Cooling Water Control Unit

Abstract

A cooling water control unit is provided for supplying and integrating cooling water to various electrical components provided in an eco-car, and is also provided for a cooling water control unit that can stably cool the high heat generated when the cooling water control unit is operating using the cooling water. [Solution] The cooling water control unit of the present invention includes a housing portion that forms the overall outer shape, a valve unit that is rotatably installed inside the housing portion and is equipped to switch the cooling water transfer direction, a cooling water pump unit connected to the housing portion, a drive motor portion that is equipped to drive the valve unit, a control unit that controls the operation of the valve unit, the cooling water pump unit, and the drive motor portion, and a controller housing that houses the control unit and is formed with a cooling water inlet portion into which cooling water flows in, and in which thermal energy generated from the control unit is heat exchanged by heat transfer with the cooling water that flows in through the cooling water inlet portion, thereby cooling the control unit.

Description

[Technical Field]

[0001] The present invention relates to a coolant control unit, and more particularly to a coolant control unit for efficiently supplying and cooling coolant supplied to various cooling units or heating units and power systems provided in an eco-car. [Background technology]

[0002] Generally, due to environmental concerns surrounding internal combustion engine vehicles, there is a trend toward the widespread use of electric vehicles as eco-friendly cars. However, in the case of conventional internal combustion engine vehicles, the waste heat from the engine can be used to heat the interior, making it convenient to provide separate heating. In recent years, various eco-cars that are more environmentally friendly than internal combustion engine vehicles have appeared. For example, electric vehicles (EVs) are the most promising alternative to solve future automobile pollution and energy problems, and research into them is currently underway. Electrically driven vehicles are broadly divided into fuel battery-powered vehicles, which are powered by electricity generated by chemical reactions, and secondary battery or battery cell-powered vehicles, which obtain power by driving an AC or DC motor using a battery power source. However, they also include vehicles that obtain power by supplying electricity using other methods.

[0003] Such electric vehicles generate a large amount of heat when electricity is supplied to the vehicle's drive unit. Furthermore, when electric vehicles generate heat, resistance also increases, accelerating discharge, reducing charging and discharging efficiency and shortening the vehicle's lifespan. Therefore, a cooling water circulation circuit is provided to properly cool the heat. Furthermore, like conventional internal combustion engine vehicles, electrically driven vehicles are equipped with a refrigerant circulation circuit for cooling and heating the interior space, an air circulation circuit for ventilating the interior air, and the like. As described above, electrically driven automobiles are provided with various valve devices that can distribute, control, and adjust the flow of fluids not only in the battery coolant circulation circuit described above, but also in the air circulation circuit, refrigerant circulation circuit, etc. On the other hand, the electrification of vehicles has created a new need for thermal management not only for the vehicle's interior, but also for electrical components such as the high-voltage battery and motor. In other words, in the case of electrically driven vehicles, the air conditioning needs differ for the interior space, battery, and electrical components, and technology is needed that can save as much energy as possible by addressing these independently and linking them efficiently.

[0004] The cooling system for electrical components mainly uses coolant to cool electrical components, actuators, and HSG (hybrid start and generator). In extreme cold, the coolant bypasses the radiator via a bypass circuit, and waste heat from the power electronics (PE) components is passed through the battery to heat it up. However, components for controlling the flow of coolant in the electrical cooling system of an eco-car must fulfill various purposes, such as heating, cooling, and waste heat recovery, from multiple components.

[0005] A cooling water valve and a cooling water pump provided in a conventional eco-car will be described as an example. As shown in the accompanying FIG. 1, a conventional coolant valve 10 and coolant pumps 20 and 30 are separately mounted on a vehicle at different positions adjacent to existing electrical equipment, and the separated components are connected via hoses extending to a predetermined length. As an example, the controller 40 is independently installed at a separate location to control the operation of the cooling water valve 10 and the cooling water pumps 20, 30, and is connected to the cooling water valve 10 and the cooling water pumps 20, 30, and is also connected to the vehicle 30 via wiring 60.

