HEAT PUMP SYSTEM FOR A VEHICLE

Abstract

Heat pump system for a vehicle, comprising: a cooling device (10) comprising a radiator (12), a first water pump (14), a first valve (V1), a second valve (V2), and a reservoir (16), which are connected by means of a coolant line (11) to circulate a coolant in the coolant line (11) to cool at least one electrical component (15) provided in the coolant line (11); a battery cooling device (20) comprising a battery coolant line (21) connected to the coolant line (11) via the first valve (V1), and a second water pump (22) and a battery module (24) connected by means of the battery coolant line (21) to circulate the coolant in the battery module (24); a heating device (40) comprising a heating line (41) connected to the coolant line (11) via the second valve (V2).to heat a vehicle interior using a coolant, and comprising a third water pump (42) and a heater (52a) provided on the heating line (41), a heat exchange device (30) which is provided in the battery coolant line (21) between the first valve (V1) and the battery module (24), connected to a heat exchange device connecting line (31) through the second valve (V2), which is connected to the heat exchange device connecting line (31), and connected by a refrigerant connecting line (61) to a refrigerant line (51) of an air conditioning device (50) in order to adjust a temperature of the coolant by carrying out a heat exchange between the coolant circulating in the battery coolant line (21) and a refrigerant which is optionally supplied by the air conditioning device (50),and wherein the reservoir (16) is provided in the coolant line (11) between the radiator (12) and the first valve (V1) and is connected to the coolant line (11), which connects the first valve (V1) and the first water pump (14), via a supply line (17) which bypasses the first valve (V1).

Description

BACKGROUND OF THE INVENTIONField of the InventionThe present invention relates to a heat pump system for a vehicle. More particularly, the present invention relates to a heat pump system for a vehicle that adjusts a temperature of a battery module using a single heat exchange device that performs heat exchange between a refrigerant and a coolant, and that improves heating efficiency using waste heat generated from an electrical component.Description of the Related ArtGenerally, an air conditioning apparatus for a vehicle includes an air conditioning system for circulating a coolant to heat or cool an interior of the vehicle.Such an air conditioning apparatus maintains a comfortable indoor climate by keeping an indoor temperature of the vehicle at an appropriate level regardless of an outdoor temperature change, so that the indoor space of the vehicle is heated or cooled by heat exchange by a condenser and an evaporator during a process in which a refrigerant discharged by operating a compressor circulates back to the compressor after flowing through a condenser, a receiver-drier, an expansion valve, and an evaporator.That is, the air conditioning system condenses a high-temperature and high-pressure gaseous refrigerant compressed by the compressor in summer in a cooling mode to reduce a temperature and humidity of the interior of the vehicle by evaporation in the evaporator by the receiver-drier and the expansion valve.In recent years, with increasing interest in energy efficiency and environmental pollution, there has been a need to develop eco-friendly vehicles configured to substantially replace internal combustion engine vehicles. The eco-friendly vehicles are usually fuel cell or electric vehicles powered by electricity or a hybrid vehicle powered by an internal combustion engine and a battery.Among the eco-friendly vehicles, the electric vehicle or the hybrid vehicle does not use a separate heater unlike an air-conditioning device of a general vehicle, and the air-conditioning device applied to the eco-friendly vehicle is generally referred to as a heat pump system.Unlike the case of the electric vehicle, the chemical reaction energy of oxygen and hydrogen is converted into electric energy to generate a driving force. In this process, since heat energy is generated by the chemical reaction in the fuel cell, the effective removal of the generated heat is essential for securing the performance of the fuel cell.Moreover, even in the hybrid vehicle, an electric motor is driven using the electricity supplied from the fuel cell or an electric battery together with an engine that operates using ordinary fuel to generate the driving force, and as a result, the performance of the electric motor can be ensured only by effectively dissipating the heat generated from the fuel cell or the battery and the electric motor.As a result, in the hybrid vehicle or the electric vehicle, generally, a battery cooling system needs to be separately formed with a separate sealing circuit together with a radiator and the heat pump system in order to prevent heat generation in the electric motor and in the electric components and the battery including the fuel cell.Accordingly, the size and weight of a cooling module disposed at the front of the vehicle increase, and an arrangement of connection pipes that supply the refrigerant and the coolant to the heat pump system, the radiator, and the battery cooling system in an engine room becomes complicated.Further, the battery cooling system which heats or cools the battery according to a state of the vehicle to make the battery exhibit optimum performance is separately provided, and as a result, a plurality of valves are used for connection to the respective connection pipes, and noise and vibration due to frequent opening and closing operations of the valves are transmitted to the interior of the vehicle, so that ride comfort is impaired.The above information disclosed in this Background section of the present invention is only for enhancement of understanding of the general background of the present invention and should not be taken as an admission or any suggestion that this information belongs to the prior art already known to a person skilled in the art.Further, post-published DE 10 2019 130 748 A1 discloses a heat pump system for a vehicle, comprising: a cooling device including a radiator, a first water pump, a first valve, and a surge tank connected by a coolant line and configured to circulate a coolant in the coolant line to cool at least one electric component provided in the coolant line; a battery cooling device configured to include a battery coolant line connected to the surge tank via a second valve and a second water pump and a battery module connected to the battery coolant line to circulate the coolant in the battery module; and a heating device including a heating line connected to the coolant line via a third valve, to heat a vehicle interior using a coolant and a third water pump provided in the heating line, and a heater. Further heat pump and heat management systems for vehicles are known from post-published DE 10 2020 105 801 A1 and post-published DE 10 2020 119 339 A1.EXPLANATION OF THE INVENTIONIt is an object of the present invention to provide a heat pump system for a vehicle that adjusts a temperature of a battery module using a single heat exchange device that performs heat exchange between a refrigerant and a coolant, and that improves heating efficiency using waste heat generated from an electrical component.To this end, the present invention provides a heat pump system for the vehicle (e.g. for a motor vehicle, in particular for a passenger motor vehicle) according to claim 1, such a heat pump system comprising: a cooling device configured to comprise a radiator, a first water pump, a first valve, a second valve and a reservoir, which are connected by means of a coolant line to circulate a coolant in the coolant line to cool at least one electrical component provided in (e.g. along) the coolant line, a battery cooling device comprising a battery coolant line, which is connected to the coolant line via the first valve, and a second water pump and a battery module, which are connected by means of the battery coolant line to circulate the coolant in the battery module, a heating device, which comprises a heating line, which is connected to the coolant line via the second valve to heat a vehicle interior using a coolant, and includes a third water pump and a heater provided on the heating line, a heat exchange device (e.g., radiator device) provided in the battery coolant line between the first valve and the battery module is connected to a heat exchange device connection line through the second valve connected to the heat exchange device connection line, and is connected to a refrigerant line of an air conditioning device through a refrigerant connection line to adjust a temperature of the coolant by performing heat exchange between the coolant circulating in the battery coolant line and a refrigerant selectively (hereinafter, briefly, selectively) supplied from the air conditioning device, and wherein the reservoir tank may be provided in the coolant line between the radiator and the first valve, and is connected to the coolant line (e.g., a portion of the coolant line) connecting the first valve and the first water pump via a supply line bypassing the first valve.The heater may be provided in a heating, ventilation, and air conditioning (HVAC) module of the air conditioning apparatus.The battery cooling device may include a coolant heater provided in the battery coolant line between the battery module and the heat exchange device.When the battery module is heated, the battery coolant line may not be connected to the coolant line by the operation (e.g., valve operation, valve action, particularly valve position) of the first valve, wherein the coolant may be circulated (herein, briefly: circulated) along the battery coolant line by the operation of the second water pump, and wherein the coolant heater may be operated to heat a coolant supplied to the battery module along the battery coolant line.The air conditioning device may include a heating, ventilation, and air conditioning (HVAC) module configured to include an evaporator connected thereto via the refrigerant line, and a door configured to control an outside air flowing through the evaporator to be introduced into the heater selectively depending on a cooling mode, a heating mode, and a heating and dehumidifying mode of the vehicle, a condenser provided in the heating line between the second valve and the heater to circulate a refrigerant therein to perform heat exchange between the refrigerant and a refrigerant supplied through the refrigerant line connected to the condenser, a compressor connected between the evaporator and the condenser via the refrigerant line, a first expansion valve, which is provided in the refrigerant line between the condenser and the evaporator, and a second expansion valve which is provided in the refrigerant connection line.The air conditioning device may further include: a sub condenser (e.g., sub or sub condenser) provided in the refrigerant line between the condenser and the evaporator; and a header provided in the refrigerant line between the evaporator and the compressor and connected to the refrigerant connection line.A first end portion of the refrigerant connection