Vehicle thermal management system

Abstract

Disclosed is a vehicle thermal management system capable of reducing power consumption of an electric compressor, capable of simplifying a circuit, and capable of reducing weight and cost by reducing the number of heat exchangers and refrigerant valves. The vehicle thermal management system is provided with: a heating heat exchanger that exchanges heat with air in an air conditioning case to heat the air; a cooling heat exchanger that exchanges heat with the air in the air conditioning case to cool the air; a refrigerant circuit that circulates a compressor, a condenser, an expansion valve, and a cooler; a first cooling water circuit that passes through the heating heat exchanger and exchanges heat with the condenser of the refrigerant circuit; a second cooling water circuit that passes through the cooling heat exchanger and exchanges heat with the cooler of the refrigerant circuit; a radiator that exchanges heat between cooling water and outdoor air; a third cooling water circuit that passes through the radiator and exchanges heat with a battery of the vehicle; and a mixing tank configured to mix the cooling water of the first cooling water circuit, the second cooling water circuit, and the third cooling water circuit.

Description

TECHNICAL FIELD

[0001] The present application relates to a vehicle thermal management system, and more particularly, to a vehicle thermal management system provided in an electric vehicle or the like to perform air conditioning in a vehicle cabin and to integrate thermal management of a battery and electronic components. BACKGROUND

[0002] Generally, a vehicle air conditioning device is configured to include a cooling system for cooling the interior of a vehicle and a heating system for heating the interior of the vehicle. The cooling system is configured to cool the interior of the vehicle by heat exchange between refrigerant flowing in an evaporator and air passing through the evaporator. Meanwhile, the heating system is configured to heat the interior of the vehicle by heat exchange between cooling water flowing in a heater core and air passing through the heater core.

[0003] Recently, in the case of a vehicle using a battery such as an electric vehicle, a vehicle heat pump system is used which cools electronic components waste heat and a battery together using a cooler which heat-exchanges cooling water and refrigerant. In summary, when the heat pump is operated, the performance of the heat pump is improved by recovering air heat sources of an outdoor unit, electronic component waste heat, and battery waste heat through a water-refrigerant heat exchanger (cooler).

[0004] The existing thermal management system of an electric vehicle is a direct heating type heat pump system which directly uses the heat of refrigerant for heating. Therefore, there is a disadvantage that the configuration of the system for realizing cooling and heating is complicated, and there is a disadvantage that the weight and cost increase as the number of components increases, and the refrigerant filling amount (use amount) increases. Also, the existing thermal management system of an electric vehicle, as a system requiring components to be dispersedly arranged to enable driving, cannot realize the modularization of components, thereby reducing the vehicle assembly. SUMMARY

[0005] TECHNICAL PROBLEM

[0006] To solve the existing technical problems as described above, the present application provides a vehicle thermal management system capable of reducing the power consumption of an electric compressor, simplifying the circuit, and reducing the weight and cost by reducing the number of heat exchangers and refrigerant valves.

[0007] Also, the present application provides a vehicle thermal management system capable of realizing various air conditioning modes, improving the heating performance of a heat pump, and performing indoor heating only by electronic component and battery waste heat, and also capable of warming up a battery by a heat pump.

[0008] TECHNICAL SOLUTION

[0009] The vehicle thermal management system according to the present application includes: a heating heat exchanger that exchanges heat with air in an air conditioning case to heat the air; a cooling heat exchanger that exchanges heat with the air in the air conditioning case to cool the air; a refrigerant circuit that circulates a compressor, a condenser, an expansion valve, and a cooler; a first cooling water circuit that passes through the heating heat exchanger and exchanges heat with the condenser of the refrigerant circuit; a second cooling water circuit that passes through the cooling heat exchanger and exchanges heat with the cooler of the refrigerant circuit; a radiator that exchanges heat between cooling water and outdoor air; a third cooling water circuit that passes through the radiator and exchanges heat with a battery of a vehicle; and a mixing tank configured to mix the cooling water of the first cooling water circuit, the second cooling water circuit, and the third cooling water circuit.

[0010] The mixing tank is implemented as a single one, and a cooling water storage function and a valve function are integrated.

[0011] The mixing tank mixes the cooling water according to a mode in a case where a battery-side cooling water temperature and a cooler-side cooling water temperature are different.

[0012] The first cooling water circuit passes through an electronic component of the vehicle.

[0013] The vehicle thermal management system further includes a first valve provided between the radiator, the electronic component, the mixing tank, and the cooler to selectively flow the cooling water passing through the radiator to the electronic component or the cooler or to selectively flow the cooling water passing through the mixing tank to the cooler or the electronic component.

[0014] The vehicle thermal management system further includes a second valve provided between the electronic component, the condenser, the heating heat exchanger, and the radiator to selectively flow the cooling water passing through the electronic component to the condenser or the mixing tank or to selectively flow the cooling water passing through the heating heat exchanger to the radiator or the condenser.

[0015] The vehicle thermal management system further includes a third valve provided between the second valve, the radiator, the cooler, and the cooling heat exchanger to selectively flow the cooling water passing through the second valve to the radiator or the cooling heat exchanger or to selectively flow the cooling water passing through the cooler to the cooling heat exchanger or the radiator.

