Cooling plate

Abstract

A cooling plate is disclosed. The cooling plate minimizes pressure applied by cooling water to cooling fins, thereby minimizing power consumption of a cooling system. The cooling plate removes heat from a circuit component and comprises an upper plate and a lower plate. The upper plate includes an inlet channel communicating with an inlet, an outlet channel communicating with an outlet, and upper plate groove for accommodating a plurality of cooling fins. The height of each of the cooling fins is equal to the depth of each of the upper plate groove.

Description

cooling plate

[0001] The present invention relates to a cooling plate for removing heat generated from circuit components.

[0002] Many electric battery devices contain numerous circuit components, such as high-performance processors, various sensors, Graphics Processing Units (GPUs), and Central Processing Units (CPUs), and these circuit components generate a significant amount of heat during operation.

[0003] Therefore, a cooling plate is required to be attached to one side of a circuit component that is a high heat source to cool the circuit component.

[0004] The objective of the present invention is to provide a cooling plate capable of minimizing the power consumption of a pump by minimizing the pressure applied by the cooling water to the cooling fins.

[0005] The aforementioned objective of the present invention is achieved by the specific details described below.

[0006] A cooling plate according to an embodiment of the present invention is a cooling plate for removing heat from circuit components and includes an upper plate and a lower plate. The upper plate includes an inlet for the inflow of cooling water and an outlet for the outflow of cooling water. The lower plate is coupled to the upper plate and has a plurality of cooling fins arranged thereon. Additionally, the upper plate further includes an inlet flow path communicating with the inlet, an outlet flow path communicating with the outlet, and an upper plate groove that accommodates the plurality of cooling fins. The height of the cooling fins is equal to the depth of the upper plate groove.

[0007] Specifically, the upper plate groove and the lower plate include a fin area where a plurality of cooling fins are arranged and an edge area surrounding the fin area. Cooling water flowing into the interior of the upper plate groove passes between the cooling fins to reach the edge area and travels along the edge area.

[0008] Specifically, a pair of internal partitions are formed in the upper plate groove. The pair of internal partitions are formed between the pin area and the edge area corresponding to the horizontal direction of the upper plate groove, thereby partitioning the pin area and the edge area.

[0009] Specifically, a first group and a second group, each consisting of a plurality of cooling fins, are arranged between a pair of internal partitions. The longitudinal direction of the cooling fins is arranged parallel to the longitudinal direction of the internal partitions.

[0010] Specifically, in the pin area of ​​the lower plate, the first group and the second group are spaced apart by a certain distance. And the inlet flow path of the upper plate is located above the space where the first group and the second group are spaced apart.

[0011] Specifically, the top plate further includes an upper groove. The upper groove is formed in the top plate groove and communicates with the top plate groove. Cooling water flowing into the inlet flow path passes through the upper groove and moves to the top plate groove.

[0012] Specifically, the upper groove is formed on the upper part of the pin area of ​​the upper plate groove, and is not formed on the upper part of the edge area of ​​the upper plate groove.

[0013] Specifically, the top plate further includes a pair of upper bulkheads. The pair of upper bulkheads are formed in an upper groove, and the upper bulkhead groove between the pair of upper bulkheads communicates with the top plate groove.

[0014] Specifically, the upper groove is divided into a first upper groove, a second upper groove, and an upper bulkhead groove by a pair of upper bulkheads. The upper bulkhead groove is located between the first upper groove and the second upper groove.

[0015] Specifically, the first upper groove and the second upper groove each include an inlet end and an outlet end. The inlet end is open and communicates with an inlet flow path, and the outlet end is blocked from the outlet flow path by a partition wall. Cooling water flowing into the inlet flow path passes through the inlet end and flows into the first upper groove and the second upper groove, then travels along the first upper groove and the second upper groove, and moves between the cooling fins positioned below the first upper groove and the second upper groove by the outlet end blocked by the partition wall.