line may be connected to the refrigerant line between the sub-condenser and the first expansion valve, and a second end portion of the refrigerant connection line may be connected to the accumulator between the evaporator and the compressor.Both the heat exchange device and the condenser may be a water cooled heat exchanger, and the sub-condenser may be an air cooled heat exchanger.The HVAC module may further include an air heater provided between the heater and the evaporator to selectively heat the outside air introduced into the heater.The air heating device may be operated to increase a temperature of the outside air flowing through the heater when the temperature of a coolant supplied to the heater is lower than a target temperature for the indoor heating.When the battery module is cooled using the refrigerant, in the cooling device, the coolant may be circulated in the coolant line by the operation of the first water pump, and the supply line may be opened, the heat exchange device connection line may be closed by the operation of the second valve, the heating device may be deactivated, in the battery cooling device, the coolant may be circulated in the battery coolant line by the operation of the second water pump, the cooling device and the battery cooling device may form independent closed circuits through which respective coolant is separately circulated by the operation of the first valve, in the air conditioning device, the refrigerant line connected to the evaporator may be circulated by the operation (e.g., valve operation, In the second expansion valve, the first expansion valve may be closed and the refrigerant communication line may be opened by the operation of the second expansion valve, and the second expansion valve may expand a refrigerant supplied to the refrigerant communication line and supply the expanded refrigerant to the heat exchange device.When the battery module is cooled in the cooling mode of the vehicle, in the cooling device, the coolant may be circulated in the coolant line by the operation of the first water pump, and the supply line may be opened, the heat exchange device connection line may be closed by the operation of the second valve, in the heating device, the coolant may be circulated in the heating line by the operation of the third water pump in a state in which the coolant line and the heating line are connected by the operation of the second valve, in the battery cooling device, the coolant may be circulated in the battery coolant line by the operation of the second water pump, in the cooling device, the cooling device and the battery cooling device may form independent closed circuits through which respective coolant is separately circulated by the operation of the first valve, in the air conditioning device, the refrigerant line, which is connected to the evaporator, may be opened by the operation of the first expansion valve and the refrigerant connection line may be opened by the operation of the second expansion valve, and wherein the second expansion valve may expand a refrigerant supplied to the refrigerant connection line and supply the expanded refrigerant to the heat exchange device.When the heating and dehumidifying mode of the vehicle is performed, the cooling device and the battery cooling device may be deactivated, the coolant line and the heat exchange device connection line may be closed by operation of the second valve, in the heating device, the coolant may be circulated in the heating line by operation of the third water pump, and in the air conditioning device, the refrigerant connection line may be closed by operation of the second expansion valve, and the refrigerant may be circulated along the refrigerant line by operation of the compressor.In the cooling device, when the waste heat of the electric component and the condenser is recovered in a heating mode of the vehicle, the coolant line connected to the radiator and the coolant line connecting the radiator and the reservoir may be closed, and the supply line may be opened, the battery coolant line may be closed by operation of the first valve except a portion of the battery coolant line connected to the heat exchange device, the heat exchange device connection line may be opened by operation of the second valve, the coolant having a temperature that has risen by the operation of the first water pump when passing through the electric component may be supplied to the heat exchange device along the opened coolant line and the opened heat exchange device connection line without passing through the radiator, wherein the refrigerant can be circulated along the heating line by operation of the third water pump, a part of the refrigerant stored in the reservoir can be circulated along the opened refrigerant line through the opened supply line, the cooling device and the heating device can form independent closed circuits through which each refrigerant is separately circulated by operation of the second valve, in the air conditioning device, the refrigerant line connected to the evaporator can be closed by operation of the first expansion valve, and the refrigerant connection line can be opened by operation of the second expansion valve, the refrigerant can be circulated along the refrigerant line by operation of the compressor, and the second expansion valve can expand a refrigerant supplied to the refrigerant connection line and supply the expanded refrigerant to the heat exchanging device.In cooling the electric component and the battery module using the coolant cooled in the radiator, the heat exchange device connection line may be closed by operation of the second valve, the battery coolant line may be connected to the coolant line by operation of the first valve, the coolant cooled in the radiator and stored in the reservoir may be supplied to the battery module while circulating through the battery coolant line by operation of the first valve and operation of the second water pump, the coolant circulating through the battery cooling device may be supplied to the electric component while circulating through the coolant line by operation of the first water pump, and a part of the coolant stored in the reservoir may be circulated along the coolant line through the opened supply line.In the cooling device, when using the waste heat of the electric component in the heating mode of the vehicle, the coolant line connected to the radiator and the coolant line connecting the radiator and the reservoir may be closed, and the supply line may be opened, the battery coolant line may be closed by operation of the first valve except a portion of the battery coolant line connected to the heat exchange device, the heat exchange device connection line may be opened by operation of the second valve, in the heating device, the heating line may be connected to the coolant line by operation of the second valve, and the coolant having a temperature that has increased by the operation of the first water pump when flowing through the electric component may be introduced into the heating line connected to the opened coolant line without flowing through the radiator, wherein the coolant having flowed into the heating pipe may be supplied to the heater by operation of the third water pump, wherein the coolant having been discharged from the heater may flow through the heat exchanging device along the opened heat exchanging device connection pipe and then may be introduced into the electric component again, and wherein a part of the coolant stored in the reservoir may be circulated along the coolant pipe through the opened supply pipe.The second valve may open the coolant line connected to the radiator to allow a part of the coolant circulating through the heater to flow into the heat exchange device connection line and allow the remaining coolant to flow into the radiator when the electric component is overheated.The first valve may be a four-way valve and the second valve may be a five-way valve configured to distribute a (fluid) flow.The electrical component can have an electrical power control unit (EPCU) or an electric motor or an inverter (e.g. converter, inverter) or an autonomous driving control device or an on-board charging device (also referred to as an on-board charging device or on-board charger for short OBC).The delivery line may be connected to the coolant line when the coolant is circulated toward the coolant line by the operation of the first water pump.As described above, according to the heat pump system for the vehicle according to various exemplary embodiments of the present invention, the temperature of the battery module may be adjusted depending on the mode of the vehicle using a (e.g., a single) heat exchange device for performing heat exchange between the coolant and the refrigerant, and the interior of the vehicle may be heated using the coolant, thereby simplifying the entire system.According to various exemplary embodiments of the present invention, it is also possible to improve heating efficiency by recovering waste heat from the electric component and waste heat from the condenser and using it for indoor heating.Further, according to various exemplary embodiments of the present invention, it is possible to optimize the performance of the battery module by efficiently controlling the temperature of the battery module and increase an overall travel distance (e.g., an electric range) of the vehicle by efficiently managing the battery module.Moreover, according to various exemplary embodiments of the present invention, manufacturing cost can be reduced and weight can be reduced by simplifying an entire system, and space utilization can be improved.The methods and apparatuses of the present invention have other features and advantages which will be apparent from or are set forth in more detail in the accompanying drawings, which are incorporated herein, and the following Detailed Description, which together serve to explain certain principles of the present invention.Brief Description of the DrawingsFIG. 