[0016] The vehicle thermal management system further includes a fourth valve provided between the mixing tank, the second valve, the third valve, and the battery to selectively flow the cooling water passing through the battery to the third valve or the mixing tank or to selectively flow the cooling water passing through the second valve to the mixing tank or the battery.

[0017] The vehicle thermal management system further includes a fifth valve provided between the battery, the first valve, the electronic component, and the mixing tank to selectively flow the cooling water passing through the first valve to the battery, or to selectively flow the cooling water passing through the mixing tank to the battery or the electronic component, or to flow the cooling water passing through the battery to the electronic component.

[0018] The mixing tank is connected to the cooling heat exchanger, the first valve, the fourth valve, and the fifth valve, respectively, and is provided with a rotary door inside to divide or connect the flow path inside the mixing tank as the door rotates, thereby performing a cooling water mixing function and a flow path switching function.

[0019] According to the rotation of the door, the cooling heat exchanger is connected to the first valve, or the fourth valve is connected to the fifth valve, or the first valve is connected to the fourth valve, or the cooling heat exchanger is connected to the fifth valve, or the cooling heat exchanger, the first valve, the fourth valve, and the fifth valve are all connected.

[0020] In the indoor cooling mode, the first valve connects the radiator to the electronic component and connects the mixing tank to the cooler, the second valve connects the electronic component to the condenser and connects the heating heat exchanger to the radiator, the third valve connects the heating heat exchanger to the radiator and connects the cooler to the cooling heat exchanger, the mixing tank connects the cooling heat exchanger to the first valve, the fourth valve makes the cooling water passing through the battery flow to the radiator through the third valve, and the fifth valve makes the cooling water passing through the radiator flow to the battery, thereby cooling the battery by external air.

[0021] In the indoor cooling mode, the first valve connects the radiator to the electronic component and connects the mixing tank to the cooler, the second valve connects the electronic component to the condenser and connects the heating heat exchanger to the radiator, the third valve connects the heating heat exchanger to the radiator and connects the cooler to the cooling heat exchanger, the mixing tank connects the first valve to the fourth valve while connecting the cooling heat exchanger to the fifth valve, and the fourth valve makes the cooling water passing through the battery flow to the mixing tank, and the fifth valve makes the cooling water passing through the mixing tank flow to the battery, thereby cooling the battery by the cooler.

[0022] The mixing tank connects the first valve to the fourth valve while connecting the cooling heat exchanger to the fifth valve, and the cooling water in the connection area of the first valve and the fourth valve and the connection area of the cooling heat exchanger and the fifth valve is mixed, thereby cooling the battery with mixed cooling water.

[0023] In the indoor heating mode, the first valve connects the radiator to the electronic component and connects the mixing tank to the cooler, the second valve connects the electronic component to the mixing tank and connects the heating heat exchanger to the condenser, the third valve connects the cooler to the radiator and connects the electronic component to the cooling heat exchanger, the mixing tank connects the first valve to the fourth valve, and the fourth valve makes the cooling water passing through the electronic component flow to the mixing tank through the second valve, thereby absorbing heat through the outside air and the electronic component.

[0024] In the indoor heating mode, the first valve connects the radiator to the electronic component and connects the mixing tank to the cooler, the second valve connects the electronic component to the mixing tank and connects the heating heat exchanger to the condenser, the third valve connects the cooler to the radiator and connects the electronic component to the cooling heat exchanger, the mixing tank connects the first valve to the fourth valve, and the fourth valve makes the cooling water passing through the electronic component flow to the mixing tank through the second valve, thereby absorbing heat through the outside air and the electronic component.

[0025] Technical effects

[0026] The vehicle thermal management system according to the present application can achieve cooling, heating, and dehumidification of the vehicle cabin, cooling and heat absorption of the electronic component, and cooling and heating of the battery. Furthermore, the system is configured as an active separate cooling system according to the heat generation amount of the battery, thereby reducing the power consumption of the electric compressor.

[0027] Meanwhile, due to the configuration of the mixing tank, exhaust according to contraction / expansion according to the change in the cooling water temperature can be achieved in a specific operation mode. Furthermore, the configuration of the refrigerant line can be simplified through the cooling water line, and the number of heat exchangers and refrigerant valves can be reduced to ensure price competitiveness.

[0028] In addition, when the heat pump heating operation is performed, heat absorption of the outside air is performed using the water-cooled evaporator, and waste heat absorption of the electronic component and the battery is performed using the cooler, thereby improving the heat pump heating performance. Furthermore, indoor heating can be achieved only through the waste heat of the electronic component and the battery, and the heating of the battery can be achieved through the heat pump. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a configuration diagram of a vehicle thermal management system according to an embodiment of the present application.

[0030] Figure 2 is a diagram illustrating a mixing tank according to an embodiment of the present application.

[0031] Figure 3 is a diagram illustrating a first valve to a fifth valve according to an embodiment of the present application.

[0032] Figure 4 FIG. 1 is a diagram showing a first operation mode of a vehicle thermal management system according to an embodiment of the present application.

[0033] Figure 5 FIG. 2 is a diagram showing a second operation mode of a vehicle thermal management system according to an embodiment of the present application.

[0034] Figure 6 FIG. 3 is a diagram showing a third operation mode of a vehicle thermal management system according to an embodiment of the present application.

