Water supply module integrated with liquid storage tank

Abstract

The present invention relates to a water supply module integrated with a liquid storage tank, the module including: a liquid storage tank, in which a hollow portion is formed to accommodate cooling water therein, and the liquid storage tank includes a first mounting portion arranged on one side of the liquid storage tank and a second mounting portion arranged on the other side of the liquid storage tank; a first component, which is mounted on the first mounting portion; and a second component, which is mounted on the second mounting portion, wherein the first component and the second component pass through the liquid storage tank so as to be connected, so that the cooling water paths are directly connected to each other without bypassing the liquid storage tank, and thus the cooling circuit of the vehicle cooling system can be simplified and formed as an integrated system.

Description

Technical Field

[0001] The present disclosure relates to a water supply module integrated with a liquid storage tank, and more particularly, to a water supply module integrated with a liquid storage tank in which components of a plurality of water supply modules are integrated and connected. Background Art

[0002] Recently, due to energy efficiency and environmental pollution issues, there is a demand for the development of environmentally friendly vehicles that can basically replace internal combustion engine vehicles. Environmentally friendly vehicles are mainly divided into electric vehicles or hydrogen vehicles that use batteries or fuel cells as energy sources, and hybrid vehicles that use engines and batteries as drive. Such environmentally friendly vehicles also include an engine cooling system that manages cooling / heating of the engine, etc., and a separate electronic cooling system that manages heat of power electronics (PE) including electric motors.

[0003] The electronic cooling system mainly uses cooling water to cool power electronic devices, actuators, hybrid start and generator (HSG), etc., and has a structure that uses waste heat from power electronic devices (PE) in cold seasons to allow cooling water to bypass the radiator through a bypass loop and pass through the battery at the same time to increase the temperature of the battery.

[0004] The electronic cooling system of an environmentally friendly vehicle should meet the various purposes of multiple water supply module components, such as heating, cooling, waste heat recovery, etc., but the problem is that due to the limitation of the layout space in the vehicle, it is more difficult to arrange each component, design the hose route, and connect them. When installing each component on the vehicle, a lot of man-hours are required to install and connect each component and hose separately, and due to the complex route, the resistance to the cooling water side is high. As a result, a high load is applied to the water pump.

[0005] [Related technical literature]

[0006] Korean Patent Publication No. 1765578 (August 1, 2017) Summary of the Invention

[0007] Technical issues

[0008] An object of the present disclosure is to provide a water supply module integrated with a liquid storage tank, which is connected to multiple cooling water lines, integrates components of several water supply modules, and connects the components to each other through the liquid storage tank.

[0009] Technical Solution

[0010] In one general aspect, a water supply module integrated with a liquid storage tank may include: a liquid storage tank, in which a hollow portion is formed to accommodate cooling water in the liquid storage tank, and the liquid storage tank includes a first mounting portion arranged on one side of the liquid storage tank and a second mounting portion arranged on the other side of the liquid storage tank; a first component, the first component being mounted on the first mounting portion; and a second component, the second component being mounted on the second mounting portion, wherein the first component and the second component can pass through the liquid storage tank so as to be connected.

[0011] The reservoir tank may be provided with a through hole passing therethrough in a direction from the first mounting portion to the second mounting portion, and the cooling water may flow between the first component and the second component through the through hole.

[0012] The water supply module integrated with the liquid storage tank may further include: a pipe connecting the first component and the second component, wherein the pipe may connect the first component and the second component by passing through the through hole.

[0013] A partition wall may be provided inside the liquid storage tank, the partition wall dividing the internal space of the liquid storage tank into a first chamber and a second chamber.

[0014] The through hole may be formed through the partition wall.

[0015] The thickness of the partition wall may be smaller than the width of the cross section of the through hole.

[0016] The first cooling water among the cooling water that circulates the first cooling circuit can flow in the first chamber, and the second cooling water among the cooling water that circulates the second cooling circuit can flow in the second chamber. The liquid storage tank may also include a plurality of cooling water inlets and outlets through which the cooling water enters and leaves, and the plurality of cooling water inlets and outlets may include: a first chamber cooling water inlet, which introduces the first cooling water into the first chamber; a first chamber cooling water outlet, which discharges the first cooling water to the outside of the first chamber; a second chamber cooling water inlet, which introduces the second cooling water into the second chamber; and a second chamber cooling water outlet, which discharges the second cooling water to the outside of the second chamber.

[0017] A valve assembly may be provided inside the first component, the valve assembly having an internal path through which the cooling water flows, the internal path of the valve assembly may include a bifurcated portion that bifurcates in multiple directions, and the internal path may include a first bifurcated path to a fifth bifurcated path that bifurcates from the bifurcated portion in each direction.

[0018] The second component and the first branched path can be connected to each other through the through hole, the second branched path and the third branched path can form the first cooling circuit, and the fourth branched path and the fifth branched path can form the second branched path, and the first chamber cooling water outlet can be connected to either the second branched path or the third branched path, and the second chamber cooling water outlet can be connected to either the fourth branched path or the fifth branched path.

[0019] The valve assembly may include a first water pump mounting portion and a second water pump mounting portion, the first water pump mounting portion being configured to communicate with either the second forked path or the third forked path, the second water pump mounting portion being configured to communicate with either the fourth forked path or the fifth forked path, the first water pump mounting portion may be installed with a first water pump that pressurizes and transmits the first cooling water flowing through the second forked path and the third forked path, and the second water pump mounting portion may be installed with a second water pump that pressurizes and transmits the second cooling water flowing through the fourth forked path and the fifth forked path.

[0020] The second component may be a cooler that adjusts the temperature of the cooling water, and the cooler may include a pair of pipes through which the cooling water enters and exits, and any one of the pair of pipes may pass through the through hole and be connected to the valve assembly.

[0021] The cooler may include a cooler component coupling structure in which components are coupled, and an expansion valve that decompresses the cooling water may be coupled to the cooler component coupling structure and provided between the cooler and the liquid storage tank.

[0022] The first mounting portion may be provided with a washer coupling structure, a washer may be coupled to the washer coupling structure and provided between the reservoir tank and the first component, and the washer may be a surface washer, and the first component may be in surface contact with the surface washer.

[0023] The liquid storage tank may include: a shell having a hollow portion formed therein; a partition wall arranged inside the shell to divide the hollow portion of the shell into a plurality of chambers; and a step member arranged inside the liquid storage tank to control the flow of the cooling water flowing inside the liquid storage tank and to guide the flow of the cooling water so that bubbles contained in the cooling water are removed by the step member.

