Heat exchange system for vehicles

Abstract

The present invention discloses a heat exchange system for a vehicle, which includes: a heat exchange module, which is arranged at the rear with the length direction of the vehicle body as the basis, and is formed by a plurality of plate-like plates with a plurality of through holes; a radiator, which is installed at the front with the length direction of the vehicle body as the basis; a heating, ventilation and air conditioning (HVAC) module, which is arranged at the rear with the length direction of the vehicle body as the basis, and includes an air-conditioning housing, in the interior of which an evaporator, an indoor condenser and an opening and closing door are arranged; an electric compressor; a rear drive motor, which is arranged at the rear with the length direction of the vehicle body as the basis; an automatic driving controller, which is arranged at the rear with the length direction of the vehicle body as the basis; and a switching valve, including a first valve arranged on a first refrigerant pipeline, a second valve arranged on a second refrigerant pipeline and a third valve arranged on a third refrigerant pipeline.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to and the benefit of Korean Patent Application No. 10-2020-0146178, filed on November 4, 2020, which is hereby incorporated by reference in its entirety. Technical Field

[0003] The present invention relates to a heat exchange system for a vehicle. Background Art

[0004] The content in the background art merely provides background information related to the present disclosure and may not constitute prior art.

[0005] Generally, an electric vehicle operates by using a driving motor that receives power from a battery module as a power source.

[0006] Electric vehicles do not emit carbon dioxide, are quiet, and their drive motors are more energy efficient than internal combustion engines. Therefore, electric vehicles have attracted much attention as an environmentally friendly vehicle.

[0007] The core technology for realizing the above-mentioned electric vehicles is the technology related to the battery module. In recent years, research on lightweighting, miniaturization and shortening of charging time of battery modules has been actively carried out.

[0008] Battery modules should be used in an optimal temperature environment to maintain optimal performance and long life.

[0009] However, under current circumstances, due to the heat generated by the battery module during operation and external temperature changes, it is difficult to use it in an optimal temperature environment.

[0010] In addition, electric vehicles do not have the waste heat source generated by combustion in the engine like internal combustion engines, so electric heating devices are used to heat the interior of the vehicle in winter.

[0011] In addition, electric vehicles need to be warmed up in cold weather to improve the charging / discharging performance of the battery, and therefore a separate coolant heating electric heater is provided.

[0012] In other words, the electric vehicle adopts a technology of operating a cooling / heating system for temperature control of the battery module separately from a cooling / heating system for vehicle interior air conditioning to maintain an optimal temperature environment of the battery module.

[0013] That is, the electric vehicle according to the related art has two independent cooling / heating systems, one for interior cooling and heating and the other for temperature control of the battery module.

[0014] The cooling / heating system of the electric vehicle according to the related art has disadvantages of an increased number of components, a large installation space, and an increased vehicle weight.

[0015] In electric vehicles according to the prior art, weight increase is directly related to fuel economy.

[0016] On the other hand, in recent years, autonomous driving controllers are being added not only to electric vehicles but also to general vehicles, and are a basic component of vehicle control.

[0017] Like the battery module, the autonomous driving controller also requires a cooling / heating system to keep the autonomous driving controller operating within a guaranteed temperature range.

[0018] In order to effectively cool and heat the autonomous driving controller as described above, a heater core is provided inside the HVAC (heat, ventilation, and air conditioning) module.

[0019] The heater core increases the temperature of air for air conditioning by exchanging heat between the coolant heated by the heater and the air flowing through the inside of the HVAC module.

[0020] In this case, the HVAC module is connected to the main heat exchanger, receiver-drier, expansion valve, accumulator, compressor, etc. through refrigerant lines.

[0021] An opening and closing door is provided inside the HVAC module, which controls the air passing through the evaporator to selectively flow into the indoor condenser and the heater core according to the cooling mode, heating mode, and dehumidification mode of the vehicle.

[0022] In the vehicle's heating mode, the shutter door opens, allowing outside air that has passed through the evaporator to flow into the interior condenser and heater core.

[0023] In contrast, in the cooling mode of the vehicle, the openable door closes the indoor condenser and heater core side, so that the outside air cooled while passing through the evaporator flows directly into the vehicle interior.

[0024] Most HVAC modules according to the prior art are installed as needed at the front of the vehicle where the engine compartment is installed based on the length direction of the vehicle body. When the HVAC module is installed at the rear of the vehicle where the trunk is located, the method of branching and extending the refrigerant pipeline from the cooling system installed in the engine compartment is inevitably adopted, which reduces the performance of the rear HVAC module and leads to reduced efficiency.

[0025] In view of the above shortcomings, it is necessary to research and develop a heat exchange system that improves the cooling and heating efficiency and performance of the HVAC module disposed at the rear of the vehicle and correspondingly the cooling efficiency and performance of the autonomous driving controller disposed at the rear of the vehicle.

[0026] The above information disclosed in this Background section is only for enhancement of understanding of the background of the disclosure 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

[0027] The present disclosure provides a heat exchange system for a vehicle, which can reduce packaging space by performing heat exchange among an HVAC module, an electric compressor, a rear drive motor, and an autonomous driving controller disposed at the rear of the vehicle through one heat exchange module.

[0028] An embodiment of the present disclosure provides a heat exchange system for a vehicle, comprising: a heat exchange module, which is arranged at the rear with the length direction of the vehicle as a reference, wherein a plurality of plate-like plates with a plurality of through holes overlap in a predetermined interval on the cross section and include a first heat exchange area and a second heat exchange area separated by the through holes, the first heat exchange area including a first coolant flow path, an oil flow path and a first refrigerant flow path, and the second heat exchange area including a second coolant flow path and a second refrigerant flow path; a radiator, which is installed at the front with the length direction of the vehicle body as a reference, and performs heat exchange when the first coolant circulating inside the radiator passes through the first coolant flow path; an HVAC (heating, ventilation and air conditioning) module, which is arranged at the rear with the length direction of the vehicle as a reference, an evaporator, an indoor condenser and an opening and closing door are provided inside the air-conditioning housing, and the opening and closing door is operated according to the cooling mode and the heating mode to control the direction of the indoor air; an electric compressor The refrigerant is discharged to the indoor condenser between the block and the HVAC module; a rear drive motor is arranged at the rear with the length direction of the vehicle as the basis, and wherein the cooling oil circulating inside the rear drive motor performs heat exchange with the first coolant when passing through the oil flow path; an automatic driving controller is arranged at the rear with the length direction of the vehicle as the basis, and wherein the second coolant circulating inside the automatic driving controller performs heat exchange with the second refrigerant when passing through the second coolant flow path; and a switching valve, including: a first valve, arranged on the first refrigerant pipeline between the indoor condenser and the first heat exchange area; a second valve, arranged on the second refrigerant pipeline between the first heat exchange area and the second heat exchange area, and connected to a branch pipeline branched from the third refrigerant pipeline; and a third valve, arranged on the third refrigerant pipeline connected to the electric compressor via the second heat exchange area and the evaporator, and connected to the fourth refrigerant pipeline branched from the third refrigerant pipeline.

[0029] The heat exchange module may be provided with a through hole formed on each plate along the length direction of the vehicle body, and mounted on the upper surface of the rear drive motor through a mounting bracket.

[0030] In the heat exchange module, a flange bent in one direction may be formed along an outer edge of each plate, and the first heat exchange region and the second heat exchange region may be separated by a diaphragm formed at a central portion in a length direction of each plate.

[0031] The first heat exchange area can be configured as a structure in which the first coolant circulates through the first coolant pipeline connecting the radiator and the first coolant flow path, the cooling oil circulates through the oil pipeline connecting the rear drive motor and the oil flow path, and the refrigerant circulates through the first refrigerant pipeline, so that heat exchange between the first coolant and the cooling oil can be performed through the refrigerant.

