Converter

Abstract

This converter comprises: a base: a cover which is arranged on the base and which forms an inner space through coupling with the base; a printed circuit board which is arranged in the inner space and which has a surface on which at least one electronic component is arranged; and a heat dissipation member which is coupled to the lower surface of the base, and in which a flow path is formed so that a refrigerant flows therethrough, wherein the material of the base is metal and the material of the heat dissipation member is plastic.

Description

converter

[0001] This embodiment relates to a converter.

[0002]

[0003] The electrical devices of automobiles typically include engine electrical devices (starter, ignition, charging) and lighting devices, but recently, as vehicles have become more electronically controlled, most systems, including chassis electrical devices, are becoming more electronic.

[0004] Various electrical components installed in automobiles, such as lamps, audio, heaters, and air conditioners, are supplied with power from the battery when the automobile is stopped and from the generator when the automobile is running. In this case, the power generation capacity of the 14V power system is used as the normal power voltage.

[0005] Recently, with the development of the information technology industry, various new technologies (motorized power steering, the Internet, etc.) aimed at increasing the convenience of automobiles are being incorporated into vehicles, and it is expected that the development of new technologies that can make the most of the current automobile systems will continue in the future.

[0006] Hybrid electric vehicles (HEVs), regardless of whether they are soft or hard, are equipped with a DC-DC converter (Low Voltage DC-DC Converter) to supply 12V to the electrical load. Furthermore, the DC-DC converter, which functions as the alternator in conventional gasoline vehicles, steps down the high voltage of the main battery (typically a high-voltage battery of 144V or higher) to supply 12V to the electrical load.

[0007] A DC-DC converter is an electronic circuit device that converts a DC power source of one voltage to a DC power source of another voltage, and is used in various fields such as automobile electrical components and television sets.

[0008] The converter's exterior is formed by a housing. Inside the housing are numerous electronic components. These electronic components generate heat when operated. This heat can overload the electronic components, disrupting their function and potentially causing malfunctions.

[0009]

[0010] The present embodiment provides a converter that can improve heat dissipation efficiency and be lightweight.

[0011]

[0012] A converter according to the present embodiment comprises: a base; a cover disposed on the base and forming an internal space by being coupled with the base; a printed circuit board disposed in the internal space and having at least one electronic component disposed on a surface thereof; and a heat dissipation member coupled to a lower surface of the base and having a flow path formed therein through which a coolant flows, wherein the base is made of metal and the heat dissipation member is made of plastic.

[0013] A heat dissipation surface is formed on the lower surface of the base, and the heat dissipation member includes a lower plate and a side plate that is bent from an edge of the lower plate and extends upward, and the flow path may have an inner surface formed by the heat dissipation surface, the inner surface of the side plate, and the upper surface of the lower plate.

[0014] On the lower surface of the above base, a sealing member joining groove having a concave shape upwards compared to other areas may be arranged along the perimeter of the heat dissipation surface.

[0015] It may include a sealing member that is placed in the above sealing member joining groove and seals the above-mentioned euro.

[0016] The above heat dissipation member can be screw-connected to the lower surface of the base.

[0017] A flow guide that protrudes upwards more than other regions is arranged in a region forming the inner surface of the flow path among the upper surfaces of the lower plate, and the flow path can be divided into a plurality of regions with different widths through the flow guide.

[0018] A guide groove having a concave shape upwards compared to other areas may be arranged on the heat dissipation surface facing the above-mentioned euro guide.

[0019] A connector module coupled to the heat dissipation member may be included, and the connector module may include at least one terminal electrically connected to the printed circuit board.

[0020] The above heat dissipation member and the connector module can be formed integrally by insert injection.

[0021] The connector module may include a bus bar; a first terminal having a lower end connected to the bus bar and an upper end connected to the printed circuit board; a second terminal having a lower end connected to the bus bar and an upper end connected to the printed circuit board; and a third terminal disposed on the outside of the printed circuit board and having a lower end connected to the bus bar.

[0022]

[0023] In this embodiment, the cover and heat dissipation member are formed of plastic, which has the advantage of making the converter lighter than conventional converters.

[0024] In addition, the heat dissipation member and connector module are formed as one piece through insert injection, which has the advantage of securing a wider space within the housing and improving production efficiency through improved assembly.

[0025]

[0026] FIG. 1 is a perspective view showing one side of a converter according to an embodiment of the present invention.

[0027] Figure 2 is a perspective view showing the other side of a converter according to an embodiment of the present invention.

[0028] Figure 3 is a cross-sectional view of a converter according to an embodiment of the present invention.

[0029] Figure 4 is an exploded perspective view of a converter according to an embodiment of the present invention.

