Water-cooled cooling device

Abstract

A water-cooled cooling device is disclosed. The present invention comprises: a heat dissipation panel in which a horizontal conduit and a vertical conduit are formed to be connected to each other; a shielding bolt structure installed at open end portions to left and right side surfaces of the heat dissipation panel of the horizontal conduit; and a hose nipple structure installed at an open end portion to the lower surface of the heat dissipation panel of the vertical conduit. According to the present invention, it is possible to provide a water-cooled cooling device having excellent watertightness, assemblability, and maintenance. In addition, according to the present invention, it is possible to effectively solve a product reliability problem caused by heat generation of a SiC element through high cooling efficiency secured through excellent watertightness.

Description

Water-cooled cooling device

[0001] The present invention relates to a water-cooled cooling device, and more particularly, to a water-cooled cooling device that not only has excellent watertightness, assembly, and maintainability, but also effectively solves product reliability problems caused by heat generation of power devices such as SiC (Silicon Carbide) devices or IGBT devices through high cooling efficiency secured through excellent watertightness.

[0002] IGBT (insulated gate bipolar transistor) devices and SiC devices, which are power devices used in various industrial fields such as automobiles, aviation, and home appliances, have recently received great attention as core components of electric vehicles and hybrid electric vehicles.

[0003] Such SiC devices generate significant heat during the switching operation, which degrades the performance of the SiC devices and causes various problems in SiC module packages.

[0004] Therefore, to ensure the reliability of SiC devices and module packages, it is essential to solve the heat generation problem of SiC.

[0005] Accordingly, the purpose of the present invention is to provide a water-cooled cooling device that not only has excellent watertightness, assembly and maintainability, but also effectively solves product reliability problems caused by heat generation of SiC elements through high cooling efficiency secured through excellent watertightness.

[0006] The problems to be solved by the present invention are not limited to the problems mentioned above, and include other technical problems that can be clearly understood by a person having ordinary skill in the technical field to which the present invention belongs from the description below.

[0007] In order to achieve the above object, a water-cooling cooling device according to the present invention comprises: a heat dissipation panel formed so that horizontal conduits and vertical conduits are interconnected therein; a shielding bolt structure installed at an open end of the horizontal conduits toward the left and right sides of the heat dissipation panel; and a hose nipple structure installed at an open end of the vertical conduits toward the lower side of the heat dissipation panel.

[0008] Preferably, the shielding bolt structure is characterized by including an elastic ring installed on an annular protrusion inside the open end of the horizontal conduit.

[0009] In addition, the shielding bolt structure is characterized in that it further includes a shielding plate that pressurizes the elastic ring and shields the open end of the horizontal conduit.

[0010] In addition, the shielding bolt structure is characterized in that it further includes a bolt portion that presses the shielding plate and is coupled to the inside of the open end.

[0011] In addition, the hose nipple structure is characterized by including a first annular ring installed on an annular protrusion inside an open end of the vertical conduit.

[0012] In addition, the hose nipple structure is characterized in that it further includes a second annular ring installed on the outside of the open end along the periphery of the open end of the vertical conduit.

[0013] In addition, the hose nipple structure is characterized in that it further includes a hose nipple body portion that pressurizes the first annular ring and the second annular ring, and one end of which is inserted and installed into the open end of the vertical conduit.

[0014] According to the present invention, it is possible to provide a water-cooled cooling device having excellent watertightness, assembly and maintainability.

[0015] In addition, according to the present invention, product reliability problems caused by heat generation of SiC elements or IGBT elements can be effectively solved through high cooling efficiency secured through excellent watertightness.

[0016] The effects of the present invention are not limited to the effects mentioned, and include other effects that can be clearly understood by a person having ordinary skill in the art to which the present invention pertains from the following description.

[0017] Figure 1 is a drawing showing the basic structure of a water-cooled cooling device according to one embodiment of the present invention;

[0018] FIG. 2 is a drawing showing an improved structure of a water-cooled cooling device according to one embodiment of the present invention;

[0019] Fig. 3 is a drawing showing the installation structure of the shielding bolt structure in Fig. 2.

[0020] Fig. 4 is a drawing showing the installation structure of the hose nipple structure in Fig. 2, and

[0021] Fig. 5 is a cross-sectional view showing the installation state of the hose nipple structure in Fig. 2.

[0022] The present invention will be described in more detail below with reference to the drawings. It should be noted that, wherever possible, identical components are represented by identical reference numerals throughout the drawings. Furthermore, detailed descriptions of well-known functions and configurations that may unnecessarily obscure the gist of the present invention will be omitted.

[0023] Fig. 1 is a drawing showing the basic structure of a water-cooling cooling device according to one embodiment of the present invention. As shown in Fig. 1, the manufacturer forms one or more horizontal conduits (110) penetrating the left and right sides of a heat dissipation panel (100) made of a plate-shaped metal material with high thermal conductivity, such as aluminum or copper, by drilling, etc., and then forms a pair of vertical conduits (130) connected from the lower surface of the heat dissipation panel (100) to the horizontal conduits (110) by drilling, etc., and thereby forms a cooling water transport conduit formed through the mutual connection of the vertical conduits (130) and the horizontal conduits (110) inside the heat dissipation panel (100).

