Thermal management system for vehicle

Abstract

A thermal management system for a vehicle includes: a valve module configured to control a flow of a coolant introduced into an interior according to at least one mode of adjusting a temperature of the interior of the vehicle and a temperature of a battery module; a first line provided with the battery module and having a first end connected to the valve module to selectively flow the coolant; a cooler connected to a second end of the first line; and a second line, a third line, a fourth line, a fifth line, and a sixth line configured to selectively flow a coolant. A thermal management system for a vehicle may adjust a temperature of a battery module using one cooler in which a refrigerant and a coolant exchange heat with each other and a battery heater for selectively heating the coolant, and may perform heating of a vehicle interior using the coolant heated by the battery heater, and can simplify the layout of the system and reduce manufacturing costs by forming a plurality of coolant flow lines from a single valve according to a selected mode of the vehicle.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to and the benefit of Korean Patent Application No. 10-2023-0151700 filed in the Korean Intellectual Property Office on November 6, 2023, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present invention relates to a thermal management system for a vehicle. More particularly, the present invention relates to a thermal management system for a vehicle capable of regulating the temperature of a battery module. Background Art

[0004] In recent years, as environmental and energy issues have become increasingly important, electric vehicles have gained popularity as future transportation tools. Electric vehicles use a battery module formed of a plurality of rechargeable cells as a battery pack as a main power source, so they do not generate exhaust gas and have low noise.

[0005] Such an electric vehicle is driven by a driving motor operated by electric power supplied by a battery module. In addition, the electric vehicle includes a plurality of electronic devices for convenience devices, and electrical components for controlling and managing the driving motor and charging the battery module.

[0006] Since a battery module, a drive motor serving as a main power source of an electric vehicle, and electrical components generate a large amount of heat, effective temperature management (eg, effective cooling) of the electrical components and the battery module is required.

[0007] In addition, because the battery module performs best at a preset temperature, the battery module needs to be quickly heated to the preset temperature at the beginning of driving.

[0008] Conventionally, a separate cooling system is applied to regulate the temperature of the electrical components and the battery module. However, the capacity of the cooling system must be increased, resulting in limited space. In addition, when the capacity of the cooling system increases, the power required for the cooling system to operate also increases.

[0009] The above information disclosed in this Background section is provided only to enhance understanding of the background of the invention and therefore it may contain information that does not form the prior art that is already known to a person of ordinary skill in the art. Summary of the invention

[0010] The present invention provides a thermal management system for a vehicle, which can adjust the temperature of a battery module using a cooler in which a refrigerant and a coolant exchange heat with each other and a battery heater that selectively heats the coolant. The thermal management system can also heat the interior of the vehicle using the coolant heated by the battery heater.

[0011] Furthermore, the present invention provides a thermal management system for a vehicle, which can simplify the layout of the system and reduce manufacturing costs by forming a plurality of coolant flow lines using a single valve according to a selected mode of the vehicle.

[0012] In an embodiment of the present invention, a thermal management system for a vehicle may include: a valve module configured to control the flow of a coolant introduced into the interior according to at least one mode of adjusting the temperature of the interior of the vehicle and the temperature of the battery module; and a first pipeline having a first end connected to the valve module to selectively flow the coolant. The first pipeline is provided with a battery module. The thermal management system also includes: a cooler connected to the second end of the first pipeline; a second pipeline configured to selectively flow the coolant and including a first end connected to the cooler and a second end connected to the valve module; and a third pipeline configured to selectively flow the coolant and having a first end connected to the valve module and a second end connected to the battery heater. The thermal management system also includes: a fourth pipeline configured to selectively flow the coolant and having a first end connected to the battery heater and a second end connected to the valve module; a fifth pipeline configured to selectively flow the coolant and having a first end connected to the valve module and a second end connected to the cabin heater; and a sixth pipeline having a first end connected to the cabin heater and a second end connected to the valve module. The sixth pipeline is configured to selectively flow the coolant.

[0013] The valve module may include a valve configured to control the flow of a coolant introduced into the inside, and at least one water pump provided to the valve.