[0006] The conventional cooling water valve 10 and cooling water pumps 20, 30 do not have a separate cooling circuit using the moving cooling water, and must dissipate heat only using the moving cooling water in the cooling water pumps 20, 30, which limits the development of high-power cooling water pumps. Also, the cooling water valve has the problem of being unable to operate under high temperature conditions and reducing the allowable operating current. Furthermore, wiring 60 is required to connect the cooling water valve 10 and the cooling water pumps 20, 30 to each other, which increases the assembly steps and manufacturing costs and reduces the convenience of installing parts. Summary of the Invention [Problem to be solved by the invention]

[0007] The present invention aims to provide a coolant control unit for supplying and integrating coolant to various electrical components installed in an eco-car, and to provide a coolant control unit that can stably cool the high heat generated when the coolant control unit is operating using the coolant. [Means for solving the problem]

[0008] The coolant control unit of the present invention includes a housing part 100 that forms the overall outer shape, a valve unit 200 that is rotatably installed inside the housing part 100 and is provided to switch the coolant flow direction, a coolant pump unit 300 coupled to the housing part 100, a drive motor part 400 that is provided to drive the valve unit 200, a control unit 500 that controls the operation of the valve unit 200, the coolant pump unit 300, and the drive motor part 400, and a controller housing 600 that houses the control unit 500 and has a coolant inlet part 610 into which the coolant flows, and in which thermal energy generated from the control unit 500 is exchanged by heat transfer with the coolant that flows in through the coolant inlet part 610, thereby cooling the control unit 500.

[0009] The housing part 100 further includes a cooling water reservoir 110 in which cooling water to be supplied to the housing part 100 is stored, and a cooling water outlet part 120 configured to discharge the cooling water transported through the cooling water inlet part 610 or the cooling water reservoir 110. The controller housing 600 is made of a material different from that of the housing part 100. The controller housing 600 is made of a material having high thermal conductivity. The controller housing 600 is formed with a controller receiving portion 602 for receiving the control unit 500, and a heat transfer layer 604 is formed between the control unit 500 and the controller receiving portion 602 so that the thermal energy generated from the control unit 500 can be transferred to the controller receiving portion 602.

[0010] The controller housing 602 further includes a heat transfer guide portion 606 formed to provide directionality when the thermal energy generated from the control unit 500 is transferred along the path extending from the cooling water inlet portion 610. The heat transfer guide portion 606 is formed in a thin plate shape and extends a predetermined length from the direction in which the cooling water inlet portion 610 flows. The heat transfer induction part 606 includes a first heat transfer induction part 606a formed to a predetermined length on the inner bottom surface of the controller accommodating part 602, and a second heat transfer induction part 606b extending from the extended end of the first heat transfer induction part 606a along the inner edge of the controller accommodating part 602. The heat transfer guide portion 606 is formed in either a convex or concave shape in the controller receiving portion 602 .

[0011] The cooling water pump unit 300 includes a first cooling water pump 310 provided to supply cooling water to an electric power system unit provided in the eco-car, and a second cooling water pump 320 provided to supply cooling water to a battery unit provided in the eco-car or electrical equipment connected to the battery. The cooling water inlet 610 includes a first cooling water inlet 612 configured to supply low-temperature cooling water to the first cooling water pump 310 and to perform heat transfer with the thermal energy generated from the control unit 500, and a second cooling water inlet 614 configured to supply low-temperature cooling water to the second cooling water pump 320 and to perform heat transfer with the thermal energy generated from the control unit 500. The cooling water reservoir 110 is formed with a partition wall 113 to separate and store the inner space independently of each other. The controller further includes a housing cover 700 coupled to the controller housing 600 and housing the driving motor unit 400 therein. [Effects of the Invention]

[0012] According to the present invention, the cooling water supplied to the power system electrical equipment or battery electrical equipment installed in an eco-car can be managed in an integrated manner, and stable cooling of the control unit can be achieved by air-cooled heat dissipation through heat exchange between the controller housing and the outside air, and heat exchange using a thermal conduction method between the high-temperature thermal energy generated by the control unit and the cooling water. In addition, by configuring the cooling water control unit, which integrates the pump unit, drive motor unit, valve unit, and control unit, to be easily manufactured, it is possible to improve workability for workers and reduce manufacturing costs. Furthermore, by dissipating the thermal energy generated by the control unit through heat transfer via the movement of the controller housing and the coolant, it is possible to provide a coolant control unit that can operate stably regardless of various temperature changes and changes in the location of use. [Brief explanation of the drawings]

