CN118238582A - Thermal management system - Google Patents
Thermal management system Download PDFInfo
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- CN118238582A CN118238582A CN202410502381.7A CN202410502381A CN118238582A CN 118238582 A CN118238582 A CN 118238582A CN 202410502381 A CN202410502381 A CN 202410502381A CN 118238582 A CN118238582 A CN 118238582A
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- heat exchanger
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- compressor
- throttling device
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- 239000003507 refrigerant Substances 0.000 claims abstract description 151
- 239000000110 cooling liquid Substances 0.000 claims abstract description 66
- 239000012530 fluid Substances 0.000 claims abstract description 60
- 238000010438 heat treatment Methods 0.000 claims description 31
- 238000001816 cooling Methods 0.000 claims description 21
- 239000002826 coolant Substances 0.000 claims description 13
- 238000007791 dehumidification Methods 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 238000011144 upstream manufacturing Methods 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 description 35
- 238000004891 communication Methods 0.000 description 12
- 238000004378 air conditioning Methods 0.000 description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010257 thawing Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 238000000926 separation method Methods 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
- B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
- B60H1/00278—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit for the battery
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00321—Heat exchangers for air-conditioning 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
- B60H1/00357—Air-conditioning arrangements specially adapted for particular vehicles
- B60H1/00385—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell
- B60H1/00392—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell for electric vehicles having only electric drive means
-
- 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
- B60H1/00485—Valves for air-conditioning devices, e.g. thermostatic valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
- B60H2001/00307—Component temperature regulation using a liquid flow
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The application relates to the technical field of heat exchange, in particular to a thermal management system, which comprises: the first heat exchanger, first heat exchanger includes first heat exchange portion and second heat exchange portion, and the refrigerant system includes: the device comprises a compressor, a first indoor heat exchanger, a first throttling device, a second throttling device, an outdoor heat exchanger and a first heat exchange part, wherein the first throttling device and the second throttling device are two-way throttles; the cooling liquid system comprises a battery heat exchange assembly, a second heat exchange part, a fluid driving device and a second heat exchange part, and the refrigerant of the refrigerant system and the cooling liquid of the cooling liquid system can exchange heat through the first heat exchanger. The first throttling device and the second throttling device of the thermal management system are two-way throttling valves, so that the number of the valves and connecting pipelines of the thermal management system are reduced, the structure is simpler, and when the thermal management system operates, the first throttling device and the second throttling device are positioned at the upstream end or the downstream end of each branch according to different working conditions, and the temperature of the environment in a carriage and the temperature of a battery heat exchange assembly can be regulated and controlled simultaneously.
Description
Technical Field
The application relates to the technical field of heat exchange, in particular to a thermal management system.
Background
An air conditioning system of a vehicle (such as an electric automobile) can regulate the environmental temperature in a carriage through thermal management, a related thermal management system comprises a refrigerant system and a cooling liquid system, the cooling liquid system comprises a battery heat exchange assembly, the cooling liquid system and the refrigerant system can exchange heat through a heat exchanger, and the battery heat exchange assembly can be thermally managed while the environmental temperature in the carriage is regulated, but the system structure is relatively complex.
Disclosure of Invention
In view of the above problems, the present application provides a thermal management system with a simple structure, which has a function of performing thermal management on a battery heat exchange assembly.
In order to achieve the above purpose, the present application adopts the following technical scheme:
A thermal management system, comprising: the first heat exchanger comprises a first heat exchange part and a second heat exchange part;
the heat management system comprises a refrigerant system and a cooling liquid system, wherein the refrigerant system comprises a compressor, a first indoor heat exchanger, a first throttling device, a second throttling device, an outdoor heat exchanger and a first heat exchange part, and the first throttling device and the second throttling device are two-way throttling valves; the cooling liquid system comprises a battery heat exchange assembly, a fluid driving device and the second heat exchange part, and the refrigerant of the refrigerant system and the cooling liquid of the cooling liquid system can exchange heat through the first heat exchanger;
The refrigerant system comprises a first branch and a second branch, the outdoor heat exchanger comprises a first port of the outdoor heat exchanger and a second port of the outdoor heat exchanger, the first indoor heat exchanger and the first throttling device are connected to the first branch, the first throttling device is connected between the first port of the outdoor heat exchanger and the first indoor heat exchanger, the first heat exchange part and the second throttling device are connected to the second branch, and the second throttling device is connected between the first port of the outdoor heat exchanger and the first heat exchange part;
One end of the first branch and one end of the second branch can be communicated with a first port of the outdoor heat exchanger, a second port of the outdoor heat exchanger is communicated with an outlet of the compressor, and the other end of the first branch and the other end of the second branch can be communicated with an inlet of the compressor; or, the second port of the outdoor heat exchanger is communicated with the inlet of the compressor, and the other end of the first branch and the other end of the second branch can be communicated with the outlet of the compressor.
The heat management system comprises the first throttling device and the second throttling device, wherein the first throttling device is arranged on the first branch, the second throttling device is arranged on the second branch, and the first throttling device and the second throttling device are two-way throttling valves, so that the number of valves and connecting pipelines of the heat management system are reduced, the structure is simpler, the first throttling device and the second throttling device are arranged at the upstream end or the downstream end of each branch according to different working conditions when the heat management system operates, and the temperature of the environment in a carriage and the temperature of a battery heat exchange assembly can be regulated and controlled simultaneously.
Drawings
FIG. 1 is a heating mode of a thermal management system according to an exemplary embodiment of the present application;
FIG. 2 is a cooling mode of a thermal management system according to an exemplary embodiment of the present application;
FIG. 3 is a defrost mode of a thermal management system according to an exemplary embodiment of the application;
FIG. 4 is a heating and dehumidification mode of a thermal management system of an exemplary embodiment of the present application;
FIG. 5 is a battery cooling mode of a thermal management system according to another exemplary embodiment of the application;
fig. 6 is a schematic diagram of the working principle of the heat management system of the present application in which the battery dissipates heat while the cabin heats;
FIG. 7 is a cooling mode of a thermal management system according to yet another exemplary embodiment of the present application;
fig. 8 is a cooling mode of a thermal management system according to yet another exemplary embodiment of the present application.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the application. Rather, they are merely examples of apparatus and methods consistent with aspects of the application as detailed in the accompanying claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this specification 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.