[0024] The step member may include: an inner wall step member, one end of the inner wall step member is fixed to the inner wall of the shell, and the other end extends to the partition wall; and a partition wall step member, one end of the partition wall step member is fixed to the partition wall, and the other end extends to the inner wall of the shell, and the cooling water flowing inside the shell through the inner wall step member and the partition wall step member can flow in a Z shape along the inner wall step member and the partition wall step member.

[0025] The inner wall step member and the partition wall step member may be formed as a plurality of inner wall step members and a plurality of partition wall step members, and the plurality of inner wall step members and the plurality of partition wall step members may be alternately arranged in a vertical direction of the liquid storage tank.

[0026] The multiple chambers may include a first chamber and a second chamber separated by the partition wall, and the shell includes: a first chamber cooling water inlet, which introduces the first cooling water into the first chamber; a first chamber cooling water outlet, which discharges the first cooling water from the inside of the first chamber to the outside; a second chamber cooling water inlet, which introduces the second cooling water into the second chamber; and a second chamber cooling water outlet, which discharges the second cooling water from the second chamber to the outside, and the first chamber cooling water outlet may be arranged below the first chamber cooling water inlet, and the second chamber cooling water outlet may be arranged below the second chamber cooling water inlet.

[0027] The water supply module integrated with the liquid storage tank may further include: a cooling water inlet, which is arranged above the shell and through which the cooling water is introduced from the outside; and a distribution member, which is arranged at the upper end of the partition wall to distribute the cooling water introduced from the outside into the first chamber and the second chamber.

[0028] The inner wall step member may include: a first inner wall step member, which is arranged on the first chamber, and one end of the first inner wall step member is fixed to the inner wall of the shell, and the other end extends to the partition wall; and a second inner wall step member, which is arranged on the second chamber, and one end of the second inner wall step member is fixed to the inner wall of the shell, and the other end extends to the partition wall, and the partition wall step member may include: a first partition wall step member, which is arranged on the first chamber, and one end of the first partition wall step member is fixed to the partition wall, and the other end extends to the inner wall of the shell; and a second partition wall step member, which is arranged on the second chamber, and one end of the second partition wall step member is fixed to the partition wall, and the other end extends to the inner wall of the shell.

[0029] The shell may include a first shell and a second shell connected to each other to form a hollow portion in the shell, the step member may be formed as a plurality of step members, and some of the plurality of step members may be arranged in the first shell, and other step members may be arranged in the second shell.

[0030] Beneficial effects

[0031] In the water supply module integrated with the reservoir of the present disclosure, since the first component and the second component pass through the reservoir to be connected, cooling water paths are directly connected to each other without bypassing the reservoir, so the cooling circuit of the vehicle cooling system can be simplified and formed into an integrated form.

[0032] Furthermore, since the water supply module integrated with the liquid reservoir of the present disclosure is provided with a partition wall dividing the internal space of the liquid reservoir into two chambers, two independent cooling circuits can be constructed with only one liquid reservoir, thereby reducing the overall package size of the vehicle cooling system and lowering costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a schematic configuration diagram of an electric vehicle cooling circuit according to an example of the present disclosure.

[0034] Figure 2 It is a three-dimensional diagram of the water supply module integrated with the liquid storage tank.

[0035] Figure 3 This is an exploded perspective view of the water supply module integrated with the liquid storage tank.

[0036] Figure 4 It is a rear perspective view of the fluid storage tank.

[0037] Figure 5It is a cross-sectional view of the interior of the fluid storage tank.

[0038] Figure 6 is a diagram showing the gasket coupled to the reservoir.

[0039] Figure 7 is a diagram showing that the valve assembly and the cooler are in communication with each other.

[0040] Figure 8 is a perspective view of the valve assembly.

[0041] Figure 9 A diagram used to describe the surface contact portion between a gasket and a valve component.

[0042] Figure 10 It is shown again Figure 4 Picture.

[0043] Figure 11 is a cross-sectional view of a liquid storage tank according to a first embodiment of the present disclosure.

[0044] Figure 12 is a cross-sectional view of a liquid storage tank according to a second embodiment of the present disclosure.

[0045] Figure 13 is a cross-sectional view of a liquid storage tank according to a third embodiment of the present disclosure.

[0046] Figure 14 and Figure 15 is a cross-sectional view of a liquid storage tank according to a fourth embodiment of the present disclosure.

[0047] Figure 16 and Figure 17 is a cross-sectional view of a liquid storage tank according to a fifth embodiment of the present disclosure. DETAILED DESCRIPTION

[0048] Hereinafter, the present disclosure will be described in detail with reference to the accompanying drawings.

[0049] Figure 1It is a schematic structural diagram of an electric vehicle cooling circuit according to an example of the present disclosure. Electric vehicles require a cooling circuit C1 for cooling power electronic devices (electronic units) and a cooling circuit C2 for cooling batteries, respectively. In this cooling circuit according to the present disclosure, the cooling circuit is integrated by a water supply module 10 integrated with a liquid storage tank, and the water supply module integrated with the liquid storage tank is installed with a cooler, a valve, a pump P, an expansion valve TXV, etc. centered on the liquid storage tank. The liquid storage tank of the present disclosure provides a mounting structure and a position where each component can be installed. At the same time, in the present disclosure, the cooling circuit for cooling power electronic devices is referred to as a first cooling circuit c1, and the cooling circuit for cooling batteries is referred to as a second cooling circuit c2. However, the first cooling circuit c1 and the second cooling circuit c2 are not limited thereto, but may refer to various types of cooling circuits.

[0050] Figure 2 This is a three-dimensional diagram of the water supply module integrated with the liquid storage tank. Figure 3 This is an exploded perspective view of the water supply module integrated with the liquid storage tank. Figure 2 and Figure 3 According to the present disclosure, the water supply module 10 integrated with the liquid storage tank may include a liquid storage tank 100 and a valve assembly 200, wherein the valve assembly 200 includes a component mounted on the liquid storage tank 100 and having an internal path formed in the valve assembly for cooling water to flow through, wherein the component may include a cooler 300 for controlling the temperature of the cooling water, a water pump 400 for pressurizing and transmitting the cooling water, and an expansion valve 500 for decompressing the cooling water. Since each component is a well-known technology, a detailed description of the general structure or function will be omitted. At the same time, in the following description, for a clearer description, based on Figure 2 The direction display is used to define the top D1, bottom D2, front D3, back D4, left D5 and right D6.