[0014] The at least one water pump may include a first water pump installed on the valve corresponding to the first pipeline, and a second water pump installed on the valve corresponding to the fifth pipeline.

[0015] The first water pump and the second water pump may be arranged at positions facing each other with respect to the valve.

[0016] The coolant selectively introduced from the second line, the third line, the fourth line, or the sixth line may be selectively discharged through the first line, the fourth line, or the fifth line according to at least one selected mode.

[0017] The valve may be configured to selectively discharge the coolant selectively introduced from the second line, the third line, the fourth line, or the sixth line through the first line, the fourth line, or the fifth line according to a selected mode of at least one mode.

[0018] The at least one mode may include a first mode for heating the vehicle interior and cooling the battery module, a second mode for increasing the temperature of the battery module, and a third mode for heating the vehicle interior and increasing the temperature of the battery module.

[0019] In the first mode, the first pipeline is connected to the second pipeline by operation of the valve module to form an independent closed loop through which the coolant circulates, so that the coolant cooled in the cooler can be supplied to the battery module. The third pipeline, the fourth pipeline, the fifth pipeline, and the sixth pipeline are connected to each other by operation of the valve module, so that the coolant can flow along the third pipeline, the fourth pipeline, the fifth pipeline, and the sixth pipeline. The coolant heated while passing through the battery heater is supplied to the cabin heater along the third pipeline and the fifth pipeline connected by operation of the valve module.

[0020] In the second mode, the first pipeline, the second pipeline, the third pipeline and the fourth pipeline are connected to each other by the operation of the valve module so that the coolant heated in the battery heater can be supplied to the battery module. The fifth pipeline and the sixth pipeline are closed by the operation of the valve module, and the first pipeline, the second pipeline, the third pipeline and the fourth pipeline form an independent closed loop through which the coolant circulates by the operation of the valve module.

[0021] In the third mode, the first line, the second line, the third line, the fourth line, the fifth line, and the sixth line are connected to each other by the operation of the valve module so that the coolant heated in the battery heater can be supplied to the battery module and the cabin heater. The coolant heated while passing through the battery heater passes through the cabin heater along the fifth line connected to the third line through the valve module, and then passes through the battery module along the sixth line and the first line.

[0022] The chiller can be connected to the air conditioning unit via a refrigerant connection line.

[0023] The cooler may be a water-cooled heat exchanger configured to perform heat exchange between a coolant introduced into the inside and a refrigerant supplied from an air conditioning unit.

[0024] In order to cool the battery module using the coolant after heat exchange in the cooler, the air conditioning unit may be configured to supply low-temperature refrigerant to the cooler through a refrigerant connection line.

[0025] As described above, according to the thermal management system for a vehicle according to an embodiment, the overall efficiency of the system can be improved by adjusting the temperature of the battery module using a battery heater and a cooler in which a refrigerant exchanges heat with a coolant, and using the coolant heated by the battery heater to perform heating of the vehicle interior.

[0026] Furthermore, according to the present invention, it is possible to achieve streamlining and simplification of the system by forming a plurality of coolant flow lines by a single valve according to a selected mode of a vehicle, and to reduce manufacturing costs by removing a PTC heater.

[0027] Manufacturing costs can be reduced.

[0028] Furthermore, according to the embodiments, the optimal performance of the battery module can be brought into play by effectively adjusting the temperature of the battery module, and the overall driving distance of the vehicle can be increased through effective management of the battery module.

[0029] In addition, according to the embodiment, the manufacturing cost and weight can be reduced and the space utilization can be improved by simplifying the entire system. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a block diagram of a thermal management system for a vehicle according to an embodiment.

[0031] Figure 2 is an operation diagram according to a first mode of a thermal management system for a vehicle according to an embodiment.

[0032] Figure 3 is an operation diagram according to a second mode of a thermal management system for a vehicle according to an embodiment.

[0033] Figure 4 is an operation diagram according to a third mode of the thermal management system for a vehicle according to an embodiment.