It should be understood that the terms first, second and the like used in the description and the claims do not denote any order, quantity or importance, but rather are used to distinguish one element from another. Likewise, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one; "plurality" means two and more than two. Unless otherwise indicated, the terms "front," "rear," "lower," and/or "upper" and the like are merely for convenience of description and are not limited to one location or one spatial orientation. The word "comprising" or "comprises", and the like, means that elements or items appearing before "comprising" or "comprising" are encompassed by the element or item recited after "comprising" or "comprising" and equivalents thereof, and that other elements or items are not excluded.
The following describes the thermal management system according to an exemplary embodiment of the present application in detail with reference to the accompanying drawings, where the thermal management system provided in the embodiment of the present application may be used in an electric vehicle. The features of the examples and embodiments described below may be supplemented or combined with one another without conflict.
Referring to FIG. 1, a thermal management system according to an embodiment of the present application includes: a compressor 1, a fluid switching device 9, a first indoor heat exchanger 2, a first throttling device 3, a second throttling device 4, an outdoor heat exchanger 5, a first heat exchanger 6, a battery heat exchange assembly 7, a fluid driving device 8 and a gas-liquid separator 13.
The first heat exchanger 6 includes a first heat exchange portion 61 and a second heat exchange portion 62 that are capable of heat exchange, the first heat exchange portion 61 and the second heat exchange portion 62 are each provided with a flow passage, and the flow passages of the first heat exchange portion 61 and the second heat exchange portion 62 are isolated from each other and are not communicated. The first heat exchanger 6 may be a plate heat exchanger or a shell-and-tube liquid-cooled heat exchanger, and when the refrigerant adopts a high-pressure refrigerant (such as CO2 refrigerant), the first heat exchanger 6 is a shell-and-tube heat exchanger, which includes a plurality of parallel micro-channel flat tubes, two collecting pipes connected to opposite ends of the micro-channel flat tubes, and a shell surrounding the micro-channel flat tubes and located between the two collecting pipes. The first heat exchanging portion 61 is used for circulating a refrigerant, and the second heat exchanging portion 62 is used for circulating a coolant. The refrigerant may be R134A or carbon dioxide or other heat exchange medium. The cooling liquid may be a mixed solution of ethanol and water, and the fluid driving device 8 may be a water pump.
Each component of the thermal management system is connected through a pipeline to form two large flow paths, namely a refrigerant system and a cooling liquid system, wherein the flow path of the first heat exchange part 61 is connected to the refrigerant system, the flow path of the second heat exchange part 62 is connected to the cooling liquid system, and the refrigerant system comprises: the compressor 1, the first indoor heat exchanger 2, the first throttling device 3, the second throttling device 4 and the outdoor heat exchanger 5, wherein the first throttling device 3 and the second throttling device 4 are two-way throttling valves; the cooling liquid system comprises a battery heat exchange assembly 7 and a fluid driving device 8. The refrigerant of the refrigerant system and the coolant of the coolant system exchange heat with each other through the first heat exchange portion 61 and the second heat exchange portion 62, respectively.
The refrigerant system further comprises a first branch a and a second branch b arranged in parallel, the first branch a comprises a first end a1 of the first branch and a second end a2 of the first branch, the second branch b comprises a first end b1 of the second branch and a second end b2 of the second branch, the outdoor heat exchanger 5 comprises a first port 51 of the outdoor heat exchanger and a second port 52 of the outdoor heat exchanger, and the second end a2 of the first branch and the second end b2 of the second branch are connected with the first port 51 of the outdoor heat exchanger through pipelines. The first indoor heat exchanger 2 and the first throttling device 3 are connected to the first branch passage a, the first throttling device 3 is connected between the first port 51 of the outdoor heat exchanger and the first indoor heat exchanger 2, the first heat exchanging part 61 and the second throttling device 4 are connected to the second branch passage b, and the second throttling device 4 is connected between the first port 51 of the outdoor heat exchanger and the first heat exchanging part 61.
In some conditions, as shown in fig. 2, the second port 52 of the outdoor heat exchanger is in communication with the outlet of the compressor 1 via a pipe, and the first end a1 of the first branch and the first end b1 of the second branch are both in communication with the inlet of the compressor 1 via a pipe. In other conditions, as shown in fig. 1, the second port 52 of the outdoor heat exchanger is in communication with the inlet of the compressor 1 via a conduit, and the first end a1 of the first branch and the first end b1 of the second branch are both in communication with the outlet of the compressor 1 via a conduit. The first end a1 of the first branch and the first end b1 of the second branch, and the second end a2 of the first branch and the second end b2 of the second branch can be connected by a tee pipe. In some embodiments, a plurality of stop valves, or three-way valves or a plurality of valve assemblies may be disposed between the second port 52 of the outdoor heat exchanger, the inlet and outlet of the compressor 1, the two ends of the first branch a, and the two ends of the second branch b, so as to control the flow direction of the refrigerant compressed by the compressor 1.
In the present embodiment, the thermal management system switches the flow direction of the refrigerant among the compressor 1, the outdoor heat exchanger 5, the first branch a, and the second branch b by the fluid switching device 9, and the fluid switching device 9 may be a four-way valve. Specific: the second port 52 of the outdoor heat exchanger is connected with the fluid switching device 9 through a pipeline, the fluid switching device 9 comprises a first interface 91, a second interface 92, a third interface 93 and a fourth interface 94, the first interface 91 is connected with the outlet of the compressor 1 through a pipeline, the first end a1 of the first branch and the first end b1 of the second branch are connected with the second interface 92 through pipelines, the third interface 93 is connected with the inlet of the gas-liquid separator 13 through a pipeline, the outlet of the gas-liquid separator 13 is connected with the inlet of the compressor 1 through a pipeline, and the fourth interface 94 is connected with the second port 52 of the outdoor heat exchanger through a pipeline. In some embodiments, the gas-liquid separator 13 may not be provided, and the third port 93 is directly connected to the inlet of the compressor 1 through a pipe.