[0051] Figure 4 This is a rear perspective view of the fluid storage tank. Figure 4 Cooling water is contained in a liquid reservoir 100. The liquid reservoir 100 includes a plurality of liquid reservoir cooling water inlets and outlets 110, through which cooling water enters and exits, and at least one mounting portion 120, on which components are mounted. The liquid reservoir 100 can be mounted to respond to changes in the volume of the cooling water. More specifically, since the cooling water circulating through the first cooling circuit C1 and the second cooling circuit C2 can have a volume that changes according to changes in temperature and pressure, when the cooling water has a volume greater than a reference value during its circulation, excess cooling water can be accommodated in the liquid reservoir 100. When the cooling water volume is less than the reference value, cooling water sufficient to supplement the insufficient cooling water can be supplied to the liquid reservoir 100 from the outside. To this end, a plug C can be provided on the upper side of the liquid reservoir 100 to supply cooling water from the outside.

[0052] like Figures 2 to 4 As shown, according to the present disclosure, the first mounting portion 121 can be mounted on one side of the liquid storage tank 100, the second mounting portion 122 can be provided on the other side, the first component 200 can be mounted on the first mounting portion 121, and the second component (for example, the cooler 300 described below) can be mounted on the second mounting portion. In this case, the first component 200 and the second component 300 can pass through the liquid storage tank 100 to be connected. More specifically, the liquid storage tank 100 is provided with a through hole 130 that passes through in the direction from the first mounting portion 121 to the second mounting portion 122, and cooling water can flow between the first component 200 and the second component 300 through the through hole 130. Here, a pipe P connecting the first component 200 and the second component 300 is also provided, so that the pipe P passes through the through hole to connect the first component 200 and the second component 300 to each other. The through hole 130 can be designed in various forms according to the shape of the pipe inserted into the through hole 130.

[0053] As described above, according to the present disclosure, when constructing the cooling water path, in order to connect each component to each other, each component passes through the reservoir tank to be directly connected to each other without bypassing the reservoir tank, and thus the cooling circuit of the vehicle cooling system can be simplified and formed as an integration.

[0054] Figure 5 is a cross-sectional view of the interior of the liquid storage tank, wherein Figure 5 (a) shows a cross section from the inside to the front, and Figure 5 (b) shows a cross section from the inside to the rear. A partition wall 140 that divides the space inside the liquid storage tank 100 into the first chamber S1 and the second chamber S2 may be provided inside the liquid storage tank 100. In this case, the cooling water circulating in the first cooling circuit (hereinafter referred to as "first cooling water A") among the cooling water may flow in the first chamber S1, and the cooling water circulating through the second cooling circuit (hereinafter referred to as "second cooling water B") among the cooling water may flow in the second chamber S2.

[0055] A partition wall 140 extends upward from the bottom of the liquid storage tank 100 to divide the internal space of the liquid storage tank 100 into a first chamber S1 and a second chamber S2. The partition wall separates the first chamber S1 and the second chamber S2 from each other, thereby configuring independent cooling circuits. This prevents mixing of the first cooling water A in the first chamber S1 and the second cooling water B in the second chamber S2. Due to this partition wall structure, compared to the case where a liquid storage tank is required in each cooling circuit to configure the battery cooling circuit and the power electronics cooling circuit, the present disclosure enables the configuration of both cooling circuits with a single liquid storage tank. This reduces the overall package size of the vehicle cooling system and reduces costs.

[0056] Here, according to the present disclosure, the through hole 130 may be formed to pass through the partition wall 140. That is, as Figure 5 As shown, the through hole 130 may be formed to pass through the partition wall 140 and be integrally formed with the partition wall 140, and the width of the cross section of the through hole 130 may be greater than the thickness of the partition wall 140. To this end, the partition wall 140 is formed to have a constant thickness except for a portion through which the through hole 130 passes, and may have a form in which the partition wall 140 is divided into one side and the other side at a starting point through which the through hole 130 passes so that one side is recessed in the left side and the other side is recessed in the right side, and then the one side and the other side of the partition wall 140 are combined again at an end point of the portion through which the through hole 130 passes.

[0057] In this way, when the through hole is configured to pass through the partition wall, the first chamber and the second chamber can be designed symmetrically, so that the capacity of cooling water contained in the first chamber and the second chamber can be made the same, and when the cooling water flows between the first chamber and the second chamber, the cooling water flow resistance on either side can be prevented from being deflected to a large extent.

[0058] Meanwhile, in the present disclosure, although a single through-hole is described as an example, it goes without saying that a plurality of through-holes connecting the first component and the second component may be formed for various modifications of the cooling circuit, and one or more other through-holes connecting the third component and the fourth component may be further formed.

[0059] In addition, if Figure 4 and Figure 5 As shown, the liquid storage tank 100 of the present disclosure may have a plurality of cooling water inlets and outlets 110. In this case, the plurality of cooling water inlets and outlets 110 may include: a first chamber cooling water inlet 111, which is in communication with the first chamber S1 and through which the first cooling water A is introduced into the first chamber S1; a first chamber cooling water outlet 112, which is in communication with the first chamber S1 to discharge the first cooling water A from the interior of the first chamber S1 to the outside; a second chamber cooling water inlet 113, which is in communication with the second chamber S2 to allow the second cooling water B to be introduced into the second chamber S2; and a second chamber cooling water outlet 114, which is in communication with the second chamber S2 to allow the second cooling water B to be discharged from the second chamber S2 to the outside.

[0060] In this way, since one liquid storage tank is divided into two chambers by the partition wall, and a cooling water inlet and outlet are independently provided in each chamber, two independent cooling circuits can be constructed using one liquid storage tank.

[0061] In addition, if Figure 4and Figure 5 As shown, a through hole 130 passing through the liquid storage tank 100 is formed in the liquid storage tank 100, and one component and another component can be connected to each other through the through hole 130. More specifically, a component mounted on one of the plurality of mounting portions 120 of the liquid storage tank 100 and a component mounted on another of the plurality of mounting portions 120 can be connected to each other through a pipe P passing through the through hole 130. Here, the term "connected" means that each component is connected or coupled so that cooling water can flow between the corresponding components. To this end, a cooling water inlet and outlet are provided in the components so that the cooling water inlet and outlet and the pipe P can be connected to each other.

[0062] According to the present disclosure, since the through hole 130 is provided in the liquid storage tank 100, and the tube P passes through the through hole 130 to form a structure in which different components can be directly connected, additional hoses or pipes for connecting between components can be reduced, and not only the convenience of installation can be increased, but also the airtight structure for maintaining the airtightness of the cooling water can be simplified so as to reduce the airtight parts of the connection parts between the corresponding components.

[0063] Figure 6 The gasket is shown coupled to the reservoir, where Figure 6 (a) shows the washer coupling structure 125 of the mounting portion 120, and Figure 6 (b) shows that the gasket 600 is coupled to the mounting portion 120. As shown in the figure, at least one mounting portion 121 among the plurality of mounting portions 120 of the liquid storage tank 100 may be provided with a gasket coupling structure 125, and the gasket 600 may be coupled to the gasket coupling structure 125. Therefore, the gasket 600 may be provided between the liquid storage tank 100 and the component mounted on the mounting portion 121 provided with the gasket coupling structure 125. The gasket 600 is intended to improve the airtightness between the liquid storage tank 100 and the component, and can more reliably prevent the cooling water from leaking to the outside at the connection portion where the liquid storage tank 100 and the component are connected.