[0035] Figure 7 FIG. 4 is a diagram showing a fourth operation mode of a vehicle thermal management system according to an embodiment of the present application.

[0036] Figure 8 FIG. 5 is a diagram showing a fifth operation mode of a vehicle thermal management system according to an embodiment of the present application.

[0037] Figure 9 FIG. 6 is a diagram showing a sixth operation mode of a vehicle thermal management system according to an embodiment of the present application.

[0038] Figure 10 FIG. 7 is a diagram showing a seventh operation mode of a vehicle thermal management system according to an embodiment of the present application.

[0039] Figure 11 FIG. 8 is a diagram showing an eighth operation mode of a vehicle thermal management system according to an embodiment of the present application.

[0040] Figure 12 FIG. 9 is a diagram showing a ninth operation mode of a vehicle thermal management system according to an embodiment of the present application. DETAILED DESCRIPTION

[0041] Hereinafter, the technical configuration of the vehicle thermal management system is explained in detail as follows according to the drawings.

[0042] Referring to Figures 1 to 3 , the vehicle thermal management system according to an embodiment of the present application is configured to include a heating heat exchanger 26 and a cooling heat exchanger 65, a refrigerant module 1, a first cooling water line 25, a second cooling water line 35, a radiator 27, a third cooling water line 45, a hybrid tank 7, a first valve 2, a second valve 3, a third valve 4, a fourth valve 5, and a fifth valve 6, as a system provided in an electric vehicle or the like.

[0043] The cooling heat exchanger 65 and the heating heat exchanger 26 are provided in the air conditioner case 64 in this order in the air flow direction. The heating heat exchanger 26 exchanges heat with the air in the air conditioner case 64 to heat the air, and the cooling heat exchanger 65 exchanges heat with the air in the air conditioner case 64 to cool the air. An electric heater 66 such as a thermistor (PTC: Positive Temperature Coefficient) that generates heat according to the application of a power source is provided on the downstream side of the heating heat exchanger 26. A temperature adjustment door 67 for adjusting the opening degree of the warm air flow path and the cold air flow path to adjust the exhaust air temperature is provided between the cooling heat exchanger 65 and the heating heat exchanger 26.

[0044] The refrigerant module 1 is provided with a refrigerant circuit 11 of a circulation compressor 12, a condenser 13, an expansion valve 15, and a cooler 16. The compressor 12 sucks in refrigerant and discharges it in a high-temperature and high-pressure gas state after compression. The condenser 13 is configured as a water-cooled condenser that exchanges heat with cooling water. The expansion valve 15 expands the refrigerant that has passed through the condenser 13 to a low-temperature and low-pressure state. The cooler 16 is configured as a water-cooled evaporator that exchanges heat with cooling water. An internal heat exchanger 14 is provided between the condenser 13 and the expansion valve 15 and between the cooler 16 and the compressor 12.

[0045] The first cooling water circuit 25 passes through the heating heat exchanger 26 and exchanges heat with the condenser 13 of the refrigerant circuit 11. The first cooling water circuit 25 is provided with a storage tank 94, a first pump 55, and an electronic component 91. Also, in the first cooling water circuit 25, a second pump 57 is provided between the condenser 13 and the heating heat exchanger 26. The second cooling water circuit 35 passes through the cooling heat exchanger 65 and exchanges heat with the cooler 16 of the refrigerant circuit 11. The second cooling water circuit 35 is provided with a third pump 56.

[0046] The radiator 27 is configured as an integrated air-cooled capacitor that exchanges heat with outdoor air. The third cooling water circuit 45 passes through the radiator 27 and exchanges heat with a battery 92 of the vehicle. The third cooling water circuit 45 branches from the first cooling water circuit 25 toward the storage tank 94 of the electronic component 91 and passes through the battery 92. The fourth pump 58 and a cooling water heater 93 are provided in the third cooling water circuit 45.

[0047] The mixing tank 7 is configured to mix the cooling water of the first cooling water circuit 25, the second cooling water circuit 35, and the third cooling water circuit 45. Also, the mixing tank 7 is configured as a single one and is configured to integrate the cooling water storage function and the valve function. Meanwhile, in the case where the cooling water temperature on the battery 92 side and the cooling water temperature on the cooler 16 side are different, the mixing tank 7 mixes the cooling water according to the mode.

[0048] The first valve 2 is provided between the radiator 27, the electronic component 91, the mixing tank 7, and the cooler 16. The first valve 2 selectively causes the cooling water passing through the radiator 27 to flow to the electronic component 91 or the cooler 16, or selectively causes the cooling water passing through the mixing tank 7 to flow to the cooler 16 or the electronic component 91. The first valve 2 is configured as a four-way directional valve.

[0049] That is, the first valve 2 has a first connection port 21, a second connection port 22, a third connection port 23, and a fourth connection port 24. The first connection port 21 is connected to the radiator 27, and the second connection port 22 is connected to the storage tank 94. Meanwhile, the third connection port 23 is connected to the mixing tank 7, and the fourth connection port 24 is connected to the cooler 16. The cooling water passing through the radiator 27 flows into the first connection port 21 and then is discharged through the second connection port 22 or the fourth connection port 24. Also, the cooling water passing through the mixing tank 7 flows into the third connection port 23 and then is discharged through the fourth connection port 24.