[0013] [Figure 1] FIG. 1 is a diagram showing a cooling water valve and a cooling water pump provided in a conventional eco-car. [Figure 2] FIG. 2 is an exploded perspective view of the cooling water control unit according to the present embodiment. [Figure 3]3A to 3C are assembled perspective views of the cooling water control unit according to the present embodiment, viewed from various angles. [Figure 4] 3A to 3C are assembled perspective views of the cooling water control unit according to the present embodiment, viewed from various angles. [Figure 5] FIG. 5 is a longitudinal sectional view of FIG. [Figure 6] FIG. 2 illustrates a controller housing according to the present embodiment. [Figure 7] FIG. 2 illustrates a controller housing according to the present embodiment. [Figure 8] FIG. 8 is a combined cross-sectional view of FIG. [Figure 9] 4 is a plan view showing a heat transfer guide provided in a controller housing according to an embodiment of the present invention; FIG. [Figure 10] 10A and 10B are diagrams illustrating a modified embodiment of the heat transfer guide part according to the present embodiment; [Figure 11] 10A and 10B are views illustrating another embodiment of a heat transfer guide part according to the present embodiment; [Figure 12] FIG. 4 is an operation state diagram of the cooling water control unit according to the present embodiment. [Figure 13] FIG. 4 is an operation state diagram of the cooling water control unit according to the present embodiment. [Figure 14] FIG. 4 is an operation state diagram of the cooling water control unit according to the present embodiment. [Figure 15] FIG. 4 is an operation state diagram of the cooling water control unit according to the present embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0014] The advantages and features of the present disclosure, as well as methods for achieving them, will become apparent from the following detailed description of the embodiments in conjunction with the accompanying drawings. However, the present disclosure is not limited to the embodiments disclosed below, and may be realized in various different forms. The present embodiments are provided solely to complete the disclosure and to fully convey the scope of the disclosure to those skilled in the art to which the disclosure pertains. The present disclosure is defined only by the scope of the claims. The same reference numerals refer to the same components throughout the specification. When an element is referred to as being "connected to" or "coupled to" another element, this includes being directly connected to or connected to the other element, or having other intervening elements between them. Conversely, when an element is referred to as being "directly connected to" or "directly coupled to" another element, this includes being connected to or connected to the other element without any intervening elements between them. "And / or" includes each and every combination of one or more of the listed items.

[0015] The terms used in this specification are for the purpose of describing the embodiments and are not intended to limit the present disclosure. In this specification, the singular forms "a," "an," and "the" include the plural forms unless the context clearly dictates otherwise. As used in this specification, "comprises" or "comprising" means that a referenced component, step, operation, and / or element does not exclude the presence or addition of one or more other components, steps, operations, and / or elements. Although terms such as "first" and "second" are used to describe various components, it goes without saying that these components are not limited by these terms, and these terms are used to distinguish one component from another.

[0016] Figure 2 is an exploded perspective view of the coolant control unit according to this embodiment, Figures 3 and 4 are assembled perspective views of the coolant control unit according to this embodiment viewed from various angles, Figure 5 is a longitudinal cross-sectional view of Figure 4, Figures 6 and 7 are views showing the controller housing according to this embodiment, and Figure 8 is an assembled cross-sectional view of Figure 7. 2 to 8, the coolant control unit 1 according to this embodiment includes a housing 100, a valve unit 200, a coolant pump unit 300, a driving motor 400, a control unit 500, and a controller housing 600. The coolant control unit 1 further includes a housing cover 700 for covering one side of the controller housing 600. The housing part 100 forms the overall outer shape of the cooling water control unit 1, and the valve unit 200 is rotatably provided inside the housing part 100 and is provided to switch the transfer direction of the cooling water.

[0017] Although a 6-way valve is used as an example of the valve unit 200, a 3-way valve or an 8-way valve may also be used. The valve unit 200 includes a cylinder 202 having a plurality of through holes formed in the circumferential direction so as to change the flow direction of the cooling water and having a rotating shaft that is axially coupled to a drive motor unit 400 (described later), a first seal unit 204 coupled to the outside of the cylinder 202, a second seal unit 206 provided on the upper side of the cylinder 202, and a third seal unit 208 provided on the lower side of the cylinder 202. The coolant pump unit 300 is coupled to the housing part 100 and is provided to supply coolant to electrical components that require it in an eco-friendly car. The driving motor part 400 is provided to drive the valve unit 200, and the control unit 500 is provided to control the operation of the valve unit 200, the cooling water pump unit 300, and the driving motor part 400.

