Coolant system for vehicle

Abstract

A coolant system for a vehicle according to the present invention implements various operation modes by using a plurality of coolant lines and a pair of 8-way direction switching valves, and can thus simultaneously perform cooling / waste heat recovery of an electronic component and a battery and vehicle indoor air conditioning-side cooling / heating.

Description

Vehicle Coolant System

[0001] The present disclosure relates to a cooling water system applicable to electric vehicles.

[0002] Electric vehicles have recently been gaining popularity as eco-friendly vehicles. Electric vehicles utilize battery-powered motors, offering the advantages of zero carbon dioxide emissions, low noise, and high energy efficiency. A key technology in these electric vehicles is battery module technology. Research is actively underway to reduce the weight and miniaturization of battery modules, as well as shorten charging times.

[0003] Maintaining an optimal temperature environment is crucial for battery modules to achieve high performance and long lifespan. However, maintaining this optimal temperature environment is difficult due to the heat generated during operation and external temperature fluctuations.

[0004] As electric vehicles develop and electric vehicle systems become more complex, the importance of electric vehicle thermal management systems using coolant is increasing.

[0005] In electric vehicle systems, components that require thermal management through coolant include electrical components (motors, OTCs, EPCUs, etc.) and batteries. The coolant system circulates coolant through coolant valves and pumps to a radiator or chiller to dissipate or recover heat generated by the electrical components and batteries, or to heat low-temperature batteries.

[0006] These cooling systems typically include multiple coolant lines, with different coolant circuits configured for each operating mode to achieve heating and cooling. Cooling and waste heat recovery for electrical components and batteries utilize coolant, while heating and cooling the vehicle interior utilizes refrigerant. The use of coolant and refrigerant is differentiated by cooling line.

[0007] [Prior Document] Korean Patent Publication No. 10-2022-0106453 (July 29, 2022)

[0008] According to the present disclosure, a vehicle cooling system capable of cooling / recovering waste heat of electrical components and batteries and heating / cooling of the vehicle interior air conditioning system through cooling water control can be provided.

[0009] A cooling water system according to the present disclosure comprises a valve configured as an 8-way directional valve connected to a plurality of cooling water lines to control the direction of movement of cooling water moving to each cooling water line, wherein the valves are provided in pairs of a first valve and a second valve, the first valve is connected to a first cooling water line among the plurality of cooling water lines to control the direction of movement of cooling water moving to each first cooling water line, the second valve is connected to a second cooling water line among the plurality of cooling water lines to control the direction of movement of cooling water moving to each second cooling water line, and the first valve and the second valve are connected to a plurality of cooling water connection lines so that cooling water can move between the first valve and the second valve.

[0010] In addition, the first coolant line may include a first-first coolant line passing through a battery and a water heater, a first-second coolant line passing through electrical components, and a chiller; the second coolant line may include a second-first coolant line passing through a water-cooled condenser and an HVAC heater; a second-second coolant line passing through an HVAC cooler; and a second-third coolant line passing through a water-cooled evaporator; and the plurality of coolant connection lines may include a first connection line and a second connection line passing through a radiator.

[0011] In addition, the first valve is a coolant system for the driving unit side including the electric components and the battery, and the second valve is a coolant system for the vehicle interior side, and the drive unit side and the vehicle interior air conditioning side can be integrated and thermally managed with coolant through the control of the first valve and the second valve which are connected to each other.

[0012] In addition, the valve may be installed such that a first water pump is installed on one side and a second water pump is installed on the other side, and the first water pump and the second water pump are positioned in opposite directions from each other on the side.

[0013] In addition, the valve includes a valve housing and a valve cylinder that is accommodated and rotated in the valve housing, the valve housing forms eight coolant inlets and outlets, and the valve cylinder is configured such that a first valve cylinder and a second valve cylinder are stacked vertically and each forms 16 coolant holes, and among the 16 coolant holes, eight coolant holes may form a first hole set and the other eight coolant holes may form a second hole set.

[0014] In addition, if the eight coolant inlets are referred to as the first to eighth coolant inlets in a clockwise direction, the first water pump may be installed at the third coolant inlet, and the second water pump may be installed at the seventh coolant inlet.

[0015] In addition, in the first valve, the 1-1 coolant line connects the 7th coolant inlet and the 8th coolant inlet and the 1-2 coolant line connects the 3rd coolant inlet and the 4th coolant inlet and the 1-3 coolant line connects the 5th coolant inlet and the 6th coolant inlet and the 1-3 water pump may be located on the 1-2 coolant line and the 2nd water pump may be located on the 1-1 coolant line.