[0050] The second valve 3 is provided between the electronic component 91, the condenser 13, the heating heat exchanger 26, and the radiator 27. The second valve 3 selectively causes the cooling water passing through the electronic component 91 to flow to the condenser 13 or the radiator 27, or selectively causes the cooling water passing through the heating heat exchanger 26 to flow to the radiator 27 or the condenser 13. The second valve 3 is configured as a four-way directional valve.

[0051] That is, the second valve 3 has a first connection port 31, a second connection port 32, a third connection port 33, and a fourth connection port 34. The first connection port 31 is connected to the electronic component 91, and the second connection port 32 is connected to the condenser 13. Meanwhile, the third connection port 33 is connected to the heating heat exchanger 26, and the fourth connection port 34 is connected to a connection unit 98. The connection unit 98, which is a unit that connects three-direction cooling water lines, connects the second valve 3, the third valve 4, and the fourth valve 5 to each other. The cooling water passing through the electronic component 91 flows into the first connection port 31 and then is discharged through the second connection port 32 or the fourth connection port 34. Also, the cooling water passing through the heating heat exchanger 26 flows into the third connection port 33 and then is discharged through the fourth connection port 34 or the second connection port 32.

[0052] The third valve 4 is provided between the second valve 3, the radiator 27, the cooler 16, and the cooling heat exchanger 65. The third valve 4 selectively causes the cooling water passing through the second valve 3 to flow to the radiator 27 or the cooling heat exchanger 65, and selectively causes the cooling water passing through the cooler 16 to flow to the cooling heat exchanger 65 or the radiator 27. The third valve 4 is configured as a four-way directional valve.

[0053] That is, the third valve 4 has a first connection port 41, a second connection port 42, a third connection port 43, and a fourth connection port 44. The first connection port 41 is connected to the radiator 27, and the second connection port 42 is connected to the cooler 16. Meanwhile, the third connection port 43 is connected to the cooling heat exchanger 65, and the fourth connection port 44 is connected to the connection unit 98. Cooling water that has flowed into the fourth connection port 44 through the connection unit 98 is discharged through the first connection port 41 or the third connection port 43. Also, cooling water that has flowed into the second connection port 42 through the cooler 16 is discharged through the third connection port 43 or the first connection port 41.

[0054] The fourth valve 5 is provided between the mixing tank 7, the second valve 3, the third valve 4, and the battery 92. The fourth valve 5 causes cooling water that has passed through the battery 92 to selectively flow to the third valve 4 or the mixing tank 7, and causes cooling water that has passed through the second valve 3 to selectively flow to the mixing tank 7 or the battery 92. Meanwhile, the fourth valve 5 is configured as a three-way directional valve.

[0055] That is, the fourth valve 5 has a first connection port 51, a second connection port 52, and a third connection port 53. The first connection port 51 is connected to the mixing tank 7, the second connection port 52 is connected to the connection unit 98, and the third connection port 53 is connected to the battery 92. Cooling water that has flowed into the third connection port 53 through the battery 92 is discharged through the second connection port 52 or the first connection port 51. Also, cooling water that has flowed into the second connection port 52 through the connection unit 98 is discharged through the first connection port 51 or the third connection port 53.

[0056] The fifth valve 6 is provided between the battery 92, the first valve 2, the electronic components 91, and the mixing tank 7. The fifth valve 6 causes cooling water that has passed through the first valve 2 to flow to the battery 92, or causes cooling water that has passed through the mixing tank 7 to selectively flow to the battery 92 or the electronic components 91, or causes cooling water that has passed through the battery 92 to flow to the electronic components 91. The fifth valve 6 is configured as a three-way directional valve.

[0057] That is, the fifth valve 6 has a first connection port 61, a second connection port 62, and a third connection port 63. The first connection port 61 is connected to the battery 92, the second connection port 62 is connected to the storage tank 94, and the third connection port 63 is connected to the mixing tank 7. Cooling water that has flowed into the second connection port 62 through the storage tank 94 is discharged through the first connection port 61. Also, cooling water that has flowed into the third connection port 63 through the mixing tank 7 is discharged through the first connection port 61 or the second connection port 62. Also, cooling water that has flowed into the first connection port 61 through the battery 92 is discharged through the second connection port 62.

[0058] More specifically, the mixing tank 7 is connected to the cooling heat exchanger 65, the first valve 2, the fourth valve 5, and the fifth valve 6, respectively. That is, the mixing tank 7 has a first connection port 71, a second connection port 72, a third connection port 73, and a fourth connection port 74. The first connection port 71 is connected to the first valve 2, and the second connection port 72 is connected to the cooling heat exchanger 65. Simultaneously, the third connection port 73 is connected to the fourth valve 5, and the fourth connection port 74 is connected to the fifth valve 6.

[0059] Furthermore, the mixing tank 7 is equipped with a rotatable door 75 inside. The door 75 is shaped with a central axis of rotation and plates extending to both sides of the axis of rotation. Depending on the rotation of the door 75, the flow paths inside the mixing tank 7 are separated or connected, thereby performing the cooling water mixing function and the flow path switching function.