[0030] Figure 5 is a drawing showing Figure 4 from a different angle.

[0031] Figure 6 is a perspective view showing the upper surface of a base according to an embodiment of the present invention.

[0032] Figure 7 is a drawing showing the connector module in Figure 6.

[0033] Fig. 8 is a perspective view of a heat dissipation member according to an embodiment of the present invention.

[0034] Figure 9 is a drawing showing the core in Figure 8 disassembled and illustrated.

[0035] Fig. 10 is a perspective view of a connector module according to an embodiment of the present invention.

[0036] Fig. 11 is a cross-sectional view showing the combined structure of a base and a connector module according to an embodiment of the present invention.

[0037] Fig. 12 is a drawing for explaining the power conversion structure of a converter according to an embodiment of the present invention.

[0038]

[0039] Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the attached drawings.

[0040] However, the technical idea of ​​the present invention is not limited to some of the embodiments described, but can be implemented in various different forms, and within the scope of the technical idea of ​​the present invention, one or more of the components between the embodiments can be selectively combined or substituted for use.

[0041] In addition, terms (including technical and scientific terms) used in the embodiments of the present invention may be interpreted as having a meaning that can be generally understood by a person of ordinary skill in the technical field to which the present invention belongs, unless explicitly and specifically defined and described, and terms that are commonly used, such as terms defined in a dictionary, may be interpreted in consideration of the contextual meaning of the relevant technology.

[0042] In addition, the terms used in the embodiments of the present invention are for the purpose of describing the embodiments and are not intended to limit the present invention. In this specification, the singular may also include the plural unless specifically stated in the phrase, and when it is described as “A and / or at least one (or more) of B, C,” it may include one or more of all combinations that can be combined with A, B, and C.

[0043] Additionally, in describing components of embodiments of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used.

[0044] These terms are intended only to distinguish one component from another, and are not intended to limit the nature, order, or sequence of the component.

[0045] And, when a component is described as being 'connected', 'coupled' or 'connected' to another component, it may include not only cases where the component is directly connected, coupled or connected to the other component, but also cases where the component is 'connected', 'coupled' or 'connected' by another component between the component and the other component.

[0046] Additionally, when it is described as being formed or arranged "above or below" each component, "above" or "below" includes not only cases where the two components are in direct contact with each other, but also cases where one or more other components are formed or arranged between the two components. Also, when it is expressed as "above" or "below", it can include the meaning of the downward direction as well as the upward direction based on one component.

[0047] FIG. 1 is a perspective view showing one side of a converter according to an embodiment of the present invention, FIG. 2 is a perspective view showing the other side of a converter according to an embodiment of the present invention, FIG. 3 is a cross-sectional view of a converter according to an embodiment of the present invention, FIG. 4 is an exploded perspective view of a converter according to an embodiment of the present invention, FIG. 5 is a view showing FIG. 4 from a different angle, FIG. 6 is a perspective view showing an upper surface of a base according to an embodiment of the present invention, FIG. 7 is a view showing FIG. 6 excluding a connector module, FIG. 8 is a perspective view of a heat dissipation member according to an embodiment of the present invention, FIG. 9 is a view showing an exploded view of a core in FIG. 8, FIG. 10 is a perspective view of a connector module according to an embodiment of the present invention, FIG. 11 is a cross-sectional view showing a coupling structure of a base and a connector module according to an embodiment of the present invention, and FIG. 12 is a drawing for explaining a power conversion structure of a converter according to an embodiment of the present invention.

[0048] Referring to FIGS. 1 to 12, a converter (10) according to an embodiment of the present invention may include a base (100), a cover (200), a printed circuit board (300), a heat dissipation member (400), and a connector module (500).

[0049] The converter (10) may have an outer shape formed by a housing. The housing may be formed by combining the base (100) and the cover (200). The base (100) may have a plate shape. The base (100) may be formed of a metal material. The printed circuit board (300) and the cover (200) may be arranged on the upper portion of the base (100), and the heat dissipation member (400) may be arranged on the lower portion of the base (100).

[0050] The base (100) may have a rectangular cross-sectional shape. The base (100) may include a leg portion (120). The leg portion (120) may have a shape that protrudes outward from an edge region of the base (100) more than other regions. An end portion of the leg portion (120) may be positioned lower than the lower surface of the base (100). A screw hole may be formed in the end portion of the leg portion (120) so that a screw may pass through it. The screw may be screw-connected to the installation region of the converter (10) by passing through the screw hole.