[0016] In addition, in the second valve, the second-1 coolant line connects the second coolant inlet and the third coolant inlet, the second-2 coolant line connects the fourth coolant inlet and the fifth coolant inlet, the second-3 coolant line connects the sixth coolant inlet and the seventh coolant inlet, and the first water pump may be located on the second-1 coolant line and the second water pump may be located on the second-3 coolant line.

[0017] In addition, the first connecting line may connect the first coolant inlet / outlet of the first valve and the eighth coolant inlet / outlet of the second valve, and the second connecting line may connect the second coolant inlet / outlet of the first valve and the first coolant inlet / outlet of the second valve.

[0018] In addition, the cooling water holes of the valve cylinder are arranged in a row along the outer circumference of the valve cylinder, and the cooling water holes of the first hole set and the cooling water holes of the second hole set can be arranged alternately.

[0019] In addition, if the cooling water holes of the first set of holes are respectively referred to as first to eighth holes (a1 to a8) in a clockwise order, the first valve cylinder may form a first flow path, and the first flow path may include a flow path connecting the first hole (a1) and the eighth hole (a8); a flow path connecting the second hole (a2) and the fifth hole (a5); a flow path connecting the third hole (a3) ​​and the fourth hole (a4); and a flow path connecting the sixth hole (a6) and the seventh hole (a7).

[0020] In addition, if the cooling water holes of the second set of holes are respectively referred to as first to eighth holes (b1 to b8) in a clockwise order, the second valve cylinder may form a second flow path, and the second flow path may include a flow path connecting the first hole (b1) and the fourth hole (b4); a flow path connecting the second hole (b2) and the third hole (b3); a flow path connecting the fifth hole (b5) and the eighth hole (b8); and a flow path connecting the sixth hole (b6) and the seventh hole (b7).

[0021] In addition, among the eight coolant inlets and outlets in the first valve, any two coolant inlets and outlets are connected to the first-first coolant line, the other two coolant inlets and outlets are connected to the first-second coolant line, and the other two coolant inlets and outlets are connected to the first-third coolant line; among the eight coolant inlets and outlets in the second valve, any two coolant inlets and outlets and any two coolant inlets and outlets are connected to the second-first coolant line, the other two coolant inlets and outlets are connected to the second-second coolant line, and the remaining one coolant inlet and outlet of the eight coolant inlets and outlets in the first valve and the remaining one coolant inlet and outlet of the eight coolant inlets and outlets in the second valve are connected to the first connection line, and the other one of the eight coolant inlets and outlets in the first valve is connected to the first connection line. The remaining one coolant inlet and the other remaining one coolant inlet among the eight coolant inlets from the second valve can be connected to the second connecting line.

[0022] In addition, different cooling water circuits are formed for each operating mode of the first valve or the second valve, and the operating modes can be configured to be at least six or more.

[0023] In addition, among the above operation modes, the first operation mode may form a cooling water circuit circulating through the 1-1 cooling water line and the 1-3 cooling water line, a cooling water circuit circulating through the 2-1 cooling water line, a cooling water circuit circulating through the 2-2 cooling water line and the 2-3 cooling water line, and a cooling water circuit circulating through the 1-2 cooling water line and the 1st and 2nd connection lines.

[0024] In addition, among the above operation modes, the second operation mode may form a cooling water circuit circulating through the 1-1 cooling water line and the 1-3 cooling water line, a cooling water circuit circulating through the 2-1 cooling water line, a cooling water circuit circulating through the 2-1 cooling water line, a cooling water circuit circulating through the 2-2 cooling water line, and a cooling water circuit circulating through the 2-3 cooling water line and the 1st and 2nd connection lines.

[0025] In addition, among the above operation modes, the third operation mode may form a cooling water circuit circulating through the 1-1 cooling water line, a cooling water circuit circulating through the 1-2 cooling water line, a cooling water circuit circulating through the 2-2 cooling water line and the 2-3 cooling water line, a cooling water circuit circulating through the 2-1 cooling water line, and a cooling water circuit circulating through the 1-3 cooling water line and the 1st and 2nd connection lines.

[0026] In addition, among the above operation modes, the fourth operation mode may form a cooling water circuit circulating through the 1-1 cooling water line and the 1-3 cooling water line, a cooling water circuit circulating through the 2-1 cooling water line, a cooling water circuit circulating through the 2-2 cooling water line and the 2-3 cooling water line, and a cooling water circuit circulating through the 1-2 cooling water line, the 2-1 cooling water line, and the 1st and 2nd connection lines.