1 illustrates a block diagram of a heat pump system for a vehicle according to various exemplary embodiments of the present invention. FIG. 2 illustrates an operation state diagram for cooling electric components and a battery module using a radiator in the heat pump system for a vehicle according to various exemplary embodiments of the present invention. FIG. 3 illustrates an operation state diagram for cooling a battery module using a refrigerant in the heat pump system for a vehicle according to various exemplary embodiments of the present invention. FIG. 4 illustrates an operation state diagram in a cooling mode of a vehicle in the heat pump system for a vehicle according to various exemplary embodiments of the present invention. FIG. 5 illustrates an operation state diagram for performing the heating mode using waste heat of an electric component in a heat pump system for a vehicle according to various exemplary embodiments of the present invention. FIG. 6 illustrates an operating state diagram for waste heat recovery of an electric component and a condenser depending on a heating mode in a heat pump system for a vehicle according to various exemplary embodiments of the present invention. FIG. 7 illustrates an operation state diagram for a heating and dehumidifying mode in a heat pump system for a vehicle according to various exemplary embodiments of the present invention. FIG. 8 illustrates an operation state diagram for heating a battery module in a heat pump system for a vehicle according to various exemplary embodiments of the present invention.It is to be understood that the appended drawings are not necessarily to scale, presenting a somewhat simplified representation of various features illustrative of the basic principles of the invention. The specific design features of the present invention, including, for example, specific dimensions, orientations, locations, and shapes disclosed herein, will be (at least) partially dictated by the particular intended application and use environment.In the figures, like reference numerals refer to like or equivalent components of the present invention throughout the several figures of the drawings.Detailed DescriptionReference will now be made in detail to various embodiments of the present invention, examples of which are illustrated in the accompanying drawings and described below. Although the invention will be described in connection with the exemplary embodiments, it is understood that the present description is not intended to limit the invention to these exemplary embodiments. On the contrary, the invention is intended to cover not only the exemplary embodiments, but also various alternatives, modifications, modifications, and other embodiments, which may be included within the scope of the invention as defined by the appended claims.Various exemplary embodiments of the present invention will be described below in detail with reference to the accompanying drawings.Exemplary embodiments described in the exemplary embodiments and the structures shown in the drawings have merely illustrated the most preferred exemplary embodiments of the present invention, but do not limit the scope of the present invention.For the purpose of illustrating the present invention, parts that are not related to the description are omitted, and the same elements or equivalents are denoted by the same reference numerals throughout the specification.Further, the size and thickness of each element are shown only arbitrarily in the drawings, but the present invention is not necessarily limited thereto, and the thickness of layers, films, foils, plates, regions, etc. are exaggerated in the drawings for illustration.Throughout the specification and the appended claims, unless explicitly described to the contrary, the word "comprise" and variations thereof, such as "comprises" or "comprising," are to be understood to imply the inclusion of stated elements but not the exclusion of any other element.Further, the terms "..unit", "..mechanism", "..part", "..element", etc. used herein respectively mean a unit of inclusive components that perform at least one function or operation.FIG. 1 illustrates a block diagram of a heat pump system for a vehicle according to various exemplary embodiments of the present invention.The heat pump system for the vehicle according to various exemplary embodiments of the present invention may adjust a temperature of a battery module 24 using a (e.g., a single) heat exchange device 30 in which a refrigerant and a coolant exchange heat, and may recover waste heat generated from an electrical component 15 to use it for interior heating.Such a heat pump system can be applied to electric vehicles.Referring to FIG. 1, the heat pump system may include a cooling device 10, a battery cooling device 20, a heat exchange device (e.g., chiller device) 30, and a heater 40.First, the cooling device 10 includes a radiator 12 connected to a coolant line 11, a first water pump 14, a first valve V 1, a second valve V 2, and a reservoir tank 16.The radiator 12 is installed in the front of the vehicle, and a cooling fan 13 is mounted behind the radiator 12 so that the coolant is cooled by an operation of the cooling fan 13 and a heat exchange with the outside air.In addition, the electrical component 15 can have an electrical power control unit (EPCU) or an electric motor or an inverter (e.g. converter, inverter) or autonomous driving control device or an onboard charging device (also referred to as an onboard charging device or onboard charging device, abbreviated to OBC).The electric component 15 configured as described above may be provided in (e.g., along) the coolant line 11 to be cooled in a water-cooled manner.Accordingly, when the waste heat of the electric component 15 is recovered in the heating mode of the vehicle, the heat generated by the EPCU or the electric motor or the inverter or the autonomous driving controller or the OBC can be recovered.The reservoir 16 is also provided in (e.g., along) the coolant line 11 between the radiator 12 and the first water pump 14. The coolant cooled in the radiator 12 may be stored in the reservoir 16.This cooling device 10 can circulate the coolant in the coolant line 11 by operating the first water pump 14 so as to supply the coolant to the electrical component 15 provided in the coolant line 11.Meanwhile, the reservoir tank 16 may be connected to the coolant line 11 connecting the first valve V 1 and the first water pump 14 via a supply line 17.The supply pipe 17 may be / be connected to the coolant pipe 11 when the coolant is circulated (herein, briefly circulated) to the coolant pipe 11 by the operation of the first water pump 14.That is, when the first water pump 14 is operated, the reservoir 16 may always allow a portion of the stored coolant to flow into the coolant line 11 through the supply line 17 (e.g., even if no flow is possible in the coolant line 11 via the valve V 1).Accordingly, when the first water pump 14 is operated, cavitation can be prevented from occurring in the first water pump 14. Further, damage to the first water pump 14 due to the cavitation can be prevented preventively.In the exemplary embodiment of the present invention, the battery cooling device 20 includes a battery coolant line 21 connected to the coolant line 11 via the first valve V 1, and a second water pump 22 and the battery module 24 connected to the battery coolant line 21.The battery cooling device 20 can selectively circulate the coolant in the battery module 24 by an operation of the second water pump 22 (hereinafter, briefly, optional).Meanwhile, the battery cooling device 20 may further include a coolant heater 26 provided in (e.g., along) the battery coolant line 21 between the battery module 24 and the first valve V 1.When it is necessary to increase the temperature of the battery module 24, the coolant heater 26 is turned on to heat the coolant circulating in the battery coolant line 21, so that the coolant having increased temperature can be supplied to the battery module 24.The coolant heater 26 may be an electric heater that operates in response to the supply of electric power.That is, the coolant heater 26 is operated when the temperature of the coolant supplied to the battery module 24 is lower than the target temperature, so that the coolant circulating in the battery coolant line 21 can be heated.Accordingly, the coolant having a temperature increased when flowing through the coolant heater 26 may be supplied to the battery module 24 to increase the temperature of the battery module 24.That is, the coolant heater 26 may selectively operate as the temperature of the battery module 24 is increased.In the exemplary embodiment of the present invention, the heat exchange device 30 is provided in the battery coolant line 21 between the first valve V 1 and the battery module 24.The heat exchange device 30 may be connected to a heat exchange device connection line 31 selectively connectable to the refrigerant line 11 via the second valve V 2.The heat exchange device 30 is connected to a refrigerant line 51 of an air conditioning device 50 through a refrigerant connection line 61. That is, the heat exchange device 30 may be a water-cooled heat exchanger in which a coolant flows.Accordingly, the heat exchange device 30 can regulate the temperature of the coolant by performing heat exchange between the coolant selectively supplied to the battery coolant line 21 and the heat exchange device connection line 31 and the refrigerant selectively supplied from the air conditioning device 50.Here, a first end portion of the heat exchange device connection pipe 31 is connected to the second valve V 2. A second end portion of the heat exchange device connection pipe 31 may be connected to the heat exchange device 30.The heat exchange device connection line 31 may connect the heat exchange device 30 to the second valve V 2 depending on an operation (e.g., valve operation, valve operation, particularly valve position) of the second valve V 2.The heater 40 may include a heating line 41 selectively connectable to the coolant line 11 through a second valve V 2 to heat a vehicle interior using the coolant, and a third water pump 42 and a heater 52 aprovided on the heating line 41.When an interior of the vehicle is heated, the heater 40 may connect the coolant line 11 connected to the electric component 15 and the heating line 41 by operating the second valve V 2 so that the high-temperature coolant (e.g., high-temperature coolant) that has flowed through the electric component 15 is supplied to the heating line 41.Accordingly, the high temperature coolant can be supplied to the heater 52 aalong the heating line 41.That is, the heater 40 configured as described above supplies the high-temperature coolant introduced from the cooling device 10 to the heating pipe 41 in the heating mode of the vehicle or the coolant whose temperature is increased while circulating through the heating pipe 41 to the heater 52 a, thereby heating the vehicle interior, by operating the third water pump 42.Here, the first, second, and third water pumps 14, 22, and 42 may be an electric water pump, respectively.Meanwhile, the heater 52 amay be provided inside a heating, ventilation, and air conditioning (HVAC) module 52 provided in the air conditioner 50.The HVAC module 52 may further include an air heater 52 cprovided between the heater 52 aand the evaporator 56 to selectively heat the outside air flowing into the heater 52 a.The air heater 52 cmay be operated to increase the temperature of the outside air flowing into the heater 52 awhen the temperature of the coolant supplied to the heater 52 ais lower than a target temperature for the indoor heating.The air heater 52 cmay be mounted at the front of the heater 52 a(e.g., in front of the heater) toward the interior of the vehicle within the HVAC module 52 to selectively heat the outside air flowing into the heater 52 a.In the exemplary embodiment of the present invention, the air conditioning device 50 includes the HVAC module 52, a condenser 53, a sub-condenser 54, a first expansion valve 55, an evaporator 56, a receiver 57, and a compressor 59 which are connected via the refrigerant line 51.First, the HVAC module 52 includes the evaporator 56 connected thereto through the refrigerant line 51, and an opening and closing door 52 bfor controlling the outside air flowing through the evaporator 56, which is to be selectively introduced into the heater 52 ain dependence on the cooling mode, heating mode, and