[0051] The base (100) may include a first coupling portion (113, see FIG. 6) for coupling with the cover (200). The first coupling portions (113) may be provided in multiple numbers and may be arranged spaced apart from each other along the perimeter of the base (100). The first coupling portions (113) may include a hole penetrating from the upper surface to the lower surface. A second coupling portion (233) of the cover (200), which will be described later, may be coupled to the hole.

[0052] The above base (100) may include an upper surface facing the printed circuit board (300) and a lower surface opposite to the upper surface and facing the heat dissipation member (400).

[0053] As illustrated in FIGS. 5 and 6, a heat dissipation surface (150) may be formed on the lower surface of the base (100). The heat dissipation surface (150) may be arranged to overlap the heat dissipation member (400) in the vertical direction. A flow path may be formed in a space formed by the lower surface of the heat dissipation surface (150) and the upper surface of the heat dissipation member (400) so that a refrigerant may flow. The heat dissipation surface (150) may have a closed loop shape. The heat dissipation surface (150) may be formed as a single line from one end to the other end. The heat dissipation surface (150) may have a shape corresponding to a region of the heat dissipation member (400). Here, the region of the heat dissipation member (400) may be a region within the heat dissipation member (400) excluding the inlet (410) and the outlet (420) described later. The heat dissipation surface (150) may not have a constant width from one end to the other. The heat dissipation surface (150) may include a plurality of regions with different widths. The width of one end and the other end of the heat dissipation surface (150) may be smaller than the width of the central region disposed between the one end and the other end of the heat dissipation surface (150).

[0054] An inlet port for introducing refrigerant into the passage may be formed at one end of the heat dissipation surface (150). An outlet port for discharging refrigerant circulating through the passage to the outside may be formed at the other end of the heat dissipation surface (150).

[0055] The heat dissipation surface (150) may have a region that is bent at least once. For example, as illustrated in FIG. 6, the heat dissipation surface (150) may include a first region (157) in which the inlet is formed at an end, a second region (158) in which the outlet is formed at an end, and a third region (159) that connects the first region (157) and the second region (158) and is perpendicular to the first region (157) and the second region (158). The width of the third region (159) may be greater than the width of the first region (157) or the width of the second region (158). The second region (158) may include a region that is bent at least once.

[0056] The heat dissipation surface (150) may be formed with a guide groove (152) that is concave upwards compared to other regions. A guide (450, see FIG. 9) of the heat dissipation member (400) to be described later may be coupled to the guide groove (152). The guide groove (152) may have an arc shape. The guide groove (152) may be arranged between the first region (157) and the third region (159). The heat dissipation surface (150) may be divided into a plurality of regions based on a direction perpendicular to the flow direction of the refrigerant through the guide groove (152). For example, as illustrated in FIG. 7, the heat dissipation surface (150) may include an inner region having a first length (L1) and an outer region having a second length (L2) longer than the first length (L1) based on the guide groove (152).

[0057] A sealing member joining groove (160) may be formed on the outer side of the heat dissipation surface (150) on the lower surface of the base (100). The sealing member joining groove (160) may be arranged along the periphery of the heat dissipation surface (150). The sealing member joining groove (160) may have a closed loop cross-section. The bottom surface of the sealing member joining groove (160) may be arranged to be stepped upward from the lower surface of the heat dissipation surface (150). A sealing member (not shown) may be joined to the sealing member joining groove (160) to seal between the base (100) and the heat dissipation member (400). The sealing member may prevent the refrigerant in the passage from leaking to the outside.

[0058] A third connecting portion (115) protruding downwards more than other areas may be arranged on the outer side of the heat dissipation surface (150) of the lower surface of the base (100). A screw hole may be formed on the lower surface of the third connecting portion (115) so that a screw may be connected thereto. The third connecting portions (115) may be provided in multiple numbers and may be arranged to be spaced apart from each other along the perimeter of the heat dissipation surface (150). The heat dissipation member (400) may be screw-connected to the lower surface of the base (100) through the third connecting portions (115).

[0059] An installation surface (170, see FIG. 7) to which the connector module (500) is coupled may be formed on the lower surface of the base (100). The installation surface (170) may be formed on the outer side of the heat dissipation surface (150). The installation surface (170) may be arranged to overlap at least a portion of the connector module (500) in the vertical direction. A first through-hole (172) through which a first terminal (510, see FIG. 10) in the connector module (500) to be described later passes, and a second through-hole (174) through which a second terminal (520) passes, may be formed on the installation surface (170). The first through-hole (172) and the second through-hole (174) may each have a shape that passes through the lower surface from the upper surface of the base (100). The cross-sectional area of ​​the first through hole (172) may be larger than the cross-sectional area of ​​the second through hole (174).