[0018] The controller housing 600 houses the control unit 500 and is formed with a cooling water inlet 610 into which cooling water flows, and is provided to cool the control unit 500 by heat exchange through heat transfer between the thermal energy generated from the control unit 500 and the cooling water flowing in through the cooling water inlet 610. In particular, the controller housing 600 is cooled by the outside air and air-cooled, and can be cooled by heat exchange between low-temperature thermal energy transferred by low-temperature cooling water drawn in through the cooling water inlet 610 and high-temperature thermal energy generated by the operation of the control unit 500, which will be described in more detail later. The housing part 100 further includes a cooling water reservoir 110 for storing the cooling water to be supplied to the housing part 100, and a cooling water outlet part 120 configured to discharge the cooling water transferred through the cooling water inlet part 610 or the cooling water reservoir 110. The housing part 100 has pump units 300 integrally connected to it on the left and right sides of the drawing, and is also integrally connected to the controller housing 600 and cover 700 described below, thereby achieving both a stable supply of cooling water and cooling of the control unit 500 mounted in the controller housing 600.

[0019] The control unit 500 can control the valve unit 200, the cooling water pump unit 300, and the driving motor unit 400 with a single control configuration, and can conveniently perform integrated control. In particular, the valve unit 200, the cooling water pump unit 300, and the drive motor unit 400 can be controlled by the control unit 500 without installing individual controllers therefor, thereby reducing manufacturing costs and improving control stability. The control unit 500 includes, for example, a PCB board on which multiple electronic elements are mounted. The electronic elements generate heat at a predetermined temperature during operation, and when multiple electronic elements generate heat simultaneously, high-temperature heat is generated, so a cooling configuration is essential. In order to cool the control unit 500, primary heat transfer is performed through the controller housing 600, which receives high-temperature thermal energy generated from the control unit 500. This prevents overheating of the control unit 500 through conduction and diffusion of thermal energy generated by the electronic elements, enabling stable operation.

[0020] The control unit 500 can control the operation of the valve unit 200, the coolant pump unit 300, and the drive motor unit 400 in an integrated manner through a single configuration, thereby improving the efficiency of the control and supply of coolant and simultaneously improving fuel efficiency and operational stability by stably supplying coolant to various electrical components installed in the eco-car. In addition, when it is necessary to heat up the battery installed in an eco-car, the battery module can be controlled to supply coolant that has been heated by heat exchange with the high-temperature thermal energy generated by the control unit 500, and raise the temperature to a predetermined level. The controller housing 600 is made of a different material from that of the housing part 100, and for example, a material with high thermal conductivity is used to quickly conduct heat generated from the control unit 500. For example, the controller housing 600 is made of aluminum, but other materials with high thermal conductivity may be used.

[0021] In addition, the controller housing 600 can dissipate heat by air cooling with the surrounding air, and can be cooled by air cooling by exchanging conducted heat with the air, so the lower the air temperature, the better the heat dissipation performance. As shown in FIG. 6, the controller housing 600 has a controller receiving portion 602 for receiving the control unit 500, and a heat transfer layer 604 is formed between the control unit 500 and the controller receiving portion 602 so that the thermal energy generated from the control unit 500 can be transferred to the controller receiving portion 602. The heat transfer layer 604 may be, for example, a thermal conductive paste, which is applied to the inside of the controller receiving portion 602 with a predetermined thickness to maintain close contact with the control unit 500. For example, the heat transfer layer 604 may be formed in a sheet shape, in which case a single or multiple thin heat transfer sheets are laminated and maintained in close contact with the control unit 500. The heat transfer layer 604 is in close contact with the bottom surface of the control unit 500, opposite to the top surface on which electronic elements are mounted.

[0022] As shown in FIGS. 7 to 11, the controller receiving portion 602 corresponds to a groove formed at a predetermined depth, and the controller unit 500 is assembled in a state where it is inserted into the controller receiving portion 602. For rapid heat conduction and stable heat dissipation to the control unit 500, a heat transfer guide portion 606 is formed to provide directionality when the thermal energy generated from the control unit 500 is transferred along the path extending from the cooling water inlet portion 610. That is, since the heat transfer induction part 606 is disposed at a position opposite to the cooling water inlet part 610, high-temperature thermal energy is concentrated on the heat transfer induction part 606 that is in close contact with the control unit 500, and moves along the path of the heat transfer induction part 606.