[0064] Hereinafter, the present disclosure will be described in more detail through a water supply module integrated with a liquid storage tank according to a specific embodiment of the present disclosure.

[0065] In the water supply module integrated with the liquid storage tank 100 according to an embodiment of the present disclosure, the valve assembly 200 may be installed on one side of the liquid storage tank 100 , the cooler 300 may be installed on the other side of the liquid storage tank, and the water pump 400 may be coupled to the valve assembly 200 .

[0066] More specifically, refer to Figure 3 and Figure 4, the mounting portion 120 of the liquid storage tank 100 may include a first mounting portion 121 provided on one side of the liquid storage tank 100 and a second mounting portion 122 provided on the other side of the liquid storage tank 100, and the valve assembly 200 may be mounted on the first mounting portion 121, and the cooler 300 may be mounted on the second mounting portion. At least one water pump mounting portion 220 may be provided in the valve assembly 200, and the water pump 400 may be coupled to the water pump mounting portion 220. For example, as shown in the figure, the first mounting portion 121 may be formed on the front lower portion of the liquid storage tank 100, the second mounting portion 122 may be formed on the rear upper portion of the liquid storage tank 100, and the first mounting portion 121 and the second mounting portion 122 may be formed to be recessed into the liquid storage tank 100 to accommodate the valve assembly 200 and the cooler 300, respectively.

[0067] In this case, as described above, the reservoir tank is provided with the through hole 130 passing in the direction from the first mounting portion 121 to the second mounting portion 122 , and the pipe P passes through the through hole 130 to allow the valve assembly 200 and the cooler 300 to communicate with each other through the pipe P. Figure 7 The valve assembly and the cooler are shown to be in communication with each other. As shown in the figure, the valve assembly 200 and the cooler 300 can be directly connected through the pipe P, and by allowing the pipe P to pass through the through-hole 130, the liquid storage tank 100 can be disposed between the valve assembly 200 and the cooler 300. In this way, since the through-hole is formed in the liquid storage tank and the cooler and the valve assembly are directly connected by passing the pipe through the through-hole, space utilization can be maximized and the cooling circuit can be formed as an integrated circuit.

[0068] Meanwhile, a bifurcated portion 210 bifurcated in multiple directions may be formed in an internal path of the valve assembly 200 . Figure 8 is a stereoscopic view of a valve assembly. As shown in the figure, the valve assembly 200 can be a five-way valve, and therefore the internal path can be forked in five directions around the bifurcation 210. In this case, the first bifurcated path V1 can be connected to the pipe P, which is one of the internal paths that branch off in each direction from the bifurcation 210. That is, one end of the pipe P is connected to one end of the first bifurcated path V1, so the first bifurcated path V1 and the pipe P can be connected to each other. As a result, cooling water F can flow between the valve assembly 200 and the cooler 300 connected to the other end of the pipe P. In this case, the end of each bifurcated path can correspond to the cooling water inlet and outlet of the valve assembly 200 itself, or the end of each bifurcated path can be connected to the cooling water inlet and outlet of the valve assembly 200.

[0069] Here, the second branched path V2 and the third branched path V3 branched in each direction from the branching portion 210 among the internal paths can form a first cooling circuit C1, and the fourth branched path V4 and the fifth branched path V5 branched in each direction from the branching portion 210 among the internal paths can form a second cooling circuit C2. In addition, the first chamber cooling water outlet 112 can be connected to any one of the second branched path V2 and the third branched path V3, and the second chamber cooling water outlet 114 can be connected to one of the fourth branched path V4 and the fifth branched path V5, so that the cooling water between the liquid storage tank 100 and the valve assembly 200 can flow relative to each other. For example, referring to Figure 1 、 Figure 2 and Figure 8 The first cooling water A introduced into the first chamber S1 through the first chamber cooling water inlet 111 is discharged to the first chamber cooling water outlet 112 and introduced into the third branched path V3 communicating with the first chamber cooling water outlet 112. The first cooling water A introduced into the third branched path V3 can be circulated to be discharged into the second branched path V2 to cool the battery and introduced back into the first chamber S1 of the reservoir tank 100 to form the first cooling circuit C1. Similarly, the second cooling water B introduced into the second chamber S2 through the second chamber cooling water inlet 113 is discharged to the second chamber cooling water outlet 114 and introduced into the fourth branched path V4 communicating with the second chamber cooling water outlet 114. The second cooling water B introduced into the fourth branched path V4 can be circulated to be discharged into the fifth branched path V5 to cool the power electronic devices (electronic units) and introduced back into the second chamber of the reservoir tank to form the second cooling circuit.

[0070] In addition, if Figure 7 and Figure 8 As shown, the water pump mounting portion 220 of the valve assembly 200 includes a first water pump mounting portion 221 communicating with either the second forked path V2 or the third forked path V3, and a second water pump mounting portion 222 communicating with either the fourth forked path V4 or the fifth forked path V5, wherein the first water pump mounting portion 221 may be mounted with a first water pump 410 that pressurizes and transmits the first cooling water A flowing through the second forked path V2 and the third forked path V3, and the second water pump mounting portion 222 may be mounted with a second water pump 420 that pressurizes and transmits the second cooling water (B) flowing through the fourth forked path V4 and the fifth forked path V5. For example, Figure 2 As shown, the first water pump 410 may be installed on the left side of the valve assembly 200, and the second water pump 420 may be installed on the right side of the valve assembly 200. Figure 8, the first water pump 410 can be installed near the second branched path V2 to pressurize and transmit the first cooling water A flowing through the second branched path V2 and the third branched path V3, and the second water pump 420 can be installed near the fifth branched path V5 to pressurize and transmit the second cooling water B flowing through the fourth branched path V4 and the fifth branched path V5. In this case, the water pump 400 can be an electric water pump (EWP). As described above, since the water pump is installed in each of the first cooling circuit and the second cooling circuit, the cooling water circulation of each cooling circuit can be performed independently, and according to the present disclosure, the cooling water of the two cooling circuits can be fully circulated using only one water supply module integrated with the liquid storage tank.