The fluid switching means 9 comprises a first operating mode and a second operating mode; in the first mode of operation, the first interface 91 communicates with the second interface 92 and the third interface 93 communicates with the fourth interface 94. In the second mode of operation, the first interface 91 communicates with the fourth interface 94 and the second interface 92 communicates with the third interface 93.
The thermal management system of the present embodiment has a plurality of operation modes including a heating mode, a cooling mode, a heating and dehumidifying mode, a defrosting mode, and a battery heat dissipation mode. In different modes of operation, the outdoor heat exchanger 5 may be used as an evaporator or a condenser. The first indoor heat exchanger 2 can exchange heat with air entering the carriage, the first indoor heat exchanger 2 is arranged in an air conditioning box, and a blower can be arranged in the air conditioning box for conveying air. The first indoor heat exchanger 2 can be used as a condenser in a heating mode and as an evaporator in a cooling mode, thereby playing a role in adjusting the environment in the cabin.
When the ambient temperature is low, the vehicle may turn on the heating mode. As shown in fig. 1: in the heating mode: the second port 52 of the outdoor heat exchanger and the inlet of the gas-liquid separator 13 are communicated through a pipeline, and the first end a1 of the first branch and the first end b1 of the second branch are both communicated with the outlet of the compressor 1 through pipelines, namely, the fluid switching device 9 is in the first working mode. The compressor 1, the fluid switching device 9, the first indoor heat exchanger 2, the first throttle device 3, the outdoor heat exchanger 5, and the gas-liquid separator 13 are connected to form a refrigerant circuit. The compressor 1, the fluid switching device 9, the first heat exchanging portion 61, the second throttle device 4, the outdoor heat exchanger 5, and the gas-liquid separator 13 are connected to form a refrigerant circuit. The battery heat exchange assembly 7, the second heat exchange part 62 and the fluid driving device 8 are communicated to form a cooling liquid loop, and the cooling liquid absorbs heat of the refrigerant through the first heat exchanger 6.
The high-temperature refrigerant compressed by the compressor 1 is divided into two paths through the fluid switching device 9, one path flows to the first branch a, the other path flows to the second branch b, the refrigerant enters the first indoor heat exchanger 2 connected to the first branch a, the first indoor heat exchanger 2 is used as a condenser, and the refrigerant exchanges heat with air, so that the air entering the carriage is heated, and the purpose of carriage heating is achieved. The refrigerant enters the first heat exchange part 61 connected to the second branch b, the refrigerant in the first heat exchange part 61 exchanges heat with the cooling liquid in the second heat exchange part 62, the refrigerant with higher temperature transfers heat to the cooling liquid, the cooling liquid is heated, and the heated cooling liquid flows to the battery heat exchange assembly 7 under the drive of the fluid driving device 8, so that the battery is heated. The refrigerant of the first branch a is throttled and cooled by the first throttling device 3, the refrigerant of the second branch b is throttled and cooled by the second throttling device 4, the two paths of refrigerant are converged and then flow to the outdoor heat exchanger 5, the low-temperature refrigerant in a gas-liquid two-phase state absorbs the heat of the air in the outdoor heat exchanger 5, and finally the low-temperature refrigerant returns to the compressor 1, and the cycle is performed. In some embodiments, the outdoor heat exchanger 5 includes two connection ports, and the two refrigerant paths may also join directly in the outdoor heat exchanger 5. The refrigerant absorbs heat of air in the outdoor heat exchanger 5 and finally flows to the gas-liquid separator 13, and the gas-liquid separator 13 is used for separating the refrigerant in a gas-liquid two-phase state into a gaseous refrigerant and a liquid refrigerant. In some embodiments, when the liquid storage tank is disposed in the compressor 1 or the refrigerant absorbed by the outdoor heat exchanger 5 is in a gaseous state, the gas-liquid separator 13 may not be disposed, and the refrigerant may directly return to the compressor 1.
In some embodiments, the first end a1 of the first branch and the first end b1 of the second branch may be connected to the second port 92 of the fluid switching device 9 through a three-way valve, which may be a three-way proportional valve, so that the flow rates of the two-way refrigerant may be adjusted. For example, when the flow rate of the refrigerant entering the first branch a is high, the heat-producing effect of the cabin is preferentially ensured, and when the flow rate of the refrigerant entering the second branch b is high, the working performance of the battery is preferentially ensured.
The thermal management system provided by the application can heat the battery in a heating mode to ensure the performance of the battery, ensure the high-efficiency output of the battery, improve the endurance mileage, rapidly heat the carriage environment and improve the experience of users.
In some embodiments, when the second throttling means 4 is closed and the refrigerant does not flow to the second branch b, only the cabin can be heated without heating the battery.
When the environment temperature is higher, the thermal management system can be in a refrigerating mode, the battery is cooled while the carriage environment is refrigerated, and the battery is prevented from being higher in temperature. As shown in fig. 2, in the cooling mode: the second port 52 of the outdoor heat exchanger is in communication with the outlet of the compressor 1 via a pipe, and the first end a1 of the first branch and the first end b1 of the second branch are both in communication with the inlet of the gas-liquid separator 13 via a pipe, i.e. the fluid switching device 9 is in the second mode of operation. The compressor 1, the fluid switching device 9, the outdoor heat exchanger 5, the first throttle device 3, the first indoor heat exchanger 2, and the gas-liquid separator 13 are communicated to form a refrigerant circuit. The compressor 1, the outdoor heat exchanger 5, the second throttling device 4, the first heat exchanging portion 61, and the gas-liquid separator 13 are communicated to form a refrigerant circuit. The battery heat exchange assembly 7, the second heat exchange part 62 and the fluid driving device 8 are communicated to form a cooling liquid loop, and the refrigerant absorbs heat of the cooling liquid through the first heat exchanger 6.