[0024] Meanwhile, one end of a pair of vertical pipes (130) may be an inlet, which is an inlet through which cooling water is supplied, and one end of the other vertical pipe (130) may be an outlet, which is an outlet through which cooling water is discharged.

[0025] Meanwhile, in order to form a circulation structure inside the heat dissipation panel (100) of the cooling water through the vertical conduit (130) as shown in Fig. 2, it is preferable to install a shielding bolt structure (200) to block the open end of the heat dissipation panel (100) on the left and right sides of the horizontal conduit (110).

[0026] Fig. 3 is a drawing showing the installation structure of the shielding bolt structure (200) in Fig. 2. In order to install the shielding bolt structure (200) as in Fig. 3, the manufacturer first expands the open end of the horizontal conduit (110) on the left and right sides of the heat dissipation panel (100) to form a cylindrical horizontal expansion opening (115) on the left and right sides of the heat dissipation panel (100), and then installs an annular elastic ring (210) such as an O-ring or a corner ring on the annular protrusion (113) which is the annular bottom surface of the cylindrical horizontal expansion opening (115).

[0027] Meanwhile, in carrying out the present invention, it is preferable that the outer diameter of the annular elastic ring (210) have the same size as the inner diameter of the cylindrical horizontal expansion member (115).

[0028] Next, the manufacturer inserts a shielding plate (230), which is a disc-shaped metal member having a diameter the same size as the inner diameter of the cylindrical horizontal expansion member (115), into the horizontal expansion member (115) to pressurize the annular elastic ring (210).

[0029] The annular elastic ring (210) installed to be pressurized by the shield plate (230) in this way prevents the coolant from leaking to the outside through the bottom surface of the cylindrical horizontal expansion hole (115).

[0030] Thereafter, the manufacturer may screw-jointly fasten a bolt portion (250) such as a head bolt to the inside of a cylindrical horizontal expansion member (115) so that the end of the head bolt presses the shielding plate (230), and the shielding plate (230) presses the elastic ring (210), thereby forming a shielding structure for the coolant at the end of the horizontal conduit (110).

[0031] Specifically, the inner surface of the cylindrical horizontal expansion member (115) and the outer surface of the bolt portion (250) form a screw connection, so that the manufacturer can adjust the depth of the connection of the bolt portion (250) to the inner surface of the cylindrical horizontal expansion member (115) by rotating the bolt portion (250), thereby adjusting the shielding pressure applied to the shielding plate (230) and the elastic ring (210) according to the usage environment of the water-cooled cooling device according to the present invention.

[0032] Meanwhile, in carrying out the present invention, as shown in FIG. 2, a hose nipple structure (300) to which a hose for supplying coolant or a hose for discharging coolant is connected may be installed at the open end of the lower surface of the heat dissipation panel (100) of the vertical pipe (130).

[0033] FIG. 4 is a drawing showing the installation structure of the hose nipple structure (300) in FIG. 2. In order to install the hose nipple structure (300) as in FIG. 4, the manufacturer first expands the open end of the lower surface of the heat dissipation panel (100) of the vertical conduit (130) to form a cylindrical vertical expansion opening (135) on the lower surface of the heat dissipation panel (100), and then installs a first annular ring (310) made of an elastic material such as an O-ring or a corner ring on the annular protrusion (133) which is the annular bottom surface of the cylindrical vertical expansion opening (135).

[0034] Meanwhile, in carrying out the present invention, it is preferable that the outer diameter of the first annular ring (310) has the same size as the inner diameter of the cylindrical vertical expansion hole (135), and the inner diameter of the first annular ring (310) has the same size as the inner diameter of the vertical conduit (130), so that the watertightness by the first annular ring (310) is maximized.

[0035] Next, the manufacturer installs a second annular ring (320) made of an elastic material, such as an O-ring or a corner ring, along the perimeter of the cylindrical vertical expansion hole (135) on the lower side of the heat dissipation panel (100).

[0036] In carrying out the present invention, it is preferable to maximize the watertightness by forming the inner diameter of the second annular ring (320) to be the same size as the inner diameter of the cylindrical vertical expansion hole (135).

[0037] Thereafter, the manufacturer securely installs the first annular ring (310) and the second annular ring (320) by installing the hose nipple body (330) having a saw-toothed stepped groove formed on the outer surface for coupling the hose into the vertical expansion port (135).

[0038] As shown in FIGS. 4 and 5, a coolant transfer pipe (335) is formed penetrating the inside of the hose nipple body (330), an insertion port (333) having a cylindrical structure that is open at the top and bottom is provided at the upper end of the hose nipple body (330), and a panel-shaped pressurizing portion (331) is provided along the side periphery of the hose nipple body (330), and the inner space of the insertion port (333) having a cylindrical structure that is open at the top and bottom forms a part of a coolant transfer pipe (335) provided inside the hose nipple body (330).