heating and dehumidifying mode of the vehicle.That is, the opening and closing door 52 bis opened to allow the outside air flowing through the evaporator 56 to be introduced into the heater 52 ain the heating mode of the vehicle. On the other hand, in the cooling mode of the vehicle, the opening and closing door 52 bblocks the heater 52 a, so that the outside air cooled when flowing through the evaporator 56 directly flows into the vehicle.Herein, the HVAC module 52 may further include an air heater 52 cprovided between the heater 52 aand the evaporator 56 to selectively heat the outside air flowing into the heater 52 a.The air heater 52 cmay be operated to increase the temperature of the outside air flowing into the heater 52 awhen the temperature of the coolant supplied to the heater 52 ais lower than a target temperature for the indoor heating.In the exemplary embodiment of the present invention, the condenser 53 is connected to the refrigerant line 51 to allow the refrigerant to flow therethrough. The condenser 53 is provided on the heating pipe 41 between the second valve V 2 and the heater 52 aso that the coolant circulating in the heater 40 flows therethrough (the condenser).This condenser 53 can condense the refrigerant by heat exchange with the refrigerant circulating in the heating pipe 41. That is, the condenser 53 may be a water-cooled heat exchanger into which the coolant flows.In the exemplary embodiment of the present invention, the sub-condenser (e.g., sub-condenser or sub-condenser) 54 may be provided in the refrigerant line 51 between the condenser 53 and the evaporator 56.Here, the sub condenser 54 may further condense the refrigerant condensed in the condenser 53 by heat exchange with the outside air. In other words, the sub-condenser 54 is disposed in front of the radiator 12 to perform mutual heat exchange between the refrigerant having flowed therein and that of the outside air.As a result, the sub condenser 54 may be an air-cooled heat exchanger for condensing the refrigerant using outside air.Accordingly, the sub-condenser 54 can further condense the refrigerant condensed in the condenser 53 to increase the supercooling of the refrigerant, thus improving a performance figure (COP) which is a number of cooling performance with respect to the performance required by the compressor.The first expansion valve 55 is provided in the refrigerant line 51 between the sub condenser 54 and the evaporator 56. The first expansion valve 55 receives the refrigerant flowing through the second condenser 54 to expand it.In the exemplary embodiment of the present invention, a first end portion of the refrigerant connection line 61 is connected to the refrigerant line 51 extending between the sub condenser 54 and the first expansion valve 55. A second end portion of the refrigerant connection line 61 may be connected to the accumulator 57 disposed between the evaporator 56 and the compressor 59.Herein, a second expansion valve 63 is provided in (e.g., along) the refrigerant connection line 61. The second expansion valve 63 may expand the refrigerant flowing through the refrigerant connection line 61 to introduce it into the heat exchange device 30 when the battery module 24 is cooled by the coolant that has exchanged heat with the refrigerant.That is, the second expansion valve 63 is operated to expand the refrigerant when the battery module 24 is cooled using the refrigerant that has exchanged heat with the refrigerant.This second expansion valve 63 can introduce the refrigerant discharged from the sub condenser 54 into the heat exchange device 30 in a state in which the temperature of the refrigerant is lowered by expanding the refrigerant, to further reduce the temperature of the refrigerant flowing through the inside of the heat exchange device 30.As a result, the coolant having the temperature lowered when flowing through the heat exchange device 30 is introduced into the battery module 24, and cooling can be performed more efficiently.The compressor 59 is connected to the evaporator 56 and the condenser 53 through the refrigerant line 51 (for example, the compressor 59 is connected to the condenser 53 particularly through the refrigerant line 51 extending between the condenser 57 and the condenser 53). Said compressor 59 can compress the gaseous refrigerant and supply the compressed refrigerant to the condenser 53.The accumulator 57 is provided in (e.g., along) the refrigerant line 51 between the evaporator 56 and the compressor 59.Such a receiver 57 improves the efficiency and durability of the compressor 59 by supplying only the gaseous refrigerant to the compressor 59.Here, the first and second expansion valves 55 and 63 may be electronic expansion valves that selectively expand the refrigerant while controlling a refrigerant flow through the refrigerant line 51 or the refrigerant connection line 61.Further, the first valve V 1 may be a four-way valve and the second valve V 2 may be a five-way valve configured to distribute the flow.Hereinafter, an operation and a function of the heat pump system for the vehicle according to various exemplary embodiments of the present invention configured as described above will be described in detail with reference to FIGS. 2 to 8.First, an operation in a case of cooling the electric component 15 and the battery module 24 using the radiator 12 in the heat pump system for the vehicle according to the exemplary embodiment of the present invention will be described with reference to FIG. 2.FIG. 2 illustrates an operation state diagram for cooling electric components and a battery module using a radiator in the heat pump system for a vehicle according to various exemplary embodiments of the present invention.Referring to FIG. 2, the heat exchange device connection line 31 is closed by operation of the second valve V 2.Further, the battery coolant line 21 is connected to the coolant line 11 by the operation of the first valve V 1.In this state, the first water pump 14 in the cooling device 10 is operated to cool the electric component 15.In the battery cooling device 20, the second water pump 22 is operated to cool the battery module 24.Accordingly, the coolant cooled in the radiator 12 and stored in the reservoir tank 16 is supplied to the battery module 24 while circulating through the battery coolant line 21 by the operation of the first valve V 1 and the operation of the second water pump 22.The coolant circulating through the battery cooling device 20 may be supplied to the electric component 15 while circulating through the coolant line 11 by the operation of the first water pump 14.Here, a part of the coolant which is / is stored in the storage container 16 can be circulated along the coolant line 11 through the opened supply line 17.That is, the coolant cooled in the radiator 12 and stored in the reservoir tank 16 circulates through the coolant line 11 and the battery coolant line 21, respectively, by the operation of the first water pump 14 and the operation of the second water pump 22 to efficiently cool the electrical component 15 and the battery module 24.The air conditioning device 50 is not operated because the cooling mode of the vehicle is not activated.However, although it has been described in the exemplary embodiment of the present invention that both the electrical component 15 and the battery module 24 are cooled, the present invention is not limited thereto, and when a single one of the electrical component 15 and the battery module 24 is separately cooled, the first and second water pumps 14 and 22 may be selectively operated.An operation in the case of cooling the battery module 24 using the refrigerant will be described with reference to FIG. 3.FIG. 3 illustrates an operation state diagram for cooling a battery module using a refrigerant in the heat pump system for a vehicle according to various exemplary embodiments of the present invention.Referring to FIG. 3, the heat exchange device connection line 31 is closed by operation of the second valve V 2.In this state, the first water pump 14 in the cooling device 10 is operated to cool the electric component 15.Accordingly, in the cooling device 10, the coolant is circulated in the coolant line 11 by the operation of the first water pump 14. At the same time, the supply pipe 17 is opened.In the battery cooling device 20, the second water pump 22 is operated to cool the battery module 24.Accordingly, in the battery cooling device 20, the coolant in the battery coolant line 21 can be circulated by the operation of the second water pump 22.Here, the cooling device 10 and the battery cooling device 20 may respectively form an independent closed circuit through which respective coolant is separately circulated by the operation of the first valve V 1.That is, the battery cooling device 20 is not connected to the coolant line 11 by the operation of the first valve V 1. In this state, the battery cooling device 20 may form a closed circuit through which the coolant is independently circulated in the battery coolant line 21 by operating the second water pump 22.Furthermore, the heating device 40 is deactivated.In the air conditioning device 50, each member except the evaporator 56 operates to supply the refrigerant to the heat exchange device 30.That is, in the air conditioning device 50, the refrigerant line 51 connected to the evaporator 56 is closed by the operation (e.g., valve operation, valve operation) of the first expansion valve 55. In this state, the refrigerant communication line 61 is opened by the operation of the second expansion valve 63.Accordingly, the refrigerant that has passed through the sub condenser 54 can be circulated along the refrigerant line 51 and the refrigerant connection line 61.Here, the second expansion valve 63 may expand the refrigerant supplied to the refrigerant connection line 61 and supply the expanded refrigerant to the heat exchange device 30.Accordingly, the coolant flowing through the heat exchange device 30 may circulate in the battery coolant line 21 to cool the battery module 24 by operation of the second water pump 22.The coolant flowing through the heat exchange device 30 is cooled by heat exchange with the expanded refrigerant supplied to the heat exchange device 30. The coolant cooled in the heat exchange device 30 is supplied to the battery module 24. Accordingly, the battery module 24 is cooled by the cooled coolant.That is, the second expansion valve 63 expands the refrigerant flowing through the sub condenser 54 and opens (e.g., releases for a flow of the refrigerant therethrough) the refrigerant connection line 61 so that the expanded refrigerant is supplied to the heat exchange device 30.Accordingly, the refrigerant discharged from the sub-condenser 54 is expanded by the operation (e.g., valve operation, valve operation) of the second expansion valve 63 to enter a low temperature and low pressure state, and flows into the heat exchange device 30 connected to the refrigerant connection line 61.The refrigerant flowing into the heat exchange device 30 then performs heat exchange with the refrigerant, and is then introduced into the compressor 59 after flowing through the accumulator 57 via the refrigerant connection pipe 61.The compressor 59 compresses the refrigerant and supplies it to the condenser 