[0027] In addition, among the above operation modes, the fifth operation mode may form a cooling water circuit circulating through the 1-1 cooling water line, a cooling water circuit circulating through the 1-2 cooling water line and the 1-3 cooling water line, a cooling water circuit circulating through the 2-1 cooling water line, a cooling water circuit circulating through the 2-2 cooling water line, and a cooling water circuit circulating through the 2-3 cooling water line and the 1st and 2nd connection lines.

[0028] In addition, among the above operation modes, the sixth operation mode may form a cooling water circuit circulating through the 1-2 cooling water line, a cooling water circuit circulating through the 2-1 cooling water line, a cooling water circuit circulating through the 2-2 cooling water line and the 2-3 cooling water line, and a cooling water circuit circulating through the 1-1 cooling water line, the 1-3 cooling water line, and the 1st and 2nd connection lines.

[0029] According to the present disclosure, cooling / waste heat recovery of electrical components and batteries and heating / cooling of the vehicle interior air conditioning system can be performed simultaneously by controlling the circulation of coolant through a pair of valves.

[0030] FIG. 1 is a configuration diagram of a cooling water system according to one embodiment of the present disclosure.

[0031] FIG. 2 is a drawing showing a valve and a water pump according to one embodiment of the present disclosure.

[0032] FIG. 3 is a drawing showing a valve cylinder according to one embodiment of the present disclosure.

[0033] FIG. 4 is a drawing showing a first valve cylinder among valve cylinders according to one embodiment of the present disclosure.

[0034] FIG. 5 is a drawing showing a second valve cylinder among valve cylinders according to one embodiment of the present disclosure.

[0035] FIG. 6 is a schematic diagram of a valve cylinder viewed from the side according to one embodiment of the present disclosure.

[0036] FIG. 7 is a conceptual diagram illustrating a flow path of a cooling water system according to one embodiment of the present disclosure.

[0037] FIGS. 8 to 13 are drawings showing operation modes 1 to 6 of a cooling water system according to one embodiment of the present disclosure.

[0038] [Explanation of symbols]

[0039] 100: Valve

[0040] 101: Valve 1

[0041] 102: Second valve

[0042] 110H: Valve housing

[0043] 110S: Valve cylinder

[0044] 120: Water pump

[0045] 10: Battery

[0046] 20: Battlefield components

[0047] 30: Chiller

[0048] 40: Water heater

[0049] 50: Radiator

[0050] 60: Water-cooled evaporator

[0051] 70: HVAC heater

[0052] 80: HVAC cooler

[0053] 90: Water-cooled condenser

[0054] The present disclosure is described in detail below with reference to the attached drawings. However, these are merely examples and are not limited to the specific embodiments exemplified in the present disclosure.

[0055]

[0056] A cooling water system (1000) according to an embodiment of the present disclosure can be applied to an electric vehicle.

[0057] Referring to FIG. 1, a cooling water system (1000) according to one embodiment of the present disclosure may be configured to include a plurality of cooling water lines (L), a plurality of cooling water connection lines (LC), a plurality of cooling water connection lines (LC), a pair of valves (100), and a water pump (120).

[0058] A pair of valves (100) are provided with a plurality of first coolant lines (L1) and a plurality of second coolant lines (L2), respectively, and a pair of valves (100) can be connected to each other by a plurality of coolant connection lines (LC). A battery (10), an electrical component (20), a chiller (30), a water heater (40), a radiator (50), an evaporator (60), an HVAC heater (70), an HVAC cooler (80), and a water-cooled condenser (90) can be selectively arranged in the plurality of first coolant lines (L1), the plurality of second coolant lines (L2), and the plurality of coolant connection lines (LC).

[0059] The first valve (101) is connected to the first coolant line (L1) among the plurality of coolant lines (L) and controls the direction of movement of coolant moving to each first coolant line (L1), and the second valve (102) is connected to the second coolant line (L2) among the plurality of coolant lines (L) and can control the direction of movement of coolant moving to each second coolant line (L2).

[0060] Additionally, a plurality of coolant connection lines (LC) can connect the first valve (101) and the second valve (102) so that coolant moves between the first valve (101) and the second valve (102).

[0061] The valve (100) is provided as a pair, consisting of a first valve (101) and a second valve (102).

[0062] Referring to FIGS. 2 to 7, the valve (100) may include a valve housing (110H) and a valve cylinder (110S) that is accommodated in the valve housing (110H) and rotates.

[0063] The valve housing (110H) forms eight coolant inlets (w). The eight coolant inlets (w) of the valve housing (110H) have the same configuration as the eight coolant inlets (w) of the valve (100), forming an 8-way configuration. At this time, the coolant inlets (w) of the valve housing (110H) can be configured in the form of a flow path penetrating the inner and outer surfaces of the valve housing (110H).