[0039] In addition, when carrying out the present invention, it is preferable that the outer diameter of the cylindrical insertion port (333) be formed to be the same size as the inner diameter of the vertical expansion port (135).

[0040] Meanwhile, as shown in FIGS. 4 and 5, as the insertion port (333) of the hose nipple structure (300) is inserted and installed into the vertical expansion port (135), the annular upper portion of the insertion port (333) presses the first annular ring (310) and fixes the first annular ring (310), thereby preventing coolant from leaking through the bottom surface of the cylindrical vertical expansion port (135).

[0041] Meanwhile, for this purpose, it is preferable that the upper end of the cylindrical insertion hole (333) be an annular structure having the same shape and size as the first annular ring (310).

[0042] In addition, as shown in FIGS. 4 and 5, in the process of installing the hose nipple structure (300) in the vertical expansion hole (135), the insertion hole (333) passes through the inside of the second annular ring (320), and the pressurizing part (331) pressurizes the second annular ring (320), thereby fixing and installing the second annular ring (320) on the lower surface of the heat dissipation panel (100).

[0043] Specifically, the panel-shaped pressurizing member (331) is installed to pressurize the second annular ring (320) installed along the perimeter of the cylindrical vertical expansion opening (135) on the lower side of the heat dissipation panel (100), thereby preventing coolant from leaking to the lower side of the heat dissipation panel (100) through the vertical expansion opening (135).

[0044] Meanwhile, in carrying out the present invention, the outer diameter of the cylindrical insertion port (333) may be made to have the same size as the inner diameter of the second annular ring (320), thereby maximizing the watertightness by the second annular ring (320).

[0045] Next, the manufacturer inserts a fastener (340), such as a fixing screw, into a pair of coupling holes (337) provided on the left and right sides of the pressurized portion (331), and inserts and installs the fastener (340) into a fastening hole (150) formed on the lower side of the heat dissipation panel (100), thereby completing the installation of the hose nipple structure (300).

[0046] Specifically, the manufacturer may adjust the engagement depth of the fastener (340) by rotating the fastener (340) for screw engagement inside the fastening hole (150) of the fastener (340), thereby adjusting the pressure applied to the first annular ring (310) and the second annular ring (320) according to the usage environment of the water-cooled cooling device according to the present invention.

[0047] In this way, according to the present invention, the manufacturer can efficiently assemble and manufacture a water-cooling cooling device according to the present invention through the assembly and installation structure of the shielding bolt structure (200) and the hose nipple structure (300) described above on the heat dissipation panel (100).

[0048] In addition, according to the present invention, the manufacturer can easily clean and maintain the cooling water pipe inside the heat dissipation panel (100) when necessary by disassembling and separating the shielding bolt structure (200) and the hose nipple structure (300) from the heat dissipation panel (100) in the reverse order of assembling the shielding bolt structure (200) and the hose nipple structure (300) to the heat dissipation panel (100) as described above.

[0049] In addition, the panel-type water-cooled cooling device manufactured as described above can secure high cooling efficiency through high water tightness, thereby solving various problems that occur in the module package due to heat generation of the SiC element when installed at the bottom of the SiC module package.

[0050] The terminology used herein is merely used to describe specific embodiments and is not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this application, it should be understood that the terms "comprise" or "have" indicate the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification, but do not preclude the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0051] Although the preferred embodiments and application examples of the present invention have been illustrated and described above, the present invention is not limited to the specific embodiments and application examples described above, and various modifications can be made by a person having ordinary skill in the art to which the present invention pertains without departing from the gist of the present invention as claimed in the claims, and such modifications should not be understood individually from the technical idea or prospect of the present invention.

[0052] The present invention is recognized as having industrial applicability in the cooling device-related industrial field.

Claims

1. A heat dissipation panel (100) formed so that horizontal conduits (110) and vertical conduits (130) are interconnected inside; A shielding bolt structure (200) installed on the open end of the heat dissipation panel (100) of the horizontal pipe (110) on the left and right sides; and A hose nipple structure (300) installed at the open end of the lower surface of the heat dissipation panel (100) of the vertical pipe (130) A water-cooled cooling device including:

2. In paragraph 1, The above shielding bolt structure (200) is An elastic ring (210) installed on an annular protrusion (113) inside the open end of the above horizontal pipe (110) A water-cooled cooling device comprising:

3. In paragraph 1, The above hose nipple structure (300) is A water-cooled cooling device comprising a first annular ring (310) installed on an annular protrusion (133) inside an open end of the vertical pipe (130).

4. In paragraph 3, The above hose nipple structure (300) is A water-cooled cooling device further comprising a second annular ring (320) installed on the outer side of the open end along the periphery of the open end of the vertical pipe (130).

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