The high-temperature refrigerant compressed by the compressor 1 flows to the outdoor heat exchanger 5 after passing through the fluid switching device 9, the temperature of the refrigerant is reduced after the refrigerant releases heat to the external environment through the outdoor heat exchanger 5, the cooled refrigerant is divided into two paths, one path flows to the first branch a, the other path flows to the second branch b, the two paths of refrigerant are respectively throttled by the first throttling device 3 and the second throttling device 4 and then cooled, the low-temperature refrigerant enters the first indoor heat exchanger 2 connected to the first branch a, the first indoor heat exchanger 2 is used as an evaporator and used for heat exchange between the refrigerant and air, and the refrigerant absorbs the heat of the air, so that the air entering the carriage is cooled, and the purpose of carriage refrigeration is achieved. The low-temperature refrigerant enters the first heat exchange part 61 connected to the second branch b, the refrigerant in the first heat exchange part 61 exchanges heat with the cooling liquid in the second heat exchange part 62, the refrigerant with lower temperature absorbs the heat of the cooling liquid, the cooling liquid is cooled, and the cooled cooling liquid flows to the battery heat exchange assembly 7 under the driving of the fluid driving device 8, so that the battery is cooled. The two paths of refrigerant are converged and then flow to the gas-liquid separator 13, and the refrigerant returns to the compressor 1 to be compressed again after gas-liquid separation, and thus the refrigerant circulates. In some embodiments, the two refrigerant paths may also merge directly into the gas-liquid separator 13.
In some embodiments, the second throttling means 4 may also be closed, and when the refrigerant does not flow to the second branch b, only the cabin is cooled, without cooling the battery.
In a low-temperature environment in winter, the outdoor heat exchanger 5 is easy to frost when the vehicle air conditioner runs for a long time, and the heat management system of the embodiment can defrost the outdoor heat exchanger 5. As shown in fig. 3, in the defrost mode: the second port 52 of the outdoor heat exchanger is connected to the outlet of the compressor 1 via a pipeline, the first end a1 of the first branch and the first end b1 of the second branch are connected to the inlet of the gas-liquid separator 13 via a pipeline, i.e. the fluid switching device 9 is in the second working mode, and the first throttling device 3 is closed.
The compressor 1, the outdoor heat exchanger 5, the second throttling device 4, the first heat exchanging portion 61, and the gas-liquid separator 13 are communicated to form a refrigerant circuit. The battery heat exchange assembly 7, the second heat exchange part 62 and the fluid driving device 8 are communicated to form a cooling liquid loop, and the refrigerant absorbs heat of the cooling liquid through the first heat exchanger 6.
The high-temperature refrigerant compressed by the compressor 1 enters the outdoor heat exchanger 5, and the heat is released to the surrounding environment through the heat exchange between the outdoor heat exchanger 5 and the air, so that the frost on the surface of the outdoor heat exchanger 5 is melted, and the aim of defrosting is achieved. The cooled refrigerant flows to the second branch b, is throttled and cooled by the second throttling device 4, and then is in the first heat exchange part 61 to absorb the heat of the high-temperature cooling liquid in the second heat exchange part 62. The heat of the cooling liquid comes from the redundant heat generated by long-time working of the battery, so that the embodiment can defrost by recovering the residual heat of the battery, fully utilize the electric quantity of the battery and improve the energy efficiency of the system.
Referring to fig. 4, the thermal management system according to another embodiment of the present application further includes a second indoor heat exchanger 10 and a third throttling device 11, the second indoor heat exchanger 10 and the third throttling device 11 are both disposed at the first branch a, and the third throttling device 11 is connected between the first indoor heat exchanger 2 and the second indoor heat exchanger 10, and the second indoor heat exchanger 10 is connected between the third throttling device 11 and the first throttling device 3.
As shown in fig. 4, the thermal management system further includes a heating and dehumidifying mode in which: the second port 52 of the outdoor heat exchanger and the inlet of the gas-liquid separator 13 are in communication via a pipe, the first end a1 of the first branch and the first end b1 of the second branch are both in communication with the outlet of the compressor 1 via a pipe, i.e. the fluid switching device 9 is in the first operating mode. The third throttling device 11 throttles the refrigerant system, and the compressor 1, the fluid switching device 9, the first indoor heat exchanger 2, the third throttling device 11, the second indoor heat exchanger 10, the first throttling device 3, the outdoor heat exchanger 5 and the gas-liquid separator 13 are communicated to form a refrigerant loop. The compressor 1, the first heat exchanging portion 61, the second throttling device 4, the outdoor heat exchanger 5, and the gas-liquid separator 13 are communicated to form a coolant circuit. The battery heat exchange assembly 7, the second heat exchange part 62 and the fluid driving device 8 are communicated to form a loop, and the cooling liquid absorbs heat of the refrigerant through the first heat exchanger 6.
The high-temperature refrigerant compressed by the compressor 1 is divided into two paths by the fluid switching device 9, wherein one path flows to the first branch a, and the other path flows to the second branch b. The refrigerant enters the first indoor heat exchanger 2 connected to the first branch circuit a, and the first indoor heat exchanger 2 is used as a condenser and is used for heat exchange with air, so that the air entering the compartment is heated, and the purpose of compartment heating is achieved. The refrigerant continuously flows to the third throttling device 11 after being cooled, enters the second indoor heat exchanger 10 after being throttled and cooled by the third throttling device 11, the second indoor heat exchanger 10 is used as an evaporator, the low-temperature refrigerant absorbs the heat of the air through the second indoor heat exchanger 10, so that the temperature of the air is reduced, water vapor in the air is discharged after being condensed, the humidity of the air is reduced, and the aim of dehumidification is achieved. At this time, the air passes through the second indoor heat exchanger 10 under the action of the blower and then passes through the first indoor heat exchanger 2, so that the air is cooled and the humidity of the air is reduced, and then is heated and conveyed into the carriage when passing through the first indoor heat exchanger 2, thereby achieving the purpose of heating and dehumidifying the carriage.