53.The sub condenser 54 may condense the refrigerant introduced from the condenser 53 by heat exchange with the outside air.In other words, the coolant having the temperature increased due to cooling of the battery module 24 is cooled by heat exchange within the heat exchange device 30 with the low-temperature and low-pressure refrigerant (e.g., low-temperature-low-pressure refrigerant). The cooled coolant is supplied to the battery module 24 again via the battery coolant line 21.As a result, the coolant can efficiently cool the battery module 24 while repeating the above procedure.On the other hand, in the state of cooling the battery module 24 using a refrigerant, in the case where cooling of the interior of the vehicle is required, the refrigerant line 51 connecting the sub-condenser 54 and the evaporator 56 can be opened by the operation of the first expansion valve 55.That is, the first expansion valve 55 can selectively open or close the refrigerant line 51 connecting the sub condenser 54 and the evaporator 56 depending on whether or not cooling of the interior of the vehicle is required.In the exemplary embodiment of the present invention, the operation of the cooling mode of the vehicle will be described with reference to FIG. 4.FIG. 4 illustrates an operation state diagram in a cooling mode of a vehicle in the heat pump system for a vehicle according to various exemplary embodiments of the present invention.Referring to FIG. 4, in the cooling device 10, the coolant is circulated in the coolant line 11 by the operation of the first water pump 14. At the same time, the supply line 17 is open.Here, the heat exchange device connection line 31 is closed by operation of the second valve V 2.In the heater 40, the heating pipe 41 and the coolant pipe 11 are connected by operation of the second valve V 2.In the present state, the coolant supplied from the cooling device 10 is circulated in the heating line 41 by the operation of the third water pump 42.Thus, the coolant cooled by the radiator 12 can be supplied to the condenser 53 by the operation of the first and third water pumps 14 and 42 after flowing through the electric component 15.Meanwhile, in the battery cooling device 20, the second water pump 22 is operated to cool the battery module 24.Accordingly, in the battery cooling device 20, the coolant can be circulated in the battery coolant line 21 by the operation of the second water pump 22.Here, the cooling device 10 and the battery cooling device 20 may respectively form an independent closed circuit through which respective coolant is separately circulated by the operation of the first valve V 1.That is, the battery cooling device 20 is not connected to the coolant line 11 by the operation of the first valve V 1.In this state, the battery cooling device 20 may form a closed circuit through which the coolant is independently circulated in the battery coolant line 21 by operating the second water pump 22.That is, the coolant line 11 and the battery coolant line 21 form independent closed circuits by operation of the first valve V 1.Thus, in the battery cooling device 20, the coolant that has passed through the heat exchange device 30 can be supplied to the battery module 24 along the battery coolant line 21 by the operation of the second water pump 22.In the air conditioning device 50, each component operates to cool the interior of the vehicle. Accordingly, the refrigerant is circulated along the refrigerant line 51.Here, the refrigerant line 51 connecting the sub condenser 54 and the evaporator 56 is opened by the operation of the first expansion valve 55. The refrigerant communication line 61 is opened by the operation of the second expansion valve 63.Accordingly, the refrigerant that has passed through the sub-condenser 54 can be circulated along the refrigerant line 51 and the refrigerant connection line 61.Here, the first and second expansion valves 55 and 63 may expand the refrigerant so that the expanded refrigerant is supplied to the evaporator 56 and the heat exchange device 30, respectively.Meanwhile, the heater 40 supplies the coolant supplied from the cooling device 10 to the condenser 53 by the operation of the third water pump 42.The condenser 53 condenses the refrigerant using the coolant flowing along the heating line 41. The sub condenser 54 may further condense the refrigerant introduced from the condenser 53 by heat exchange with the outside air.The coolant flowing through the heat exchange device 30 is circulated in the battery coolant line 21 to cool the battery module 24 by operation of the second water pump 22.The coolant flowing through the heat exchange device 30 is cooled by heat exchange with the expanded refrigerant supplied to the heat exchange device 30. The coolant cooled in the heat exchange device 30 is supplied to the battery module 24. Accordingly, the battery module 24 is cooled by the cooled coolant.That is, the second expansion valve 63 expands a part of the refrigerant that has passed through the sub condenser 54 to supply the expanded refrigerant to the heat exchange device 30 and open the refrigerant connection line 61.Accordingly, the refrigerant discharged from the sub-condenser 54 is expanded by operating the second expansion valve 63 to enter a low temperature and low pressure state, and flows into the heat exchange device 30 connected to the refrigerant connection pipe 61.The refrigerant flowing into the heat exchange device 30 then performs heat exchange with the refrigerant, and is then introduced into the compressor 59 after flowing through the accumulator 57 via the refrigerant connection pipe 61.In other words, the coolant having the temperature increased due to cooling of the battery module 24 is cooled by heat exchange within the heat exchange device 30 with the low-temperature and low-pressure refrigerant (e.g., low-temperature-low-pressure refrigerant). The cooled coolant is supplied to the battery module 24 again via the battery coolant line 21.As a result, the coolant circulated in the battery cooling device 20 can efficiently cool the battery module 24 while repeating the above procedure.On the other hand, the remaining refrigerant discharged from the sub condenser 54 flows through the refrigerant line 51 to cool the interior of the vehicle, and sequentially flows through the first expansion valve 55, the evaporator 56, the compressor 59, and the condenser 53 (the remaining refrigerant).Here, the outside air flowing into the HVAC module 52 is cooled by the low-temperature refrigerant flowing into the evaporator 56 while flowing through the evaporator 56.In this case, a portion of the heater 52 athrough which the cooled outside air may flow is closed by the opening and closing door 52 b, so that the outside air does not flow through the heater 52 a. Accordingly, the cooled outside air directly flows into the interior of the vehicle, thereby cooling the vehicle interior.On the other hand, the refrigerant may be expanded and supplied to the evaporator 56 at a condensation amount increased upon successively flowing through the condenser 53 and the sub-condenser 54, thereby allowing the refrigerant to be evaporated to a lower temperature.As a result, in the exemplary embodiment of the present invention, the condenser 53 condenses the refrigerant, and the sub-condenser 54 further condenses the refrigerant, which is advantageous in forming the supercooling of the refrigerant.Further, since the subcooled refrigerant can be evaporated to a lower temperature in the evaporator 56, the temperature of the outside air flowing through the evaporator 56 can be further lowered, thereby improving cooling performance and efficiency.The refrigerant may cool the interior of the vehicle in the cooling mode of the vehicle while repeating the above-described operations, and may simultaneously cool the coolant through the heat exchange while flowing through the heat exchange device 30.The low-temperature coolant (e.g., low-temperature coolant) cooled in the heat exchange device 30 is introduced into the battery module 24. Accordingly, the battery module 24 can be efficiently cooled by the low-temperature coolant supplied therefrom.In the exemplary embodiment of the present invention, an operation of the case of using the waste heat of the electric component 15 without the operation of the air conditioning device 50 in the heating mode of the vehicle will be described with reference to FIG. 5.FIG. 5 illustrates an operation state diagram for performing the heating mode using waste heat of an electric component in a heat pump system for a vehicle according to various exemplary embodiments of the present invention.Referring to FIG. 5, the heat pump system may perform heating of the interior of the vehicle using waste heat from the electric component 15.First, in the cooling device 10, the first water pump 14 is operated to circulate the coolant. In the present case, the air conditioning device 50 is stopped (e.g., deactivated).Here, a portion of the coolant line 11 connected to the radiator 12 and a portion of the coolant line 11 connecting the radiator 12 and the reservoir tank 16 are closed by the operation of the second valve V 2. The supply line 17 is open.Thus, a part of the coolant stored in the reservoir tank 16 can be circulated along the coolant line 11 through the opened supply line 17.Here, the battery coolant line 21 except for the battery coolant line 21 (e.g., a portion of the battery coolant line 21) connected to the heat exchange device 30 is closed by operation of the first valve V 1.That is, the battery coolant line 21 connecting the second water pump 22 and the battery module 24 is closed and the operation of the battery cooling device 20 is disabled.Further, in the heater 40, the coolant line 11 and the heating line 41 are connected by operation of the second valve V 2.Here, the heat exchange device connection line 31 is opened by operation of the second valve V 2.In the present state, the coolant having a temperature that has risen as it flows through the electrical component 15 is introduced into the heating line 41 that is connected to the opened coolant line 11 by the operation of the first water pump 14 without flowing through the radiator 12.The coolant that has flowed into the heating pipe 41 can be supplied to the heater 52 aby the operation of the third water pump 42.The coolant discharged from the heater 52 ais introduced into the electric component 15 again along the opened coolant line 11 after flowing through the heat exchange device 30 along the opened heat exchange device connection line 31.That is, the coolant that has passed through the electric component 15 continues to circulate along the opened coolant line 11 without passing through the radiator 12, and receives the waste heat from the electric component 15 so that its temperature is increased.The coolant having the elevated temperature is supplied to the heater 52 avia the heating pipe 41 connected to the coolant pipe 11 without passing through the radiator 12.Here, the coolant introduced into the heating pipe 41 flows through the heater 52 aby the operation of the third water pump 42. At this time, the air heater 52 cmay be selectively operated depending on the temperature of the outside air flowing through the heater 52 