[0032] The second heat exchange area can be configured as such a structure, in which the second coolant circulates through the second coolant pipeline connecting the automatic driving controller and the second coolant flow path, the refrigerant flows in from the second refrigerant pipeline, and the refrigerant circulates through the third refrigerant pipeline and the fourth refrigerant pipeline, so that heat exchange of the second coolant can be performed by the refrigerant.

[0033] The first valve may be an expansion valve provided at an upper side of the heat exchange module to circulate the refrigerant discharged from the indoor condenser into the first refrigerant flow path.

[0034] The second valve may be an expansion valve provided adjacent to the first valve to connect the branch line connected to one side of the third refrigerant line and the second refrigerant line to each other to circulate the refrigerant.

[0035] The third valve may be an expansion valve disposed adjacent to the second valve to selectively circulate the refrigerant to the third refrigerant line and the fourth refrigerant line.

[0036] The electric compressor may be fastened to the housing of the rear drive motor at at least two points and may be fastened to the housing of the rear drive motor by a connection bracket that absorbs vibration of the vehicle body.

[0037] The autopilot controller may be fastened to one side of the upper surface of the rear cross member at at least two points.

[0038] When the automatic driving controller is cooled in the cooling mode of the vehicle, the first refrigerant can be circulated from the electric compressor to the indoor condenser; the first valve can be opened to circulate the first refrigerant to the first heat exchange area for heat exchange of the first coolant; the second valve can expand the first refrigerant to form the first refrigerant into a second refrigerant that is relatively colder than the first refrigerant, and can close the branch line and open the channel on the second heat exchange area side to circulate the second refrigerant to the second heat exchange area for heat exchange of the second coolant; and the third valve can close the fourth refrigerant pipeline, and can open the third refrigerant pipeline to circulate the second refrigerant to the evaporator.

[0039] When the automatic driving controller is cooled in the cooling mode off state and the heating mode off state of the vehicle, the first refrigerant can be circulated from the electric compressor to the indoor condenser; the first valve can be opened to circulate the first refrigerant to the first heat exchange area for heat exchange of the first coolant; the second valve can expand the first refrigerant to form the first refrigerant into a second refrigerant that is relatively colder than the first refrigerant, and can close the branch line and open the channel on the second heat exchange area side to circulate the second refrigerant to the second heat exchange area for heat exchange of the second coolant; and the third valve can close the third refrigerant pipeline and can open the fourth refrigerant pipeline to circulate the second refrigerant to the electric compressor.

[0040] When the automatic driving controller is cooled in the heating mode of the vehicle, the first refrigerant can be circulated from the electric compressor to the indoor condenser; the first valve can expand the first refrigerant to form the first refrigerant into a second refrigerant that is relatively colder than the first refrigerant, and the second refrigerant can be circulated to the first heat exchange area for heat exchange with the first coolant; the second valve can open the channel on the side of the second heat exchange area to circulate the second refrigerant to the second heat exchange area for heat exchange with the second coolant; and the third valve can close the third refrigerant pipeline and open the fourth refrigerant pipeline to circulate the second refrigerant to the electric compressor.

[0041] When cooling the automatic driving controller in the heating and dehumidification mode of the vehicle, the first refrigerant can be circulated from the electric compressor to the indoor condenser; the first valve can expand the first refrigerant to form the first refrigerant into a second refrigerant that is relatively colder than the first refrigerant, and the second refrigerant can be circulated to the first heat exchange area for heat exchange with the first coolant; the second valve can open the channel on the side of the second heat exchange area to circulate the second refrigerant to the second heat exchange area for heat exchange with the second coolant; and the third valve can close the fourth refrigerant pipeline and open the third refrigerant pipeline to circulate the second refrigerant to the evaporator.

[0042] When the automatic driving controller is not cooled in the cooling mode of the vehicle, the first refrigerant can be circulated from the electric compressor to the indoor condenser; the first valve can be opened to circulate the first refrigerant to the first heat exchange area for heat exchange of the first coolant; the second valve can close the channel on the second heat exchange area side and open the branch line to circulate the first refrigerant to the third refrigerant line through the branch line; and the third valve can expand the first refrigerant to form the first refrigerant into a second refrigerant that is relatively cooler than the first refrigerant, and can close the fourth refrigerant line and open the third refrigerant line to circulate the second refrigerant to the evaporator.

[0043] When the automatic driving controller is not cooled in the heating mode of the vehicle, the first refrigerant can be circulated from the electric compressor to the indoor condenser; the first valve can expand the first refrigerant to form the first refrigerant into a second refrigerant that is relatively colder than the first refrigerant, and the second refrigerant can be circulated to the first heat exchange area for heat exchange with the first coolant; the second valve can close the channel on the second heat exchange area side and open the branch line to circulate the second refrigerant to the third refrigerant line through the branch line; and the third valve can close the third refrigerant line on the evaporator side and open the fourth refrigerant line to circulate the second refrigerant to the electric compressor.

[0044] When the automatic driving controller is not cooled in the heating and dehumidification mode of the vehicle, the first refrigerant can be circulated from the electric compressor to the indoor condenser; the first valve can expand the first refrigerant to form the first refrigerant into a second refrigerant that is relatively colder than the first refrigerant, and the second refrigerant can be circulated to the first heat exchange area for heat exchange with the first coolant; the second valve can close the channel on the second heat exchange area side and open the branch line to circulate the second refrigerant to the third refrigerant line through the branch line; and the third valve can close the fourth refrigerant line and open the third refrigerant line to circulate the second refrigerant to the evaporator.

[0045] According to an embodiment of the present disclosure, a heat exchange system for a vehicle can reduce packaging space by performing heat exchange of an HVAC module, an electric compressor, a rear drive motor, and an autonomous driving controller disposed at the rear of the vehicle through one heat exchange module.

[0046] In other words, the heat exchange system for a vehicle can realize an independent refrigerant circuit by arranging the heat exchange module, HVAC module, electric compressor, rear drive motor, automatic driving controller and switching valve all at the rear of the vehicle.

[0047] In addition, according to the heat exchange system for a vehicle of the embodiment of the present disclosure, since the heat exchange module and the switching valve are modularized, the installation space can be reduced and the online working hours can be reduced.

[0048] In addition, the effects that can be obtained or expected from the embodiments of the present disclosure are directly or implicitly described in the following detailed description. That is, various effects expected from the embodiments of the present disclosure will be described in the following detailed description.