The other path of refrigerant enters the first heat exchange part 61 connected to the second branch b, the refrigerant in the first heat exchange part 61 exchanges heat with the cooling liquid in the second heat exchange part 62, the refrigerant with higher temperature transfers heat to the cooling liquid, so that the cooling liquid is heated, and the heated cooling liquid flows to the battery heat exchange assembly 7 under the driving of the fluid driving device 8, thereby realizing the heating and dehumidification of the carriage and the battery heating. The refrigerant of the first branch a is throttled and cooled by the first throttling device 3, the refrigerant of the second branch b is throttled and cooled by the second throttling device 4, and the two paths of refrigerant are converged and then flow to the outdoor heat exchanger 5. After passing through the gas-liquid separator 13, the mixture returns to the compressor 1 to be compressed again, and is circulated.
The heating and dehumidifying mode of the embodiment is suitable for the conditions of low ambient temperature and high humidity, such as rainy and snowy weather in winter, or the internal circulation mode of the vehicle used for a long time, so that the humidity of the environment in the carriage is high due to the respiration of passengers. Meanwhile, the battery can be heated in a heating and dehumidifying mode, so that the battery has a good working temperature in a low-temperature environment.
In some embodiments, the second throttling means 4 is closed, and when the refrigerant does not flow to the second branch b, only the cabin is heated and dehumidified, and the battery is not required to be heated.
The third throttling means 11 further comprises an all-pass mode, when the third throttling means 11 is in the all-pass mode:
The second port 52 of the outdoor heat exchanger and the inlet of the gas-liquid separator 13 are connected by a pipeline, and the first end a1 of the first branch and the first end b1 of the second branch are connected with the outlet of the compressor 1 by a pipeline, i.e. the fluid switching device 9 is in the first working mode. At this time, the heat management system is in a heating mode, and the compressor 1, the fluid switching device 9, the first indoor heat exchanger 2, the third throttling device 11, the second indoor heat exchanger 10, the first throttling device 3, the outdoor heat exchanger 5 and the gas-liquid separator 13 are communicated to form a refrigerant loop. The compressor 1, the fluid switching device 9, the first heat exchanging portion 61, the second throttle device 4, the outdoor heat exchanger 5, and the gas-liquid separator 13 are connected to form a refrigerant circuit. The battery heat exchange assembly 7, the second heat exchange part 62 and the fluid driving device 8 are communicated to form a cooling liquid loop, and the cooling liquid absorbs heat of the refrigerant through the first heat exchanger 6.
The working principle of the heating mode is different from that of the first embodiment in that: the refrigerant of the first branch a exchanges heat with air in the first indoor heat exchanger 2, and the air is heated. At this time, the third throttling device 11 does not perform the throttling function, and the refrigerant passes through the third throttling device 11 directly after the temperature of the refrigerant is reduced, and the temperature of the refrigerant is still higher than the temperature of the air, so that the refrigerant enters the second indoor heat exchanger 10 to exchange heat with the air again. It should be noted that, air passes through the second indoor heat exchanger 10 and then passes through the first indoor heat exchanger 2 under the action of the blower, so that air is preheated by the second indoor heat exchanger 10 and then is warmed up again by the first indoor heat exchanger 2, and the heating capacity of the whole system is improved by arranging two indoor condensers in series.
When the thermal management system is in the cooling mode, the second port 52 of the outdoor heat exchanger and the outlet of the compressor 1 are in communication via a pipe, the first end a1 of the first branch and the first end b1 of the second branch are both in communication with the inlet of the gas-liquid separator 13 via a pipe, i.e. the fluid switching device 9 is in the second operating mode. The compressor 1, the fluid switching device 9, the outdoor heat exchanger 5, the first throttle device 3, the second indoor heat exchanger 10, the third throttle device 11, the first indoor heat exchanger 2, and the gas-liquid separator 13 are connected to form a refrigerant circuit. The compressor 1, the fluid switching device 9, the outdoor heat exchanger 5, the second throttling device 4, the first heat exchanging portion 61 and the gas-liquid separator 13 are communicated to form a refrigerant loop, the battery heat exchanging assembly 7, the second heat exchanging portion 62 and the fluid driving device 8 are communicated to form a cooling liquid loop, and the refrigerant absorbs heat of the cooling liquid through the first heat exchanger 6.
The working principle of the above-described cooling mode is different from that of the first embodiment in that: the refrigerant of the first branch a exchanges heat with air in the second indoor heat exchanger 10 to absorb heat of the air, and the air temperature is lowered. At this time, the third throttling device 11 does not perform the throttling function, and the refrigerant directly passes through the third throttling device 11 after being warmed up, but the temperature of the refrigerant is still lower than the temperature of the air, so that the refrigerant enters the first indoor heat exchanger 2 to exchange heat with the air again, absorbs the heat of the air, and the air temperature is lowered again. It should be noted that, air passes through the second indoor heat exchanger 10 and then passes through the first indoor heat exchanger 2 under the action of the blower, so that air is cooled by the second indoor heat exchanger 10 and then passes through the first indoor heat exchanger 2 again, and the two indoor evaporators are connected in series, so that the refrigerating capacity of the whole system is improved. And the air cooling is affected by the heat emitted by the heat core body inside the air conditioning box. Therefore, an air conditioning case suitable for use in the thermal management system of the present application may not be provided with a hot and cold damper for insulating the thermal core.