[0034] Description of Reference Numerals

[0035] 3: Air conditioning unit

[0036] 5: Refrigerant connecting pipeline

[0037] 10: Battery module

[0038] 11, 12, 13: First pipeline, second pipeline, third pipeline

[0039] 14, 15, 16: Fourth pipeline, fifth pipeline, sixth pipeline

[0040] 20: Cooler

[0041] 30: Battery heater

[0042] 40: Cabin heater

[0043] 50: Valve module

[0044] 51: Valve

[0045] 53: First water pump

[0046] 55: Second water pump. DETAILED DESCRIPTION

[0047] Some embodiments are described in detail below with reference to the accompanying drawings.

[0048] The embodiments described in this specification and the configurations shown in the accompanying drawings are merely exemplary embodiments of the present invention and do not cover the entire scope of the present invention. Therefore, it should be understood that various equivalent forms and variations may exist when the present specification is applied.

[0049] In order to clearly describe the present invention, parts irrelevant to the description are omitted, and the same reference numerals are used throughout the specification to designate the same elements or equivalents.

[0050] Furthermore, the size and thickness of each element are arbitrarily shown in the drawings, but the present invention is not necessarily limited thereto, and in the drawings, the thickness of layers, films, panels, regions, etc., are exaggerated for clarity.

[0051] In addition, unless explicitly described to the contrary, the word “comprise” and variations such as “comprises” or “comprising”, will be understood to imply the inclusion of stated elements but not the exclusion of any other elements.

[0052] In addition, each term such as “unit,” “means,” “portion,” “part,” and “member” described in the specification refers to a unit of a comprehensive element that performs at least one function or operation.

[0053] When a component, device, element, etc. of the present invention is described as having a purpose or performing an operation, function, etc., the component, device or element should be considered herein as being "configured to" satisfy the purpose or perform the operation or function.

[0054] Figure 1 is a block diagram of a thermal management system for a vehicle according to an embodiment.

[0055] According to an embodiment of the present invention, a thermal management system for a vehicle can effectively adjust the temperature of a battery module 10 using one cooler 20 and a battery heater 30, and perform heating of the vehicle interior using a coolant heated at the battery heater 30. Specifically, a refrigerant and a coolant perform heat exchange with each other in the cooler 20, and the battery heater 30 is configured to selectively heat the coolant.

[0056] Furthermore, according to the thermal management system, by forming a plurality of coolant lines according to a selected mode of the vehicle by a single valve 51 , the layout of the system can be simplified and the manufacturing cost can be reduced.

[0057] Here, according to the thermal management system, in the electric vehicle, the battery module 10 through which the coolant circulates may be interconnected with the air conditioning unit 3 that circulates the refrigerant to cool the interior of the vehicle through the cooler 20 .

[0058] In other words, refer to Figure 1The thermal management system may include a first line 11 , a second line 12 , a third line 13 , a fourth line 14 , a fifth line 15 , a sixth line 16 , a valve module 50 , and a cabin heater 40 .

[0059] The valve module 50 may control the flow of the coolant introduced into the interior according to at least one selected mode of adjusting the temperature of the vehicle interior and the temperature of the battery module 10 .

[0060] The configuration of the valve module 50 is described in more detail below.

[0061] In one embodiment, a first end of the first line 11 may be connected to the valve module 50 , and a coolant may selectively flow therethrough. The battery module 10 may be disposed on the first line 11 .

[0062] Here, the cooler 20 may be connected to the second end of the first pipeline 11 .

[0063] The cooler 20 may be connected to the air conditioning unit 3 through the refrigerant connection line 5. The cooler 20 may be a water-cooled heat exchanger that performs heat exchange between the coolant introduced inside and the refrigerant supplied from the air conditioning unit 3.

[0064] In order to cool the battery module 10 using the coolant that performs heat exchange at the cooler 20 , the air conditioning unit 3 may supply low-temperature refrigerant to the cooler 20 through the refrigerant connection line 5 .

[0065] In other words, the cooler 20 may adjust the temperature of the coolant by performing heat exchange between the selectively supplied coolant and the refrigerant selectively supplied from the air-conditioning unit 3 .

[0066] Here, the cooler 20 may operate while cooling the battery module 10 .