[0060] An additional sealing member joining groove (179) may be formed on the outer side of the above-mentioned installation surface (170) so as to be concave upwards compared to other areas, and into which the sealing member is joined. The additional sealing member joining groove (179) may be connected to the sealing member joining groove (160). Sealing may be achieved between the connector module (500) and the lower surface of the base (100) through the sealing member arranged in the additional sealing member joining groove (179).

[0061] A connecting portion (177) protruding downwards on the outer side of the installation surface (170) of the lower surface of the base (100) and to which the connector module (500) is screw-connected may be formed. A screw hole may be formed on the lower surface of the connecting portion (177) so that a screw may be connected thereto.

[0062] The cover (200) may be placed on the base (100). The cover (200) may form an internal space of the converter (10) by being coupled with the base (100). The cover (200) may be made of a plastic material. The cover (200) may include an upper plate (210) and a side plate (220). The upper surface of the upper plate (210) forms the upper surface of the converter (10) and may have a rectangular cross-sectional shape. The side plate (220) may have a shape that is bent from an edge of the upper plate (210) and extends downward, and may form a side surface of the converter (10). Additionally, the cover (200) may include a flange (230) that is bent outward from the lower end of the side plate (220), and a second connecting portion (233, see FIG. 4) that is shaped like a projection protruding downward may be formed on the lower surface of the flange (230). The second connecting portion (233) may be connected to a hole in the first connecting portion (113) of the base (100).

[0063] An opening may be formed on the side of the cover (200). The opening may be shaped to penetrate from the outer surface to the inner surface of the side plate (220). A first connector (330) or a second connector (340), which will be described later, may be positioned to penetrate the opening. The opening may include a first opening (250) positioned to allow the first connector (330) to penetrate therethrough, and a second opening (260) positioned to allow the second connector (340) to penetrate therethrough. The first opening (250) may be formed on one side of the cover (200), and the second opening (260) may be formed on the other side adjacent to one side of the cover (200).

[0064] The printed circuit board (300) may be placed in a space within the converter (10). The printed circuit board (300) may be placed in a space formed by the upper surface of the base (100) and the inner surface of the cover (200). The printed circuit board (300) is formed in a plate shape, and at least one electronic component (310) for driving the converter (10) may be placed on the upper or lower surface. For example, the electronic component (310) may include any one of a transformer for voltage conversion, an inductor for obtaining inductance, and a FET element. The electronic component (310) may be placed to overlap the heat dissipation surface (150) or the heat dissipation member (400) in the vertical direction.

[0065] A spacer may be provided on the upper surface of the base (100) so as to be spaced apart from the lower surface of the printed circuit board (300) in the vertical direction. The spacer has a shape that protrudes upward from the upper surface of the base (100) and may support the lower surface of the printed circuit board (300). The printed circuit board (300) may be screw-coupled to the spacer.

[0066] The heat dissipation member (400) may be coupled to the lower surface of the base (100). The heat dissipation member (400) may include a first region (401) and a second region (470). The first region (401) may be referred to as a heat dissipation region. The first region (401) may include a flow path (430) through which a refrigerant flows. The first region (401) may include a lower plate (445) and a side plate (440) protruding upward from an edge of the lower plate (445). The lower surface of the lower plate (445) may form the lower surface of the converter (10). The flow path (430) may be formed by the heat dissipation surface (150) among the upper surface of the lower plate (445), the inner surface of the side plate (440), and the lower surface of the base (100). The cross-sectional shape of the above-mentioned euro (430) can be formed to correspond to the cross-sectional shape of the above-mentioned heat dissipation surface (150).

[0067] The heat dissipation member (400) may be screw-coupled to the lower surface of the base (100). The heat dissipation member (400) may be formed with a fourth connecting portion (405) that protrudes outward from the outer surface of the side plate (440). The fourth connecting portion (405) may be arranged to face the third connecting portion (115) of the base (100) in the vertical direction. The fourth connecting portion (405) may include a hole through which a screw passes. Accordingly, as the screw passes through the hole of the fourth connecting portion (405) and is coupled within the hole of the third connecting portion (115), the heat dissipation member (400) and the base (100) may be screw-coupled. The third connecting portion (115) and the fourth connecting portion (405) may be provided in multiple numbers, and may be arranged along the circumference of the flow path (430). The third connecting portion (115) and the fourth connecting portion (114) can be mutually connected by heat fusion. Accordingly, connecting parts such as screws can be omitted.

[0068] The upper surface of the side plate (440) may be arranged to face the sealing member joining groove (160) in the upper direction on the lower surface of the base (100). The sealing member may be arranged between the upper surface of the side plate (440) and the sealing member joining groove (160). The cross-sectional shape of the upper surface of the side plate (440) may be formed to correspond to the cross-sectional shape of the sealing member joining groove (160).

