Thermal management system
By setting the location of the heating unit in the thermal management system, the high-temperature coolant is first passed through the radiator and then circulated to the heating unit, which solves the heat leakage problem, improves the cooling performance, and maintains the normal function of the heat pump and dehumidification modes, avoiding additional costs and complexity.
Patent Information
- Application Number
- CN202520311552.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-25
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2035-02-25
AI Technical Summary
Existing thermal management systems suffer from heat leakage in cooling mode, which leads to a decrease in the cooling performance of vehicle air conditioning. Furthermore, existing solutions increase cost, size, and structural complexity.
In the thermal management system, the heating unit is located upstream of the first heat exchanger and downstream of the radiator. In the direction of coolant flow, the high-temperature coolant first passes through the radiator to dissipate heat before circulating to the heating unit, thereby reducing the temperature of the heating unit and preventing heat from spreading to the air conditioning unit.
It effectively reduces heat leakage and improves cooling performance, while avoiding the cost and complexity caused by adding components and modifying the air conditioning unit structure, and maintaining the normal function of heat pump mode and dehumidification mode.
Smart Images
Figure CN223750604U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present disclosure relates to a thermal management system, in particular to a thermal management system that can improve the heat leakage phenomenon. BACKGROUND
[0002] The thermal management system comprises a refrigerant circuit, a coolant circuit, and a heat exchanger for thermally coupling the refrigerant circuit and the coolant circuit, through which the heat or cold in the refrigerant circuit can be exchanged with the coolant in the coolant circuit, and then the heat or cold can be transferred to the target object through the coolant to achieve the thermal management of the target object.
[0003] The refrigerant circuit and the coolant circuit can be thermally coupled via a water-cooled condenser, so that the coolant in the coolant circuit absorbs the heat of the refrigerant in the refrigerant circuit and becomes high-temperature coolant, and then the high-temperature coolant flows through the warm air core 300 in the air conditioning box 100 (as shown in Figure 8 and Figure 9 ). Specifically, when the thermal management system is in a heat pump mode, as shown in Figure 8 , the air door 400 of the warm air core 300 is in an open state, air flows through the warm air core 300 and transfers heat to the vehicle cabin (as shown by the arrow in Figure 8 ), thereby achieving heating of the vehicle cabin. When the thermal management system is in a refrigeration mode, as shown in Figure 9 , the air door 400 of the warm air core 300 is in a closed state, air no longer flows through the warm air core 300 (as shown by the arrow in Figure 9 ), but because the coolant flowing through the warm air core 300 is high in temperature, heat is diffused in the air conditioning box 100, as shown by the diffused heat 500 in Figure 9 , so that the air flowing through the evaporator 200 (i.e. the cooled air) is heated to some extent, resulting in a heat leakage phenomenon and reducing the refrigeration performance of the vehicle air conditioner.
[0004] In order to reduce the occurrence of heat leakage, some designers add a water valve in the coolant circuit to prevent high-temperature coolant from entering the air conditioning box when the thermal management system is in the refrigeration mode, or change the internal structure of the air conditioning box to avoid heat diffusion into the air duct that requires cooling when the thermal management system is in the refrigeration mode. However, the above-mentioned methods increase the size of the product, are high in cost, and have a complex structure.
[0005] Therefore, those skilled in the art are committed to developing a new thermal management system to solve the above-mentioned defects of the prior art. INNOVATION CONTENT
[0006] The present disclosure aims to provide a heat management system, which comprises a cooling liquid circuit and an air conditioning box, wherein the cooling liquid circuit has a first heat exchanger, a warm air device and a radiator, the warm air device is arranged in the air conditioning box, the heat management system has a first working mode, in which the cooling liquid flows through the first heat exchanger, the warm air device and the radiator, and along the flow direction of the cooling liquid, the warm air device is located upstream of the first heat exchanger and downstream of the radiator. In this way, when the heat management system is in the first working mode, the high-temperature cooling liquid after flowing through the first heat exchanger is first cooled by the radiator and then circulated to the warm air device, so that the warm air device is at a lower temperature. Compared with the prior art, the temperature difference between the warm air device and the environment can be reduced, the heat of the warm air device can be prevented from being diffused into the air conditioning box, the reheating of low-temperature air (such as air after flowing through an evaporator or a cold air core) can be effectively controlled, the heat leakage phenomenon can be improved, the refrigeration performance can be improved, and the heat pump mode and the dehumidification mode can be affected. The problems of high cost, large size and complex structure caused by additional components (such as a water valve) or the internal structure of the air conditioning box in the prior art are avoided. That is, the present disclosure can effectively improve the heat leakage phenomenon without increasing the cost, size and structural complexity.