[0067] A first end of the second line 12 may be connected to the cooler 20. A second end of the second line 12 may be connected to the valve module 50, and a coolant may selectively flow therethrough.

[0068] In the present embodiment, a first end of the third line 13 may be connected to the valve module 50 to allow the coolant to selectively flow therethrough. A second end of the third line 13 may be connected to the battery heater 30 .

[0069] A first end of the fourth line 14 may be connected to the battery heater 30. A second end of the fourth line 14 may be connected to the valve module 50 to selectively flow the coolant therethrough.

[0070] Here, in order to increase the temperature of the battery module 10 or to supply the high-temperature coolant to the vehicle interior heater 40 , the battery heater 30 may operate to heat the coolant.

[0071] The battery heater 30 may be an electric heater operated by an electric power source.

[0072] When the temperature of the battery module 10 needs to be increased or the interior of the vehicle needs to be heated, the battery heater 30 may heat the coolant supplied through the third line 13 and discharge the heated coolant to the fourth line 14 .

[0073] Therefore, the coolant whose temperature is increased while passing through the battery heater 30 may be supplied to the cabin heater 40 and the battery module 10 by the operation of the valve module 50 .

[0074] Therefore, when the temperature of the battery module 10 needs to be increased or the interior of the vehicle needs to be heated, the battery heater 30 may be selectively operated.

[0075] In one form, the cabin heater 40 may be disposed inside an HVAC module (not shown). The evaporator disposed in the air conditioning unit 3 may also be disposed inside the HVAC module.

[0076] In one embodiment, a first end of the fifth line 15 may be connected to the valve module 50 to allow the coolant to selectively flow therethrough. A second end of the fifth line 15 may be connected to the cabin heater 40 .

[0077] In addition, a first end of the sixth line 16 may be connected to the cabin heater 40. A second end of the sixth line 16 may be connected to the valve module 50 to allow the coolant to selectively flow therethrough.

[0078] In one embodiment, the valve module 50 may include a valve 51 configured to control the flow of the coolant introduced into the interior, and at least one water pump provided to the valve 51 .

[0079] Here, the at least one water pump may include a first water pump 53 and a second water pump 55 .

[0080] First, the first water pump 53 may be installed on the valve 51 corresponding to the first pipeline 11 .

[0081] In addition, a second water pump 55 may be installed on the valve 51 corresponding to the third pipeline 13 .

[0082] Here, the first water pump 53 and the second water pump 55 may be disposed at positions facing each other with respect to the valve 51 .

[0083] In this embodiment, the valve 51 can selectively discharge the coolant selectively introduced from the second pipeline 12, the third pipeline 13, the fourth pipeline 14 or the sixth pipeline 16 through the first pipeline 11, the fourth pipeline 14 or the fifth pipeline 15 according to a selected mode in at least one mode.

[0084] Here, the at least one mode may include first to third modes.

[0085] In the first mode, the vehicle interior may be heated, and the battery module 10 may be cooled.

[0086] In the second mode, the temperature of the battery module 10 may be increased.

[0087] Furthermore, in the third mode, the vehicle interior may be heated, and the temperature of the battery module 10 may be increased.

[0088] In the following, reference is made to Figures 2 to 4 Operations and effects in various modes of a thermal management system for a vehicle according to an embodiment are described in detail.

[0089] First, refer to Figure 2 Operations in a first mode of the thermal management system for heating the vehicle interior and cooling the battery module 10 according to the embodiment will be described in detail.

[0090] Figure 2 is an operation diagram according to a first mode of a thermal management system for a vehicle according to an embodiment.

[0091] Reference Figure 2 In the first mode, the first line 11 may be connected to the second line 12 by operation of the valve 51 , so that the coolant cooled in the cooler 20 may be supplied to the battery module 10 .

[0092] Therefore, the first line 11 and the second line 12 may form an independent closed loop through which the coolant circulates by operation of the valve module 50 .

[0093] Here, the air conditioning unit 3 may be operated so that the refrigerant may be supplied to the cooler 20 through the refrigerant connecting line 5 .