[0071] At the same time, as mentioned above Figure 6 As described above, in the water supply module 10 integrated with the liquid storage tank, the first mounting portion 121 may be provided with a gasket coupling structure 125, and the gasket 600 may be coupled to the gasket coupling structure 125 of the first mounting portion 121 to be disposed between the liquid storage tank 100 and the valve assembly 200. In this case, the valve assembly 200 may include a surface contact portion 250 that is in surface contact with the gasket 600, and the surface contact portion 250 and the gasket 600 may be in close contact to improve airtightness. Figure 9 This figure illustrates the surface contact portion between a gasket and a valve assembly. As shown, gasket 600 can be positioned on the front surface of first mounting portion 121, and surface contact portion 250 can be positioned on the rear surface of valve assembly 200, thereby allowing gasket 600 and valve assembly 200 to come into surface contact. In this case, an O-ring can be formed in gasket 600 by passing through the connection portion where pipe P connects to valve assembly 200, and the connection portion where first and second chamber cooling water outlets 112 and 114 connect to valve assembly 200.

[0072] In addition, in the water supply module 10 integrated with the liquid storage tank of the present disclosure, the cooler 300 may be provided with one or more cooler component coupling structures 320, and components may be mounted on the one or more cooler component coupling structures 320. In this case, the expansion valve 500 is mounted on the cooler component coupling structure 320, but the expansion valve 500 may be coupled to the cooler component coupling structure 320 so that the expansion valve 500 is disposed between the cooler 300 and the liquid storage tank 100. That is, as Figure 3 As shown, the cooler component coupling structure 320 can be provided on the upper side of the front surface of the cooler 300, and the expansion valve 500 can be coupled to the cooler component coupling structure 320. In this case, the expansion valve 500 can be provided between the cooler 300 and the liquid storage tank 100. This can greatly reduce the overall packaging size of the water supply module integrated with the liquid storage tank and further maximize space utilization.

[0073] Hereinafter, the liquid storage tank 100 according to various embodiments will be described in more detail.

[0074] The electronic cooling system may construct a cooling circuit including a heat exchanger and a water pump to cool the circulating cooling water, and since the volume of the cooling water changes according to the temperature, a reservoir tank capable of adjusting the volume may be additionally provided in the cooling circuit. In this case, bubbles may be generated due to various factors while the cooling water circulates through the conduit, and the generated bubbles lead to a problem of reduced cooling efficiency. Korean Patent Publication No. 10-1765589 discloses a technology for improving efficiency by removing generated bubbles with the aid of a separate collection space. However, even when the cooling water is injected into or flows into the reservoir tank and the passage of the water pump, the passage of the curved surface of the conduit, and is heated by the engine heat described in the related art, a large amount of bubbles may be generated, and the bubbles generated in the reservoir tank may lead to a problem that the cooling efficiency of the cooling system may be reduced.

[0075] The liquid storage tank 100 of the present disclosure can solve this problem by adopting the following solution.

[0076] Figure 10 Shown again Figure 4 As shown in the figure, in the liquid storage tank 100 of the present disclosure, the first tank body 100a and the second tank body 100b are connected to each other in the front-to-back direction to form an internal hollow portion. The first chamber cooling water inlet 111, the first chamber cooling water outlet 112, the second chamber cooling water inlet 113, and the second chamber cooling water outlet 114 can be provided on one of the first tank body 100a and the second tank body 100b. Figure 10 It is shown that the first chamber cooling water inlet 111, the first chamber cooling water outlet 112 and the second chamber cooling water outlet 114 are arranged on the first tank body 100a arranged on the front side, and the second chamber cooling water inlet 113 is connected to the second tank body 100b arranged on the rear side, but the setting structure can be modified in various forms considering compatibility.

[0077] Figure 11 relates to a liquid storage tank according to a first embodiment of the present disclosure, and Figure 11 A cross-sectional view of a fluid reservoir is shown. In this case, Figure 11 1 is a cross-sectional view from the rear to the front, showing the first tank body 100a of the liquid storage tank 100. Since the left and right sides are opposite in the drawing, the description will be made by defining the direction in which the first chamber cooling water outlet 112 is provided as one side and the direction in which the second chamber cooling water outlet 114 is provided as the other side.

[0078] refer to Figure 11The liquid storage tank 100 of the present disclosure may include a housing 1110 having a hollow portion formed therein and a partition wall 140 disposed within the housing 1110. In this case, the partition wall 140 may have a shape in which its lower end is coupled to the inner bottom surface of the housing 1110 and extends upward to separate the hollow portion within the housing 1110 into a first chamber S1 and a second chamber S2. Furthermore, the upper end of the partition wall 140 is disposed below the inner upper surface of the housing 1110, so that a space communicating with the first chamber S1 and the second chamber S2 is formed above the partition wall 140. In this case, the liquid storage tank 100 of the present disclosure may further include a dispensing member 1130 coupled to the upper end of the partition wall 140 and extending to both sides. Furthermore, a plug C is disposed above the dispensing member 1130, and when a user opens the plug C and pours cooling water F, the cooling water F is distributed to the first chamber S1 and the second chamber S2 through the guidance of the dispensing member 1130.

[0079] The liquid storage tank 100 of the present disclosure may further include inner wall step members 1141 and 1142 and partition wall step members 1151 and 1152. In this case, the inner wall step members 1141 and 1142 may include a first inner wall step member 1141 and a second inner wall step member 1142, and the partition wall step members 1151 and 1152 may further include a first partition wall step member 1151 and a second partition wall step member 1152. Here, the first inner wall step member 1141 and the second inner wall step member 1142 may have one end fixed to the inner wall of the housing 1110 and the other end extending toward the inner center of the housing 1110 where the partition wall 140 is provided. In addition, the first partition wall step member 1151 and the second partition wall step member 1152 may have one end fixed to the outer surface of the partition wall 140 and the other end extending toward the inner wall of the housing 1110. In addition, a gap can be formed between the other ends of the first inner wall step member 1141 and the second inner wall step member 1142 and the partition wall 140 to allow cooling water to flow between them, and a gap can also be formed between the other ends of the first partition wall step member 1151 and the second partition wall step member 1152 and the shell 1110.

[0080] A first inner wall step member 1141 and a first partition wall step member 1151 may be provided in the first chamber S1, and a second inner wall step member 1142 and a second partition wall step member 1152 may be provided in the second chamber S2. Each of the first chamber S1 and the second chamber S2 may be connected to the first chamber cooling water outlet 112 and the second chamber cooling water outlet 114, through which the first cooling water and the second cooling water are discharged. Here, the first inner wall step member 1141 and the first partition wall step member 1151 may be alternately arranged up and down in the first chamber S1, and the first cooling water may flow in a zigzag pattern along the first inner wall step member 1141 and the first partition wall step member 1151. The second inner wall step member 1142 and the second partition wall step member 1152 may be alternately arranged up and down in the second chamber S2, and the second cooling water may flow in a zigzag pattern along the second inner wall step member 1142 and the second partition wall step member 1152.