[0007] The present disclosure provides a heat management system, which comprises a cooling liquid circuit and an air conditioning box, the cooling liquid circuit has a first heat exchanger, a warm air device and a radiator, wherein the warm air device is arranged in the air conditioning box; wherein the heat management system has a first working mode, in which the cooling liquid flows through the first heat exchanger, the warm air device and the radiator, and along the flow direction of the cooling liquid, the warm air device is located upstream of the first heat exchanger and downstream of the radiator.
[0008] The heat management system according to the present disclosure can also have one or more of the following features, alone or in combination.
[0009] In one or more embodiments, the heat management system has a second working mode, in which the cooling liquid flows through the first heat exchanger and the warm air device.
[0010] In one or more embodiments, the cooling liquid circuit comprises a fluid switching device, which switches the heat management system between the first working mode and the second working mode.
[0011] In one or more embodiments, the cooling fluid circuit comprises: a first cooling fluid circuit comprising the first heat exchanger and the heater core; and a second cooling fluid circuit comprising a radiator, the fluid switching device comprises a first fluid switching device having a first operation mode and a second operation mode, the first cooling fluid circuit is coupled with the second cooling fluid circuit through the first fluid switching device, wherein when the first fluid switching device is in the first operation mode, the first cooling fluid circuit is in series with the second cooling fluid circuit, the thermal management system is in a first working mode; when the first fluid switching device is in the second operation mode, the first cooling fluid circuit is independent of the second cooling fluid circuit, the thermal management system is in a second working mode.
[0012] In one or more embodiments, the first cooling fluid circuit further comprises a first water pump, the first water pump is located between the heater core and the heater device, the downstream of the first heat exchanger and the upstream of the heater device are respectively connected to the first fluid switching device.
[0013] In one or more embodiments, the second cooling fluid circuit further comprises a second water pump and a motor, wherein the second water pump is located between the radiator and the motor, and the upstream of the radiator and the downstream of the motor are respectively connected to the first fluid switching device.
[0014] In one or more embodiments, the cooling fluid circuit further comprises a third cooling fluid circuit, the third cooling fluid circuit comprises a third water pump, a cooler device and a second heat exchanger.
[0015] In one or more embodiments, the fluid switching device further comprises a second fluid switching device having a third operation mode and a fourth operation mode, the second cooling fluid circuit is coupled with the third cooling fluid circuit through the second fluid switching device, wherein when the second fluid switching device is in the third operation mode, the second cooling fluid circuit is in series with the third cooling fluid circuit; when the second fluid switching device is in the fourth operation mode, the second cooling fluid circuit is independent of the third cooling fluid circuit.
[0016] In one or more embodiments, in the second cooling fluid circuit, the downstream of the motor and the upstream of the radiator are respectively connected to the second fluid switching device, and in the third cooling fluid circuit, the upstream of the third water pump and the downstream of the second heat exchanger are respectively connected to the second fluid switching device.
[0017] In one or more embodiments, the first fluid switching device and the second fluid switching device are both four-way valves.
[0018] In one or more embodiments, the first heat exchanger is a water-cooled condenser, the second heat exchanger is a chiller, and the heat sink is a low-temperature heat sink.
[0019] In one or more embodiments, the first mode is a cooling mode, and the second mode is a heat pump mode or a dehumidification mode. BRIEF DESCRIPTION OF DRAWINGS
[0020] Figure 1 Schematic diagram of the cooling fluid circuit in a heat management system according to an embodiment of the present disclosure;
[0021] Figure 2 Fluid communication state of a heat management system according to an embodiment of the present disclosure when in a cooling mode;
[0022] Figure 3 Fluid communication state of a heat management system according to an embodiment of the present disclosure when in a cooling mode, wherein only the main heat management components in the circulation loop after the first cooling fluid circuit and the second cooling fluid circuit are connected in series are shown;
[0023] Figure 4 Fluid communication state of a heat management system according to an embodiment of the present disclosure when in a heat pump mode;
[0024] Figure 5 Fluid communication state of a heat management system according to an embodiment of the present disclosure when in a dehumidification mode;
[0025] Figure 6 Basic architecture of the cooling fluid circuit in a heat management system according to an embodiment of the present disclosure, wherein an air conditioning box is shown;
[0026] Figure 7 Fluid communication state of the basic architecture of a heat management system according to an embodiment of the present disclosure when in a cooling mode, wherein an air conditioning box is shown;
[0027] Figure 8 Schematic diagram of an air conditioning box in a heat management system in the prior art when in a heat pump mode, wherein the flow path of air is shown;
[0028] Figure 9 Schematic diagram of an air conditioning box in a heat management system in the prior art when in a cooling mode; wherein the flow path of air is shown. DETAILED DESCRIPTION
[0029] The above description is only used to illustrate the specific embodiments of the present disclosure, and the skilled in the art can easily understand other advantages and effects of the present disclosure from the content disclosed in the specification.