[0069] On the lower surface of the lower plate (445), a heat dissipation fin (407, see FIG. 2) protruding downward from other areas may be formed. Through the heat dissipation fin (407), heat dissipation efficiency may be achieved by increasing the cross-sectional area of ​​the heat dissipation member (400). The arrangement area of ​​the heat dissipation fin (407) may be a grid shape in which a plurality of I-shaped protrusions are arranged perpendicular to each other. In addition, there is an advantage in that external impact can be prevented from being transmitted to the inside through the heat dissipation fin (407).

[0070] An inlet (410) for introducing refrigerant into the flow path (430) may be arranged at one end of the flow path (430), and an outlet (420) for discharging refrigerant circulated through the flow path (430) to the outside may be formed at the other end of the flow path (430). The flow path (430) may be formed as a single line from the inlet (410) to the outlet (420). At least a portion of each of the inlet (410) and the outlet (420) may be arranged to protrude outward from the side surface of the housing.

[0071] The above-described flow path (430) may include regions having different vertical heights. For example, the height of the end regions of the flow path (430) adjacent to the inlet (410) and the outlet (420) may be formed to be higher than the height of the central region of the flow path (430). Here, the central region of the flow path (430) may be defined as any region positioned between both ends of the flow path (430).

[0072] A flow guide (450) may be placed within the above flow path (430). The flow guide (450) may have a shape that protrudes upward from the upper surface of the lower plate (445). The flow guide (450) may be coupled to the guide groove (152) of the base (100). The cross-sectional shape of the flow guide (450) may be formed to correspond to the cross-sectional shape of the guide groove (152).

[0073] In more detail, as illustrated in FIG. 8, when the flow path (430) is divided into a first flow path (432) in which the inlet (410) is arranged at an end, a second flow path (438) in which the outlet (420) is arranged at an end, and a third flow path (436) arranged between the first flow path (432) and the second flow path (438), the third flow path (436) can be arranged perpendicular to the first flow path (432) and the second flow path (438).

[0074] The above-described flow path guide (450) may be arranged between the first flow path (432) and the third flow path (436). The flow path guide (450) may have an arc shape. The space in which the flow path guide (450) is arranged in the flow path (430) may be divided into a plurality of regions through the flow path guide (450). For example, the plurality of spaces may be arranged adjacently in a direction perpendicular to the flow direction of the refrigerant in the flow path (430). The plurality of spaces may include a first space facing the inner region of the heat dissipation surface (150) in a vertical direction, and a second space facing the outer region of the heat dissipation surface (150) in a vertical direction. The width of the first space may be smaller than the width of the second space. Considering the shape in which the cross-sectional area of ​​the flow path (430) increases from the first flow path (432) to the third flow path (436), the space within the flow path (430) is divided into a plurality of spaces through the flow path guide (450), so that the refrigerant within the flow path (430) can flow more smoothly. The flow path guide (450) can be coupled to the guide groove (152) of the heat dissipation surface (150).

[0075] The second region (470) may be arranged on the outside of the first region (401). For example, the second region (470) may be arranged on the outside of the first flow path (432). The second region (470) may be referred to as a connector region. The connector module (500) may be coupled to the second region (470). A portion of the second region (470) may be arranged to overlap the base (100) in a vertical direction, and the remaining portion may be arranged to protrude outward from the side plate (220) of the cover (200).

[0076] As illustrated in FIGS. 8 and 9, the second region (470) may include a base plate (472) and a first guide (474) and a second guide (478) disposed on the base plate (472).

[0077] The above base plate (472) is formed in a plate shape and may have a shape that protrudes horizontally from the side of the first region (401) of the heat dissipation member (400). A protrusion (471) that protrudes downward more than other regions may be formed on the lower surface of the base plate (472). The protrusion (471) may be arranged to correspond to the arrangement area of ​​the coupling boss (552, 554, 556, see FIG. 10) in the connector module (500) described below.

[0078] The first guide (474) may have a shape that protrudes upward from the upper surface of the base plate (472). The upper surface of the first guide (474) may be coupled to the lower surface of the base (100). The upper surface of the first guide (474) may be screw-coupled to the lower surface of the base (100). A screw-coupled portion (475) having a screw hole through which a screw passes may be arranged on a side surface of the first guide (474).

[0079] A first hole (481) and a second hole (482) may be formed on the upper surface of the first guide (474). The first hole (481) and the second hole (482) may be opened upward and spaced apart from each other. A first terminal (510) of a connector module (500) to be described later may be arranged in the first hole (481). A second terminal (520) of a connector module (500) to be described later may be arranged in the second hole (482). The first terminal (510) and the second terminal (520) may be accommodated in the first hole (481) and the second hole (482), respectively, such that a portion of the upper end thereof may protrude upward from the upper surface of the first guide (474).