[0064] The valve cylinder (110S) may be composed of a first valve cylinder (110S1) and a second valve cylinder (110S2). The first valve cylinder (110S1) and the second valve cylinder (110S2) may each form 16 cooling water holes (H). Eight of the 16 cooling water holes (H) may form a first hole set (a1 to a8), and the other eight cooling water holes may form a second hole set (b1 to b8). The cooling water holes of the first hole set (a1 to a8) and the cooling water holes of the second hole set (b1 to b8) may be arranged alternately. The 16 cooling water holes (H) may be arranged in a row along the outer circumference of the valve cylinder (110S).

[0065] The valve cylinder (110S) may be configured in a form in which a first valve cylinder (110S1) and a second valve cylinder (110S2) are stacked vertically. The first valve cylinder (110S1) and the second valve cylinder (110S2) may be stacked vertically inside the valve housing (110H). The valve cylinder (110S) may be provided to rotate clockwise or counterclockwise in the valve housing (110H).

[0066] Each of the first valve cylinder (110S1) and the second valve cylinder (110S2) can have 16 cooling water holes (H). Of the 16 cooling water holes (H), 8 cooling water holes can form a first hole set (a1 to a8), and the other 8 cooling water holes can form a second hole set (b1 to b8).

[0067] The cooling water holes (H) of the valve cylinder (110S) are arranged in a row along the outer circumference of the valve cylinder (110S), and the cooling water holes of the first hole set (a1 to a8) and the cooling water holes of the second hole set (b1 to b8) can be arranged alternately.

[0068] The valve cylinder (110S) forms a flow path (F) inside, and a first flow path (f1) may be formed in the first valve cylinder (110S1) and a second flow path (f2) may be formed in the second valve cylinder (110S2).

[0069] If the coolant holes of the first set of holes (a1 to a8) are referred to as the first to eighth holes (a1 to a8) in order clockwise, the first valve cylinder (110S1) can form a first flow path (f1). Referring to FIG. 4, the first flow path (f1) can include a flow path connecting the first hole (a1) and the eighth hole (a8), a flow path connecting the second hole (a2) and the fifth hole (a5), a flow path connecting the third hole (a3) ​​and the fourth hole (a4), and a flow path connecting the sixth hole (a6) and the seventh hole (a7).

[0070] If the coolant holes of the second hole set (b1 to b8) are referred to as the first to eighth holes (b1 to b8) in clockwise order, the second valve cylinder (110S2) can form a second flow path (f2). Referring to FIG. 5, the second flow path (f2) can include a flow path connecting the first hole (b1) and the fourth hole (b4), a flow path connecting the second hole (b2) and the third hole (b3), a flow path connecting the fifth hole (b5) and the eighth hole (b8), and a flow path connecting the sixth hole (b6) and the seventh hole (b7).

[0071] Since the first valve cylinder (110S1) and the second valve cylinder (110S2) are configured to be stacked one above the other, the first flow path (f1) and the second flow path (f2) can also be formed by being stacked one above the other. Fig. 3 shows the first flow path (f1) and the second flow path (f2) overlapping each other, with the first flow path (f1) represented by a dotted line and the second flow path (f2) represented by a solid line.

[0072] The valve cylinder (110S) is accommodated inside the valve housing (110H) and rotates so that the first flow path (f1) or the second flow path (f2) and the coolant inlet / outlet (w) of the valve housing (110H) can be connected to each other.

[0073] The valve housing (110H) can form eight coolant inlets (w). The eight coolant inlets (w) can be formed as first to eighth coolant inlets (w1 to w8) in order from a clockwise direction. The eight coolant inlets (w) can be arranged in a row along the outer circumference of the valve housing (110H).

[0074] The inner side of each coolant inlet (w) of the valve housing (110H) is connected to the coolant hole (H) of the valve cylinder (110S), and the outer side can be selectively connected to the first coolant line (L1), the second coolant line (L2), and the coolant connection line (LC).

[0075] As the valve cylinder (110S) rotates, the coolant inlet / outlet (w) and the coolant hole (H) can be connected or closed. As the valve cylinder (110S) rotates, the first set of holes (a1 to a8) and the second set of holes (b1 to b8) are alternately connected to the coolant inlet / outlet (w). When the first set of holes (a1 to a8) is located at the coolant inlet / outlet (w), the first flow path (f1) can be connected to the coolant inlet / outlet (w), and when the second set of holes (b1 to b8) is located at the coolant inlet / outlet (w), the second flow path (f2) can be connected to the coolant inlet / outlet (w). When one of the first set of holes (a1 to a8) and the second set of holes (b1 to b8) is connected to the coolant inlet / outlet (w), the other one is closed.