[0030] It is to be understood that the structures, proportions, sizes, etc. shown in the drawings accompanying the present specification are merely intended to facilitate the understanding of the content disclosed by the present specification for the understanding and reading of those skilled in the art, and are not intended to limit the conditions for implementing the present disclosure, and therefore do not have substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present disclosure, should still fall within the scope of the technical content disclosed by the present disclosure. At the same time, the terms such as "upper" and "one" used in the present specification are only for the convenience of clear description, and are not intended to limit the scope of the present disclosure, and the change or adjustment of the relative relationship without substantially changing the technical content is also considered as the scope of the present disclosure.
[0031] The present disclosure provides a thermal management system. The specific embodiments of the present disclosure are described in detail below in conjunction with the various drawings.
[0032] Please refer to Figure 1 and Figure 6 , both of which show the basic architecture of the cooling liquid circuit in the thermal management system, the difference being Figure 6 shows the air conditioning box 100, Figure 1 does not show the air conditioning box 100, and for simplicity, Figure 1 only shows the connection relationship of each component in the cooling liquid circuit. As Figure 1 and Figure 6 shown, the thermal management system 1 includes a cooling liquid circuit C and an air conditioning box 100. The cooling liquid circuit C has a first heat exchanger 10 (for example, a water-cooled condenser), a warm air device 20 (for example, a warm air core), and a radiator 30 (for example, a low-temperature radiator), wherein the warm air device 20 is arranged in the air conditioning box 100. The thermal management system 1 has a first working mode (for example, a refrigeration mode, as Figure 2 and Figure 7In the first working mode, the coolant flows through the first heat exchanger 10, the heating device 20, and the radiator 30, and the heating device 20 is located upstream of the first heat exchanger 10 and downstream of the radiator 30 in the flow direction of the coolant. In this way, the high-temperature coolant after flowing through the first heat exchanger 10 is first cooled by the radiator 30 and then circulated to the heating device 20. Compared with the prior art, the coolant temperature flowing through the heating device 20 can be effectively reduced, the heating device 20 is at a lower temperature, the temperature difference between the heating device 20 and the environment is reduced, more heat of the heating device 20 is prevented from diffusing into the air conditioning box 100, the reheating of low-temperature air (for example, air after flowing through an evaporator or a cooling core) can be effectively controlled, the heat leakage phenomenon is improved, the heating performance in the heat pump mode (to be described later) is not affected, the problems of high cost, large size, and complex structure caused by additional components (for example, a water valve) or modification of the internal structure of the air conditioning box in the prior art are avoided, that is, the heat leakage phenomenon can be effectively improved without increasing the cost, size, and structural complexity.
[0033] Please refer to Figure 1 , Figure 4 , Figure 5 and Figure 6 , the thermal management system 1 can also have a second working mode (for example, a heat pump mode, as shown in Figure 4 ; or a dehumidification mode, as shown in Figure 5 ), in which the coolant flows through the first heat exchanger 10 and the heating device 20. In this way, the high-temperature coolant after flowing through the first heat exchanger 10 directly passes through the heating device 20, so that the heating device 20 is at a higher temperature. In this way: when the thermal management system is in the heat pump mode, air flowing through the heating core 20 can transfer heat to the vehicle cabin, thereby achieving heating of the vehicle cabin; when the thermal management system is in the dehumidification mode, the cooled air (or dehumidified air, that is, the temperature is reduced to below the dew point temperature, the water vapor condenses into small water droplets and separates from the air, thereby achieving the effect of dehumidification) flows through the heating device 20 and is heated, and then is circulated to the vehicle cabin, so as to avoid the problem that the dehumidified air directly circulates to the vehicle cabin, causing the temperature of the vehicle cabin to further decrease and causing the driver and passengers to be uncomfortable.