[0081] One side and the other side of the first inner wall step member 1141 and the second inner wall step member 1142 can be arranged around the partition wall 140, and the other ends can face each other around the partition wall. In addition, the first partition wall step member 1151 and the second partition wall step member 1152 can be arranged at corresponding heights and extend in two directions.

[0082] The through hole 130 may be provided through the partition wall 140, and the through hole 130 may be formed by bifurcating the partition wall 140 from the upper and lower center parts to both sides and then reconnecting the partition wall 140. In this case, the through hole 130 may be designed in various forms according to the shape of the tube to be inserted.

[0083] Figure 12 relates to a liquid storage tank according to a second embodiment of the present disclosure, and Figure 12 A cross-sectional view of a fluid reservoir is shown. In this case, Figure 12 1 is a cross-sectional view from the rear to the front, showing the first tank body 100a of the liquid storage tank 100. Since the left and right sides are opposite in the drawing, the description will be made by defining the direction in which the first chamber cooling water outlet 112 is provided as one side and the direction in which the second chamber cooling water outlet 114 is provided as the other side.

[0084] Reference Figure 12The dispensing member 1130 coupled to the upper end of the partition wall 140 includes a first dispensing member 1131 extending to one side of the partition wall 140 and a second dispensing member 1132 extending to the other side of the partition wall 140. The first dispensing member 1131 or the second dispensing member 1132 may have an upwardly or downwardly inclined shape, wherein the inclined shape may be a shape in which the other end is biased upward and downward (such as inclined or curved) than one end.

[0085] The first inner wall step member 1141, the second inner wall step member 1142, the first partition wall step member 1151, and the second partition wall step member 1152 may also have an inclined shape with one end and the other end deflected upward and downward. In this case, the first inner wall step member 1141, the second inner wall step member 1142, the first partition wall step member 1151, and the second partition wall step member 1152 may be made into a plurality of pieces up and down and arranged to be spaced apart from each other.

[0086] In this case, as in the illustrated first inner wall step member 1141, a plurality of first inner wall step members 1141 may be inclined to the same side, and as in the illustrated second inner wall step member 1142, some of the second inner wall step members 1142 may be inclined in different directions. Furthermore, as in the illustrated first partition wall step member 1151, one end and the other end may be arranged at the same height, or as in the illustrated second partition wall step member 1152, only some of the plurality of second partition wall step members 1152 may be inclined. The shapes of the first inner wall step member 1141, the second inner wall step member 1142, the first partition wall step member 1151, and the second partition wall step member 1152 are not limited to those illustrated and may be modified to any of the various forms described above.

[0087] Figure 13 relates to a liquid storage tank according to a third embodiment of the present disclosure, and Figure 13 A cross-sectional view of a fluid reservoir is shown. In this case, Figure 13 1 is a cross-sectional view from the rear to the front, showing the first tank body 100a of the liquid storage tank 100. Since the left and right sides are opposite in the drawing, the description will be made by defining the direction in which the first chamber cooling water outlet 112 is provided as one side and the direction in which the second chamber cooling water outlet 114 is provided as the other side.

[0088] refer to Figure 13, the first distribution member 1131 and the second distribution member 1132 can be formed at different heights and can be arranged to intersect each other. In this case, the first inner wall step member 1141 and the second inner wall step member 1142 can be set at different heights, or the first partition wall step member 1151 and the second partition wall step member 1152 are at different heights. Here, when a plurality of first inner wall step members 1141, the second inner wall step member 1142, the first partition wall step member 1151 or the second partition wall step member 1152 are formed in plurality, some of the plurality of first inner wall step members 1141 and the second inner wall step members 1142 are arranged to intersect each other, or some of the plurality of first partition wall step members 1151 and the second partition wall step members 1152 can be arranged to intersect each other.

[0089] The other end of the first inner wall step member 1141 may be positioned above one surface of the first partition wall step member 1151. Thus, a channel through which cooling water can flow can be formed by partially facing each other between one surface of the first inner wall step member 1141 and one surface of the first partition wall step member 1151. Here, some of the plurality of first inner wall step members 1141 and the first partition wall step members 1151 may have different upper and lower gaps to control the cooling water flow. For example, a pair of first partition wall step members 1151 may be positioned above and below one first inner wall step member 1141, and the vertical spacing between the other first partition wall step member 1151 and the first inner wall step member 1141 may be closer than the vertical spacing between one of the first partition wall step members 1151 and the first inner wall step member 1141.

[0090] Figure 14 and Figure 15 relates to a liquid storage tank according to a fourth embodiment of the present disclosure, and Figure 14 and Figure 15 The cross-sectional views of the first tank body and the second tank body are shown respectively. In this case, Figure 14 1 is a cross-sectional view from the rear to the front, showing the first tank body 100a of the liquid storage tank 100. Since the left and right sides are opposite in the drawing, the description will be made by defining the direction in which the first chamber cooling water outlet 112 is provided as one side and the direction in which the second chamber cooling water outlet 114 is provided as the other side.

[0091] Reference Figure 14 and Figure 15The liquid storage tank 100 of the present disclosure can be formed by coupling a first tank body 100a and a second tank body 100b to each other, and the first tank body 100a and the second tank body 100b can include a first shell 1110a and a second shell 1110b, respectively. The first shell 1110a and the second shell 1110b can be coupled to form a hollow portion therein. In this case, the plug C, the first chamber cooling water inlet 111, the second chamber cooling water inlet 113, the first chamber cooling water outlet 112, and the second chamber cooling water outlet 114 can be provided on one of the first shell 1110a or the second shell 1110b.

[0092] The first liquid storage tank 100a may include a first partition wall 140a provided at the center portion of both sides of the first shell 1110a, and the second liquid storage tank 100b may include a second partition wall 140b provided at the center portion of both sides of the second shell 1110b. The above-mentioned center portion is not limited to the center of both sides, and it can be formed in various forms as long as it can separate the first chamber S1 and the second chamber S2. For example, the center portion can be eccentric to the left or right from the center. In this case, when the first shell 1110a and the second shell 1110b are connected and formed into a partition wall, the first partition wall 140a of the first liquid storage tank 100a and the second partition wall 140b of the second liquid storage tank 100b can be provided to face each other, and the partition wall can be provided in one of the first liquid storage tank 100a and the second liquid storage tank 100b and protrude forward or backward.