[0076] The first flow path (f1) and the second flow path (f2) of the valve cylinder (110S) may be configured in a stacked form. For example, FIG. 6 is a conceptual drawing of the flow path (F) of the valve cylinder (110S). When the valve cylinder (110S) is viewed from the side, the first flow path (f1) and the second flow path (f2) are each formed inside the valve cylinder (110S), and the first flow path (f1) is formed on top of the second flow path (f2) to have a stacked structure.

[0077] The valve (110) may be configured as a double cylinder structure in which the flow path (F) is composed of two sets (f1, f2) in the valve cylinder (110S). This provides a variety of flow paths, thereby enabling the cooling water system to be implemented in a wider range of operating modes, and improves the packaging of the entire system.

[0078] The valve cylinder (110S) has cooling water holes (H) arranged in a row and at equal angles. Accordingly, the valve (100) can change its operating mode by a constant unit rotation angle.

[0079] The valve (100) may be equipped with a pair of water pumps (120). The valve (100) may have a first water pump (121) installed on one side and a second water pump (122) installed on the other side, and the first water pump (121) and the second water pump (122) may be installed so as to be positioned in opposite directions from the side. The first water pump (121) and the second water pump (122) may be installed on the side of the first valve (101) and the second valve (102), respectively, and may be installed so that their respective positions are 180° from each other. Referring to FIG. 2, among a pair of water pumps (120), the first water pump (121) may be installed at the third cooling water inlet (w3), and the second water pump (122) may be installed at the seventh cooling water inlet (w3).

[0080] Referring to FIG. 7, in the first valve (101), the 1-1 coolant line (L1-1) can connect the 7th coolant inlet (w7) and the 8th coolant inlet (w8), the 1-2 coolant line (L1-2) can connect the 3rd coolant inlet (w3) and the 4th coolant inlet (w4), and the 1-3 coolant line (L1-3) can connect the 5th coolant inlet (w5) and the 6th coolant inlet (w6).

[0081] At this time, the first water pump (121) may be located on the 1-2 cooling water line (L1-2) and the second water pump (122) may be located on the 1-1 cooling water line (L1-1).

[0082] In the second valve (102), the second-first coolant line (L2-1) can connect the second coolant inlet (w2) and the third coolant inlet (w2), the second-second coolant line (L2-2) can connect the fourth coolant inlet (w4) and the fifth coolant inlet (w5), and the second-third coolant line (L2-3) can connect the sixth coolant inlet (w6) and the seventh coolant inlet (w7).

[0083] At this time, the first water pump (121) may be located on the 2-1 cooling water line (L2-1) and the second water pump (122) may be located on the 2-3 cooling water line (L2-3).

[0084] The first connecting line (LC1) can connect the first cooling water inlet (w1) of the first valve (101) and the eighth cooling water inlet (w8) of the second valve (102), and the second connecting line (LC2) can connect the second cooling water inlet (w2) of the first valve (101) and the first cooling water inlet (w1) of the second valve (102).

[0085] As the valve cylinder (110S) is driven to rotate, the matching between each coolant inlet / outlet (w) of the valve housing (110H) and each coolant hole (H) of the valve cylinder (110S) changes, and accordingly, the coolant circuit of the system (1000) can be formed differently for each operating mode.

[0086] Referring back to FIG. 1 and FIG. 7, the first coolant line (L1) may include a first-first coolant line (L1-1) passing through the battery (10) and the water heater (40), a first-second coolant line (L1-2) passing through the electrical component (20), and a first-third coolant line (L1-3) passing through the chiller (30).

[0087] Additionally, the second coolant line (L2) may include a second-first coolant line (L2-1) passing through a water-cooled condenser (90) and an HVAC heater (70), a second-second coolant line (L2-2) passing through an HVAC cooler (80), and a second-third coolant line (L2-3) passing through a water-cooled evaporator (60).

[0088] And the plurality of coolant connection lines (LC) may include a first connection line (LC1) and a second connection line (LC2) passing through a radiator (50).

[0089] The first valve (101) may be a coolant system for the driving unit side including the electrical components (20) and the battery (10), and the second valve (102) may be a coolant system for the vehicle interior air conditioning side. By controlling the first valve (101) and the second valve (102) that are connected to each other, the drive unit side and the vehicle interior air conditioning side can be integrated with the coolant and thermally managed.

[0090] This can implement not only the cooling / cooling / waste heat recovery mode operation of the driving unit side including the battery (10) and the electrical components (20) through the control of the first valve (101) and the second valve (102) which are connected to each other, but also the cooling / heating mode simultaneously on the vehicle interior air conditioning side.