[0034] In order to switch the thermal management system 1 between the first working mode and the second working mode, the coolant circuit C can include a fluid switching device 40, which can adjust the communication state of the coolant circuit, so that the thermal management system 1 can be switched between different working modes.
[0035] Please refer to Figure 1 and Figure 6, the cooling fluid circuit C can comprise a first cooling fluid circuit C1 and a second cooling fluid circuit C2, wherein the first cooling fluid circuit C1 comprises the first heat exchanger 10 and the heating device 20; the second cooling fluid circuit C2 comprises the radiator 30. The fluid switching device 40 comprises a first fluid switching device 41 having a first operation mode and a second operation mode, the first cooling fluid circuit C1 is coupled with the second cooling fluid circuit C2 through the first fluid switching device 41. When the first fluid switching device 41 is in the first operation mode (as shown in Figure 2 ), the first cooling fluid circuit C1 and the second cooling fluid circuit C2 are in series, and the thermal management system 1 is in a first working mode (e.g. a refrigeration mode). When the first fluid switching device 41 is in the second operation mode (as shown in Figure 4 and Figure 5 ), the first cooling fluid circuit C1 and the second cooling fluid circuit C2 are independent of each other, and the thermal management system is in a second working mode (e.g. a heat pump mode or a dehumidification mode).
[0036] Specifically, as shown in Figure 1 and Figure 2 , in order to provide power for the cooling fluid circuit, the first cooling fluid circuit C1 can further comprise a first water pump 11, which can be located between the heating device 20 and the first heat exchanger 10 (e.g. can be located downstream of the heating device 20 and upstream of the first heat exchanger 10), and the downstream of the first heat exchanger 10 and the upstream of the heating device 20 are respectively connected to two valve ports of the first fluid switching device 41. In an embodiment, the first fluid switching device 41 can be a four-way valve, and comprises a first valve port a1, a second valve port b1, a third valve port c1 and a fourth valve port d1, wherein the downstream of the first heat exchanger 10 is in fluid communication with the first valve port a1 of the first fluid switching device 41, and the upstream of the heating device 20 is in fluid communication with the fourth valve port d1 of the first fluid switching device 41.
[0037] The second cooling fluid circuit C2 can comprise a second water pump 12 for providing power for the second cooling fluid circuit C2 and the motor 50, wherein the second water pump 12 can be located between the radiator 30 and the motor 50 (e.g. can be located downstream of the radiator 30 and upstream of the motor 50), and the upstream of the radiator 30 and the downstream of the motor 50 are respectively connected to the other two valve ports of the first fluid switching device 41. In an embodiment, the upstream of the radiator 30 is in fluid communication with the second valve port b1 of the first fluid switching device 41, and the downstream of the motor 50 is in fluid communication with the third valve port c1 of the first fluid switching device 41. When the first fluid switching device 41 is in the first operation mode, as shown in Figure 2 , the first valve port a1 is in fluid communication with the second valve port b1, and the third valve port c1 is in fluid communication with the fourth valve port d1, so as to connect the first cooling fluid circuit C1 and the second cooling fluid circuit C2 in series. When the first fluid switching device 41 is in the second operation mode, as shown in Figure 4 andFigure 5 As shown, the first valve port a1 fluidly communicates with the fourth valve port d1, and the second valve port b1 fluidly communicates with the third valve port c1, so that the first coolant circuit C1 and the second coolant circuit C2 are independent of each other.
[0038] In an embodiment, as shown in FIG. 1, the fluid switching device 40 can further include a second fluid switching device 42 having a third operating mode and a fourth operating mode. The second coolant circuit C2 can be coupled with the first coolant circuit C1 through the second fluid switching device 42. When the second fluid switching device 42 is in the third operating mode, the second coolant circuit C2 and the first coolant circuit C1 are in series. When the second fluid switching device 42 is in the fourth operating mode, the second coolant circuit C2 and the first coolant circuit C1 are independent of each other. Figure 1 and Figure 6 As shown, the cold zone coolant circuit C can further include a third coolant circuit C3, which can have a third water pump 13, a cold air device 60 (e.g., a cold air core) and a second heat exchanger 70 (e.g., a cooler) fluidly connected in sequence, wherein the cold air device 60 can be located in the air conditioning box 100. The fluid switching device 40 can further include a second fluid switching device 42 having a third operating mode and a fourth operating mode, through which the second coolant circuit C2 can be coupled with the third coolant circuit C3. When the second fluid switching device 42 is in the third operating mode, the second coolant circuit C2 and the third coolant circuit C3 are in series. When the second fluid switching device 42 is in the fourth operating mode, the second coolant circuit C2 and the third coolant circuit C3 are independent of each other.