[0094] Then, the cooler 20 may cool the introduced coolant through heat exchange with the refrigerant so that the low-temperature coolant may be supplied to the battery module 10 .

[0095] Furthermore, the third line 13 , the fourth line 14 , the fifth line 15 , and the sixth line 16 may be connected to each other by operation of the valve 51 , so that the coolant may flow along the third line 13 , the fourth line 14 , the fifth line 15 , and the sixth line 16 .

[0096] In this state, when the first water pump 53 and the second water pump 55 are each operated, the coolant passing through the battery module 10 along the first line 11 may flow into the cooler 20 and then be discharged through the second line 12 .

[0097] The coolant flowing along the second line 12 may flow into the first line 11 connected by the operation of the valve 51 .

[0098] In other words, when the first water pump 53 operates, the coolant may circulate along the first pipeline 11 and the second pipeline 12 .

[0099] At this time, the coolant cooled by heat exchanging with the low-temperature refrigerant while passing through the cooler 20 may be introduced into the battery module 10 by operations of the valve module 50 and the first water pump 53. Therefore, the battery module 10 may be cooled more effectively.

[0100] Meanwhile, when the second water pump 55 is operated, the coolant flowing from the valve module 50 to the fifth line 15 may pass through the cabin heater 40 and then be discharged to the sixth line 16 .

[0101] The coolant introduced into the valve 51 through the sixth line 16 may flow along the fourth line 14 connected by the valve 51 , and thus may pass through the battery heater 30 .

[0102] At this time, the battery heater 30 may operate to increase the temperature of the coolant by heating the introduced coolant. The temperature-increased coolant may be introduced into the valve module 50 along the third line 13 and then discharged to the fifth line 15 connected by the valve 51 .

[0103] In other words, the coolant heated while passing through the battery heater 30 may be supplied to the cabin heater 40 along the third line 13 and the fifth line 15 connected by the operation of the valve module 50 .

[0104] Therefore, the ambient air introduced from the outside may be converted into a high temperature state while passing through the vehicle interior heater 40 and then introduced into the vehicle interior, thereby achieving heating of the vehicle interior.

[0105] In other words, while the above-described process is repeatedly performed, the coolant cooled in the cooler 20 may cool the battery module 10 to prevent overheating.

[0106] In addition, when the coolant heated while passing through the battery heater 30 is supplied to the vehicle interior heater 40, the ambient air introduced into the HVAC module (not shown) can be converted into a high temperature state while passing through the vehicle interior heater 40 and then introduced into the vehicle interior, thereby achieving heating of the vehicle interior.

[0107] Reference Figure 3 The operation in the second mode for increasing the temperature of the battery module 10 in another embodiment is described in detail.

[0108] Figure 3 is an operation diagram according to a second mode of a thermal management system for a vehicle according to an embodiment.

[0109] Reference Figure 3In the second mode, the first line 11 , the second line 12 , the third line 13 , and the fourth line 14 may be connected to each other by operation of the valve 51 , so that the coolant heated in the battery heater 30 may be supplied to the battery module 10 .

[0110] Meanwhile, the fifth line 15 and the sixth line 16 may be closed by the operation of the valve module 50. In this case, the second water pump 55 may not operate.

[0111] Furthermore, the air conditioning unit 3 may not be operated. Therefore, the refrigerant connection line 5 may be closed.

[0112] Therefore, the first line 11 , the second line 12 , the third line 13 , and the fourth line 14 may form an independent closed loop through which the coolant circulates by operation of the valve module 50 .

[0113] In this state, when the first water pump 53 operates, the coolant discharged from the valve 51 to the first line 11 may pass through the battery module 10 along the first line 11 and then flow into the cooler 20 .

[0114] The coolant passing through the cooler 20 may flow into the valve 51 along the second line 12. Thereafter, the coolant may be discharged to the fourth line 14 connected by the valve 51. The coolant flowing along the fourth line 14 may pass through the battery heater 30.