[0091] Furthermore, with recent tightening of environmental regulations, it is becoming difficult to directly purify refrigerant in the vehicle's interior air conditioning system. This problem can be solved by replacing the refrigerant with coolant.

[0092] Referring to FIGS. 1 and 7, the cooling water system (1000) according to the present disclosure may be configured such that among the eight cooling water inlets (w) in the first valve (101), two cooling water inlets (w) may be connected to the first-first cooling water line (L1-1), the other two cooling water inlets (w) may be connected to the first-second cooling water line (L1-2), and the other two cooling water inlets (w) may be connected to the first-third cooling water line (L1-3).

[0093] Among the eight coolant inlets (w) in the second valve (102), two coolant inlets (w) may be connected to the second-first coolant line (L2-1), the other two coolant inlets (w) may be connected to the second-second coolant line (L2-2), and the other two coolant inlets (w) may be connected to the second-third coolant line (L2-3).

[0094] One remaining coolant inlet (w) among the eight coolant inlets (w) in the first valve (101) and one remaining coolant inlet (w) among the eight coolant inlets (w) in the second valve (102) can be connected to the first connecting line (LC1).

[0095] Among the eight cooling water inlets (w) in the first valve (101), one remaining cooling water inlet (w) and among the eight cooling water inlets (w) in the second valve (102), one remaining cooling water inlet (w) can be connected to the second connection line (LC2).

[0096] Different cooling water circuits may be formed depending on the operating mode (M) of the first valve (101) or the second valve (102). The operating modes (M) may be configured in at least six or more configurations. Hereinafter, six of the possible operating modes (M) will be described with reference to FIGS. 8 to 13.

[0097] Referring to FIG. 8, among the operation modes (M), the first operation mode (M1) can form a cooling water circuit circulating through the 1-1 cooling water line (L1-1) and the 1-3 cooling water line (L1-3), a cooling water circuit circulating through the 2-1 cooling water line (L2-1), a cooling water circuit circulating through the 2-2 cooling water line (L2-2) and the 2-3 cooling water line (L2-3), and a cooling water circuit circulating through the 1-2 cooling water line (L1-2) and the 1st and 2nd connection lines (LC1, LC2).

[0098] Referring to FIG. 9, the second operation mode (M2) among the operation modes (M) can form a cooling water circuit circulating through the 1st cooling water line (L1-1) and the 1st cooling water line (L1-3), a cooling water circuit circulating through the 2nd cooling water line (L2-1), a cooling water circuit circulating through the 2nd cooling water line (L2-1), a cooling water circuit circulating through the 2nd cooling water line (L2-2), and a cooling water circuit circulating through the 2nd cooling water line (L2-3) and the 1st and 2nd connection lines (LC1, LC2).

[0099] Referring to FIG. 10, the third operation mode (M3) among the operation modes (M) can form a cooling water circuit circulating through the 1st cooling water line (L1-1), a cooling water circuit circulating through the 1st-2nd cooling water line (L1-2), a cooling water circuit circulating through the 2nd-2nd cooling water line (L2-2) and the 2nd-3rd cooling water line (L2-3), a cooling water circuit circulating through the 2nd-1st cooling water line (L2-1), and a cooling water circuit circulating through the 1st-3rd cooling water line (L1-3) and the 1st and 2nd connection lines (LC1, LC2).

[0100] Referring to FIG. 11, the fourth operation mode (M4) among the operation modes (M) can form a cooling water circuit circulating through the first-first cooling water line (L1-1) and the first-third cooling water line (L1-3), a cooling water circuit circulating through the second-first cooling water line (L2-1), a cooling water circuit circulating through the second-second cooling water line (L2-2) and the second-third cooling water line (L2-3), and a cooling water circuit circulating through the first-second cooling water line (L1-2), the second-first cooling water line (L2-1), and the first and second connection lines (LC1, LC2).

[0101] Referring to FIG. 12, the fifth operation mode (M5) among the operation modes (M) can form a cooling water circuit circulating through the first-first cooling water line (L1-1), a cooling water circuit circulating through the first-second cooling water line (L1-2) and the first-third cooling water line (L1-3), a cooling water circuit circulating through the second-first cooling water line (L2-1), a cooling water circuit circulating through the second-second cooling water line (L2-2), and a cooling water circuit circulating through the second-third cooling water line (L2-3) and the first and second connection lines (LC1, LC2).