[0023] In addition, the low-temperature cooling water flowing into the cooling water inlet 610 transfers heat to the thermal energy concentrated in the heat transfer induction part 606, thereby quickly cooling the control unit 500. Heat transfer by contact also occurs in the remaining areas excluding the heat transfer induction part 606, and more heat is concentrated and transferred to the heat transfer induction part 606. The heat transfer guide portion 606 is formed in a thin plate shape and extends a predetermined length from the direction in which the coolant inlet portion 610 flows in. The heat transfer guide portion 606 preferentially receives thermal energy generated from the control unit 500 and exchanges heat with low-temperature coolant flowing through the coolant inlet portion 610, thereby enabling rapid cooling and preventing malfunction of multiple electronic elements that generate heat at high temperatures, thereby enabling stable operation of the control unit 500. The heat transfer guide 606 may be variously changed into other shapes other than the shape shown in the drawings, and is not limited to the shape shown in the drawings. In addition, the heat transfer guide 606 is not limited to the illustrated arrangement, and may be branched off again at the end of the controller receiving portion 602 to prevent the heat-generating electronic elements from overheating.

[0024] As shown in FIG. 10, the heat transfer induction part 606 includes a first heat transfer induction part 606a formed on the inner bottom surface of the controller receiving part 602 to a predetermined length, and a second heat transfer induction part 606b extending from the extended end of the first heat transfer induction part 606a along the inner edge of the controller receiving part 602. The first heat transfer induction portion 606a is preferably formed at a position closest to the cooling water inlet portion 610, but may be changed to the position shown in the figure or another position depending on the layout of the controller accommodating portion 602. The second heat transfer induction part 606b guides the thermal energy transferred through the first heat transfer induction part 606a along the inner edge of the controller receiving part 602 and then diffuses it, preventing it from concentrating at the location where multiple electronic components are arranged. This minimizes the environment in which the thermal energy cannot move and concentrates at the location where multiple electronic components are concentrated, causing it to rise to a high temperature, thereby enabling stable heat conduction.

[0025] The second heat transfer guide portion 606b extends along the inner edge of the controller receiving portion 602, but may extend to a position other than the position shown in the drawing depending on the layout. The heat transfer guide portion 606 is formed in either a convex or concave shape in the controller receiving portion 602, and is not limited to a specific shape and may be variously modified. As shown in FIG. 11, the heat transfer induction part 606 according to this embodiment has the same configuration as the first heat transfer induction part 606a extending a predetermined length from the inner bottom surface of the controller receiving part 602, and is provided with a third heat transfer induction part 606c extending a predetermined length from the first heat transfer induction part 606a toward the inside of the controller receiving part 602. For example, the third heat transfer induction part 606c may be formed in a plate shape having a predetermined thickness and may be coupled to the inside of the aluminum controller housing 600 while being inserted therein. The third heat transfer induction part 606c conducts the heat transferred from the first heat transfer induction part 606a to one side of the controller housing 600, thereby more smoothly exchanging heat with the low-temperature coolant moving along the coolant inlet part 610, thereby cooling the control unit 500.

[0026] In this case, the thermal energy generated from the control unit 500 can be dissipated by heat conduction through the heat transfer induction part 606, heat conduction through the controller housing 600, and air cooling outside the controller housing 600, thereby enabling rapid heat dissipation from the control unit 500. The cooling water pump unit 300 includes a first cooling water pump 310 provided to supply cooling water to an electric power system unit provided in the eco-car, and a second cooling water pump 320 provided to supply cooling water to a battery unit provided in the eco-car or electrical equipment connected to the battery. For example, the first coolant pump 310 is provided to supply coolant to power electrical components provided in an eco-car. For example, the first coolant pump 310 operates to pressurize and supply coolant at a predetermined flow rate toward a motor control device provided in the eco-car, thereby cooling the motor control device. Although the electrical equipment supplied with the first cooling water pump 310 has been described as being limited to a motor control device, it may also be supplied to other electrical power equipment.