[0080] A coupling groove (473, see FIG. 9) may be formed on the outer side of the first hole (481) on the upper surface of the first guide (474). The coupling groove (473) may be formed concavely downward from the upper surface of the first guide (474). The coupling groove (473) may be arranged to be mutually partitioned based on the first hole (481) and the partition wall (485, see FIG. 11). The coupling groove (473) may be arranged on the outer side in the radial direction of the first hole (481). A core (540) of a connector module (500), which will be described later, may be arranged in the coupling groove (473). The cross-sectional shape of the coupling groove (473) may be a ring shape to correspond to the cross-sectional shape of the core (540).

[0081] The second guide (478) may have a shape that protrudes upward from the upper surface of the base plate (472). The second guide (478) may be positioned so as not to overlap with the base (100) in the vertical direction. The second guide (478) may protrude outward from the outer surface of the side plate (220) of the cover (200).

[0082] The above second guide (478) can be interconnected with the above first guide (474) through a connecting plate.

[0083] A third hole (483) may be formed on the upper surface of the second guide (478). The third hole (483) may be opened upward. A third terminal (530) of a connector module (500) to be described later may be arranged in the third hole (483). As illustrated in FIG. 11, the third terminal (530) may include a plurality of regions having different cross-sectional areas. The third terminal (530) may include an upper region having a first cross-sectional area and a lower region (532) having a second cross-sectional area larger than the first cross-sectional area, and the lower region (532) may be arranged within the third hole (483). The cross-sectional shape of the third hole (483) may correspond to the cross-sectional shape of the lower region (532). The upper region may protrude upward from the upper surface of the second guide (478).

[0084] The material of the above heat dissipation member (400) may be resin or plastic. For example, the material of the above heat dissipation member (400) may be polymer.

[0085] However, this is exemplary, and the material of the inlet (410) and the outlet (420) connected to both ends of the filament (430) among the heat dissipation members (400) may be metal, and the material of the remaining areas may be plastic.

[0086] As illustrated in FIGS. 1 and 12, the converter (10) may include a plurality of connectors. The plurality of connectors may be electrically connected to the printed circuit board (300) to input power for conversion to the converter (10), transmit or receive signals related to the operation of the converter (10), or output the converted power of the converter (10) to the outside.

[0087] In detail, the plurality of connectors may include a first connector (330), a second connector (340), and a connector module (500).

[0088] The first connector (330) may be arranged on the side of the converter (10). The first connector (330) may be arranged to pass through the first opening (250) of the cover (200). The first connector (330) may be electrically connected to the printed circuit board (300). Power for conversion may be provided to the converter (10) through the first connector (330).

[0089] The second connector (340) may be arranged on a side of the converter (10). The side of the converter (10) on which the second connector (340) is arranged may be adjacent to the side of the converter (10) on which the first connector (330) is arranged. The second connector (340) may be arranged to pass through the second opening (260). The second connector (340) may be electrically connected to the printed circuit board (300). An external terminal is coupled to the second connector (340), and accordingly, the external terminal and the converter (10) may transmit and receive an electrical signal for driving the converter (10).

[0090] The connector module (500) may be formed of a metal material. The connector module (500) may be coupled with the heat dissipation member (400). The connector module (500) may be coupled with the printed circuit board (300). The connector module (500) may be coupled to a second region (470) within the heat dissipation member (400). The connector module (500) may be integrally formed with the heat dissipation member (400) through insert injection.

[0091] The above connector module (500) may be an output connector for outputting power converted through the converter (10). The above connector module (500) may be referred to as a third connector.

[0092] The connector module (500) may include a bus bar (550), a first terminal (510), a second terminal (520), and a third terminal (530). The bus bar (550), the first terminal (510), the second terminal (520), and the third terminal (530) may be formed of a metal material. For example, the material of the bus bar (550) may be aluminum (Al), and the material of the first to third terminals (510, 520, 530) may be copper (Cu).

[0093] The above bus bar (550), the first terminal (510), the third terminal (520), and the third terminal (530) can be formed integrally with the heat dissipation member (400) by insert injection.

[0094] The above bus bar (550) is formed in a plate shape and can support the first terminal (510), the second terminal (520), and the third terminal (530) within the second region (470) of the heat dissipation member (400). The bus bar (550) can be arranged perpendicular to the first terminal (510), the second terminal (520), and the third terminal (530). The bus bar (550) can electrically connect the first terminal (510), the second terminal (520), and the third terminal (530) to each other.