[0060] That is, if gate 75 is located as... Figure 2 As shown in the attached diagram above, the first connection port 71 is connected to the third connection port 73, and the second connection port 72 is connected to the fourth connection port 74. In this case, the flow paths of the first connection port 71 and the third connection port 73 are separated from the flow paths of the second connection port 72 and the fourth connection port 74.

[0061] In addition, if the door 75 is like Figure 2 If the middle diagram is rotated 90°, the first connection port 71 is connected to the second connection port 72, and the third connection port 73 is connected to the fourth connection port 74. In this case, the flow paths of the first connection port 71 and the second connection port 72 are separated from the flow paths of the third connection port 73 and the fourth connection port 74.

[0062] At the same time, if door 75 Figure 2 As shown in the attached diagram below, rotating the connector 45° connects the first connector 71 to the second connector 72, and the third connector 73 to the fourth connector 74. In this case, the flow paths of the first connector 71 and the second connector 72 are connected to the flow paths of the third connector 73 and the fourth connector 74, causing the cooling water in the flow paths of the first connector 71 and the second connector 72 to mix with the cooling water in the flow paths of the third connector 73 and the fourth connector 74.

[0063] As described above, depending on the rotation of the door 75, the cooling heat exchanger 65 is connected to the first valve 2, or the fourth valve 5 is connected to the fifth valve 6, or the first valve 2 is connected to the fourth valve 5, or the cooling heat exchanger 65 is connected to the fifth valve 6. Furthermore, the cooling heat exchanger 65, the first valve 2, the fourth valve 5, and the fifth valve 6 are all connected.

[0064] In the following description, refer to Figures 4 to 12 This will provide more detailed examples of how to operate each air conditioning mode.

[0065] ReferenceFigure 4 In the first operating mode, while performing indoor cooling, the battery 92 is cooled by outside air. The first valve 2 connects the radiator 27 and the electronic component 91 and the mixing tank 7 and the cooler 16. The second valve 3 connects the electronic component 91 and the condenser 13 and the cooling heat exchanger 26 and the radiator 27. The third valve 4 connects the cooling heat exchanger 26 and the radiator 27 and the cooler 16 and the cooling heat exchanger 65.

[0066] Furthermore, the mixing tank 7 is connected to the cooling heat exchanger 65 and the first valve 2, the fourth valve 5 allows the cooling water passing through the battery 92 to flow through the third valve 4 to the radiator 27, and the fifth valve 6 allows the cooling water passing through the radiator 27 to flow to the battery 92, thereby cooling the battery 92 by means of external air.

[0067] Cooling water flowing through radiator 27 flows to storage tank 94 via first valve 2, with a portion circulating through first pump 55, electronic component 91, second valve 3, condenser 13, second pump 57, heating heat exchanger 26, second valve 3, connection unit 98, third valve 4, and radiator 27. Another portion of the cooling water flowing to storage tank 94 circulates through third cooling water line 45 through fifth valve 6, fourth pump 58, battery 92, cooling water heater 93, fourth valve 5, connection unit 98, third valve 4, and radiator 27. Simultaneously, cooling water flowing through cooling heat exchanger 65 circulates through mixing tank 7, first valve 2, third pump 56, cooler 16, and third valve 4.

[0068] Reference Figure 5 The second operating mode performs indoor cooling while simultaneously cooling the battery 92 using the cooler 16, or shuts off indoor cooling while still cooling the battery 92 using the cooler 16. The first valve 2 connects the radiator 27 to the electronic component 91 and to the mixing tank 7 and the cooler 16. The second valve 3 connects the electronic component 91 to the condenser 13 and to the heating heat exchanger 26 and the radiator 27. The third valve 4 connects the heating heat exchanger 26 and the radiator 27 and to the cooler 16 and the cooling heat exchanger 65.

[0069] Furthermore, the mixing tank 7 is connected to the first valve 2 and the fourth valve 5, and simultaneously connected to the cooling heat exchange 65 and the fifth valve 6. The fourth valve 5 allows the cooling water passing through the battery 92 to flow to the mixing tank 7, and the fifth valve 6 allows the cooling water passing through the mixing tank 7 to flow to the battery 92, thereby cooling the battery 92 by means of the cooler 16.

[0070] The cooling water passing through the radiator 27 flows to the storage tank 94 through the first valve 2, and circulates through the first pump 55, the electronic components 91, the second valve 3, the condenser 13, the second pump 57, the heating heat exchanger 26, the second valve 3, the connection unit 98, the third valve 4, the radiator 27. Also, the cooling water passing through the battery 92 circulates through the cooling water heater 93, the fourth valve 5, the mixing tank 7, the first valve 2, the third pump 56, the cooler 16, the third valve 4, the cooling heat exchanger 65, the mixing tank 7, the fifth valve 6, the fourth pump 58.

[0071] In this case, in a case where the heat generation amount of the battery 92 is a maximum value (Max), the cooling heat exchanger 65 side blower is turned off to turn off the indoor cooling, and only the cooling of the battery 92 through the cooler 16 is performed.

[0072] Referring to Figure 6 , the third operation mode cools the battery 92 with the cooling water mixed with the cooler 16 while performing the indoor cooling. The first valve 2 connects the radiator 27 with the electronic components 91 and connects the mixing tank 7 with the cooler 16, the second valve 3 connects the electronic components 91 with the condenser 13 and connects the heating heat exchanger 26 with the radiator 27, and the third valve 4 connects the heating heat exchanger 26 with the radiator 27 and connects the cooler 16 with the cooling heat exchanger 65.