A thermal management system according to yet another embodiment of the present application is shown in fig. 5, where the coolant system further includes a second heat exchanger 12, and the coolant system includes three parallel branches, namely a third branch c, a fourth branch d, and a fifth branch e. The second heat exchanger 12 is connected to the third branch c, the battery heat exchange assembly 7, the second heat exchange portion 62 and the fluid driving device 8 are connected in series to the fourth branch d, the second heat exchange portion 62 is connected between the battery heat exchange assembly 7 and the fluid driving device 8, the cooling liquid flows from the second heat exchange portion 62 to the battery heat exchange assembly 7 under the driving of the fluid driving device 8, the three branches are connected at the outlet end of the battery heat exchange assembly 7 through a three-way valve, and the other ends of the third branch c and the fifth branch e are connected to the inlet end of the fluid driving device 8. The system can select to make the cooling liquid flow to the second heat exchanger 12 or the second heat exchanging part 62 after passing through the battery heat exchanging assembly 7 by controlling the three-way valve of the cooling liquid system.
In other embodiments, the battery heat exchange assembly 7 and the fluid driving device 8 may also be disposed in the fifth branch e, and the battery heat exchange assembly 7 is disposed at the outlet end of the fluid driving device 8. The second heat exchanging portion 62 is connected to the fourth branch d, and the second heat exchanger 12 is connected to the third branch c. The three branches are connected with the outlet end of the battery heat exchange assembly 7 through a three-way valve. The coolant system can selectively flow the coolant to the second heat exchanger 12 or the second heat exchanging portion 62 after passing through the battery heat exchanging assembly 7 by controlling the three-way valve.
The thermal management system comprises a battery cooling mode, and in the battery cooling mode, the second heat exchanger 12, the battery heat exchange assembly 7 and the fluid driving device 8 are communicated to form a loop. After the battery is charged quickly to generate redundant heat, a battery heat dissipation mode can be started, and the temperature of the battery is reduced. At this time, the battery cooling mode only turns on the fluid driving device 8, and does not turn on the compressor 1. The cooling liquid system does not exchange heat with the refrigerant system, and the cooling liquid exchanges heat with air through the second heat exchanger 12, and the second heat exchanger 12 may be a low-temperature water tank.
In a low-temperature environment, after the heating mode or the heating and dehumidifying mode is started for a period of time, the working temperature of the battery is already satisfied, and heat is also generated when the battery works, so that the temperature of the battery is overhigh. At this time, the battery heat radiation mode can be started, and the compressor 1 can be started at the same time, so that the cabin can be heated. As shown in fig. 6, the second throttling device 4 is closed, the refrigerant does not pass through the first heat exchanging portion 61, and the refrigerant system and the coolant system do not exchange heat. The second port 52 of the outdoor heat exchanger is in communication with the inlet of the compressor 1 via a pipe, and the first end a1 of the first branch is in communication with the outlet of the compressor 1 via a pipe, i.e. the fluid switching device 9 is in the first mode of operation.
In the closed state of the second throttling means 4, the refrigerant flows to the first branch a. The compressor 1, the fluid switching device 9, the first indoor heat exchanger 2, the third throttling device 11, the second indoor heat exchanger 10, the first throttling device 3, the outdoor heat exchanger 5 and the gas-liquid separator 13 are communicated to form a loop. The refrigerant exchanges heat with air in the first indoor heat exchanger 2, and heats the air to heat the cabin. The third throttling device 11 can be controlled to throttle the refrigerant system as required, and the second indoor heat exchanger 10 is used as an evaporator to heat and dehumidify the cabin. Or the third throttling device 11 is in a conducting state, and the first indoor heat exchanger 2 and the second indoor heat exchanger 10 are used as indoor condensers, so that the heating effect of the carriage is improved.
The heat generated by the battery is transferred to the cooling liquid through the battery heat exchange assembly 7, the cooling liquid enters the second heat exchanger 12 and exchanges heat with air through the second heat exchanger 12, the temperature of the cooling liquid is reduced after the heat is transferred to the air, and the cooled cooling liquid finally returns to the battery heat exchange assembly 7, so that the cooling liquid circulates, and the purpose of radiating the battery is achieved.
As shown in fig. 7, the thermal management system of the present application may further include a third heat exchanger 14, the third heat exchanger 14 including a third heat exchanging portion 141 and a fourth heat exchanging portion 142 capable of exchanging heat. The third heat exchanging part 141 is connected between the inlet of the compressor 1 and the outlet of the gas-liquid separator 13, one end of the fourth heat exchanging part 142 is connected to the first port 51 of the outdoor heat exchanger, and one end of the first branch a and one end of the second branch b are both connected to the other end of the fourth heat exchanging part 142.
In the cooling mode, the refrigerant flows to the outdoor heat exchanger 5 first, the temperature is reduced after heat exchange with air, and then the refrigerant enters the fourth heat exchange portion 142, at this time, the temperature of the fourth heat exchange portion 142 is higher than that of the third heat exchange portion 141, so that the heat of the refrigerant in the fourth heat exchange portion 142 is transferred to the refrigerant in the third heat exchange portion 141, and the temperature of the refrigerant is further reduced before the refrigerant flows to the first branch a and the second branch b respectively, so that the refrigerant has a lower temperature after being throttled by the first throttling device 3 and the second throttling device 4 respectively, so that the refrigerant in the first branch a can absorb more heat of air in the first indoor heat exchanger 2 and the second indoor heat exchanger 10, the cooling effect is improved, the refrigerant in the second branch b absorbs more heat of the cooling liquid, and the battery cooling effect is improved.