[0049] Further areas of applicability will become apparent from the description provided herein.It should be understood that the description and specific examples are intended for purposes of illustration only and are not intended to limit the scope of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] For a better understanding of the present disclosure, various embodiments of the present disclosure will now be described by way of example with reference to the accompanying drawings, in which:

[0051] Figure 1 A block diagram showing a heat exchange system for a vehicle according to an embodiment of the present disclosure;

[0052] Figure 2 A perspective view showing a heat exchange module applied to a heat exchange system for a vehicle according to an embodiment of the present disclosure;

[0053] Figure 3 is an exploded view showing a heat exchange module applied to a heat exchange system for a vehicle according to an embodiment of the present disclosure;

[0054] Figure 4 and Figure 5 A diagram illustrating an internal flow path of a heat exchange module applied to a heat exchange system for a vehicle according to an embodiment of the present disclosure is shown;

[0055] Figure 6 A diagram illustrating an installation of an electric compressor applied to a heat exchange system for a vehicle according to an embodiment of the present disclosure;

[0056] Figure 7 An installation diagram illustrating an automatic driving controller applied to a heat exchange system for a vehicle according to an embodiment of the present disclosure is shown;

[0057] Figure 8 A diagram illustrating a switching valve applied to a heat exchange system for a vehicle according to an embodiment of the present disclosure is shown;

[0058] Figure 9 A diagram illustrating operation of a heat exchange system for a vehicle according to an embodiment of the present disclosure when cooling an automatic driving controller in a cooling mode of the vehicle is shown;

[0059] Figure 10 A diagram illustrating an operation of a heat exchange system for a vehicle according to an embodiment of the present disclosure when cooling an automatic driving controller in a cooling mode off state and a heating mode off state of the vehicle is shown;

[0060] Figure 11 A diagram illustrating operation of a heat exchange system for a vehicle according to an embodiment of the present disclosure when cooling an automatic driving controller in a heating mode of the vehicle is shown;

[0061] Figure 12 A diagram illustrating operation of a heat exchange system for a vehicle according to an embodiment of the present disclosure when cooling an automatic driving controller in a heating and dehumidification mode of the vehicle is shown;

[0062] Figure 13 A diagram illustrating operation of a heat exchange system for a vehicle according to an embodiment of the present disclosure when the automatic driving controller is not cooled in a cooling mode of the vehicle is shown;

[0063] Figure 14 A diagram illustrating operation of a heat exchange system for a vehicle according to an embodiment of the present disclosure when the automatic driving controller is not cooled in a heating mode of the vehicle is shown; and

[0064] Figure 15 A diagram illustrating operation of a heat exchange system for a vehicle according to an embodiment of the present disclosure when the autonomous driving controller is not cooled in a heating and dehumidification mode of the vehicle is shown.

[0065] The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way.

[0066] <Description of Reference Numerals>

[0067] 1: Heat exchange system 3: High voltage battery

[0068] 5: Radiator 7: First electronic water pump

[0069] 10: Heat exchange module 10a: First heat exchange area

[0070] 10b: Second heat exchange area 13: Flange

[0071] 15: Diaphragm 17: Seal

[0072] 19: Connector 20: Cover

[0073] 21: Mounting bracket 23: Mounting hole

[0074] 25: First coolant hole 27: Oil hole

[0075] 29: Second coolant hole 30: First refrigerant hole

[0076] 31: Second refrigerant hole 40: First valve

[0077] 41: Second valve 43: Third valve

[0078] 45: Valve flange 47: Connecting pipe

[0079] 50: HVAC module 51: Air conditioning housing

[0080] 53: Evaporator 55: Indoor condenser

[0081] 57: Open and close door 60: Electric compressor

[0082] 61: Reducer 63: Connecting bracket

[0083] 65: Installation 70: Automatic driving controller

[0084] 71: Rear crossbeam 73: Second electronic water pump

[0085] 75: Fixed bracket 80: Rear drive motor

[0086] WL1: First coolant line WL2: Second coolant line

[0087] RL1: First refrigerant line RL2: Second refrigerant line

[0088] RL3: third refrigerant line RL4: fourth refrigerant line

[0089] OL: Oil pipeline L: Branch pipeline

[0090] WP1: First coolant flow path WP2: Second coolant flow path

[0091] OP: Oil flow path RP1: First refrigerant flow path

[0092] RP2: Second refrigerant flow path DETAILED DESCRIPTION

[0093] The following description is merely exemplary in nature and is not intended to limit the present disclosure, application, or uses. It should be understood that throughout the drawings, corresponding reference numerals indicate like or corresponding parts and features.

[0094] The present disclosure will be described more fully hereinafter with reference to the accompanying drawings, in which various embodiments of the present disclosure are shown. Those skilled in the art will appreciate that the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present disclosure.

[0095] In order to clearly describe the present disclosure, parts irrelevant to the description are omitted, and the same or similar constituent elements are denoted by the same reference numerals throughout the specification.

[0096] In the following description, since the names of components are the same as each other, the names of the components are divided into first, second, etc. for distinction, and the order thereof is not particularly limited.

[0097] Figure 1 A block diagram of a heat exchange system for a vehicle according to an embodiment of the present disclosure is shown.

[0098] Reference Figure 1 , the heat exchange system 1 for a vehicle according to one embodiment of the present disclosure may be applied to an electric vehicle equipped with an automatic driving controller 70 .

[0099] In the following, based on Figure 1 , the front side refers to the engine room side of the vehicle, and the rear side refers to the trunk side of the vehicle.

[0100] The electric vehicle is provided with a rear drive motor 80 that generates driving power and a high-voltage battery 3 that supplies power to the rear drive motor 80 so that the high-voltage battery 3 is charged for use.

[0101] Here, the high-voltage battery 3 may be provided as a battery pack in which a plurality of battery cells are densely stacked.

[0102] The rear drive motor 80 , which generates power from the high-voltage battery 3 , requires a cooling / heating system to operate within a certain temperature range.

[0103] Meanwhile, there is a trend that the automatic driving controller 70 is applied not only to electric vehicles but also to general vehicles.

[0104] The automatic driving controller 70 is a safety control system for improving the safety and convenience of the driver, and is a device that enables automatic driving to a destination without driver manipulation.

[0105] A vehicle equipped with such an automatic driving controller 70 is configured to control driving in response to signal information provided through one-to-one wireless communication with a signal transmitter installed on a road.

[0106] In this case, since the automatic driving controller 70 is an essential component of vehicle control, it is necessary to be provided with a cooling / heating system to operate within a guaranteed temperature range, like the rear drive motor 80 .

[0107] The automatic driving controller 70 and the rear drive motor 80 as described above may be cooled and heated by an HVAC (Heating Ventilation and Air Conditioning) module 50 as an air conditioning system of the vehicle.

[0108] The automatic driving controller 70 and the rear drive motor 80 applied to one embodiment of the present disclosure are located at the rear of the vehicle provided with a rear wheel base (not shown) based on the longitudinal direction of the vehicle body.

[0109] Additionally, an HVAC module 50 is located at the rear of the vehicle.

[0110] A heat exchange system 1 for a vehicle for realizing heat exchange between an automatic driving controller 70 and a rear drive motor 80 according to an embodiment of the present disclosure, including the vehicle air conditioning system as described above, includes a heat exchange module 10, an HVAC module 50, an electric compressor 60, an automatic driving controller 70, a rear drive motor 80 and switching valves 40, 41, 43.

[0111] The heat exchange module 10 may be connected to a radiator 5 located at a front portion corresponding to an engine room of a vehicle through a first coolant line WL1.

[0112] In this case, the first electronic water pump 7 is installed on the first coolant line WL1.

[0113] In addition, the heat exchange module 10 may be connected to the rear drive motor 80 through an oil line L8.

[0114] In addition, the heat exchange module 10 may be connected to the automatic driving controller 70 through a second coolant line WL2.

[0115] In this case, the second electronic water pump 73 is installed on the second coolant line WL2 between the heat exchange module 10 and the automatic driving controller 70 .

[0116] The heat exchange module 10 may be divided into a first heat exchange region 10a and a second heat exchange region 10b by the diaphragm 15 and corresponding through holes, which will be described in detail below.

[0117] Figure 2 A perspective view showing a heat exchange module applied to a heat exchange system for a vehicle according to an embodiment of the present disclosure is shown. Figure 3 is an exploded view illustrating a heat exchange module applied to a heat exchange system for a vehicle according to an embodiment of the present disclosure.

[0118] Reference Figure 2 and Figure 3 In one embodiment of the present disclosure, the heat exchange module 10 is disposed at the rear center portion based on the longitudinal direction of the vehicle body.

[0119] The heat exchange module 10 is formed by overlapping a plurality of plate-like plates P1 to P12 having a plurality of through holes in predetermined sections on a cross section.