[0093] Each of the first liquid storage tank 100a and the second liquid storage tank 100b may include partition wall step members 1150a and 1150b. In this case, the partition wall step member 1150a of the first liquid storage tank 100a may extend to both sides around the first partition wall 140a, and the partition wall step member 1150b of the second liquid storage tank 100b may also extend to both sides around the second partition wall 140b. In addition, the two ends of the partition wall step member 1150a of the first liquid storage tank 100a are spaced apart from the inner surfaces of both sides of the first shell 1110a, and a gap is formed therebetween, and the two ends of the partition wall step member 1150b of the second liquid storage tank 100b may be spaced apart from the inner surfaces of both sides of the second shell 1110b, so as to form a gap therebetween. Here, in the liquid storage tank 100 of the present disclosure, the partition wall step member 1150a of the first liquid storage tank 100a and the partition wall step member 1150b of the second liquid storage tank 100b can be set at different heights, and the partition wall step member 1150a of the first liquid storage tank 100a and the partition wall step member 1150b of the second liquid storage tank 100b can be configured in plurality.

[0094] Figure 16 and Figure 17relates to a liquid storage tank according to a fifth embodiment of the present disclosure, and Figure 16 and Figure 17 The cross-sectional views of the first tank body and the second tank body are shown respectively. In this case, Figure 16 1 is a cross-sectional view from the rear to the front, showing the first tank body 100a of the liquid storage tank 100. Since the left and right sides are opposite in the drawing, the description will be made by defining the direction in which the first chamber cooling water outlet 112 is provided as one side and the direction in which the second chamber cooling water outlet 114 is provided as the other side.

[0095] Reference Figure 16 and Figure 17 , the first liquid storage tank 100a may include a first partition wall 140a provided at the center portion of both sides of the first housing 1110a, and the second liquid storage tank 100b may include a second partition wall 140b provided at the center portion of both sides of the second housing 1110b. In addition, the first liquid storage tank 100a and the second liquid storage tank 100b may include at least one of an inner wall step member 1140 and a partition wall step member 1150. As shown in the figure, the first liquid storage tank 100a includes the partition wall step member 1150, and the second liquid storage tank 100b includes the inner wall step member 1140, but the present disclosure is not limited to this structure.

[0096] More specifically, the first liquid storage tank 100a includes: a first housing 1110a; a first partition wall 140a, which extends upward with its lower end fixed to the inner lower surface of the first housing 1110a; and a partition wall step member 1150, which is disposed on the first partition wall 140a and extends in two directions. Furthermore, the second liquid storage tank 100b may include: a second housing 1110b; a second partition wall 140b, which has a lower end fixed to the inner lower surface of the second housing 1110b, extends upward and faces the first partition wall 140a; and an inner wall step member 1140, which has one end fixed to the inner surface of both sides of the second housing 1110b and extends to the second partition wall 140b. Here, the inner wall step member 1140 and the partition wall step member 1150 may be formed in plurality and spaced apart from each other in the vertical direction. In addition, the dispensing member 1130 may be provided in one of the first and second liquid storage tanks 100a and 100b.

[0097] As described above, in the liquid storage tank of the present disclosure, when cooling water is injected into the liquid storage tank through the inner wall step member and the partition wall step member, or when the first cooling water and the second cooling water for cooling the battery and the power electronic device flow, the generation of bubbles can be prevented, and therefore, there is an advantage that a cooling circuit with improved cooling efficiency can be formed.

[0098] Furthermore, the liquid storage tank of the present disclosure is connected to a plurality of cooling circuits through a partition wall structure capable of preventing the generation of bubbles, so that space can be used more efficiently and the user can perform integrated control, thereby saving maintenance time and costs.

[0099] Although the present disclosure has been described above with reference to exemplary embodiments, the present disclosure is not limited thereto but may be modified and altered in various ways by those skilled in the art without departing from the spirit and scope of the present disclosure as claimed in the appended claims.

[0100] [Description of Reference Signs]

[0101] 10: Water supply module integrated with liquid storage tank

[0102] 100: Fluid storage tank

[0103] 110: Cooling water inlet and outlet

[0104] 111: Cooling water inlet of the first chamber

[0105] 112: Cooling water outlet of the first chamber

[0106] 113: Second chamber cooling water inlet

[0107] 114: Second chamber cooling water outlet

[0108] 120: Installation Department

[0109] 121: First installation part

[0110] 122: Second installation part

[0111] 130: Through hole

[0112] 140: Partition wall

[0113] 100a: First tank

[0114] 100b: Second tank

[0115] 1101: Cooling water inlet and outlet

[0116] 1110: Shell

[0117] 1110a: First shell

[0118] 1110b: Second shell

[0119] 1130: Assignment component

[0120] 1131: First distribution component

[0121] 1132: Second distribution component

[0122] 1140: Inner wall step components

[0123] 1141: First inner wall step component

[0124] 1142: Second inner wall step component

[0125] 1150: Partition wall step components

[0126] 1151: First partition wall step component

[0127] 1152: Second partition wall step component

[0128] 200: Valve assembly

[0129] 210: Bifurcation

[0130] 220: Water pump installation department

[0131] 221: First water pump installation

[0132] 222: Second water pump installation

[0133] 250: Surface contact part

[0134] 251: O-ring

[0135] 300: Cooler

[0136] 320: Cooler component connection structure

[0137] 400: Water pump

[0138] 410: First water pump

[0139] 420: Second water pump

[0140] 500 expansion valve

[0141] 600: Washer

[0142] A, B: first cooling water, second cooling water

[0143] C1: First cooling circuit

[0144] C2: Second cooling circuit

[0145] F: Cooling water

[0146] S1: First chamber

[0147] S2: Second chamber

[0148] V1, V2, V3, V4, V5: first fork path, second fork path, third fork path, fourth fork path, fifth fork path

Claims

1. A water supply module integrated with a liquid storage tank, the water supply module integrated with the liquid storage tank comprising: a liquid storage tank having a hollow portion formed therein to accommodate cooling water therein, and comprising a first mounting portion provided on one side of the liquid storage tank and a second mounting portion provided on the other side of the liquid storage tank; a first component, the first component being mounted on the first mounting portion; as well as a second component, the second component being mounted on the second mounting portion, wherein the first component and the second component pass through the fluid storage tank so as to be directly connected, The liquid storage tank is provided with a through hole passing through in a direction from the first mounting portion to the second mounting portion, and The cooling water flows between the first component and the second component through the through hole, The water supply module integrated with the liquid storage tank also includes: a tube connecting the first component and the second component, The tube passes through the through hole to connect the first component and the second component that is arranged on the opposite side of the first component with respect to the liquid storage tank.