[0102] Referring to FIG. 13, the sixth operation mode (M6) among the operation modes (M) can form a cooling water circuit circulating through the 1st-2nd cooling water line (L1-2), a cooling water circuit circulating through the 2nd-1st cooling water line (L2-1), a cooling water circuit circulating through the 2nd-2nd cooling water line (L2-2) and the 2nd-3rd cooling water line (L2-3), and a cooling water circuit circulating through the 1st-1st cooling water line (L1-1), the 1st-3rd cooling water line (L1-3), and the 1st and 2nd connection lines (LC1, LC2).

[0103]

[0104] The embodiments of the present disclosure described above are merely illustrative, and those skilled in the art will readily appreciate that various modifications and equivalent other embodiments are possible. Therefore, it should be understood that the present disclosure is not limited to the forms set forth in the detailed description above. Accordingly, the true technical protection scope of the present disclosure should be defined by the technical spirit of the appended claims. Furthermore, it should be understood that the present disclosure includes all modifications, equivalents, and alternatives within the spirit and scope of the present disclosure as defined by the appended claims.

Claims

1. A valve comprising an 8-way directional valve connected to a plurality of coolant lines to control the direction of movement of coolant moving to each coolant line, wherein the valve is provided as a pair of a first valve and a second valve, The above first valve is connected to the first coolant line among the plurality of coolant lines and controls the direction of movement of coolant moving to each first coolant line, The second valve is connected to the second coolant line among the plurality of coolant lines and controls the direction of movement of coolant moving to each second coolant line. The first valve and the second valve are connected by a plurality of coolant connection lines so that coolant moves between the first valve and the second valve. Cooling water system.

2. In paragraph 1, The above first cooling water line, Including the 1-1 coolant line passing through the battery and the water heater, the 1-2 coolant line passing through the electrical components, and the 1-3 coolant line passing through the chiller, The above second coolant line, A second-1 coolant line passing through the water-cooled condenser and the HVAC heater, a second-2 coolant line passing through the HVAC cooler, and a second-3 coolant line passing through the water-cooled evaporator; The above multiple cooling water connection lines are, A first connecting line and a second connecting line passing through the radiator; including; Cooling water system.

3. In paragraph 1, The first valve is a coolant system for the driving unit side including electrical components and a battery, and the second valve is a coolant system for the vehicle interior side, and the first valve and the second valve are connected to each other to control the coolant to integrate the drive unit side and the vehicle interior air conditioning side with coolant and manage heat. Cooling water system.

4. In paragraph 2, The above valve has a first water pump installed on one side and a second water pump installed on the other side. The first water pump and the second water pump are installed in opposite directions from the side. Cooling water system.

5. In paragraph 4, The above valve includes a valve housing and a valve cylinder that is accommodated in the valve housing and rotates, The above valve housing forms eight coolant inlets and outlets, The above valve cylinder is configured by stacking a first valve cylinder and a second valve cylinder vertically, each forming 16 cooling water holes, and among the 16 cooling water holes, 8 cooling water holes form a first hole set and the other 8 cooling water holes form a second hole set. Cooling water system.

6. In paragraph 5, If the above eight coolant inlets and outlets are numbered 1 to 8 in clockwise order, The first water pump is installed in the third cooling water inlet and outlet, and the second water pump is installed in the seventh cooling water inlet and outlet. Cooling water system.

7. In paragraph 6, In the above first valve, The above 1-1 coolant line connects the 7th coolant inlet and the 8th coolant inlet, The above 1st-2nd coolant line connects the 3rd coolant inlet and the 4th coolant inlet, The above 1-3 coolant lines connect the 5th coolant inlet and the 6th coolant inlet, The first water pump is located on the first-second cooling water line, and the second water pump is located on the first-first cooling water line. Cooling water system.

8. In paragraph 6, In the above second valve, The above 2-1 coolant line connects the 2nd coolant inlet and the 3rd coolant inlet, The above 2-2 coolant line connects the 4th coolant inlet and the 5th coolant inlet, The above 2nd-3rd coolant line connects the 6th coolant inlet and the 7th coolant inlet, The first water pump is located on the second-first cooling water line, and the second water pump is located on the second-third cooling water line. Cooling water system.

9. In paragraph 6, The above first connecting line connects the first coolant inlet / outlet of the first valve and the eighth coolant inlet / outlet of the second valve, The second connecting line connects the second coolant inlet / outlet of the first valve and the first coolant inlet / outlet of the second valve. Cooling water system.

10. In paragraph 5, The cooling water holes of the valve cylinder are arranged in a row along the outer surface of the valve cylinder, and the cooling water holes of the first hole set and the cooling water holes of the second hole set are arranged alternately. Cooling water system.