[0120] In this case, the heat exchange module 10 is installed so that the through-hole of each of the plates P1 to P12 is arranged along the length direction of the vehicle body.

[0121] In addition, in the heat exchange module 10 , the diaphragm 15 is formed at the central portion in the length direction of each of the plates P1 to P12 .

[0122] The plates P1 to P12 are formed in a rectangular shape, and outer edges thereof are bent in one direction to form flanges 13 .

[0123] The panels P1 to P12 are assembled in the same direction so that the respective flanges 13 overlap, and for this purpose, the flanges 13 are formed to have a tapered shape that flares toward the outside.

[0124] For example, 12 plates P1 to P12 are overlapped to form the heat exchange module 10. The number of plates can be changed as needed to adjust the widthwise thickness of the heat exchange module 10, that is, the length of the flow path of the coolant or oil flowing inside the heat exchange module.

[0125] In addition, each of the plates P1 to P12 has a plurality of through holes formed at predetermined positions on its cross section.

[0126] In this case, through holes ranging from a minimum of 4 to a maximum of 8 may be formed at predetermined positions of each of the boards P1 to P12.

[0127] Among the plates P1 to P12 , one plate at the front side into which coolant or oil flows is defined as a first plate P1 , and one plate at the rear side into which refrigerant flows is defined as a twelfth plate P12 , and thus, they are defined in order from front to rear.

[0128] Through holes are formed at the same positions in the first plate P1 and the second plate P2.

[0129] Specifically, in the first plate P1 and the second plate P2, four through holes are formed in a region corresponding to the first heat exchange region 10a, and two through holes are formed in a region corresponding to the second heat exchange region 10b, forming a total of six through holes.

[0130] In addition, first to third nipples 19a, 19b, 19c into which the first coolant, oil, and second coolant flow in are directly mounted on the first plate P1.

[0131] Here, the first coolant may be set to have a temperature relatively higher than that of the second coolant.

[0132] Four through holes formed at positions corresponding to the first heat exchange area 10a in the first and second plates P1 and P2 are formed at respective corners of the first heat exchange area 10a and include two first coolant holes 25 through which the first coolant circulates and two oil holes 27 through which oil circulates.

[0133] In this case, the first coolant holes 25 and the oil holes 27 are arranged alternately with each other.

[0134] In addition, two through holes formed at positions corresponding to the second heat exchange area 10b in the first and second plates P1 and P2 are formed at respective corners facing each other in the second heat exchange area 10b and include two second coolant holes 29 through which the second coolant circulates.

[0135] In addition, through holes are formed at the same positions in the third to sixth plates P3 to P6.

[0136] Specifically, in the third to sixth plates P3 to P6, four through holes are formed in the region corresponding to the first heat exchange area 10a, and four through holes are formed in the region corresponding to the second heat exchange area 10b, for a total of eight through holes.

[0137] The four through holes formed at positions corresponding to the first heat exchange area 10a in the third to sixth plates P3 to P6 are formed at the same positions as the first coolant holes 25 and the oil holes 27 formed in the first and second plates P1 and P2 so that the first coolant and oil circulate therethrough, respectively.

[0138] In addition, the four through holes formed at the positions corresponding to the second heat exchange area 10b in the third plate P3 to the sixth plate P6 are formed at the same positions as the second coolant holes 29 formed in the first plate P1 and the second plate P2, and include two second coolant holes 29 through which the second coolant circulates and two second refrigerant holes 31 through which the second refrigerant flowing in from the side of the twelfth plate P12 described later circulates.

[0139] In this case, the two second coolant holes 29 and the two second refrigerant holes 31 are arranged alternately with each other.

[0140] In addition, first coolant holes 25 through which the first coolant passes are formed at positions corresponding to the first heat exchange areas 10a in the seventh plate P7, but oil holes 27 through which oil passes are removed, so the seventh plate is configured to change the inflow direction of oil.

[0141] In addition, second coolant holes 29 through which the second coolant passes and second coolant holes 31 through which the second refrigerant passes are formed at positions corresponding to the second heat exchange regions 10 b in the seventh plate P7 .

[0142] In addition, through holes are formed at the same positions in the eighth to eleventh plates P8 to P11 .

[0143] Specifically, in the eighth to eleventh plates P8 to P11 , four through holes are formed in the region corresponding to the first heat exchange region 10 a , and four through holes are formed in the region corresponding to the second heat exchange region 10 b , for a total of eight through holes.

[0144] The four through holes formed at positions corresponding to the first heat exchange area 10a in the eighth to eleventh plates P8 to P11 are formed at respective corners and include two first coolant holes 25 through which the first coolant circulates and two first refrigerant holes 30 through which the refrigerant flowing in from the twelfth plate P12 described later circulates.

[0145] The refrigerant includes a first refrigerant and a second refrigerant, and it is advantageous that the first refrigerant is arranged to have a higher temperature and pressure than the second refrigerant.

[0146] That is, the first refrigerant includes a high-temperature and high-pressure refrigerant, and the second refrigerant includes a low-temperature and low-pressure refrigerant.

[0147] In this case, the first coolant holes 25 and the first refrigerant holes 30 are alternately arranged with each other.

[0148] The first coolant holes 25 on the eighth to eleventh plates P8 to P11 are connected to the first coolant holes 25 formed in the first to seventh plates P1 to P7, and the first refrigerant holes 30 are located at the same positions as the oil holes 27 formed in the first to sixth plates P1 to P6, but the oil holes 27 and the first refrigerant holes 30 are blocked from each other by the seventh plate P7.

[0149] In addition, four through holes formed at positions corresponding to the second heat exchange area 10b in the eighth plate P8 to the eleventh plate P11 are formed at each corner of the second heat exchange area 10b, and include second refrigerant holes 31 through which the second refrigerant flowing in from the twelfth plate P12 side circulates and second coolant holes 29 through which the second coolant flowing in from the first plate P1 side circulates.

[0150] In addition, in the twelfth plate P12, first refrigerant holes 30 through which refrigerant passes are formed at positions corresponding to the first heat exchange area 10a and second refrigerant holes 31 through which refrigerant passes are formed at positions corresponding to the second heat exchange area 10b.

[0151] In addition, the first coolant holes 25 through which the first coolant passes and the second coolant holes 29 through which the second coolant passes are removed from the twelfth plate P12 , so the inflow directions of the first coolant and the second coolant can be switched through the twelfth plate P12 .

[0152] In addition, the sealing members 17 are alternately installed in each through-hole of the first to twelfth plates P1 to P12 as described above.

[0153] For example, the seal 17 is mounted on each of the first coolant holes 25 formed in the second plate P2 , the fourth plate P4 , the sixth plate P6 , the eighth plate P8 , and the tenth plate P10 .

[0154] A seal 17 is mounted on each of the oil holes 27 formed in the first plate P1 , the third plate P3 , and the fifth plate P5 .

[0155] The seal 17 is mounted on each of the second coolant holes 29 formed in the second plate P2 , the fourth plate P4 , the sixth plate P6 , the eighth plate P8 , and the tenth plate P10 .

[0156] A seal 17 is mounted on each of the first refrigerant holes 30 formed in the ninth plate P9 and the eleventh plate P11 .

[0157] Finally, the seal 17 is mounted on each of the second refrigerant holes 31 formed in the third plate P3 , the fifth plate P5 , the seventh plate P7 , the ninth plate P9 , and the eleventh plate P11 .

[0158] The seal 17 may be formed to correspond to the gap between the adjacent plates, and the respective flow paths may be formed and divided in a specific direction by the seal 17 .

[0159] In addition, a cover 20 is installed at the rear of the twelfth board P12.