[0039] Specifically, in the second coolant circuit C2, the downstream of the motor 50 and the upstream of the radiator 30 can be connected to two valve ports of the second fluid switching device 42, respectively, and in the third coolant circuit C3, the upstream of the third water pump 13 and the downstream of the second heat exchanger 70 can be connected to another two valve ports of the second fluid switching device 42, respectively. In an embodiment, the second fluid switching device 42 can be a four-way valve, and include a first valve port a2, a second valve port b2, a third valve port c2 and a fourth valve port d2. In the second coolant circuit C2, the downstream of the motor 50 can fluidly communicate with the first valve port a2 of the second fluid switching device 42, and the upstream of the radiator 30 fluidly communicate with the fourth valve port d2 of the second fluid switching device 42. In the third coolant circuit C3, the upstream of the third water pump 13 can fluidly communicate with the second valve port b2 of the second fluid switching device 42, and the downstream of the second heat exchanger 70 can fluidly communicate with the third valve port c2 of the second fluid switching device 42. When the second fluid switching device 42 is in the third operating mode, as shown in FIG. 2, the first valve port a2 fluidly communicates with the second valve port b2, and the third valve port c2 fluidly communicates with the fourth valve port d2, so that the second coolant circuit C2 and the third coolant circuit C3 are in series. When the second fluid switching device 42 is in the fourth operating mode, as shown in FIG. 3, the first valve port a2 fluidly communicates with the fourth valve port d2, and the second valve port b2 fluidly communicates with the third valve port c2, so that the second coolant circuit C2 and the third coolant circuit C3 are independent of each other. Figure 4 Figure 5
[0040] The fluid communication states of the components of the thermal management system 1 in different working modes will be described in detail below with reference to the accompanying drawings.
[0041] Please refer to Figure 2 and Figure 7 When the thermal management system 1 is in the first working mode (for example, the refrigeration mode), the first fluid switching device 41 is in the first operating mode, and the second fluid switching device 42 is in the fourth operating mode, so that the first cooling liquid circuit C1 and the second cooling liquid circuit C2 are connected in series to form a circulation loop, and the third cooling liquid circuit C3 is an independent loop. In this way, the cooling liquid pumped by the first water pump C1 first flows through the first heat exchanger 1 to make the cooling liquid into high-temperature cooling liquid (for example, 66°C cooling liquid), and then the high-temperature cooling liquid flows through the radiator 30 and becomes low-temperature cooling liquid (for example, 55°C cooling liquid), and then the low-temperature cooling liquid flows through the motor 50 and exchanges heat with the motor 50 to make the cooling liquid into medium-temperature cooling liquid (for example, 56°C cooling liquid), and finally the medium-temperature cooling liquid circulates to the warm air device 20 and returns to the first heat exchanger 10. At this time, the communication state of the main thermal management elements is as shown in Figure 3 Compared with the prior art technical solution in which the high-temperature cooling liquid (for example, 66°C cooling liquid) after flowing through the first heat exchanger directly flows through the warm air device, the above-mentioned arrangement of the present disclosure is to make the medium-temperature cooling liquid (for example, 56°C cooling liquid) flow through the warm air device 20, so that it is at a relatively low temperature, so as to reduce the temperature difference (for example, the temperature difference can be reduced by 10°C) between the warm air device 20 and the ambient temperature, avoid more heat of the warm air device 20 from spreading into the air conditioning box 100, and thus effectively control the reheating of the low-temperature air (for example, the air after flowing through the evaporator or the cold air core), thereby improving the heat leakage phenomenon and improving the refrigeration performance of the vehicle air conditioner (for example, when the above-mentioned temperature difference is reduced by 10°C, the heat leakage can be reduced by 0.5-2.2K, and correspondingly, the refrigeration power is increased by 150W-610W). The flow state in the third cooling liquid circuit C3 (used for refrigeration) is the same as that of the prior art, which will not be described here.