[0027] The second cooling water pump 320 is provided to pressurize the cooling water required for cooling the battery electrical components provided in the eco-car at a predetermined flow rate to achieve cooling. The first cooling water pump 310 and the second cooling water pump 320 each include a motor housing (not shown), a stator (not shown), a rotor (not shown), an impeller housing (not shown), and an impeller (not shown). The first cooling water pump 310 is coupled to the left side of the housing part 100 when viewed from the front, and the second cooling water pump 320 is coupled to the right side. The cooling water outlet portion 120 includes a first cooling water outlet portion 122 connected to the first cooling water pump 310 and a second cooling water outlet portion 124 connected to the second cooling water pump 320. The first cooling water outlet 122 is provided to supply cooling water to the power system unit, and the second cooling water outlet 124 is provided to supply cooling water to the battery unit or electrical equipment connected thereto. The first and second cooling water outlets 122 and 124 may be connected to a connecting member such as a hose via a clamp so that the cooling water can flow.

[0028] The cooling water reservoir 110 extends to a predetermined depth, and the internal space is partitioned via a partition wall 113, allowing cooling waters of different temperatures to be stored and flowed without being mixed. For example, the cooling water reservoir 110 is not a separate, independent structure from the housing portion 100 but is formed as an integrated unit, which simplifies the components, facilitates assembly, and reduces manufacturing costs. The cooling water reservoir 110 extends to a predetermined diameter and length and includes a first cooling water reservoir 112 for supplying cooling water to the above-mentioned first cooling water pump 310, and a second cooling water reservoir 114 for supplying cooling water to the second cooling water pump 320. A state in which a predetermined amount of cooling water flows into the first and second cooling water reservoirs 112, 114 is maintained, thereby enabling stable operation of the pump unit 300.

[0029] The cooling water inlet 610 includes a first cooling water inlet 612 configured to supply low-temperature cooling water to the first cooling water pump 310 and to perform heat transfer with the thermal energy generated from the control unit 500, and a second cooling water inlet 614 configured to supply low-temperature cooling water to the second cooling water pump 320 and to perform heat transfer with the thermal energy generated from the control unit 500. The first and second cooling water inlet portions 612, 614 are made of aluminum material, and when low-temperature cooling water flows in, low-temperature thermal energy is conducted throughout the controller housing 600, and heat is exchanged with high-temperature thermal energy transferred from the control unit 500. The controller further includes a housing cover 700 coupled to the controller housing 600 and housing the driving motor part 400 therein, and one side of the control unit 500 accommodated in the controller housing 600 is airtightly coupled by the cover 700.

[0030] The housing 100 further includes a coolant outlet 120 configured to discharge the coolant transferred through the coolant inlet 610 or the coolant reservoir 110. The first coolant outlet 122 is provided to discharge the coolant supplied to the first coolant pump 310, and the second coolant outlet 124 is provided to discharge the coolant supplied to the second coolant pump 320. As shown in FIG. 12, the cooling water control unit can operate in a first mode (M1) to supply heated cooling water to the power system units and the battery unit. In the first mode (M1), the coolant flows in through the first and second coolant reservoirs 112 and 114, is pumped by the first and second coolant pumps 310 and 320, and is supplied to the power unit and the battery unit via the first and second coolant outlets 122 and 124 (see FIG. 3), respectively, to raise the temperature of the coolant. The control unit 500 controls the drive motor unit 400 to rotate the valve unit 200 to a position corresponding to the first mode (M1).

[0031] As shown in FIG. 13, the cooling water control unit can operate in a second mode (M2) to supply heated cooling water to the power system units and low-temperature cooling water to the battery units. In the second mode (M2), the cooling water that has flowed in through the first cooling water inlet 612 is pumped by the first cooling water pump 310 and discharged to the first cooling water outlet 122. In addition, the cooling water that flows in through the second cooling water inlet 614 is pumped by the second cooling water pump 320, discharged to the second cooling water outlet 124, and then supplied to the battery unit, thereby enabling cooling. As shown in Figure 14, the cooling water control unit can operate in a third mode (M3) to supply cooled cooling water to the power system units and also to supply low-temperature cooling water to the battery units. As shown in Figure 15, before the initial operation of the cooling water control unit, the fourth mode (M4) is shown, which operates to remove all remaining air in the housing part 100 and allow cooling water to flow in.