[0095] As illustrated in Fig. 11, the bus bar (550) may include a first coupling hole (553) to which the first terminal (510) is coupled, a second coupling hole (555) to which the second terminal (520) is coupled, and a third coupling hole (557) to which the third terminal (530) is coupled. The first coupling hole (553), the second coupling hole (555), and the third coupling hole (557) may be arranged to be spaced apart from each other along the longitudinal direction of the bus bar (550). The first coupling hole (553), the second coupling hole (555), and the third coupling hole (557) may be formed to have different cross-sectional areas.

[0096] A screw thread or screw groove may be formed on the inner surface of the first coupling hole (553). The first terminal (510) may be screw-coupled to the inner surface of the first coupling hole (553). A screw thread or screw groove may be formed on the inner surface of the second coupling hole (555). The second terminal (520) may be screw-coupled to the inner surface of the second coupling hole (555). A screw thread or screw groove may be formed on the inner surface of the third coupling hole (557). The third terminal (530) may be screw-coupled to the inner surface of the third coupling hole (557).

[0097] In order to increase the screw connection length between the first to third terminals (510, 520, 530) and the bus bar (550) based on the vertical direction, a connection boss (552, 554, 556) having a shape that protrudes downward more than other regions may be arranged in a region corresponding to the formation region of the first connection hole (553), the second connection hole (555), and the third connection hole (557) on the lower surface of the bus bar (550). The connection bosses (552, 554, 556) may include a first connection boss (552) in which the first connection hole (553) is formed on the inside, a second connection boss (554) in which the second connection hole (555) is formed on the inside, and a third connection boss (556) in which the third connection hole (557) is formed on the inside.

[0098] The first terminal (510) may be coupled at both ends to the printed circuit board (300) and the bus bar (550). The first terminal (510) may provide power converted through an electronic component in the printed circuit board (300) to the bus bar (550). The cross-sectional area of ​​the first terminal (510) may be larger than the cross-sectional area of ​​the second terminal (520). The upper surface of the first terminal (510) may be in contact with the lower surface of the printed circuit board (300), and the lower end of the first terminal (510) may be coupled to the first coupling hole (553) of the bus bar (550). A first screw hole into which a screw (S) is coupled may be formed on the upper surface of the first terminal (510). The screw (S) may be screw-coupled to the first screw hole by penetrating the hole of the printed circuit board (300). Accordingly, the printed circuit board (300) and the connector module (500) may be electrically connected. A first screw coupling portion (553) having a shape that protrudes downward more than other areas may be formed at the lower end of the first terminal (510). The first screw coupling portion (553) may be formed to have a smaller cross-sectional area than other areas within the first terminal (510). The first screw coupling portion (553) may be formed to correspond to the cross-sectional shape of the first coupling hole (553). The first screw coupling portion (553) may be screw-coupled within the first coupling hole (553).

[0099] At least a portion of the first terminal (510) may be positioned within the first hole (481) of the heat dissipation member (400). The first terminal (510) may be firmly maintained in a coupled state within the first hole (481) through the partition wall (485).

[0100] A core (540) may be placed on the outside of the first terminal (510). The core (540) may be a ferrite core. The core (540) may be accommodated within the coupling groove (473). The core (540) may have a ring-shaped cross-section. Electrical noise generated from the first terminal (510) may be filtered through the core (540).

[0101]

[0102] *80 The second terminal (520) may be connected at both ends to the printed circuit board (300) and the bus bar (550). The second terminal (520) is for removing noise in the power supplied from the first terminal (510), and the upper end thereof may be connected to the printed circuit board (300). The printed circuit board (300) connected to the second terminal (520) may be provided with a noise removal filter (not shown) for removing noise in the converted power. Accordingly, a portion of the power input from the first terminal (510) may be transmitted to the noise removal filter through the second terminal (520), thereby removing noise.

[0103] The cross-sectional area of ​​the second terminal (520) may be smaller than the cross-sectional area of ​​the first terminal (510). The upper surface of the second terminal (520) may be in contact with the lower surface of the printed circuit board (300), and the lower surface of the second terminal (520) may be coupled to the second coupling hole (555) of the bus bar (550). A second screw hole into which a screw (S) is coupled may be formed on the upper surface of the second terminal (520). The screw (S) may penetrate the hole of the printed circuit board (300) and be screw-coupled to the second screw hole. Accordingly, the printed circuit board (300) and the connector module (500), more specifically, the noise removal filter and the connector module (500), may be electrically connected. A second screw engaging portion (555) protruding downward from the lower end of the second terminal (520) may be formed. The second screw engaging portion (555) may be formed to have a smaller cross-sectional area than other areas within the second terminal (520). The cross-sectional area of ​​the second screw engaging portion (555) may be smaller than that of the first screw engaging portion (553). The second screw engaging portion (555) may be formed to correspond to the cross-sectional shape of the second engaging hole (555). The second screw engaging portion (555) may be screw-engaged within the second engaging hole (555).

