at least one first pump, a fourth heat exchanger and a fifth heat exchanger, the first cooling liquid system can exchange heat with the refrigerant system in the first heat exchanger, a branch where the fourth heat exchanger is located and a branch where the fifth heat exchanger is located are arranged in parallel, the second flow passage of the first heat exchanger can be communicated with the fourth heat exchanger and/or the fifth heat exchanger, and the first pump can drive cooling liquid of the first cooling liquid system to flow;
The second heat exchanger and the fifth heat exchanger are arranged on an air conditioning box of the vehicle;
the thermal management system comprises a heating mode, a refrigerating mode and a dehumidifying mode; in a heating mode of the thermal management system, the second flow passage of the first heat exchanger is communicated with the fifth heat exchanger, and the first flow passage of the first heat exchanger is communicated with the third heat exchanger;
In a refrigeration mode of the thermal management system, the second flow passage of the first heat exchanger is communicated with the fourth heat exchanger, and the first flow passage of the first heat exchanger is communicated with the second heat exchanger;
In a dehumidification mode of the thermal management system, the second flow passage of the first heat exchanger is communicated with the fifth heat exchanger, the second flow passage of the first heat exchanger is communicated with the fourth heat exchanger or the first flow passage of the first heat exchanger is communicated with the third heat exchanger, and the first flow passage of the first heat exchanger is communicated with the second heat exchanger;
The heat management system comprises a sixth heat exchanger, the sixth heat exchanger comprises two flow channels, the refrigerant system further comprises a first flow channel of the sixth heat exchanger, and a branch circuit where the first flow channel of the sixth heat exchanger is located is parallel to a branch circuit where the second heat exchanger is located and a branch circuit where the third heat exchanger is located.
2. The thermal management system of claim 1, wherein the refrigerant system comprises a reservoir in communication with an outlet of the first flow passage of the first heat exchanger; the compressor can be communicated with the first flow passage of the sixth heat exchanger through the first flow passage of the first heat exchanger;
The coolant system includes a second coolant system including at least one second pump, a battery cooler, and a second flow path of the sixth heat exchanger.
3. The thermal management system of claim 2, wherein said second coolant system comprises two of said second pumps, said second coolant system comprising a first leg and a second leg, said first leg comprising a second flow path of one of said second pumps, a battery cooler, and said sixth heat exchanger, said second leg comprising a motor cooler, another of said second pumps, said motor cooler in serial communication with another of said second pumps; the second cooling liquid system further comprises a four-way reversing valve, the four-way reversing valve comprises four ports, a first port and a second port of the four-way reversing valve are respectively communicated with two ports of the first branch, and a third port and a fourth port of the four-way reversing valve are respectively communicated with two ports of the second branch;
the second cooling liquid system comprises a first working state and a second working state, in the first working state, a first port of the four-way reversing valve is communicated with the second port, a third port of the four-way reversing valve is communicated with the fourth port, and the first branch and the second branch form two mutually independent loops; in the second working state, a first port of the four-way reversing valve is communicated with the third port, a second port of the four-way reversing valve is communicated with the fourth port, and the first branch and the second branch are connected in series to form a loop.
4. The thermal management system of claim 3, wherein the coolant system further comprises a first bypass line and a second bypass line, one end of the first bypass line and one end of the second bypass line being in communication with the first coolant system, the other end of the first bypass line and the second bypass line being in communication with the second coolant system, the second coolant system being capable of communicating with the first coolant system through the first bypass line and the second bypass line.
5. The thermal management system of claim 4, wherein the coolant system comprises a first three-way valve comprising three ports, the first port of the second branch, the third port of the four-way reversing valve, and the first port of the first bypass line being in communication with the three ports of the first three-way valve, respectively; the second port of the first bypass line is in communication with one port of the fourth heat exchanger or with one port of the fifth heat exchanger or with the second flow path of the first heat exchanger; the second port of the second branch is communicated with one port of the fourth heat exchanger or one port of the fifth heat exchanger or the second flow passage of the first heat exchanger through the second bypass pipeline.
6. The thermal management system of claim 4, wherein the coolant system comprises a four-way valve comprising four ports, the second flow passage of the first heat exchanger, the branch in which the fourth heat exchanger is located, the branch in which the fifth heat exchanger is located, and the first bypass passage are respectively in communication with the four ports of the four-way valve;
the second flow passage of the first heat exchanger can be communicated with at least one of a branch passage where the fourth heat exchanger is located, a branch passage where the fifth heat exchanger is located and the first bypass pipeline through the four-way valve;
And/or the second cooling liquid system can be communicated with at least one of a branch circuit where the fourth heat exchanger is located, a branch circuit where the fifth heat exchanger is located and a second flow passage of the first heat exchanger through the four-way valve.
7. The thermal management system of any of claims 4-6, wherein the refrigerant system comprises a first cooling leg, a second cooling leg, and a third cooling leg, the first cooling leg comprising a first throttling element and the second heat exchanger, the second cooling leg comprising a second throttling element and the third heat exchanger, the third cooling leg comprising a third throttling element and a first flow passage of the sixth heat exchanger, the thermal management system comprising a first cooling mode in which the second flow passage of the first heat exchanger communicates with the leg in which the fifth heat exchanger is located and/or with the leg in which the fourth heat exchanger is located, the third throttling element being open, the second pump being open;
In the second cooling mode, the compressor is closed, the second cooling liquid system is communicated with a branch where the fourth heat exchanger is located and/or a branch where the fifth heat exchanger is located through the first bypass pipeline and the second bypass pipeline, and the second pump is opened;
The thermal management system further includes a heating mode in which the compressor is on, the second throttling element is on, the first throttling element and the third throttling element are off, and the second flow passage of the first heat exchanger is communicated with the second coolant system through the first bypass line and the second bypass line.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102275521A (en) * | 2010-06-04 | 2011-12-14 | 特斯拉电机公司 | Thermal management system with dual mode coolant loops |
| CN104641184A (en) * | 2012-07-09 | 2015-05-20 | 贝利莫控股公司 | Method for operating a heat exchanger and HVAC installation for implementing the method |
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| CN107639993B (en) * | 2016-07-21 | 2021-12-14 | 杭州三花研究院有限公司 | Thermal management system |
| CN107639992B (en) * | 2016-07-21 | 2022-05-20 | 杭州三花研究院有限公司 | Thermal management system |
| CN109900023B (en) * | 2017-12-08 | 2021-09-03 | 杭州三花研究院有限公司 | Thermal management system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102275521A (en) * | 2010-06-04 | 2011-12-14 | 特斯拉电机公司 | Thermal management system with dual mode coolant loops |
| CN104641184A (en) * | 2012-07-09 | 2015-05-20 | 贝利莫控股公司 | Method for operating a heat exchanger and HVAC installation for implementing the method |
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