[0160] Figure 4 and Figure 5 A view illustrating an internal flow path of a heat exchange module applied to a heat exchange system for a vehicle according to an embodiment of the present disclosure is shown.

[0161] Reference Figure 4 and Figure 5 , the heat exchange module 10 has a structure in which a plurality of plates P1 to P12 selectively formed with a plurality of through holes are overlapped and assembled as described above, and five flow paths are formed within the structure.

[0162] The five flow paths include a first coolant flow path WP1 , a second coolant flow path WP2 , an oil flow path OP, a first refrigerant flow path RP1 , and a second refrigerant flow path RP2 .

[0163] The first coolant flow path WP1 is a flow path in which the first coolant flowing in from the radiator 5 circulates through the first joint 19a installed on the first plate P1 corresponding to the first heat exchange area 10a.

[0164] The first coolant flow path WP1 has a structure in which the first coolant flows from the first plate P1 side through the first coolant holes 25 and moves to the eleventh plate P11 , and changes direction through the twelfth plate P12 to return to the first plate P1 side.

[0165] In this case, the first coolant exchanges heat with the first refrigerant flowing in from the twelfth plate P12 side corresponding to the first heat exchange region 10 a to be cooled.

[0166] The oil flow path OP is a flow path in which the oil passing through the rear drive motor 80 circulates through the second joint 19b installed on the first plate P1 corresponding to the first heat exchange area 10a.

[0167] The oil flow path OP has a structure in which oil flows from the first plate P1 side through the oil hole 27 and moves to the sixth plate P6 , and changes direction through the seventh plate P7 to return to the first plate P1 side.

[0168] In this case, the oil circulating through the oil flow path OP exchanges heat with the cooled first coolant to be cooled.

[0169] The second coolant flow path WP2 is a flow path in which the second coolant passing through the automatic driving controller 70 circulates through the third joint 19c installed corresponding to the second heat exchange area 10b on the first plate P1.

[0170] The second coolant flow path WP2 has a structure in which the second coolant flows from the first plate P1 side through the second coolant holes 29 and moves to the eleventh plate P11 , and changes direction through the twelfth plate P12 to return to the first plate P1 side.

[0171] In this case, the second coolant exchanges heat with the second refrigerant flowing in from the twelfth plate P12 side corresponding to the second heat exchange region 10 b to be cooled.

[0172] In addition, the first refrigerant flow path RP1 is a flow path through which the first refrigerant flowing in through the valve flange 45 installed on the cover 20 corresponding to the first heat exchange area 10a circulates.

[0173] The first refrigerant flow path RP1 has a structure in which the first refrigerant flows from the twelfth plate P12 side through the first refrigerant holes 30 and moves to the eighth plate P8, and switches direction through the seventh plate P7 to return to the twelfth plate P12 side.

[0174] In addition, the second refrigerant flow path RP2 is a flow path through which the second refrigerant flowing in through the valve flange 45 installed on the cover 20 corresponding to the second heat exchange area 10b circulates.

[0175] The second refrigerant flow path RP2 has a structure in which the second refrigerant flows from the twelfth plate P12 side through the second refrigerant holes 31 and moves to the third plate P3, and changes direction through the second plate P2 to return to the twelfth plate P12 side.

[0176] The heat exchange module 10 as described above may be mounted on a vehicle body via a mounting bracket 21 surrounding one side of the exterior.

[0177] In the mounting bracket 21, the surface on the cover 20 side is open, the surfaces on the joint 19a, 19b and 19c side are closed, and a mounting hole 23 (see FIG. Figure 3 ) so that connectors 19a, 19b and 19c can be installed.

[0178] In the embodiment of the present disclosure, the HVAC module 50 is provided on one side of the heat exchange module 10 in the vehicle width direction (see FIG. Figure 1 ).

[0179] For example, it may be advantageous for the HVAC module 50 to be located to the right of the heat exchange module 10 while pointing toward the front of the vehicle.

[0180] The HVAC module 50 includes an evaporator 53 , an indoor condenser 55 , and an opening and closing door 57 inside an air conditioning casing 51 .

[0181] The HVAC module 50 may operate the door 57 to control the direction of indoor air according to a cooling mode and a heating mode.

[0182] The HVAC module 50 may be provided at an upper portion of the wheel housing on the rear side and fastened at at least two points.

[0183] Figure 6 A diagram illustrating the installation of an electric compressor applied to a heat exchange system for a vehicle according to an embodiment of the present disclosure.

[0184] Reference Figure 6 In an embodiment of the present disclosure, the electric compressor 60 is used to compress the refrigerant between the heat exchange module 10 and the HVAC module 50 and discharge the refrigerant to the indoor condenser 55 .

[0185] The electric compressor 60 is connected between the evaporator 53 and the indoor condenser 55 through a third refrigerant line RL3 .

[0186] That is, the electric compressor 60 serves to compress the refrigerant supplied from the evaporator 53 and then discharge it to the indoor condenser 55 .

[0187] In addition, the refrigerant condensed from the indoor condenser 55 is supplied to the heat exchange module 10 through the first refrigerant line RL1 to exchange heat with the coolant or oil inside the heat exchange module 10 .

[0188] In addition, the electric compressor 60 is fastened at at least three points to the housing of the rear drive motor 80 and the speed reducer 61 provided adjacent to the rear drive motor 80 .

[0189] In this case, the electric compressor 60 may use a separate connection bracket 63 and may be fastened by the connection bracket 63 to facilitate vibration.

[0190] Accordingly, since the speed reducer 61 and the rear drive motor 80 are fixed to the mounting member that mainly absorbs vibration of the vehicle body, when the electric compressor 60 is fixed to the speed reducer 61 and the rear drive motor 80 , it is possible to advantageously prevent vehicle vibration.

[0191] That is, the vibration mainly absorbed by the speed reducer 61 and the rear drive motor 80 is transmitted to the electric compressor 60 .

[0192] Figure 7 An installation diagram illustrating an automatic driving controller applied to a heat exchange system for a vehicle according to an embodiment of the present disclosure is shown.

[0193] Reference Figure 7In an embodiment of the present disclosure, the automatic driving controller 70 is disposed on the other side of the heat exchange module 1 in the vehicle width direction.

[0194] For example, it is advantageous for the autonomous driving controller 70 to be located to the left of the heat exchange module 10 while pointing toward the front of the vehicle.

[0195] The automatic driving controller 70 is connected to the heat exchange module 10 through a second coolant line WL2.

[0196] The second coolant circulating inside the automatic driving controller 70 may exchange heat with the second refrigerant while passing through the second coolant flow path WP2 .

[0197] The automatic driving controller 70 is fastened to one side of the upper surface of the rear cross member 71 at at least two points.

[0198] In this case, the second electronic water pump 73 is installed at a position adjacent to the automatic driving controller 70 on the other side of the upper surface of the rear cross member 71 .

[0199] Furthermore, the second electronic water pump 73 may be fastened at at least two points by a fixing bracket 75 .

[0200] Here, the automatic driving controller 70 and the second electronic water pump 73 are described as being installed on the rear cross beam 71 of the vehicle, but the present disclosure is not limited to this. If it is located on the left rear side (LH) of the vehicle and has an installation structure that enables heat exchange between the second coolant and the refrigerant, it can be applied.

[0201] In the embodiment of the present disclosure, the rear drive motor 80 is disposed at the rear of the vehicle body with respect to the longitudinal direction of the vehicle body.

[0202] The rear drive motor 80 is connected to the heat exchange module 10 through an oil line OL.

[0203] The cooling oil circulating inside the rear drive motor 80 may exchange heat with the first coolant while passing through the oil flow path OP via the oil line OL.