[0104] The third terminal (530) may have a lower end coupled to the bus bar (550) and an upper end exposed above the connector module (500). The upper end of the third terminal (530) may have a smaller cross-sectional area than other areas and may be exposed above the converter (10). The third terminal (530) may have a pin shape and may be connected to an external component. Power converted within the converter (10) provided from the first terminal (510) may be transmitted to the external component through the third terminal (530).

[0105] The cross-sectional area of ​​the third terminal (530) may be larger than the cross-sectional area of ​​the first terminal (510). A third screw engaging portion (557) protruding downward more than other areas may be formed at the lower end of the third terminal (530). The third screw engaging portion (557) may be formed to have a smaller cross-sectional area than other areas within the third terminal (530). The third screw engaging portion (557) may be formed to correspond to the cross-sectional shape of the third engaging hole (557). The third screw engaging portion (557) may be screw-engaged within the third engaging hole (557).

[0106] According to the above structure, the cover and heat dissipation member are made of plastic, which has the advantage of making the converter lighter than conventional converters.

[0107] In addition, the heat dissipation member and connector module are formed as one piece through insert injection, which has the advantage of securing a wider space within the housing and improving production efficiency through improved assembly.

[0108] Although all components constituting the embodiments of the present invention have been described above as being combined or operating in combination, the present invention is not necessarily limited to these embodiments. That is, within the scope of the purpose of the present invention, all components may be selectively combined and operated one or more times. In addition, terms such as "include," "comprise," or "have" described above, unless specifically stated to the contrary, mean that the corresponding component may be inherent, and therefore should be interpreted as including other components rather than excluding other components. All terms, including technical or scientific terms, have the same meaning as generally understood by a person of ordinary skill in the art to which the present invention pertains, unless otherwise defined. Commonly used terms, such as terms defined in a dictionary, should be interpreted as being consistent with the contextual meaning of the related technology, and shall not be interpreted in an ideal or excessively formal sense, unless explicitly defined in the present invention.

[0109] The above description is merely an illustrative description of the technical idea of ​​the present invention, and those skilled in the art will appreciate that various modifications and variations may be made without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the technical idea of ​​the present invention, and the scope of the technical idea of ​​the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within a scope equivalent thereto should be interpreted as being included in the scope of the rights of the present invention.

Claims

1. Base; A cover placed on the base and forming an internal space by combining with the base; A printed circuit board arranged in the above internal space and having at least one electronic component arranged on the surface; It includes a heat dissipation member that is joined to the lower surface of the above base and has a flow path formed therein through which a coolant flows. The material of the above base is metal, A converter in which the material of the above heat dissipation member is plastic.

2. In paragraph 1, A heat dissipation surface is formed on the lower surface of the above base, The above heat dissipation member includes a lower plate and a side plate that is bent from an edge of the lower plate and extends upward, The above euro is a converter whose inner surface is formed by the heat dissipation surface, the inner surface of the side plate, and the upper surface of the lower plate.

3. In paragraph 1, A converter in which a sealing member joining groove having a concave shape upwards relative to other areas is formed along the perimeter of the heat dissipation surface on the lower surface of the above base.

4. In paragraph 3, A converter including a sealing member that is arranged in the sealing member joining groove and seals the euro.

5. In paragraph 1, The above heat dissipation member is a converter that is screw-connected to the lower surface of the base.

6. In paragraph 2, In the area forming the inner surface of the above-mentioned euro on the upper surface of the above-mentioned lower plate, a euro guide protruding upwards more than other areas is arranged, A converter in which the euro is divided into a plurality of areas of different widths through the euro guide.

7. In paragraph 6, A converter in which a guide groove having a concave shape upwards is arranged on the heat dissipation surface facing the above-mentioned euro guide.

8. In paragraph 1, Including a connector module coupled with the above heat dissipation member, A converter wherein the connector module includes at least one terminal electrically connected to the printed circuit board.

9. In paragraph 8, A converter in which the above heat dissipation member and the above connector module are formed integrally by insert injection.

10. In paragraph 8, The above connector module, bus bar; A first terminal having a lower end connected to the above bus bar and an upper end connected to the above printed circuit board; A second terminal having a lower end connected to the above bus bar and an upper end connected to the above printed circuit board; and A converter including a third terminal disposed on the outside of the printed circuit board and having a lower end connected to the bus bar.

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