[0032] The present invention has been described above, but a person having ordinary knowledge in the relevant technical field can modify and change the present invention in various ways by adding, changing, deleting or adding components, etc., within the scope of the concept of the present invention as set forth in the claims, and this will also be included in the scope of the present invention. [Industrial Applicability]

[0033] The present invention can be used in a coolant control unit that can stably supply coolant to various electrical components provided in an eco-car to cool them. [Explanation of symbols]

[0034] 1 Cooling water control unit 100 Housing 110 Coolant reservoir 112 first cooling water reservoir 113 Bulkhead 114 Second Coolant Reservoir 120 Cooling water outlet 122 1st cooling water outlet 124 Second cooling water outlet 200 valve unit 202 cylinder 204 First seal part 206 Second seal part 208 Seal part 300 Cooling water pump unit 310 First cooling water pump 320 Second Cooling Water Pump 400 Drive motor section 500 control unit 600 Controller housing 602 Controller housing 604 Heat Transfer Layer 606 Heat transfer induction part 606a First heat transfer induction part 606b Second heat transfer induction section 606c Third heat transfer induction section 610 Cooling water inlet 612 First cooling water inlet 614 Second cooling water inlet 700 housing cover

Claims

1. a housing portion that forms the overall outer shape; a valve unit rotatably provided inside the housing portion and configured to switch the direction of cooling water transfer; a cooling water pump unit coupled to the housing portion; a drive motor unit provided for driving the valve unit; a control unit for controlling the operation of the valve unit, the cooling water pump unit, and the drive motor unit; a controller housing in which the control unit is housed, in which a cooling water inlet into which the cooling water flows is formed, and in which thermal energy generated from the control unit is heat exchanged with the cooling water flowing in through the cooling water inlet by heat transfer, thereby cooling the control unit; the controller housing is formed with a controller receiving portion for receiving the control unit; the controller receiving portion further includes a heat transfer guide portion formed to provide directionality when thermal energy generated from the control unit is transferred along a path extending from the cooling water inlet portion, The cooling water control unit is characterized in that the heat transfer induction part is disposed at a position opposite to the cooling water inlet part.

2. The housing portion includes a cooling water reservoir for storing cooling water to be supplied to the housing portion; 2. The cooling water control unit according to claim 1, further comprising a cooling water outlet configured to discharge the cooling water transferred through the cooling water inlet or the cooling water reservoir.

3. 2. The cooling water control unit according to claim 1, wherein the controller housing is made of a material different from that of the housing portion.

4. 2. The coolant control unit according to claim 1, wherein the controller housing is made of aluminum.

5. 2. The coolant control unit according to claim 1, wherein the controller housing has a heat transfer layer formed between the control unit and the controller receiving portion so that thermal energy generated from the control unit can be transferred to the controller receiving portion.

6. 2. The coolant control unit according to claim 1, wherein the heat transfer guide portion is formed in a thin plate shape and extends a predetermined length from the direction in which the coolant inlet portion flows.

7. The heat transfer guide portion includes a first heat transfer guide portion formed on an inner bottom surface of the controller receiving portion with a predetermined length; 2. The coolant control unit according to claim 1, further comprising: a second heat transfer guide portion extending from an extended end of the first heat transfer guide portion along an inner edge of the controller receiving portion.

8. 2. The coolant control unit according to claim 1, wherein the heat transfer guide portion is formed in either a convex or concave shape in the controller receiving portion.

9. The cooling water pump unit includes a first cooling water pump provided to supply cooling water to an electric power system unit provided in the eco-car; 2. The cooling water control unit according to claim 1, further comprising: a second cooling water pump provided to supply cooling water to a battery unit provided in the eco-car or to electrical equipment connected to the battery.

10. the cooling water inlet portion is configured to supply low-temperature cooling water to the first cooling water pump and to perform heat transfer with thermal energy generated from the control unit; 10. The coolant control unit according to claim 9, further comprising: a second coolant inlet configured to supply low-temperature coolant to the second coolant pump and to transfer heat between the second coolant inlet and the heat energy generated by the control unit.

11. 3. The coolant control unit according to claim 2, wherein the coolant reservoir is formed with a partition wall for dividing and storing the coolant into separate internal spaces.

12. 2. The coolant control unit according to claim 1, further comprising a housing cover coupled to the controller housing and housing the driving motor therein.

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