As shown in fig. 8, in the heating mode, the refrigerant flows to the first indoor heat exchanger 2 and the first heat exchanging portion 61 through the four-way valve, the temperature of the refrigerant decreases after heat exchange with the air flowing through the air conditioning box, the cooled refrigerant enters the third throttling device 11 again, at this time, the third throttling device 11 may be in the all-pass mode, the refrigerant directly flows to the second indoor heat exchanger 10, the refrigerant releases heat again in the second indoor heat exchanger 10, the temperature of the refrigerant decreases again, and then the refrigerant is throttled again by the first throttling device 3. The air is heated through the second indoor heat exchanger 10 for the first time, and then is heated through the first indoor heat exchanger 2 again, and the temperature after the second heating is higher than that of the air after the first heating, so that the heating capacity of the thermal management system is improved. The temperature of the refrigerant in the first heat exchange portion 61 decreases after heat exchange with the coolant in the second heat exchange portion 62, and the coolant increases in temperature to heat the battery. The two refrigerant paths merge and flow to the fourth heat exchange portion 142, absorb the heat of the air through the outdoor heat exchanger 5, and return to the compressor 1 through the gas-liquid separator 13, thus circulating.
Since the refrigerant is throttled and cooled by the first throttling device 3 and the fourth throttling device 4, the temperature difference between the refrigerant temperature in the fourth heat exchange portion 142 and the refrigerant temperature in the third heat exchange portion 141 is small, the temperature of the refrigerant flowing back to the compressor 1 through the third heat exchange portion 141 is not too high, the exhaust temperature of the compressor 1 is not too high, and the compressor 1 can perform well under the condition of low winter environment temperature.
It should be noted that, when the thermal management system includes the third heat exchanger 14, heat dissipation of the battery, cooling of the battery while cooling the cabin, heating of the battery while heating the cabin, and dehumidification of the cabin may be also realized.
The first throttling device 3 and the second throttling device 4 of the thermal management system are two-way throttling valves, so that the number of the valves and connecting pipelines of the thermal management system are reduced, the structure is simpler, the first throttling device 3 and the second throttling device 4 are simultaneously positioned at the upstream end or the downstream end of each branch when the thermal management system operates, a battery is heated when a carriage heats, the battery is cooled when the carriage refrigerates, and the temperature adjustment of the battery and the carriage can be synchronously carried out.
The present application is not limited to the above-mentioned embodiments, but is not limited to the above-mentioned embodiments, and any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical matters of the present application can be made by those skilled in the art without departing from the scope of the present application.
Claims (10)
1. A thermal management system, comprising: a first heat exchanger (6), the first heat exchanger (6) comprising a first heat exchange portion (61) and a second heat exchange portion (62);
The heat management system comprises a refrigerant system and a cooling liquid system, wherein the refrigerant system comprises a compressor (1), a first indoor heat exchanger (2), a first throttling device (3), a second throttling device (4), an outdoor heat exchanger (5) and a first heat exchange part (61), and the first throttling device (3) and the second throttling device (4) are two-way throttles; the cooling liquid system comprises a battery heat exchange assembly (7), a fluid driving device (8) and the second heat exchange part (62), and the refrigerant of the refrigerant system and the cooling liquid of the cooling liquid system can exchange heat through the first heat exchanger (6);
The refrigerant system comprises a first branch (a) and a second branch (b), the outdoor heat exchanger (5) comprises a first port (51) of the outdoor heat exchanger and a second port (52) of the outdoor heat exchanger, the first indoor heat exchanger (2), the first throttling device (3) is connected to the first branch (a), the first throttling device (3) is connected between the first port (51) of the outdoor heat exchanger and the first indoor heat exchanger (2), the first heat exchanging part (61), the second throttling device (4) is connected to the second branch (b), and the second throttling device (4) is connected between the first port (51) of the outdoor heat exchanger and the first heat exchanging part (61);
One end of the first branch (a) and one end of the second branch (b) can be communicated with a first port (51) of the outdoor heat exchanger, a second port (52) of the outdoor heat exchanger is communicated with an outlet of the compressor (1), and the other end of the first branch (a) and the other end of the second branch (b) can be communicated with an inlet of the compressor (1); or, the second port (52) of the outdoor heat exchanger is communicated with the inlet of the compressor (1), and the other end of the first branch (a) and the other end of the second branch (b) can be communicated with the outlet of the compressor (1).
2. A thermal management system according to claim 1, characterized in that it comprises a fluid switching device (9), the second port (52) of the outdoor heat exchanger being connected to the fluid switching device (9), the fluid switching device (9) comprising a first interface (91), a second interface (92), a third interface (93) and a fourth interface (94), the first interface (91) being connected to the outlet of the compressor (1), the other end of the first branch (a) and the other end of the second branch (b) being connected to the second interface (92), the third interface (93) being connected to the inlet of the compressor (1), the fourth interface (94) being connected to the second port (52) of the outdoor heat exchanger;
The fluid switching device (9) comprises a first operating mode and a second operating mode; in the first working mode, the first interface (91) is communicated with the second interface (92), and the third interface (93) is communicated with the fourth interface (94); in the second working mode, the first interface (91) is communicated with the fourth interface (94), and the second interface (92) is communicated with the third interface (93).
3. A thermal management system as defined in claim 1, wherein the thermal management system comprises a first heating mode in which:
The second port (52) of the outdoor heat exchanger is communicated with the inlet of the compressor (1), the other end of the first branch (a) and the other end of the second branch (b) are communicated with the outlet of the compressor (1), and the first throttling device (3) and the second throttling device (4) are in throttling states; the compressor (1), the first indoor heat exchanger (2), the first throttling device (3) and the outdoor heat exchanger (5) are communicated to form a refrigerant loop; the compressor (1), the first heat exchange part (61), the second throttling device (4) and the outdoor heat exchanger (5) are communicated to form a refrigerant loop;
The battery heat exchange assembly (7), the second heat exchange part (62) and the fluid driving device (8) are communicated to form a cooling liquid loop, and the cooling liquid absorbs heat of the refrigerant through the first heat exchanger (6).