[0042] Please refer to Figure 4When the thermal management system 1 is in the second working mode (e.g. heat pump mode), the first fluid switching device 41 is in the second operation mode, and the second fluid switching device 42 is in the third operation mode, so that the first coolant circuit C1 is an independent circuit, and the second coolant circuit C2 and the third coolant circuit C3 are connected in series to form a circulation circuit. In this way, the coolant pumped by the first water pump C1 first flows through the first heat exchanger 1 to make the coolant high-temperature coolant (e.g. 66℃ coolant), and then the high-temperature coolant flows through the warm air device 20 to make the warm air device 20 at a higher temperature. The air flowing through the warm air device 20 can transfer heat to the vehicle cabin, thereby achieving heating of the vehicle cabin. This is the same as the heat pump mode in the prior art, that is, compared with the prior art, the thermal management system 1 of the present disclosure does not have any adverse effects on the heat pump mode. The circulation circuit formed by the series connection of the second coolant circuit C2 and the third coolant circuit C3 is the same as the prior art, and will not be described here.
[0043] Please refer to Figure 5 When the thermal management system 1 is in another second working mode (e.g. dehumidification mode, also referred to as third working mode), the first fluid switching device 41 is in the second operation mode, and the second fluid switching device 42 is in the fourth operation mode, so that the first coolant circuit C1, the second coolant circuit C2 and the third coolant circuit C3 form three independent circuits respectively. In this way, the coolant pumped by the first water pump C1 first flows through the first heat exchanger 1 to make the coolant high-temperature coolant (e.g. 66℃ coolant), and then the high-temperature coolant flows through the warm air device 20 to make the warm air device 20 at a higher temperature. The air (or dehumidified air) cooled by the cold air device 60 (so that the air temperature is below the dew point temperature, the water vapor condenses into small water droplets and separates from the air, thereby achieving the effect of dehumidification) flows through the warm air device 20 and is heated, and then is recycled to the vehicle cabin to avoid the problem that the dehumidified air directly recycled to the vehicle cabin causes the temperature of the vehicle cabin to further decrease, causing discomfort to the driver and passengers. The circuits of the second coolant circuit C2 and the third coolant circuit C3 (for dehumidification) are the same as the prior art, and will not be described here.
[0044] Although the above embodiments of the present disclosure mainly take the example of the first fluid switching device 41 and the second fluid switching device 42 being four-way valves, the present disclosure is not limited thereto. For example, at least one of the first fluid switching device 41 and the second fluid switching device 42 can also be a five-way valve, a six-way valve or a multi-way valve with more valve ports, as long as the above working modes of the thermal management system 1 can be achieved.
[0045] In addition, the above embodiments of the present disclosure mainly take the example of Figure 1 and Figure 6The disclosed components in the cooling liquid circuit C are described by way of example, however, the present disclosure is not limited thereto, as long as the radiator 30 can be selectively connected in series to the circuit of the first heat exchanger 10 and the heating device 20, and when the thermal management system is in the cooling mode, the heating device 20 is located upstream of the first heat exchanger 10 and downstream of the radiator 30 in the flow direction of the fluid, the heat leakage phenomenon can be reduced, and the cooling performance of the vehicle air conditioner can be improved.
[0046] The present disclosure provides a thermal management system, which comprises a cooling liquid circuit and an air conditioning box, wherein the cooling liquid circuit has a first heat exchanger, a heating device, and a radiator, the heating device is arranged in the air conditioning box, the thermal management system has a first working mode, in which the cooling liquid flows through the first heat exchanger, the heating device, and the radiator, and the heating device is located upstream of the first heat exchanger and downstream of the radiator in the flow direction of the cooling liquid. In this way, when the thermal management system is in the first working mode, the high-temperature cooling liquid after flowing through the first heat exchanger is first cooled by the radiator before circulating to the heating device, so that the heating device is at a lower temperature. Compared with the prior art, the temperature difference between the heating device and the ambient temperature can be reduced, the diffusion of more heat from the heating device to the air conditioning box can be avoided, the reheating of low-temperature air (such as air after flowing through an evaporator or a cold air core) can be effectively controlled, the heat leakage phenomenon can be improved, the cooling performance can be improved, and the heat pump mode and the dehumidification mode can not be affected. The problems of high cost, large size, and complex structure caused by additional components (such as a water valve) or modification of the internal structure of the air conditioning box in the prior art can be avoided. That is, the present disclosure can effectively improve the heat leakage phenomenon without increasing the cost, size, and structural complexity.