[0204] Figure 8 A view is shown for explaining a switching valve applied to a heat exchange system for a vehicle according to an embodiment of the present disclosure.

[0205] Reference Figure 8 In an embodiment of the present disclosure, the switching valve includes first to third valves 40 , 41 , and 43 , and is installed on one side of the heat exchange module 10 .

[0206] The first to third valves 40 , 41 , 43 are connected to a valve flange 45 on the cover 20 via a connecting pipe 47 .

[0207] Four valve flanges 45 may be formed and connected to the first to third valves 40 , 41 , 43 through connecting pipes 47 .

[0208] The first to third valves 40 , 41 , 43 operate to circulate the first refrigerant and the second refrigerant to the heat exchange module 10 .

[0209] The first valve 40 is located at an upper side of the heat exchange module 10 to be installed on the first refrigerant line RL1 between the indoor condenser 55 and the first heat exchange area 10 a .

[0210] The first valve 40 controls to move the first refrigerant discharged from the indoor condenser 55 into the first heat exchange region 10 a of the heat exchange module 10 .

[0211] In this case, the first refrigerant moving through the first valve 40 circulates in the heat exchange module 10a along the first refrigerant flow path RP1.

[0212] The first refrigerant flow path RP1 is connected to the eighth plate P8 from the twelfth plate P12 side and is switched in direction by the seventh plate P7 to return to the twelfth plate P12 side again.

[0213] The first refrigerant is used for heat exchange between the oil and the first coolant, and the first valve 40 includes an expansion valve as a two-way valve.

[0214] In addition, the second valve 41 is arranged on the second refrigerant pipeline RL2 between the first heat exchange area 10a and the second heat exchange area 10b, and one side is connected to the first refrigerant flow path RP1 of the first heat exchange area 10a through a connecting pipe 47, and the other side is connected to the second refrigerant flow path RP2 of the second heat exchange area 10b through a connecting pipe 47.

[0215] The second valve 41 connects the second refrigerant line RL2 and a branch line L branched from the third refrigerant line RP3 .

[0216] In addition, the second valve 41 is provided adjacent to the first valve 40 .

[0217] The second valve 41 may be an expansion valve as a three-way valve to connect the second refrigerant line RL2 and a branch line L connected to one side of the third refrigerant line RL3 to each other to circulate the second refrigerant.

[0218] In addition, the third valve 43 connects the third refrigerant line RL3 between the second heat exchange area 10 b and the electric compressor 60 and the fourth refrigerant line RL4 branched from the third refrigerant line RL3 and connected to the evaporator 53 to each other.

[0219] In addition, the third valve 43 is provided adjacent to the second valve 41 .

[0220] In this case, the second refrigerant moving through the third valve 43 circulates through the second refrigerant flow path RP2 of the heat exchange module 10, wherein the second refrigerant flow path RP2 is connected to the third plate P3 from the twelfth plate P12 side and changes direction through the second plate P2 to return to the twelfth plate P12 side again.

[0221] The third valve 43 may be an expansion valve as a three-way valve to selectively circulate the refrigerant to the third and fourth refrigerant lines RL3 and RL4 .

[0222] Hereinafter, the operation of the heat exchange system for the vehicle will be described for each mode of the vehicle.

[0223] Figures 9 to 15 Views are shown for explaining operations of respective modes of a heat exchange system for a vehicle according to an embodiment of the present disclosure.

[0224] Hereinafter, for better understanding of the description, the first refrigerant will be expressed as a high-temperature and high-pressure refrigerant, and the second refrigerant will be expressed as a low-temperature and low-pressure refrigerant.

[0225] Figure 9 A case where the automatic driving controller 70 is cooled in the cooling mode of the vehicle is shown.

[0226] The high-temperature and high-pressure refrigerant is circulated from the electric compressor 60 to the indoor condenser 55 ( S1 ).

[0227] The first valve 40 is opened to circulate the high-temperature and high-pressure refrigerant to the first heat exchange region 10a to perform heat exchange between the first coolant and the oil (S2).

[0228] The second valve 41 expands the refrigerant to form the high-temperature and high-pressure refrigerant into the low-temperature and low-pressure refrigerant.

[0229] In this case, the second valve 41 closes the branch line L and opens the passage on the second heat exchange area 10b side to circulate the low-temperature and low-pressure refrigerant to the second heat exchange area 10b through the second refrigerant line RL2 for heat exchange with the second coolant (S3).

[0230] The third valve 43 closes the fourth refrigerant line RL4 .

[0231] The third valve 43 opens the third refrigerant line RL3 to circulate the low-temperature and low-pressure refrigerant to the evaporator 53 ( S4 ).

[0232] At the same time, the opening and closing door 57 opens the evaporator 53 side.

[0233] As described above, the cooling mode can be achieved by supplying cool air to the vehicle interior through the low-temperature, low-pressure refrigerant flowing in through the third refrigerant line RL3 and the operation of the door 57 while cooling the automatic driving controller 70 through heat exchange with the second coolant.

[0234] Figure 10 The case where the automatic driving controller 70 is cooled in the cooling mode off state and the heating mode off state of the vehicle is shown.

[0235] The high-temperature and high-pressure refrigerant circulates from the electric compressor 60 to the indoor condenser 55 .

[0236] The first valve 40 is opened to circulate the high-temperature and high-pressure refrigerant to the first heat exchange region 10a to perform heat exchange between the first coolant and the oil (S2).

[0237] The second valve 41 expands the refrigerant to form the high-temperature and high-pressure refrigerant into the low-temperature and low-pressure refrigerant.

[0238] The second valve 41 closes the branch line L and opens the passage on the second heat exchange area 10b side to circulate the low-temperature and low-pressure refrigerant to the second heat exchange area 10b for heat exchange with the second coolant (S3).

[0239] The third valve 43 closes the third refrigerant line RL3 and opens the fourth refrigerant line RL4 .

[0240] In this case, low-temperature and low-pressure refrigerant circulates to the electric compressor 60 .

[0241] At the same time, the opening and closing door 57 blocks the indoor condenser 55 side so that hot air does not flow into the vehicle interior.

[0242] As described above, regardless of the cooling mode or the heating mode, the third refrigerant line RL3 may be closed to cool the automatic driving controller 70 through heat exchange with the second coolant.

[0243] Figure 11 The case where the automatic driving controller 70 is cooled in the heating mode of the vehicle is shown.

[0244] The high-temperature and high-pressure refrigerant is circulated from the electric compressor 60 to the indoor condenser 55 ( S1 ).

[0245] The first valve 40 expands the refrigerant to form the high-temperature and high-pressure refrigerant into the low-temperature and low-pressure refrigerant.

[0246] The low-temperature and low-pressure refrigerant is circulated to the first heat exchange region 10a to perform heat exchange between the first coolant and the oil (S2).

[0247] The second valve 41 closes the branch line L and opens the passage on the second heat exchange area 10b side.

[0248] The low-temperature and low-pressure refrigerant is circulated to the second heat exchange region 10b to perform heat exchange with the second coolant (S3).

[0249] The third valve 43 closes the third refrigerant line RL3 and opens the fourth refrigerant line RL4 to circulate the low-temperature and low-pressure refrigerant to the electric compressor 60 ( S4 ).

[0250] At the same time, the opening and closing door 57 opens the indoor condenser 55 side.

[0251] As described above, the heating mode can be realized by supplying hot air into the vehicle interior through the operation of opening and closing the door 57 while cooling the automatic driving controller 70 through heat exchange with the second coolant.

[0252] Figure 12 The case of cooling the automatic driving controller 70 in the heating and dehumidification mode of the vehicle is shown.

[0253] The high-temperature and high-pressure refrigerant is circulated from the electric compressor 60 to the indoor condenser 55 ( S1 ).