[0115] At this time, the battery heater 30 may operate to increase the temperature of the coolant by heating the introduced coolant. The coolant with increased temperature may flow into the valve 51 along the third line 13. Thereafter, the coolant may be discharged to the first line 11 connected by the valve 51 and may be supplied to the battery module 10.

[0116] In this way, while the above-mentioned process is repeatedly performed, the coolant whose temperature is increased in the battery heater 30 may increase the temperature of the battery module 10 more quickly.

[0117] In addition, refer to Figure 4 The operation of the third mode for heating the vehicle interior and increasing the temperature of the battery module 10 according to the thermal management system is described in detail.

[0118] Figure 4 is an operation diagram according to a third mode of the thermal management system for a vehicle according to an embodiment.

[0119] Reference Figure 4 The first pipeline 11 , the second pipeline 12 , the third pipeline 13 , the fourth pipeline 14 , the fifth pipeline 15 and the sixth pipeline 16 may be interconnected by operation of the valve module 50 , so that the coolant heated in the battery heater 30 may be supplied to the battery module 10 and the cabin heater 40 .

[0120] In more detail, the second pipeline 12 may be connected to the fourth pipeline 14 by operation of the valve 51. The third pipeline 13 may be connected to the fifth pipeline 15 by operation of the valve 51.

[0121] In addition, the sixth pipeline 16 may be connected to the first pipeline 11 through the operation of the valve 51 .

[0122] Therefore, the first line 11 , the second line 12 , the third line 13 , the fourth line 14 , the fifth line 15 , and the sixth line 16 may form a closed loop through which the coolant circulates by operation of the valve module 50 .

[0123] In this state, when the first water pump 53 and the second water pump 55 are respectively operated, the coolant discharged from the valve 51 to the first line 11 may sequentially pass through the battery module 10 and the cooler 20 along the first line 11. Thereafter, the coolant may flow into the valve 51 along the second line 12.

[0124] At the same time, the air conditioning unit 3 may not be operated. Therefore, the refrigerant connecting line 5 may be closed.

[0125] The coolant introduced into the valve 51 along the second line 12 may be discharged to the fourth line 14. The coolant flowing along the fourth line 14 may pass through the battery heater 30.

[0126] At this time, the battery heater 30 may operate to increase the temperature of the coolant by heating the introduced coolant. The coolant with increased temperature may flow into the valve 51 along the third line 13 .

[0127] Then, the coolant introduced into the valve 51 along the third line 13 may be discharged to the fifth line 15 .

[0128] The coolant flowing along the fifth line 15 may pass through the cabin heater 40 and then flow along the sixth line 16 .

[0129] At this time, the ambient air introduced from the outside may be converted into a high temperature state while passing through the vehicle interior heater 40 and then introduced into the vehicle interior, thereby achieving heating of the vehicle interior.

[0130] Meanwhile, the coolant introduced into the valve 51 along the sixth line 16 from the cabin heater 40 may be discharged to the first line 11. The coolant discharged to the first line 11 may be supplied to the battery module 10.

[0131] As such, while repeatedly performing the above-described process, the coolant heated while passing through the battery heater 30 may first pass through the cabin heater 40 along the fifth line 15 connected to the third line 13 through the valve module 50 .

[0132] Then, the coolant passing through the cabin heater 40 may heat the vehicle interior while passing through the battery module 10 along the sixth line 16 and the first line 11 , while increasing the temperature of the battery module 10 .

[0133] Therefore, as described above, by applying a thermal management system for a vehicle according to an embodiment, the temperature of the battery module 10 can be adjusted using a cooler 20 and a battery heater 30 for heat exchange between a refrigerant and a coolant, and the coolant heated in the battery heater 30 can be used to perform heating of the vehicle interior, thereby improving the overall efficiency of the system.

[0134] Furthermore, according to the present invention, it is possible to achieve streamlining and simplification of the system by forming a plurality of coolant flow lines by a single valve 51 according to a selected mode of the vehicle, while reducing manufacturing costs by removing a PTC heater.

[0135] Furthermore, according to the embodiment, the optimal performance of the battery module 10 may be exerted by effectively adjusting the temperature of the battery module 10 , and the overall driving distance of the vehicle may be increased through effective management of the battery module 10 .