2. A water supply module integrated with a liquid storage tank, the water supply module integrated with the liquid storage tank comprising: a liquid storage tank having a hollow portion formed therein to accommodate cooling water therein, and comprising a first mounting portion provided on one side of the liquid storage tank and a second mounting portion provided on the other side of the liquid storage tank; a first component, the first component being mounted on the first mounting portion; as well as a second component, the second component being mounted on the second mounting portion, wherein the first component and the second component pass through the fluid storage tank so as to be connected, The liquid storage tank is provided with a through hole passing through in a direction from the first mounting portion to the second mounting portion, and The cooling water flows between the first component and the second component through the through hole, A partition wall is provided inside the liquid storage tank, and the partition wall divides the internal space of the liquid storage tank into a first chamber and a second chamber. First cooling water circulating a first cooling circuit among the cooling water flows in the first chamber, and second cooling water circulating a second cooling circuit among the cooling water flows in the second chamber. The liquid storage tank further includes a plurality of cooling water inlets and outlets through which the cooling water enters and leaves, and The plurality of cooling water inlets and outlets include: a first chamber cooling water inlet, the first chamber cooling water inlet introducing the first cooling water into the first chamber; a first chamber cooling water outlet, the first chamber cooling water outlet discharging the first cooling water to the outside of the first chamber; a second chamber cooling water inlet, the second chamber cooling water inlet introducing the second cooling water into the second chamber; and a second chamber cooling water outlet, wherein the second chamber cooling water outlet discharges the second cooling water to the outside of the second chamber, A valve assembly is provided inside the first component, and the valve assembly has an internal path through which the cooling water flows. The internal path of the valve assembly includes a bifurcated portion that bifurcates in multiple directions, and The inner path includes a first diverging path, a second diverging path, a third diverging path, a fourth diverging path, and a fifth diverging path diverging from the diverging portion in each direction.

3. The water supply module integrated with the liquid storage tank according to claim 2, wherein: The through hole is formed through the partition wall.

4. The water supply module integrated with the liquid storage tank according to claim 3, wherein: The thickness of the partition wall is smaller than the width of the cross section of the through hole.

5. The water supply module integrated with the liquid storage tank according to claim 2, wherein: The second component and the first branched path communicate with each other through the through hole, the second branched path and the third branched path form the first cooling circuit, and the fourth branched path and the fifth branched path form the second branched path, and The first chamber cooling water outlet communicates with either the second branched path or the third branched path, and the second chamber cooling water outlet communicates with either the fourth branched path or the fifth branched path.

6. The water supply module integrated with the liquid storage tank according to claim 5, wherein: The valve assembly includes a first water pump mounting portion and a second water pump mounting portion, wherein the first water pump mounting portion is configured to communicate with either the second forked path or the third forked path, and the second water pump mounting portion is configured to communicate with either the fourth forked path or the fifth forked path. The first water pump installation portion is installed with a first water pump that pressurizes and transmits the first cooling water flowing through the second branch path and the third branch path, and A second water pump is installed on the second water pump installation portion, and the second water pump pressurizes and transmits the second cooling water flowing through the fourth branch path and the fifth branch path.

7. The water supply module integrated with the liquid storage tank according to claim 2, wherein: The second component is a cooler that adjusts the temperature of the cooling water, and The cooler includes a pair of pipes through which the cooling water enters and exits, and any one of the pair of pipes passes through the through-hole and is connected to the valve assembly.

8. The water supply module integrated with the liquid storage tank according to claim 7, wherein: The cooler includes a cooler component coupling structure in which components are coupled, and An expansion valve for reducing the pressure of the cooling water is coupled to the cooler component coupling structure, and the expansion valve is provided between the cooler and the liquid storage tank.

9. The water supply module integrated with the liquid storage tank according to claim 1 or 2, wherein: The first mounting portion is provided with a washer connection structure, A gasket is coupled to the gasket coupling structure and is disposed between the fluid reservoir and the first component, and The gasket is a surface gasket, and the first component is in surface contact with the surface gasket.

10. The water supply module integrated with the liquid storage tank according to claim 1 or 2, wherein: The liquid storage tank comprises: a housing having a hollow portion formed therein; a partition wall provided inside the housing to partition the hollow portion of the housing into a plurality of chambers; and a step member disposed inside the liquid storage tank to control the flow of the cooling water flowing inside the liquid storage tank, and The flow of the cooling water is guided so that air bubbles contained in the cooling water are removed by the step member.

11. The water supply module integrated with the liquid storage tank according to claim 10, wherein: The step component comprises: an inner wall step member having one end fixed to the inner wall of the housing and the other end extending to the partition wall; and a partition wall step member having one end fixed to the partition wall and the other end extending to the inner wall of the housing, and The cooling water flowing inside the housing through the inner wall step member and the partition wall step member flows in a zigzag pattern along the inner wall step member and the partition wall step member.

12. The water supply module integrated with the liquid storage tank according to claim 11, wherein: The inner wall step member and the partition wall step member are formed as a plurality of inner wall step members and a plurality of partition wall step members, and the plurality of inner wall step members and the plurality of partition wall step members are alternately arranged in a vertical direction of the liquid storage tank.

13. The water supply module integrated with the liquid storage tank according to claim 11, wherein: The plurality of chambers include a first chamber and a second chamber separated by the partition wall, and The housing comprises: a first chamber cooling water inlet, the first chamber cooling water inlet introducing first cooling water into the first chamber; a first chamber cooling water outlet, the first chamber cooling water outlet discharging the first cooling water from the interior of the first chamber to the outside; a second chamber cooling water inlet that introduces second cooling water into the second chamber; and a second chamber cooling water outlet that discharges the second cooling water from the second chamber to the outside, and The first chamber cooling water outlet is disposed below the first chamber cooling water inlet, and the second chamber cooling water outlet is disposed below the second chamber cooling water inlet.

14. The water supply module integrated with the liquid storage tank according to claim 11, further comprising: a cooling water inlet, the cooling water inlet being provided above the housing and through which the cooling water is introduced from the outside; as well as A distributing member is provided at an upper end of the partition wall to distribute the cooling water introduced from the outside into the first chamber and the second chamber.

15. The water supply module integrated with the liquid storage tank according to claim 14, wherein: The inner wall step component comprises: a first inner wall step member provided on the first chamber, one end of the first inner wall step member being fixed to the inner wall of the housing and the other end of the first inner wall step member extending to the partition wall; and a second inner wall step member, the second inner wall step member being provided on the second chamber, and having one end fixed to the inner wall of the housing and the other end extending to the partition wall, and The partition wall step member comprises: a first partition wall step member provided on the first chamber and having one end fixed to the partition wall and the other end extending to the inner wall of the housing; and A second partition wall step member is provided on the second chamber and has one end fixed to the partition wall and the other end extending to the inner wall of the housing.

16. The water supply module integrated with the liquid storage tank according to claim 10, wherein: The housing includes a first housing and a second housing coupled to each other to form a hollow portion in the housing, The step member is formed into a plurality of step members, and Some of the plurality of step members are provided in the first housing, and the other step members are provided in the second housing.

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