[0073] Also, the mixing tank 7 connects the first valve 2 with the cooling heat exchanger 65 while connecting the fourth valve 5 with the fifth valve 6, so that the cooling water in the communication areas of the first valve 2 and the cooling heat exchanger 65 and the fourth valve 5 and the fifth valve 6 is mixed, thereby cooling the battery 92 with the mixed cooling water.

[0074] The cooling water passing through the radiator 27 flows to the storage tank 94 through the first valve 2, and circulates through the first pump 55, the electronic components 91, the second valve 3, the condenser 13, the second pump 57, the heating heat exchanger 26, the second valve 3, the connection unit 98, the third valve 4, the radiator 27. Also, the cooling water passing through the battery 92 circulates through the cooling water heater 93, the fourth valve 5, the mixing tank 7, the fifth valve 6, the fourth pump 58. At the same time, the cooling water passing through the cooling heat exchanger 65 circulates through the mixing tank 7, the first valve 2, the third pump 56, the cooler 16, the third valve 4, the cooling heat exchanger 65. In this case, in the inside of the mixing tank 7, the cooling water passing through the cooler 16 is mixed with the cooling water passing through the battery 92.

[0075] Referring to Figure 7, the fourth operation mode performs heat absorption by the outside air and the electronic component 91 while performing the heating of the room. The first valve 2 connects the radiator 27 with the electronic component 91 and connects the mixing tank 7 with the cooler 16. At the same time, the second valve 3 connects the electronic component 91 with the mixing tank 7 and connects the heating heat exchanger 26 with the condenser 13, and the third valve 4 connects the cooler 16 with the radiator 27 and connects the electronic component 91 with the cooling heat exchanger 65.

[0076] Further, the mixing tank 7 connects the first valve 2 with the fourth valve 5, and the fourth valve 5 causes the cooling water passing through the electronic component 91 to flow to the mixing tank 7 through the second valve 3, and the fifth valve 6 causes the cooling water passing through the radiator 27 to flow to the mixing tank 7 through the third valve 4, thereby performing heat absorption by the outside air and the electronic component 91.

[0077] The cooling water passing through the radiator 27 flows to the storage tank 94 through the first valve 2, and circulates in the first pump 55, the electronic component 91, the second valve 3, the connection unit 98, the fourth valve 5, the mixing tank 7, the first valve 2, the third pump 56, the cooler 16, the third valve 4, the radiator 27. Further, the cooling water passing through the heating heat exchanger 26 circulates in the condenser 13, the second pump 57, the heating heat exchanger 26.

[0078] Referring to Figure 8 , the fifth operation mode performs heat absorption by the outside air, the electronic component 91 and the battery 92 while performing the heating of the room. The first valve 2 connects the radiator 27 with the electronic component 91 and connects the mixing tank 7 with the cooler 16. At the same time, the second valve 3 connects the electronic component 91 with the mixing tank 7 and connects the heating heat exchanger 26 with the condenser 13, and the third valve 4 connects the cooler 16 with the radiator 27 and connects the electronic component 91 with the cooling heat exchanger 65.

[0079] Further, the mixing tank 7 connects the first valve 2 with the fourth valve 5, and the fourth valve 5 causes the cooling water passing through the electronic component 91 to flow to the mixing tank 7 through the second valve 3, and causes the cooling water passing through the battery 92 to flow to the mixing tank 7, and the fifth valve 6 causes the cooling water passing through the radiator 27 to flow to the battery 92, thereby performing heat absorption by the outside air, the electronic component 91 and the battery 92.

[0080] The cooling water passing through the radiator 27 flows to the storage tank 94 through the first valve 2, and a part of it circulates in the first pump 55, the electronic component 91, the second valve 3, the connection unit 98, the fourth valve 5, the mixing tank 7, the first valve 2, the third pump 56, the cooler 16, the third valve 4, the radiator 27. Further, the other part of the cooling water flowing to the storage tank 94 circulates in the fifth valve 6, the fourth pump 58, the battery 92, the cooling water heater 93, the fourth valve 5, the mixing tank 7, the first valve 2, the third pump 56, the cooler 16, the third valve 4, the radiator 27 through the third cooling water line 45.

[0081] Referring to Figure 9The sixth operation mode is a battery warming-up mode in which only the cooling water heater 93 is operated. The fourth valve 5 connects the battery 92 with the mixing tank 7, and the fifth valve 6 connects the mixing tank 7 with the battery 92. The mixing tank 7 connects the fourth valve 5 with the fifth valve 6. The cooling water passing through the battery 92 circulates in the cooling water heater 93, the fourth valve 5, the mixing tank 7, the fifth valve 6, the fourth pump 58, and the battery 92. In this case, the operation of the refrigerant module 1 is shut down, and only the cooling water heater 93 is operated, thereby warming up the battery 92.

[0082] Referring to Figure 10 The seventh operation mode is a battery 92 warming-up mode in which the heat pump is operated together. The first valve 2 connects the radiator 27 with the cooler 16, and the second valve 3 connects the electronic components 91 with the condenser 13 and connects the heating heat exchanger 26 with the battery 92. Also, the third valve 4 connects the cooler 16 with the radiator 27, the fourth valve 5 connects the heating heat exchanger 26 with the battery 92, and the fifth valve 6 connects the battery 92 with the electronic components 91.