[0136] In addition, according to the embodiment, the manufacturing cost and weight can be reduced and the space utilization can be improved by simplifying the entire system.

[0137] While the invention has been described in conjunction with what are presently considered to be practical embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but rather is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

1. A thermal management system for a vehicle, comprising: a valve module configured to control the flow of the coolant according to at least one mode of regulating at least one of a temperature of the vehicle interior and a temperature of the battery module; a first pipeline provided with the battery module and including a first end connected to the valve module to selectively flow a coolant; a cooler connected to the second end of the first pipeline; a second line including a first end connected to the cooler and a second end connected to the valve module and configured to selectively flow a coolant; a third line including a first end connected to the valve module and a second end connected to the battery heater and configured to selectively flow a coolant; a fourth line including a first end connected to the battery heater and a second end connected to the valve module and configured to selectively flow a coolant; a fifth line including a first end connected to the valve module and a second end connected to the cabin heater and configured to selectively flow the coolant; as well as A sixth line includes a first end connected to the cabin heater and a second end connected to the valve module and is configured to selectively flow a coolant.

2. The thermal management system according to claim 1, wherein: The valve module comprises: a valve configured to control the flow of coolant; and At least one water pump is arranged on the valve.

3. The thermal management system according to claim 2, wherein: The at least one water pump comprises: a first water pump installed on the valve corresponding to the first pipeline; and A second water pump is installed on the valve corresponding to the fifth pipeline.

4. The thermal management system according to claim 3, wherein: The first water pump and the second water pump are arranged at positions facing each other with respect to the valve.

5. The thermal management system according to claim 2, wherein: The valve is configured to selectively discharge the coolant selectively introduced from the second line, the third line, the fourth line, or the sixth line through the first line, the fourth line, or the fifth line according to a selected mode among the at least one mode.

6. The thermal management system according to claim 1, wherein: The at least one mode comprises: A first mode for heating the vehicle interior and cooling the battery module; A second mode for increasing the temperature of the battery module; and The third mode is for heating the interior of the vehicle and increasing the temperature of the battery module.

7. The thermal management system according to claim 6, wherein: In the first mode: the first line is connected to the second line by operation of the valve module to form an independent closed loop through which a coolant circulates, so that the coolant cooled in the cooler is supplied to the battery module; The third pipeline, the fourth pipeline, the fifth pipeline, and the sixth pipeline are connected to each other through the operation of the valve module so that the coolant flows along the third pipeline, the fourth pipeline, the fifth pipeline, and the sixth pipeline; and The coolant heated while passing through the battery heater is supplied to the cabin heater along the third line and the fifth line connected by operation of the valve module.

8. The thermal management system according to claim 6, wherein: In the second mode: the first line, the second line, the third line, and the fourth line are connected to each other by operation of the valve module so that the coolant heated in the battery heater is supplied to the battery module; The fifth pipeline and the sixth pipeline are closed by operation of the valve module; and The first line, the second line, the third line, and the fourth line form an independent closed loop through which a coolant circulates through operation of the valve module.

9. The thermal management system according to claim 6, wherein: In the third mode: the first line, the second line, the third line, the fourth line, the fifth line, and the sixth line are connected to each other by operation of the valve module so that the coolant heated in the battery heater is supplied to the battery module and the cabin heater; and The coolant heated while passing through the battery heater passes through the cabin heater along the fifth line connected to the third line through the valve module, and then passes through the battery module along the sixth line and the first line.

10. The thermal management system according to claim 1, wherein: The cooler is connected to the air conditioning unit via a refrigerant connection line.

11. The thermal management system according to claim 10, wherein: The cooler is a water-cooled heat exchanger configured to perform heat exchange between a coolant introduced inside and a refrigerant supplied from the air conditioning unit.

12. The thermal management system according to claim 10, wherein: The air conditioning unit is configured to supply a low-temperature refrigerant to the cooler through the refrigerant connection line so that the battery module is cooled by the coolant after heat-exchanging with the low-temperature refrigerant in the cooler.

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