[0254] The first valve 40 expands the refrigerant to form the high-temperature and high-pressure refrigerant into the low-temperature and low-pressure refrigerant.

[0255] The low-temperature and low-pressure refrigerant is circulated to the first heat exchange region 10a to perform heat exchange between the first coolant and the oil (S2).

[0256] The second valve 41 opens the passage on the second heat exchange area 10b side.

[0257] The low-temperature and low-pressure refrigerant is circulated to the second heat exchange region 10b to perform heat exchange with the second coolant (S3).

[0258] The third valve 43 closes the fourth refrigerant line RL4 and opens the third refrigerant line RL3 to circulate the low-temperature and low-pressure refrigerant to the evaporator 53 ( S4 ).

[0259] Low-temperature and low-pressure refrigerant may circulate in the evaporator 53 to perform an operation in a dehumidification mode.

[0260] At the same time, the opening and closing door 57 opens the indoor condenser 55 side.

[0261] As described above, while the automatic driving controller 70 can be cooled by heat exchange with the second coolant, the outside air passes through the low-temperature, low-pressure refrigerant in the evaporator 53 and then passes through the high-temperature, high-pressure refrigerant in the indoor condenser 55 to be supplied to the interior of the vehicle, thereby realizing heating mode and dehumidification mode.

[0262] Figure 13A case where the automatic driving controller 70 is not cooled in the cooling mode of the vehicle is shown.

[0263] The high-temperature and high-pressure refrigerant is circulated from the electric compressor 60 to the indoor condenser 55 ( S1 ).

[0264] The first valve 40 is opened to circulate the high-temperature and high-pressure refrigerant to the first heat exchange region 10a to perform heat exchange between the first coolant and the oil (S2).

[0265] The second valve 41 closes the passage on the second heat exchange area 10b side and opens the branch line L (S3).

[0266] The high-temperature and high-pressure refrigerant circulates through the branch line L to the third refrigerant line RL3.

[0267] The third valve 43 expands the refrigerant to form the high-temperature and high-pressure refrigerant into the low-temperature and low-pressure refrigerant.

[0268] The third valve 43 closes the fourth refrigerant line RL4 and opens the third refrigerant line RL3 to circulate the low-temperature and low-pressure refrigerant to the evaporator 53 ( S4 ).

[0269] At the same time, the opening and closing door 57 opens the evaporator 53 side.

[0270] As described above, the cooling mode can be achieved by supplying cool air into the vehicle interior without heat exchange with the automatic driving controller 70.

[0271] Figure 14 A mode is shown in which the autonomous driving controller 70 is not cooled in the vehicle's heating mode.

[0272] The high-temperature and high-pressure refrigerant is circulated from the electric compressor 60 to the indoor condenser 55 ( S1 ).

[0273] The first valve 40 expands the refrigerant to form the high-temperature and high-pressure refrigerant into the low-temperature and low-pressure refrigerant.

[0274] The low-temperature and low-pressure refrigerant is circulated to the first heat exchange region 10a to perform heat exchange between the first coolant and the oil (S2).

[0275] The second valve 41 closes the passage on the second heat exchange area 10b side and opens the branch line L (S3).

[0276] The low-temperature and low-pressure refrigerant circulates to the third refrigerant line RL3 through the branch line L.

[0277] The third valve 43 closes the third refrigerant line RL3 on the evaporator 53 side and opens the fourth refrigerant line RL4 to circulate the low-temperature and low-pressure refrigerant to the electric compressor 60 ( S4 ).

[0278] At the same time, the opening and closing door 57 opens the indoor condenser 55 side.

[0279] As described above, the heating mode can be achieved by supplying hot air into the vehicle interior without heat exchange with the automatic driving controller 70.

[0280] Figure 15 A mode is shown in which the autonomous driving controller 70 is not cooled in the vehicle's heating and dehumidification modes.

[0281] The high-temperature and high-pressure refrigerant is circulated from the electric compressor 60 to the indoor condenser 55 ( S1 ).

[0282] The first valve 40 expands the refrigerant to form the high-temperature and high-pressure refrigerant into the low-temperature and low-pressure refrigerant.

[0283] The low-temperature and low-pressure refrigerant is circulated to the first heat exchange region 10a to perform heat exchange between the first coolant and the oil (S2).

[0284] The second valve 41 closes the passage on the second heat exchange area 10b side and opens the branch line L (S3).

[0285] The low-temperature and low-pressure refrigerant circulates to the third refrigerant line RL3 through the branch line L.

[0286] The third valve 43 closes the fourth refrigerant line RL4 and opens the third refrigerant line RL3 to circulate the low-temperature and low-pressure refrigerant to the evaporator 53 ( S4 ).

[0287] At the same time, the opening and closing door 57 opens the indoor condenser 55 side.

[0288] As described above, after passing through the low-temperature and low-pressure refrigerant in the evaporator 53 , the outside air passes through the indoor condenser 55 and is supplied to the interior of the vehicle, so the heating mode and the dehumidification mode can be achieved without heat exchange with the automatic driving controller 70 .

[0289] Therefore, the heat exchange system for a vehicle according to one embodiment of the present disclosure can reduce packaging space by performing heat exchange of an HVAC module, an electric compressor, a rear drive motor, and an autonomous driving controller through one heat exchange module.

[0290] In other words, a heat exchange system for a vehicle can reduce packaging space by heat-exchanging four fluids with one heat exchange module.

[0291] In addition, heat exchange of the cooling oil can be achieved through the heat exchange module, which is essential for oil-cooled drive motors developed based on high-performance drive motors applied to electric vehicles.

[0292] In addition, a heat exchange system for a vehicle according to an embodiment of the present disclosure can realize an independent refrigerant circuit by arranging the heat exchange module, HVAC module, electric compressor, automatic driving controller, rear drive motor and switching valve all at the rear of the vehicle.

[0293] In addition, according to the heat exchange system for a vehicle according to an embodiment of the present disclosure, since the heat exchange module and the switching valve are modularized, the installation space can be reduced and the online working hours can be reduced.

[0294] In addition, according to an embodiment of the present disclosure, a heat exchange system for a vehicle can improve fuel economy because the heat exchange of the automatic driving controller can be independently controlled for each of the vehicle's cooling mode, heating mode, and dehumidification mode.

[0295] While the disclosure has been described in connection with what is presently considered to be practical forms, it should be understood that the disclosure is not limited to the forms disclosed, but on the contrary is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the disclosure.

Claims

1. A heat exchange system for a vehicle, comprising: a heat exchange module disposed at the rear portion with respect to the longitudinal direction of the vehicle body, formed of a plurality of plates overlapping one another, each of the plurality of plates having a plurality of through holes in a predetermined interval on a cross section, and including a first heat exchange area and a second heat exchange area, the first heat exchange area including a first coolant flow path, an oil flow path, and a first refrigerant flow path, and the second heat exchange area including a second coolant flow path and a second refrigerant flow path; a radiator mounted at the front with respect to the longitudinal direction of the vehicle body, and performing heat exchange when a first coolant circulating inside the radiator passes through the first coolant flow path; A heating, ventilation and air conditioning (HVAC) module is disposed at the rear of the vehicle based on the longitudinal direction of the vehicle body, and includes an air conditioning housing, an evaporator, an indoor condenser, and an opening and closing door disposed within the housing. The opening and closing door is operated to control the direction of indoor air according to cooling mode and heating mode; an electric compressor that discharges a first refrigerant between the heat exchange module and the HVAC module to the indoor condenser; a rear drive motor disposed at the rear portion with respect to the longitudinal direction of the vehicle body, and exchanging heat with the first coolant when cooling oil circulating inside the rear drive motor passes through the oil flow path; an automatic driving controller disposed at the rear portion of the vehicle body in a longitudinal direction thereof, and exchanging heat with the second refrigerant when the second coolant circulating within the automatic driving controller passes through the second coolant flow path; as well as Switching valve, comprising: a first valve disposed on a first refrigerant pipeline between the indoor condenser and the first heat exchange area; a second valve provided on the second refrigerant line between the first heat exchange area and the second heat exchange area and connected to a branch line branched from the third refrigerant line; and A third valve is provided on a third refrigerant line connected to the electric compressor via the second heat exchange region and the evaporator, and is connected to a fourth refrigerant line branched from the third refrigerant line.