a.The air heater 52 cmay be operated when the temperature of the outside air flowing through the heater 52 ais lower than a target temperature, thereby heating the outside air flowing into the vehicle interior.That is, the air heater 52 cmay be operated when the temperature of the outside air flowing through the heater 52 ais lower than a target temperature, thereby heating the outside air flowing into the vehicle interior.The air heater 52 cis operated when the temperature of the outside air that has completed heat exchange with the high-temperature coolant during flowing through the heater 52 ais lower than a predetermined temperature or a target heating temperature.As a result, when the air heater 52 cis operated, the outside air can be heated upon flowing through the air heater 52 cto be introduced into the vehicle compartment in a state where the temperature is increased.Meanwhile, the high temperature coolant supplied to the heater 52 aperforms heat exchange with the outside air, and is then introduced, along the heating pipe 41 and the heat exchange device connection pipe 31 connected by the second valve V 2, into the coolant pipe 11 via the heat exchange device 30 and the portion of the battery coolant pipe 21 (e.g., the portion of the battery coolant pipe 21 between the heat exchange device 30 and the second valve V 2) without passing through the radiator 12.Here, the opening and closing door 52 bis opened so that the outside air flowing into the HVAC module 52 flows through the heater 52 a.Accordingly, the outside air introduced from the outside flows in an ambient temperature state in which it is not cooled when passing through the evaporator 56 to which no refrigerant is supplied. The introduced outside air may be placed in a high temperature state as it passes through the heater 52 aand flows into the vehicle, heating the interior of the vehicle.In other words, according to various exemplary embodiments of the present invention, it is possible to recover the waste heat generated in the electric component 15 while repeating the above-described procedure, and use the waste heat for indoor heating, thereby reducing power consumption and improving overall heating efficiency.On the other hand, in a process of heating the interior of the vehicle by recovering the waste heat of the electric component 15 using the coolant, when the electric component 15 is overheated, a portion of the coolant pipe 11 connected to the radiator 12 and a portion of the coolant pipe 11 connecting the radiator 12 and the storage tank 16 are opened by operation of the second valve V 2.Accordingly, the remaining coolant that is not introduced into the heater 52 ais cooled while passing through the radiator 12.The fully cooled coolant can recover waste heat while flowing through the electric component 15, and at the same time, can efficiently cool the electric component 15 together with the coolant flowing through the heat exchange device 30 along the heating pipe 41 and the heat exchange device connection pipe 31.When the electric component 15 is overheated, the second valve V 2 may open the coolant line 11 connected to the radiator 12 to allow a part of the coolant flowing through the electric component 15 to flow into the heating line 41 and allow the remaining coolant to flow into the radiator 12.As a result, a part of the coolant cooled in the radiator 12 can be supplied to the electric component 15, preventing the electric component 15 from being overheated.Therefore, according to various exemplary embodiments of the present invention, it is possible to recover the waste heat generated in the electric component 15 and use the waste heat for indoor heating to reduce power consumption and improve overall heating efficiency.At the same time, according to various exemplary embodiments of the present invention, a part of the coolant may be introduced into the radiator 12 by controlling the operation of the second valve V 2 configured to distribute the flow to be cooled and then supplied to the electric component 15, thereby efficiently cooling the electric component 15 and ensuring the cooling performance for the electric component 15.In the exemplary embodiment of the present invention, an operation of the case of recovering the waste heat of the electric component 15 and the condenser 53 in the heating mode of the vehicle will be described with reference to FIG. 6.FIG. 6 illustrates an operating state diagram for waste heat recovery of an electric component and a condenser depending on a heating mode in a heat pump system for a vehicle according to various exemplary embodiments of the present invention.Referring to FIG. 6, in the cooling device 10, the first water pump 14 is operated to circulate the coolant.Here, a portion of the coolant line 11 connected to the radiator 12 and a portion of the coolant line 11 connecting the radiator 12 and the reservoir tank 16 are closed. The supply line 17 is open.Thus, a part of the coolant stored in the reservoir tank 16 can be circulated along the coolant line 11 through the opened supply line 17.Further, the battery coolant line 21 except for the battery coolant line 21 (e.g., a portion of the battery coolant line 21) connected to the heat exchange device 30 is closed by operation of the first valve V 1.That is, the battery coolant line 21 connecting the second water pump 22 and the battery module 24 is closed and the operation of the battery cooling device 20 is disabled.Meanwhile, the heat exchange device connection line 31 is opened by operation of the second valve V 2.In this state, the coolant having a temperature increased upon flowing through the electric component 15 is introduced into the heat exchange device 30 by the operation of the first water pump 14 along the opened coolant line 11 and the opened heat exchange device connection line 31 without flowing through the radiator 12.That is, the coolant that has passed through the electric component 15 continues to circulate along the opened coolant pipe 11, the heat exchange device connection pipe 31, and the opened portion of the battery coolant pipe 21 without passing through the radiator 12, and receives the waste heat from the electric component 15 such that its temperature rises.The coolant having the elevated temperature is supplied to the heat exchange device 30 along the heat exchange device connection line 31.That is, the coolant that has absorbed the waste heat of the electric component 15 and has been raised in temperature is recovered by raising the temperature of the refrigerant supplied to the heat exchange device 30 when passing through the heat exchange device 30 by the operation of the first water pump 14.In the heater 40, the coolant is circulated along the heating line 41 by the operation of the third water pump 42.As a result, the coolant circulating in the heating pipe 41 can be supplied to the heater 52 aafter being passed through the condenser 53 by the operation of the third water pump 42.That is, the cooling device 10 and the heating device 40 may respectively form an independent closed circuit through which respective coolant is separately circulated by the operation of the second valve V 2.Accordingly, the coolant circulating through the heating pipe 41 may be supplied to the condenser 53 after flowing through the heater 52 aby the operation of the third water pump 42.Meanwhile, in the air conditioner 50, each component except the evaporator 56 operates to supply the refrigerant to the heat exchange device 30.Here, the refrigerant line 51 connected to the evaporator 56 is closed by the operation of the first expansion valve 55. In this state, the refrigerant communication line 61 is opened by the operation of the second expansion valve 63.The refrigerant flowing through the sub-condenser 54 may be circulated along the refrigerant line 51 and the refrigerant connection line 61.Here, the second expansion valve 63 may expand the refrigerant supplied from the refrigerant connection line 61 to supply it to the heat exchange device 30.The coolant that receives the waste heat of the electric component 15 is increased in temperature, and heat is recovered by increasing the temperature of the refrigerant supplied to the heat exchange device 30 while the coolant flows through the heat exchange device 30 by the operation of the first water pump 14.That is, the heat exchange device 30 receives the refrigerant supplied from the sub condenser 54 and expanded by operation of the second expansion valve 63 through the refrigerant connection line 61.Accordingly, the heat exchange device 30 evaporates the supplied refrigerant by heat exchange with the coolant whose temperature has been raised when passing through the electric component 15, thereby recovering the waste heat of the electric component 15.Thereafter, the refrigerant flowing through the heat exchange device 30 is supplied to the accumulator 57 along the refrigerant connection line 61.The refrigerant supplied to the receiver 57 is separated into gas and liquid. Of the refrigerant separated into gas and liquid, the gaseous refrigerant is supplied to the compressor 59.The refrigerant compressed by the compressor 59 having the high pressure and the high temperature flows into the condenser 53.Here, the refrigerant supplied to the condenser 53 may increase the temperature of the coolant by exchanging heat with the coolant circulating through the heating pipe 41. The coolant of elevated temperature is supplied to the heater 52a.That is, the heater 40 supplies the coolant circulating through the heating line 41 to the condenser 53 by the operation of the third water pump 42.Accordingly, the condenser 53 condenses the refrigerant supplied from the compressor 59 using the refrigerant circulating along the heating line 41.At this time, the temperature of the coolant circulating in the heating pipe 41 is raised by heat exchange with the refrigerant as it passes through the condenser 53. The coolant having the elevated temperature may be supplied to the heater 52 aalong the heating line 41.Here, the air heater 52 cmay be selectively operated depending on the temperature of the outside air flowing through the heater 52 a.The air heater 52 cmay be operated when the temperature of the outside air flowing through the heater 52 ais lower than a target temperature, thereby heating the outside air flowing into the vehicle interior.That is, the air heater 52 cmay be operated when the temperature of the outside air flowing through the heater 52 ais lower than a target temperature, thereby heating the outside air flowing into the vehicle interior.The air heater 52 cis operated when the temperature of the outside air that has completed heat exchange with the high-temperature refrigerant upon flowing through the heater 52 ais lower than a predetermined temperature or a target heating temperature.As a result, when the air heater 52 cis operated, the outside air can be heated while flowing through the air heater 52 cto be introduced into the vehicle compartment in a state where its temperature is increased.Here, the opening and closing door 52 bis opened so that the outside air flowing into the HVAC module 52 and flowing through the evaporator 56 flows through the heater 52 a.Accordingly, the outside air introduced from the outside