[0083] The cooling water passing through the radiator 27 circulates in the first valve 2, the third pump 56, the cooler 16, the third valve 4, and the radiator 27. Also, the cooling water passing through the heating heat exchanger 26 circulates in the second valve 3, the connection unit 98, the fourth valve 5, the cooling water heater 93, the battery 92, the fourth pump 58, the fifth valve 6, the storage tank 94, the first pump 55, the electronic components 91, the second valve 3, the condenser 13, the second pump 57, and the heating heat exchanger 26.

[0084] Referring to Figure 11 The eighth operation mode is a dehumidification and heating mode in winter. The first valve 2 connects the radiator 27 with the storage tank 94 and connects the mixing tank 7 with the cooler 16. The second valve 3 connects the electronic components 91 with the connection unit 98 and connects the heating heat exchanger 26 with the condenser 13. The third valve 4 connects the connection unit 98 with the radiator 27 and connects the cooler 16 with the cooling heat exchanger 65.

[0085] Also, the mixing tank 7 connects the cooling heat exchanger 65 with the first valve 2 and connects the fourth valve 5 with the fifth valve 6. The fourth valve 5 makes the cooling water passing through the connection unit 98 flow to the mixing tank 7, and the fifth valve 6 makes the cooling water passing through the mixing tank 7 flow to the storage tank 94.

[0086] The cooling water passing through the radiator 27 flows to the first valve 2, the storage tank 94, the first pump 55, the electronic components 91, the second valve 3, and the connection unit 98. A part of the cooling water in the connection unit 98 flows to the radiator 27 through the third valve 4. Another part of the cooling water in the connection unit 98 circulates through the fourth valve 5, the mixing tank 7, the fifth valve 6, the storage tank 94, the first pump 55, the electronic components 91, the second valve 3, and the connection unit 98. Also, the cooling water passing through the heating heat exchanger 26 circulates through the second valve 3, the condenser 13, the second pump 57, and the heating heat exchanger 26.

[0087] Referring to Figure 12 , the ninth operation mode as a waste heat heating mode, the heat pump will be closed. The second valve 3 connects the electronic components 91 with the condenser 13 and connects the heating heat exchanger 26 with the connection unit 98. The fourth valve 5 connects the connection unit 98 with the battery 92, and the fifth valve 6 connects the battery 92 with the electronic components 91. The cooling water passing through the electronic components 91 circulates through the second valve 3, the condenser 13, the second pump 57, the heating heat exchanger 26, the second valve 3, the connection unit 98, the fourth valve 5, the cooling water heater 93, the battery 92, the fourth pump 58, the fifth valve 6, the storage tank 94, and the first pump 55.

[0088] The present application, by this configuration, while achieving cooling, heating, and dehumidification in the vehicle cabin, can also achieve cooling and heat absorption of the electronic components 91 and cooling and heating of the battery 92. The mixing tank 7 is configured to separate the flow paths inside or mix the cooling water according to the operation mode. Also, it is configured as an active separate cooling system according to the heat generation amount of the battery 92, so that the power consumption of the electric compressor 12 can be reduced.

[0089] At the same time, due to the configuration of the mixing tank 7, in a specific operation mode, exhaust according to contraction / expansion according to the change in cooling water temperature can be achieved. Also, the configuration of the refrigerant line is simplified by the cooling water line, and the price competitiveness is ensured by reducing the number of heat exchangers and refrigerant valves.

[0090] In addition, when the heat pump heating operation is performed, the outside air heat absorption is performed using the water-cooled evaporator (cooler 16), and the waste heat absorption of the electronic components 91 and the battery 92 is performed using the cooler 16, so as to improve the heat pump heating performance. Also, the indoor heating can be achieved only by the waste heat of the electronic components 91 and the battery 92, and the heating of the battery 92 can be achieved by the heat pump.

[0091] So far, the vehicle thermal management system according to the present application has been described with reference to the embodiments shown in the drawings, but this is only exemplary, and as should be understood by those skilled in the art, various modifications and equivalent other embodiments can be achieved thereby. Therefore, the true technical protection scope should be determined according to the technical idea of the scope of the claims.

Claims

1. A thermal management system for a vehicle, comprising: a heating heat exchanger that exchanges heat with air in an air conditioning case to heat the air; a cooling heat exchanger that exchanges heat with the air in the air conditioning case to cool the air; a refrigerant line that circulates through a compressor, a condenser, an expansion valve, and a cooler; a first cooling water line that passes through the heating heat exchanger and exchanges heat with the condenser of the refrigerant line; a second cooling water line that passes through the cooling heat exchanger and exchanges heat with the cooler of the refrigerant line; a radiator that exchanges heat between cooling water and outdoor air; a third cooling water line that passes through the radiator and exchanges heat with a battery of the vehicle; a mixing tank configured to mix cooling water of the first cooling water line, the second cooling water line, and the third cooling water line; a first valve provided between the radiator, an electronic component, the mixing tank, and the cooler, and configured to selectively flow cooling water that has passed through the radiator to the electronic component or the cooler, or to selectively flow cooling water that has passed through the mixing tank to the cooler or the electronic component, wherein the first cooling water line passes through the electronic component of the vehicle.