2. The heat exchange system for a vehicle according to claim 1, wherein: The heat exchange module includes the plurality of through holes formed on each of the plurality of plates along a length direction of the vehicle body, and is mounted on an upper surface of the rear drive motor via a mounting bracket.

3. The heat exchange system for a vehicle according to claim 1, wherein: The heat exchange module comprises: a flange formed along an outer edge of each of the plurality of plates; and A diaphragm is formed at a central portion in a length direction of each of the plurality of plates and separates the first heat exchange region from the second heat exchange region.

4. The heat exchange system for a vehicle according to claim 1, wherein: The first heat exchange area is configured as follows: The first coolant circulates through a first coolant line connecting the radiator and the first coolant flow path; The cooling oil circulates through an oil line connecting the rear drive motor and the oil flow path; and The first refrigerant circulates through the first refrigerant line, and heat exchange between the first coolant and the cooling oil is performed through the first refrigerant or the second refrigerant.

5. The heat exchange system for a vehicle according to claim 1, wherein: The second heat exchange area is configured as follows: the second coolant circulates through a second coolant line connecting the autopilot controller and the second coolant flow path; The second refrigerant flows from the second refrigerant line and circulates through the third refrigerant line and the fourth refrigerant line, and heat exchange of the second coolant is performed by the second refrigerant.

6. The heat exchange system for a vehicle according to claim 1, wherein: The first valve is an expansion valve provided on an upper side of the heat exchange module to circulate the first refrigerant discharged from the indoor condenser into the first refrigerant flow path.

7. The heat exchange system for a vehicle according to claim 6, wherein: The second valve is an expansion valve provided adjacent to the first valve to connect the branch line connected to the first side of the third refrigerant line and the second refrigerant line to each other.

8. The heat exchange system for a vehicle according to claim 7, wherein: The third valve is an expansion valve disposed adjacent to the second valve to selectively circulate the first refrigerant or the second refrigerant to the third refrigerant line and the fourth refrigerant line.

9. The heat exchange system for a vehicle according to claim 8, wherein: When cooling the autonomous driving controller in a cooling mode of the vehicle: circulating the first refrigerant from the electric compressor to the indoor condenser; The first valve is opened to circulate the first refrigerant to the first heat exchange area to perform heat exchange with the first coolant; The second valve expands the first refrigerant to form the first refrigerant into a second refrigerant relatively cooler than the first refrigerant, closes the branch line, and opens a passage on the second heat exchange area side to circulate the second refrigerant to the second heat exchange area for heat exchange with the second coolant; and The third valve closes the fourth refrigerant line and opens the third refrigerant line to circulate the second refrigerant to the evaporator.

10. The heat exchange system for a vehicle according to claim 8, wherein: When cooling the autonomous driving controller in a cooling mode off state and a heating mode off state of the vehicle: circulating the first refrigerant from the electric compressor to the indoor condenser; The first valve is opened to circulate the first refrigerant to the first heat exchange area to perform heat exchange with the first coolant; The second valve expands the first refrigerant to form the first refrigerant into a second refrigerant relatively cooler than the first refrigerant, closes the branch line, and opens a passage on the second heat exchange area side to circulate the second refrigerant to the second heat exchange area for heat exchange with the second coolant; and The third valve closes the third refrigerant line and opens the fourth refrigerant line to circulate the second refrigerant to the electric compressor.

11. The heat exchange system for a vehicle according to claim 8, wherein: When cooling the autonomous driving controller in a heating mode of the vehicle: circulating the first refrigerant from the electric compressor to the indoor condenser; The first valve expands the first refrigerant to form the first refrigerant into a second refrigerant that is relatively cooler than the first refrigerant, and circulates the second refrigerant to the first heat exchange region to perform heat exchange with the first coolant; The second valve opens the passage on the second heat exchange area side to circulate the second refrigerant to the second heat exchange area to perform heat exchange with the second coolant; and The third valve closes the third refrigerant line and opens the fourth refrigerant line to circulate the second refrigerant to the electric compressor.

12. The heat exchange system for a vehicle according to claim 8, wherein: When cooling the autonomous driving controller in a heating and dehumidification mode of the vehicle: circulating the first refrigerant from the electric compressor to the indoor condenser; The first valve expands the first refrigerant to form the first refrigerant into a second refrigerant that is relatively cooler than the first refrigerant, and circulates the second refrigerant to the first heat exchange region to perform heat exchange with the first coolant; The second valve opens the passage on the second heat exchange area side to circulate the second refrigerant to the second heat exchange area to perform heat exchange with the second coolant; and The third valve closes the fourth refrigerant line and opens the third refrigerant line to circulate the second refrigerant to the evaporator.

13. The heat exchange system for a vehicle according to claim 8, wherein: When the autonomous driving controller is not cooled in the cooling mode of the vehicle: circulating the first refrigerant from the electric compressor to the indoor condenser; The first valve is opened to circulate the first refrigerant to the first heat exchange area to perform heat exchange with the first coolant; The second valve closes the passage on the second heat exchange area side and opens the branch line to circulate the first refrigerant to the third refrigerant line through the branch line; and The third valve expands the first refrigerant to form the first refrigerant into a second refrigerant that is relatively cooler than the first refrigerant, closes the fourth refrigerant line, and opens the third refrigerant line to circulate the second refrigerant to the evaporator.

14. The heat exchange system for a vehicle according to claim 8, wherein: When the autonomous driving controller is not cooled in a heating mode of the vehicle: circulating the first refrigerant from the electric compressor to the indoor condenser; The first valve expands the first refrigerant to form the first refrigerant into a second refrigerant that is relatively cooler than the first refrigerant, and circulates the second refrigerant to the first heat exchange region to perform heat exchange with the first coolant; The second valve closes the passage on the second heat exchange area side and opens the branch line to circulate the second refrigerant to the third refrigerant line through the branch line; and The third valve closes the third refrigerant line on the evaporator side and opens the fourth refrigerant line to circulate the second refrigerant to the electric compressor.

15. The heat exchange system for a vehicle according to claim 8, wherein When the autonomous driving controller is not cooled in the heating and dehumidification mode of the vehicle: circulating the first refrigerant from the electric compressor to the indoor condenser; The first valve expands the first refrigerant to form the first refrigerant into a second refrigerant that is relatively cooler than the first refrigerant, and circulates the second refrigerant to the first heat exchange region to perform heat exchange with the first coolant; The second valve closes the passage on the second heat exchange area side and opens the branch line to circulate the second refrigerant to the third refrigerant line through the branch line; and The third valve closes the fourth refrigerant line and opens the third refrigerant line to circulate the second refrigerant to the evaporator.

16. The heat exchange system for a vehicle according to claim 1, further comprising a connecting bracket that absorbs vibration of a vehicle body, in, The electric compressor is fastened to the housing of the rear drive motor at at least two points by the connecting bracket.

17. The heat exchange system for a vehicle according to claim 1, wherein: The autopilot controller is fastened to a first side of an upper surface of the rear cross member at at least two points.

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