flows in a room temperature state in which it is not cooled when passing through the evaporator 56 to which no refrigerant is supplied. The introduced outside air may be placed in a high temperature state when passing through the heater 52 aand flows into the vehicle, heating the interior of the vehicle.That is, the heat pump system according to the exemplary embodiment of the present invention is used to increase the temperature of the refrigerant using the waste heat of the electric component 15 and the condenser 53, thereby reducing the power consumption of the compressor 59 and improving the cooling efficiency.In the exemplary embodiment of the present invention, the operation of the heating and dehumidifying mode of the vehicle will be described with reference to FIG. 7.FIG. 7 illustrates an operation state diagram for a heating and dehumidifying mode in a heat pump system for a vehicle according to various exemplary embodiments of the present invention.Referring to FIG. 7, the cooling device 10 and the battery cooling device 20 are deactivated.Here, the coolant line 11 and the heat exchange device connection line 31 are closed by operation of the second valve V 2.In the heater 40, the coolant is circulated along the heating line 41 by the operation of the third water pump 42.The coolant circulating through the heating line 41 may be supplied to the heater 52 aafter being passed through the condenser 53 by the operation of the third water pump 42.Accordingly, the condenser 53 condenses the refrigerant supplied from the compressor 59 using the refrigerant circulating along the heating line 41.At this time, the temperature of the coolant circulating in the heating pipe 41 is raised by heat exchange with the refrigerant as it passes through the condenser 53. The coolant having the elevated temperature may be supplied to the heater 52 aalong the heating line 41.Here, the air heater 52 cmay be selectively operated depending on the temperature of the outside air flowing through the heater 52 a.The air heater 52 cmay be operated when the temperature of the outside air flowing through the heater 52 ais lower than a target temperature, thereby heating the outside air flowing into the vehicle interior.That is, the air heater 52 cmay be operated when the temperature of the outside air flowing through the heater 52 ais lower than a target temperature, thereby heating the outside air flowing into the vehicle interior.The air heater 52 cis operated when the temperature of the outside air that has completed heat exchange with the high-temperature refrigerant upon flowing through the heater 52 ais lower than a predetermined temperature or a target heating temperature.As a result, when the air heater 52 cis operated, the outside air can be heated while flowing through the air heater 52 cto be introduced into the vehicle compartment in a state where its temperature is increased.Meanwhile, in the air conditioning device 50, each of the vehicle interior dehumidifying members operates. Accordingly, the refrigerant is circulated along the refrigerant line 51 by the operation of the compressor 59.Here, the refrigerant line 51 connecting the sub condenser 54 and the evaporator 56 is opened by the operation of the first expansion valve 55. The refrigerant communication line 61 is closed by the operation of the second expansion valve 63.Here, the refrigerant supplied to the condenser 53 may increase the temperature of the coolant by heat exchange with the coolant circulating through the heating pipe 41. The coolant of elevated temperature is supplied to the heater 52a.On the other hand, the refrigerant expanded by the operation of the first expansion valve 55, which is supplied to the evaporator 56, is supplied to the compressor 59 along the refrigerant line 51 via the accumulator 57 after heat exchange with the outside air flowing through the evaporator 56.That is, the refrigerant flowing through the evaporator 56 may flow through the accumulator 57 and be supplied to the compressor 59 that is flown through.The refrigerant compressed by the compressor 59 having the high pressure and the high temperature flows into the condenser 53.Here, the opening and closing door 52 bis opened so that the outside air flowing into the HVAC module 52 and flowing through the evaporator 56 flows through the heater 52 a.That is, the outside air flowing into the HVAC module 52 is dehumidified from the low temperature state by the refrigerant flowing into the evaporator 56 when passing through the evaporator 56. Next, when flowing through the heater 52 aand flowing into the vehicle interior, the outside air is placed in a high temperature state, heating and dehumidifying the interior of the vehicle.That is, the heat pump system according to the exemplary embodiment of the present invention selectively receives the external heat depending on the interior temperature of the vehicle together with the waste heat generated from the condenser 53 in the heating and dehumidifying mode of the vehicle by using them to increase the temperature of the refrigerant, thereby reducing the power consumption of the compressor 59 and improving the heating efficiency.An operation of the case of heating the battery module 24 will be described with reference to FIG. 8.FIG. 8 illustrates an operation state diagram for heating a battery module in a heat pump system for a vehicle according to various exemplary embodiments of the present invention.Referring to FIG. 8, the cooling device 10, the heating device 40, and the air conditioning device 50 are deactivated.Here, the battery coolant line 21 is not connected to the coolant line 11 by the operation of the first valve V 1.That is, in the battery cooling device 20, the battery coolant line 21 connecting the second water pump 22, the battery module 24, and the coolant heater 26 is opened.In this state, the coolant is circulated along the battery coolant line 21 by the operation of the second water pump 22.Here, the coolant heater 26 is operated to heat the coolant supplied to the battery module 24 along the open battery coolant line 21.Accordingly, the temperature of the coolant circulating in the battery coolant line 21 is increased as it flows through the coolant heater 26. Accordingly, the coolant having a temperature increased when flowing through the coolant heater 26 may be supplied to the battery module 24 to increase the temperature of the battery module 24.As a result, according to various exemplary embodiments of the present invention, it is possible to quickly increase the temperature of the battery module 24 while repeating the above-described procedure, thereby efficiently managing the temperature of the battery module 24.Thus, when the heat pump system for the vehicle according to various exemplary embodiments of the present invention is applied as described above, the temperature of the battery module 24 may be adjusted depending on the mode of the vehicle using a (e.g., a single) heat exchange device 30 for performing heat exchange between the coolant and the refrigerant, and the interior of the vehicle may be heated using the coolant, thereby simplifying the entire system.According to various exemplary embodiments of the present invention, it is also possible to improve heating efficiency by recovering waste heat from the electric component 15 and using it for indoor heating.Further, according to various exemplary embodiments of the present invention, it is possible to optimize the performance of the battery module 24 by efficiently controlling the temperature of the battery module 24 and increase an overall travel distance (e.g., an electric range) of the vehicle by efficiently managing the battery module 24.Moreover, the entire system can be simplified to reduce manufacturing cost and weight and improve space utilization.In various exemplary embodiments of the present invention, a controller is connected to at least one of the elements of the heat pump system to control the operation thereof.Further, the term "controller", "controller" or "controller" refers to a hardware device having a memory and a processor configured to execute one or more steps interpreted as an algorithm structure. The memory stores algorithm steps and the processor executes the algorithm steps to perform one or more processes of a method according to various exemplary embodiments of the present invention. The controller according to exemplary embodiments of the present invention may be implemented by a nonvolatile memory configured to store algorithms for controlling the operation of various components of a vehicle or data via software commands for executing the algorithms, and a processor configured to execute an operation described above using the data stored in the memory. The memory and the processor may be individual chips. Alternatively, the memory and the processor may be integrated into a single chip. The processor may be implemented as one or more processors.The controller may be at least one microprocessor that operates from a predetermined program that may include a series of instructions for carrying out the method included in the aforementioned various exemplary embodiments of the present invention.The invention described above may also be implemented as computer readable codes in a computer readable recording medium. The computer readable recording medium is any data storage device capable of storing data which can be subsequently read out by a computer system. Examples of the computer readable recording medium include a hard disk drive (HDD), a solid state drive (SSD), a silicon drive (SDD), a read only memory (ROM), a random access memory (RAM), a CD-ROMs, magnetic tapes, floppy disks, optical data storage devices, etc., and implementations as carrier waves (e.g., transmission over the Internet).In various exemplary embodiments of the present invention, each operation described above may be performed by one controller, and the controller may be configured by a plurality of controllers or a single integrated controller.For convenience in explanation and accurate definition in the appended claims, the terms "upper,...", "lower,...", "inner,...", "äußer...""upper," "lower," "upward," "downward," "front,...", "rear," "front," "rear," "inward / inward," "outward / outward," "inside," "outside," "inside," "outside," "forward / forward," and "rearward / rearward" are used to describe features of the exemplary embodiments with reference to the positions thereof as shown in the drawings. It is further understood that the term "connect" or its variations refer to both a direct and an indirect connection.The foregoing descriptions of certain exemplary embodiments of the present invention have been presented for purposes of illustration and description. They are not intended to be exhaustive or to limit the invention to the precise forms disclosed, and obviously many changes and modifications are possible in light of the above teachings. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and their practical applicability, to thereby enable others skilled in the art to make and utilize various exemplary embodiments of the present invention, as well as various alternatives and modifications thereof. It is intended that the scope of the invention be defined by the appended claims.