4. A thermal management system as defined in claim 1, wherein said thermal management system comprises a first cooling mode in which:
the second port (52) of the outdoor heat exchanger is communicated with the outlet of the compressor (1), the other end of the first branch (a) and the other end of the second branch (b) are communicated with the inlet of the compressor (1), and the first throttling device (3) and the second throttling device (4) are in a throttling state; the compressor (1), the outdoor heat exchanger (5), the first throttling device (3) and the first indoor heat exchanger (2) are communicated to form a refrigerant loop; the compressor (1), the outdoor heat exchanger (5), the second throttling device (4) and the first heat exchange part (61) are communicated to form a refrigerant loop;
The battery heat exchange assembly (7), the second heat exchange part (62) and the fluid driving device (8) are communicated to form a cooling liquid loop, and the refrigerant absorbs heat of the cooling liquid through the first heat exchanger (6).
5. The thermal management system of claim 1, further comprising a defrost mode in which:
The second port (52) of the outdoor heat exchanger is communicated with the outlet of the compressor (1), the other end of the first branch (a) and the other end of the second branch (b) are both communicated with the inlet of the compressor (1), the first throttling device (3) is in a cut-off state, and the second throttling device (4) is in a throttling state; the compressor (1), the outdoor heat exchanger (5), the second throttling device (4) and the first heat exchange part (61) are communicated to form a refrigerant loop; the battery heat exchange assembly (7), the second heat exchange part (62) and the fluid driving device (8) are communicated to form a cooling liquid loop, and the refrigerant absorbs heat of the cooling liquid through the first heat exchanger (6).
6. A thermal management system according to claim 1, wherein the refrigerant system comprises a second indoor heat exchanger (10) and a third throttling device (11), wherein the second indoor heat exchanger (10) and the third throttling device (11) are both arranged in the first branch (a), wherein the third throttling device (11) is connected between the first indoor heat exchanger (2) and the second indoor heat exchanger (10), and wherein the second indoor heat exchanger (10) is connected between the third throttling device (11) and the first throttling device (3).
7. A thermal management system as defined in claim 6, wherein said thermal management system includes a first heating and dehumidification mode in which:
The second port (52) of the outdoor heat exchanger is communicated with the inlet of the compressor (1), the other end of the first branch (a) and the other end of the second branch (b) are communicated with the outlet of the compressor (1), the third throttling device (11) is in a throttling state, and the compressor (1), the first indoor heat exchanger (2), the third throttling device (11), the second indoor heat exchanger (10), the first throttling device (3) and the outdoor heat exchanger (5) are communicated to form a refrigerant loop; the compressor (1), the first heat exchange part (61), the second throttling device (4) and the outdoor heat exchanger (5) are communicated to form a refrigerant loop;
The battery heat exchange assembly (7), the second heat exchange part (62) and the fluid driving device (8) are communicated to form a cooling liquid loop, and the cooling liquid absorbs heat of the refrigerant through the first heat exchanger (6).
8. A thermal management system according to claim 6, wherein said third throttling means (11) comprises an all-pass mode, said third throttling means (11) being in an all-pass mode:
The second port (52) of the outdoor heat exchanger is communicated with the inlet of the compressor (1), and the other end of the first branch (a) and the other end of the second branch (b) are communicated with the outlet of the compressor (1); the compressor (1), the first indoor heat exchanger (2), the third throttling device (11), the second indoor heat exchanger (10), the first throttling device (3) and the outdoor heat exchanger (5) are communicated to form a refrigerant loop; the compressor (1), the first heat exchange part (61), the second throttling device (4) and the outdoor heat exchanger (5) are communicated to form a refrigerant loop; the battery heat exchange assembly (7), the second heat exchange part (62) and the fluid driving device (8) are communicated to form a cooling liquid loop, and the cooling liquid absorbs heat of the refrigerant through the first heat exchanger (6);
Or, the second port (52) of the outdoor heat exchanger is communicated with the outlet of the compressor (1), and the other end of the first branch (a) and the other end of the second branch (b) are communicated with the inlet of the compressor (1); the compressor (1), the outdoor heat exchanger (5), the first throttling device (3), the second indoor heat exchanger (10), the third throttling device (11) and the first indoor heat exchanger (2) are communicated to form a refrigerant loop; the compressor (1), the outdoor heat exchanger (5), the second throttling device (4) and the first heat exchange part (61) are communicated to form a refrigerant loop; the battery heat exchange assembly (7), the second heat exchange part (62) and the fluid driving device (8) are communicated to form a cooling liquid loop, and the refrigerant absorbs heat of the cooling liquid through the first heat exchanger (6).
9. A thermal management system according to any one of claims 1 to 8, wherein the coolant system comprises a second heat exchanger (12), the thermal management system comprising a battery cooling mode in which the second heat exchanger (12), the battery heat exchange assembly (7), and the fluid drive device (8) communicate to form a coolant loop.
10. A thermal management system according to claim 1, characterized in that the thermal management system comprises a third heat exchanger (14), the third heat exchanger (14) comprising a third heat exchange portion (141) and a fourth heat exchange portion (142); the third heat exchange part (141) is connected to the inlet of the compressor (1), and the fourth heat exchange part (142) is connected to the first port (51) of the outdoor heat exchanger.
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| CN112428771B (en) * | 2020-09-30 | 2022-08-12 | 三花控股集团有限公司 | Thermal management system |
| CN112248745A (en) * | 2020-10-10 | 2021-01-22 | 东风汽车集团有限公司 | New energy automobile thermal management system |
| CN114734782B (en) * | 2022-04-25 | 2022-12-16 | 杭州绿能新能源汽车部件有限公司 | Control method of thermal management system |
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| US20190162469A1 (en) * | 2017-11-27 | 2019-05-30 | Air Products And Chemicals, Inc. | Method and system for cooling a hydrocarbon stream |
| CN211892770U (en) * | 2020-02-28 | 2020-11-10 | 杭州三花研究院有限公司 | Thermal management system |
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