[0047] The exemplary embodiments of the thermal management system provided by the present disclosure are described above with reference to the preferred embodiments, however, those skilled in the art can understand that various modifications and improvements can be made to the above specific embodiments without departing from the concept of the present disclosure, and various technical features and structures proposed by the present disclosure can be combined without exceeding the protection scope of the present disclosure, and the protection scope of the present disclosure is determined by the appended claims.
Claims
1. A thermal management system (1), characterized in that, The heat management system (1) comprises a cooling liquid circuit (C) and an air conditioning box (100), the cooling liquid circuit (C) has a first heat exchanger (10), a warm air device (20) and a radiator (30), wherein the warm air device (20) is arranged in the air conditioning box (100); The heat management system (1) has a first working mode, in which the cooling liquid flows through the first heat exchanger (10), the warm air device (20) and the radiator (30), and in the flow direction of the cooling liquid, the warm air device (20) is located upstream of the first heat exchanger (10) and downstream of the radiator (30).
2. The thermal management system (1) according to claim 1, characterized in that The heat management system (1) has a second working mode, in which the cooling liquid flows through the first heat exchanger (10) and the warm air device (20).
3. The thermal management system (1) according to claim 2, characterized in that The cooling liquid circuit (C) comprises a fluid switching device (40) for switching the heat management system (1) between the first working mode and the second working mode.
4. The thermal management system (1) according to claim 3, characterized in that The cooling liquid circuit (C) comprises: A first cooling liquid circuit (C1) comprising the first heat exchanger (10) and the warm air core (20); and A second cooling liquid circuit (C2) comprising a radiator (30), The fluid switching device (40) comprises a first fluid switching device (41) having a first operating mode and a second operating mode, the first cooling liquid circuit (C1) is coupled with the second cooling liquid circuit (C2) through the first fluid switching device (41), When the first fluid switching device (41) is in the first operating mode, the first cooling liquid circuit (C1) and the second cooling liquid circuit (C2) are connected in series, so that the heat management system (1) is in the first working mode; When the first fluid switching device (41) is in the second operating mode, the first cooling liquid circuit (C1) and the second cooling liquid circuit (C2) are independent, so that the heat management system (1) is in the second working mode.
5. The thermal management system (1) of claim 4, characterized in that The first cooling liquid circuit (C1) further comprises a first water pump (11), which is located between the warm air device (20) and the first heat exchanger (10), downstream of the first heat exchanger (10) and upstream of the warm air device (20) are respectively connected to the first fluid switching device (41).
6. The thermal management system (1) according to claim 4, characterized in that The second cooling liquid circuit (C2) further comprises a second water pump (12) and a motor (50), wherein the second water pump (12) is located between the radiator (30) and the motor (50), and upstream of the radiator (30) and downstream of the motor (50) are respectively connected to the first fluid switching device (41).
7. The thermal management system (1) according to claim 4, characterized in that The cooling liquid circuit (C) further comprises a third cooling liquid circuit (C3), which comprises a third water pump (13), a cold air device (60) and a second heat exchanger (70).
8. The thermal management system (1) of claim 7, characterized in that The fluid switching device (40) further comprises a second fluid switching device (42) having a third operating mode and a fourth operating mode, the second coolant circuit (C2) being coupled with the third coolant circuit (C3) through the second fluid switching device (42), wherein, when the second fluid switching device (42) is in the third operating mode, the second coolant circuit (C2) is in series with the third coolant circuit (C3); when the second fluid switching device (42) is in the fourth operating mode, the second coolant circuit (C2) is independent of the third coolant circuit (C3).
9. The thermal management system (1) according to claim 8, characterized in that, in the second coolant circuit (C2), the second fluid switching device (42) is connected downstream of the electric machine (50) and upstream of the radiator (30), in the third coolant circuit (C3), the second fluid switching device (42) is connected upstream of the third water pump (13) and downstream of the second heat exchanger (70).
10. The thermal management system (1) according to claim 8 or 9, characterized in that The first fluid switching device (41) and the second fluid switching device (42) are both four-way valves.
11. The thermal management system of claim 7, wherein, The first heat exchanger (10) is a water-cooled condenser, the second heat exchanger (70) is a chiller, and the radiator (30) is a low-temperature radiator.
12. The thermal management system (1) according to claim 2, characterized in that The first mode is a refrigeration mode, and the second mode is a heat pump mode or a dehumidification mode.