Claims

A heat pump system for a vehicle, the heat pump system comprising: a cooling device (10) including a radiator (12), a first water pump (14), a first valve (V1), a second valve (V2), and a reservoir (16) connected by a coolant line (11) to circulate a coolant in the coolant line (11) to cool at least one electrical component (15) provided in the coolant line (11); a battery cooling device (20) including a battery coolant line (21) connected to the coolant line (11) by the first valve (V1), and a second water pump (22) and a battery module (24) connected by the battery coolant line (21) to circulate the coolant in the battery module (24); a heater (40) including a heating line (41), which is connected to the coolant pipe (11) via the second valve (V 2) to heat a vehicle interior using coolant, and includes a third water pump (42) and a heater (52a) provided on the heating pipe (41), a heat exchange device (30) provided in the battery coolant pipe (21) between the first valve (V 1) and the battery module (24), connected to a heat exchange device connection pipe (31) through the second valve (V 2) connected to the heat exchange device connection pipe (31), and connected through a refrigerant connection pipe (61) to a refrigerant pipe (51) of an air conditioning device (50) to adjust a temperature of the coolant by performing heat exchange between the coolant circulating in the battery coolant pipe (21) and a refrigerant, which is selectively supplied from the air conditioning apparatus (50), and wherein the reservoir tank (16) is provided in the coolant line (11) between the radiator (12) and the first valve (V1) and is connected to the coolant line (11) connecting the first valve (V1) and the first water pump (14) via a supply line (17) bypassing the first valve (V1).The heat pump system according to claim 1, wherein the heater (52a) is provided inside a heating, ventilation, and air conditioning (HVAC) module (52) of the air conditioning device (50).The heat pump system according to claim 1 or 2, wherein the battery cooling device (20) further comprises a coolant heater (26) provided in the battery coolant line (21) between the battery module (24) and the heat exchange device (30).The heat pump system according to claim 3, wherein when the battery module (24) is heated, the battery coolant line (21) is not connected to the coolant line (11) by the operation of the first valve (V1), a coolant is circulated along the battery coolant line (21) by the operation of the second water pump (22), and the coolant heater (26) is operated to heat a coolant supplied to the battery module (24) along the battery coolant line (21).The heat pump system according to any one of claims 1 to 4, wherein the air conditioning device (50) includes: an / the HVAC module (52) including an evaporator (56) connected thereto via the refrigerant line (51), and a flap (52b) configured to control an outside air flowing through the evaporator (56) to be selectively introduced into the heater (52a) depending on a cooling mode, a heating mode, and a heating and dehumidifying mode of the vehicle; a condenser (53) provided in the heating line (41) between the second valve (V2) and the heater (52a) to circulate a refrigerant therein to perform heat exchange between the refrigerant and a refrigerant supplied through the refrigerant line (51) connected to the condenser (53), a compressor (59) connected between the evaporator (56) and the condenser (53) by the refrigerant line (51), a first expansion valve (55) provided in the refrigerant line (51) between the condenser (53) and the evaporator (56), and a second expansion valve (63) provided in the refrigerant connection line (61).The heat pump system according to claim 5, wherein the air conditioning device (50) further comprises: a sub-condenser (54) provided in the refrigerant line (51) between the condenser (53) and the evaporator (56); and a header (57) provided in the refrigerant line (51) between the evaporator (56) and the compressor (59) and connected to the refrigerant connection line (61).The heat pump system according to claim 6, wherein a first end portion of the refrigerant connection line (61) is connected to the refrigerant line (51) between the sub-condenser (54) and the first expansion valve (55), and a second end portion of the refrigerant connection line (61) is connected to the accumulator (57) between the evaporator (56) and the compressor (59).The heat pump system according to claim 6 or 7, wherein each of the heat exchange device (30) and the condenser (53) is a water-cooled heat exchanger, and the sub-condenser (54) is an air-cooled heat exchanger.The heat pump system according to any one of claims 5 to 7, wherein the HVAC module (52) further comprises an air heater (52c) mounted between the heater (52a) and the evaporator (56) for selectively heating the outside air flowing through the heater (52a).The heat pump system according to claim 9, wherein the air heater (52c) is operated to increase a temperature of the outside air flowing through the heater (52a) when the temperature of a coolant supplied to the heater (52a) is lower than a target temperature for the indoor heating.The heat pump system according to any one of claims 5 to 10, wherein when the battery module (24) is cooled using the refrigerant, in the cooling device (10), the coolant is circulated in the coolant line (11) by the operation of the first water pump (14), and the supply line (17) is opened, the heat exchange device connection line (31) is closed by the operation of the second valve (V2), the heater (40) is deactivated, in the battery cooling device (20), the coolant is circulated in the battery coolant line (21) by the operation of the second water pump (22), the cooling device (10) and the battery cooling device (20) form independent closed circuits through which respective coolant is separately circulated by the operation of the first valve (V1), in the air conditioning device (50), the refrigerant line (51) connected to the evaporator (56), by the operation of the first expansion valve (55), and the refrigerant connection line (61) is opened by the operation of the second expansion valve (63), and the second expansion valve (63) expands a refrigerant supplied to the refrigerant connection line (61) and supplies the expanded refrigerant to the heat exchange device (30).The heat pump system according to any one of claims 5 to 11, wherein when the battery module (24) is cooled in the cooling mode of the vehicle, in the cooling device (10), the coolant is circulated in the coolant line (11) by the operation of the first water pump (14), and the supply line (17) is opened, the heat exchange device connection line (31) is closed by the operation of the second valve (V2), in the heating device (40), the coolant is circulated in the heating line (41) by the operation of the third water pump (42) in a state in which the coolant line (11) and the heating line (41) are connected by the operation of the second valve (V2), in the battery cooling device (20), the coolant is circulated in the battery coolant line (21) by the operation of the second water pump (22), the cooling device (10) and the battery cooling device (20) form independent closed circuits through which respective refrigerant is separately circulated by the operation of the first valve (V 1), in the air conditioning device (50), the refrigerant line (51) connected to the evaporator (56) is opened by the operation of the first expansion valve (55) and the refrigerant connection line (61) is opened by the operation of the second expansion valve (63), and the second expansion valve (63) expands a refrigerant supplied to the refrigerant connection line (61) and supplies the expanded refrigerant to the heat exchange device (30).The heat pump system according to any one of claims 5 to 12, wherein when the heating and dehumidifying mode of the vehicle is performed, the cooling device (10) and the battery cooling device (20) are deactivated, the coolant line (11) and the heat exchange device connection line (31) are closed by operation of the second valve (V2), in the heating device (40), the coolant is circulated in the heating line (41) by operation of the third water pump (42), and in the air conditioning device (50), the refrigerant connection line (61) is closed by operation of the second expansion valve (63), and the refrigerant is circulated along the refrigerant line (51) by operation of the compressor (59).The heat pump system according to any one of claims 5 to 13, wherein when the waste heat of the at least one electric component (15) and the condenser (53) is recovered in a heating mode of the vehicle, in the cooling device (10), the coolant line (11) connected to the radiator (12) and the coolant line (11) connecting the radiator (12) and the reservoir tank (16) are closed, and the supply line (17) is opened, the battery coolant line (21) except a portion of the battery coolant line (21) connected to the heat exchange device (30) is closed by operation of the first valve (V1), the heat exchange device connection line (31) is opened by operation of the second valve (V2), the coolant having a temperature that has increased by passing through the electric component (15) by operation of the first water pump (14), along the opened coolant line (11) and the opened heat exchange device connection line (31), the coolant is supplied to the heat exchange device (30) without flowing through the radiator (12), the coolant is circulated along the heating line (41) by operation of the third water pump (42), a part of the coolant stored in the reservoir tank (16) circulates along the opened coolant line (11) through the opened supply line (17), the cooling device (10) and the heating device (40) form independent closed circuits through which coolant are separately circulated by operation of the second valve (V2), respectively, in the air conditioning device (50), the refrigerant line (51) connected to the evaporator (56) is closed by operation of the first expansion valve (55), and the refrigerant connection line (61) is opened by operation of the second expansion valve (63), circulating the refrigerant along the refrigerant line (51) by the operation of the compressor (59), and the second expansion valve (63) expands a refrigerant supplied to the refrigerant connection line (61) and supplies the expanded refrigerant to the heat exchange device (30).The heat pump system according to any one of claims 1 to 14, wherein, in cooling the electric component (15) and the battery module (24) using the coolant cooled in the radiator (12), the heat exchange device connection line (31) is closed by operation of the second valve (V2), the battery coolant line (21) is connected to the coolant line (11) by operation of the first valve (V1), the coolant cooled in the radiator (12) and stored in the storage tank (16) is supplied to the battery module (24) while circulating through the battery coolant line (21) by operation of the first valve (V1) and operation of the second water pump (22), the coolant circulating through the battery cooling device (20) is supplied to the at least one electric component (15) while circulating through the coolant line (11) by operation of the first water pump (14), and a portion of the coolant stored in the storage container (16) is circulated along the coolant line (11) through the opened feed line (17).The heat pump system according to any one of claims 1 to 15, wherein, when using the waste heat of the at least one electric component (15) in the heating mode of the vehicle, in the cooling device (10), the coolant line (11) connected to the radiator (12) and the coolant line (11) connecting the radiator (12) and the reservoir tank (16) are closed, and the supply line (17) is opened, the battery coolant line (21) except a portion of the battery coolant line (21) connected to the heat exchange device (30) is closed by operation of the first valve (V1), the heat exchange device connection line (31) is opened by operation of the second valve (V2), in the heating device (40), the heating line (41) is connected to the coolant line (11) by operation of the second valve (V2), the coolant having a temperature, which has risen by the operation of the first water pump (14) when passing through the at least one electric component (15), is introduced into the heating pipe (41) connected to the opened coolant pipe (11) without passing through the radiator (12), the coolant introduced into the heating pipe (41) is supplied to the heater (52a) by the operation of the third water pump (42), the coolant discharged from the heater (52a) flows along the opened heat exchange device connecting pipe (31) through the heat exchange device (30) and is then introduced again into the electric component (15), and a part of the coolant stored in the reservoir tank (16) is circulated along the coolant pipe (11) through the opened supply pipe (17).The heat pump system according to claim 16, wherein the second valve (V2) opens the coolant line (11) connected to the radiator (12) to allow a part of the coolant flowing through the at least one electric component (15) to flow into the heating line (41) and allow a remaining coolant to flow into the radiator (12) when the at least one electric component (15) is overheated.The heat pump system according to any one of claims 1 to 17, wherein the first valve (V1) is a four-way valve, and the second valve (V2) is a five-way valve configured to distribute a flow.The heat pump system according to any one of claims 1 to 18, wherein the at least one electrical component (15) comprises an electric motor or an electric power control unit (EPCU), or an inverter or an autonomous driving control device or an onboard charging device (OBC).The heat pump system according to any one of claims 1 to 19, wherein the supply pipe (17) is connected to the coolant pipe (11) when the coolant is circulated toward the coolant pipe (11) by the operation of the first water pump (14).

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