2. The thermal management system for a vehicle according to claim 1, wherein the mixing tank is configured as a single unit and is configured to integrate a cooling water storage function and a valve function.

3. The thermal management system for a vehicle according to claim 1, wherein in a case where a cooling water temperature on the battery side and a cooling water temperature on the cooler side are different, the mixing tank mixes cooling water according to a mode.

4. The thermal management system for a vehicle according to claim 1, further comprising: a second valve provided between the electronic component, the condenser, the heating heat exchanger, and the radiator, and configured to selectively flow cooling water that has passed through the electronic component to the condenser or the mixing tank, or to selectively flow cooling water that has passed through the heating heat exchanger to the radiator or the condenser.

5. The thermal management system for a vehicle according to claim 4, further comprising: a third valve provided between the second valve, the radiator, the cooler, and the cooling heat exchanger, and configured to selectively flow cooling water that has passed through the second valve to the radiator or the cooling heat exchanger, or to selectively flow cooling water that has passed through the cooler to the cooling heat exchanger or the radiator.

6. The thermal management system for a vehicle according to claim 5, further comprising: a fourth valve provided between the mixing tank, the second valve, the third valve, and the battery, and configured to selectively flow cooling water that has passed through the battery to the third valve or the mixing tank, or to selectively flow cooling water that has passed through the second valve to the mixing tank or the battery.

7. The thermal management system for a vehicle according to claim 6, further comprising: ​ A fifth valve is provided between the battery, the first valve, the electronic component, and the mixing tank, so that cooling water passing through the first valve flows to the battery, or so that cooling water passing through the mixing tank selectively flows to the battery or the electronic component, or so that cooling water passing through the battery flows to the electronic component.

8. The thermal management system for a vehicle according to claim 7, wherein The mixing tank is connected to the cooling heat exchanger, the first valve, the fourth valve, and the fifth valve, and is internally provided with a rotating door, and as the door rotates, the flow path inside the mixing tank is partitioned or communicated, thereby performing a cooling water mixing function and a flow path switching function.

9. The thermal management system for a vehicle according to claim 8, wherein According to the rotation of the door, the cooling heat exchanger is communicated with the first valve, or the fourth valve is communicated with the fifth valve, or the first valve is communicated with the fourth valve, or the cooling heat exchanger is communicated with the fifth valve, or all of the cooling heat exchanger, the first valve, the fourth valve, and the fifth valve are communicated.

10. The thermal management system for a vehicle according to claim 8, wherein When the indoor cooling mode, the first valve connects the radiator and the electronic component and connects the mixing tank and the cooler, the second valve connects the electronic component and the condenser and connects the heating heat exchanger and the radiator, the third valve connects the heating heat exchanger and the radiator and connects the cooler and the cooling heat exchanger, The mixing tank connects the cooling heat exchanger and the first valve, the fourth valve causes cooling water passing through the battery to flow to the radiator via the third valve, and the fifth valve causes cooling water passing through the radiator to flow to the battery, thereby cooling the battery by external air.

11. The thermal management system for a vehicle according to claim 8, wherein When the indoor cooling mode, The first valve connects the radiator and the electronic component and connects the mixing tank and the cooler, the second valve connects the electronic component and the condenser and connects the heating heat exchanger and the radiator, the third valve connects the heating heat exchanger and the radiator and connects the cooler and the cooling heat exchanger, The mixing tank connects the first valve and the fourth valve while connecting the cooling heat exchanger and the fifth valve, the fourth valve causes cooling water passing through the battery to flow to the mixing tank, and the fifth valve causes cooling water passing through the mixing tank to flow to the battery, thereby cooling the battery by the cooler.

12. The thermal management system for a vehicle according to claim 11, wherein The mixing tank connects the first valve and the fourth valve while connecting the cooling heat exchanger and the fifth valve, and mixes cooling water in the communication areas of the first valve and the fourth valve and the cooling heat exchanger and the fifth valve, thereby cooling the battery with the mixed cooling water.

13. The thermal management system for a vehicle according to claim 8, wherein when the indoor heating mode, the first valve connects the radiator with the electronic component and connects the mixing tank with the cooler, the second valve connects the electronic component with the mixing tank and connects the heating heat exchanger with the condenser, the third valve connects the cooler with the radiator and connects the electronic component with the cooling heat exchanger, the mixing tank connects the first valve with the fourth valve, the fourth valve causes the cooling water passing through the electronic component to flow to the mixing tank through the second valve, thereby absorbing heat by the outside air and the electronic component.

14. The thermal management system for a vehicle according to claim 8, wherein when the indoor heating mode, the first valve connects the radiator with the electronic component and connects the mixing tank with the cooler, the second valve connects the electronic component with the mixing tank and connects the heating heat exchanger with the condenser, the third valve connects the cooler with the radiator and connects the electronic component with the cooling heat exchanger, the mixing tank connects the first valve with the fourth valve, the fourth valve causes the cooling water passing through the electronic component to flow to the mixing tank through the second valve, while causing the cooling water passing through the battery to flow to the mixing tank, the fifth valve causes the cooling water passing through the radiator to flow to the battery, thereby absorbing heat by the outside air, the electronic component and the battery.

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