11. In paragraph 10, If the cooling water holes of the first hole set are referred to as the first to eighth holes (a1 to a8) in order from the clockwise direction, the first valve cylinder forms the first flow path, The above first euro is, A path connecting the first hole (a1) and the eighth hole (a8); A flow path connecting the second hole (a2) and the fifth hole (a5); A flow path connecting the third hole (a3) and the fourth hole (a4); and A flow path connecting the sixth hole (a6) and the seventh hole (a7); including; Cooling water system.

12. In paragraph 10, If the cooling water holes of the second hole set are designated as holes 1 to 8 (b1 to b8) in clockwise order, the second valve cylinder forms a second flow path. The above second euro is, A flow path connecting the first hole (b1) and the fourth hole (b4); A flow path connecting the second hole (b2) and the third hole (b3); A flow path connecting the fifth hole (b5) and the eighth hole (b8); and A flow path connecting the sixth hole (b6) and the seventh hole (b7); including; Cooling water system.

13. In paragraph 2, Among the eight coolant inlets and outlets in the above first valve, Two coolant inlets are connected to the first-first coolant line, two other coolant inlets are connected to the first-second coolant line, and two other coolant inlets are connected to the first-third coolant line. Among the eight coolant inlets and outlets in the second valve above, Two coolant inlets and two coolant inlets are connected to the 2-1 coolant line, two other coolant inlets and two other coolant inlets are connected to the 2-2 coolant line, and two other coolant inlets and two other coolant inlets are connected to the 2-3 coolant line. In the first valve, the remaining one of the eight coolant inlets and outlets and in the second valve, the remaining one of the eight coolant inlets and outlets are connected to the first connecting line, In the first valve, the remaining one of the eight coolant inlets and outlets and in the second valve, the remaining one of the eight coolant inlets and outlets are connected to the second connecting line. Cooling water system.

14. In paragraph 13, Different cooling water circuits are formed depending on the operating mode of the first valve or the second valve. The above operating mode consists of at least 6 or more, Cooling water system.

15. In paragraph 14, Among the above operating modes, the first operating mode is: A cooling water circuit circulating through the 1-1 cooling water line and the 1-3 cooling water line, a cooling water circuit circulating through the 2-1 cooling water line, a cooling water circuit circulating through the 2-2 cooling water line and the 2-3 cooling water line, and a cooling water circuit circulating through the 1-2 cooling water line and the 1st and 2nd connection lines are formed. Cooling water system.

16. In paragraph 14, Among the above operating modes, the second operating mode is A cooling water circuit circulating through the 1-1 cooling water line and the 1-3 cooling water line, a cooling water circuit circulating through the 2-1 cooling water line, a cooling water circuit circulating through the 2-1 cooling water line, a cooling water circuit circulating through the 2-2 cooling water line, and a cooling water circuit circulating through the 2-3 cooling water line and the 1st and 2nd connection lines are formed. Cooling water system.

17. In paragraph 14, Among the above operating modes, the third operating mode is A cooling water circuit circulating through the 1-1 cooling water line, a cooling water circuit circulating through the 1-2 cooling water line, a cooling water circuit circulating through the 2-2 cooling water line and the 2-3 cooling water line, a cooling water circuit circulating through the 2-1 cooling water line, and a cooling water circuit circulating through the 1-3 cooling water line and the 1st and 2nd connection lines are formed. Cooling water system.

18. In paragraph 14, Among the above operating modes, the fourth operating mode is: A cooling water circuit circulating through the 1-1 cooling water line and the 1-3 cooling water line, a cooling water circuit circulating through the 2-1 cooling water line, a cooling water circuit circulating through the 2-2 cooling water line and the 2-3 cooling water line, and a cooling water circuit circulating through the 1-2 cooling water line, the 2-1 cooling water line, and the 1st and 2nd connection lines are formed. Cooling water system.

19. In paragraph 14, Among the above operating modes, the fifth operating mode is: A cooling water circuit circulating through the 1-1 cooling water line, a cooling water circuit circulating through the 1-2 cooling water line and the 1-3 cooling water line, a cooling water circuit circulating through the 2-1 cooling water line, a cooling water circuit circulating through the 2-2 cooling water line, and a cooling water circuit circulating through the 2-3 cooling water line and the 1st and 2nd connection lines are formed. Cooling water system.

20. In paragraph 14, Among the above operating modes, the sixth operating mode is: A cooling water circuit circulating through the first-second cooling water line, a cooling water circuit circulating through the second-first cooling water line, a cooling water circuit circulating through the second-second cooling water line and the second-third cooling water line, and a cooling water circuit circulating through the first-first cooling water line, the first-third cooling water line, and the first and second connection lines are formed. Cooling water system.

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