[0016] Specifically, the upper baffle groove includes an inlet end and an outlet end. The inlet end is blocked from the inlet flow path by a baffle, and the outlet end is open and communicates with the outlet flow path. Cooling water flowing into the inlet flow path is prevented from entering the upper baffle groove by the inlet end of the upper baffle groove that is blocked by the baffle; however, some of the cooling water that has moved between the cooling fins flows into the upper baffle groove, travels along the upper baffle groove, and then passes through the open outlet end to move to the outlet flow path.

[0017] Specifically, in the fin area of ​​the bottom plate, multiple cooling fins are arranged in a single line in one direction.

[0018] Specifically, the top plate includes a first pair of upper bulkheads and a second pair of upper bulkheads. The first pair of upper bulkheads and the second pair of upper bulkheads are formed in upper grooves, and the first upper bulkhead groove between the first pair of upper bulkheads and the second upper bulkhead groove between the second pair of upper bulkheads communicate with the top plate groove.

[0019] Specifically, the upper groove is divided into a first upper groove, a second upper groove, a third upper groove, a first upper bulkhead groove, and a second upper bulkhead groove by a first pair of upper bulkheads and a second pair of upper bulkheads. The first upper bulkhead groove is located between the first upper groove and the second upper groove, and the second upper bulkhead groove is located between the second upper groove and the third upper groove.

[0020] Specifically, the first upper groove, the second upper groove, and the third upper groove each include an inlet end and an outlet end. The inlet end is open and communicates with an inlet flow path, and the outlet end is blocked from the outlet flow path by a partition wall. Cooling water flowing into the inlet flow path passes through the inlet end and flows into the first upper groove, the second upper groove, and the third upper groove, then travels along the first upper groove, the second upper groove, and the third upper groove, and then moves between the cooling fins positioned below the first upper groove, the second upper groove, and the third upper groove by the outlet end blocked by the partition wall.

[0021] Specifically, the first upper baffle groove and the second upper baffle groove include an inlet end and an outlet end. The inlet end is blocked from the inlet flow path by a baffle, and the outlet end is open and communicates with the outlet flow path. Cooling water flowing into the inlet flow path is not allowed to flow into the first upper baffle groove and the second upper baffle groove by the inlet end blocked by the baffle of the first upper baffle groove and the second upper baffle groove. After some of the cooling water moving between the cooling fins flows into the first upper baffle groove and the second upper baffle groove, it travels along the first upper baffle groove and the second upper baffle groove and passes through the open outlet end to move to the outlet flow path.

[0022] The cooling plate of the present invention has the effect of maximizing cooling efficiency.

[0023] In addition, the cooling plate of the present invention minimizes the pressure applied by the cooling water to the cooling fins, thereby minimizing the overall power consumption of the cooling system.

[0024] In addition, the cooling plate of the present invention reduces pressure loss and improves cooling efficiency by distributing the flow rate of cooling water flowing between the cooling plates.

[0025] The more detailed effects of the cooling plate of the present invention are described in the specific details for implementing the invention below.

[0026] FIG. 1 shows a cooling plate according to one embodiment of the present invention.

[0027] Figure 2 is a plan view of the cooling plate shown in Figure 1.

[0028] Figure 3 shows the AA cross-section of Figure 2.

[0029] Figure 4 is a drawing of the top plate of Figure 1 turned upside down.

[0030] Figure 5 shows the bottom plate and cooling fins of Figure 1.

[0031] FIG. 6 shows a cooling plate according to another embodiment of the present invention.

[0032] Figure 7 is a plan view of the cooling plate shown in Figure 6.

[0033] Figure 8 shows the BB cross-section of Figure 7.

[0034] Figures 9 and 10 are drawings of the top plate of Figure 6 turned upside down.

[0035] Figure 11 shows the movement path of the bottom plate, cooling fins, and cooling water of Figure 6.

[0036] FIG. 12 is a cross-sectional view of one side of the cooling plate of FIG. 6.

[0037] Figure 13 shows the path of the cooling water passing through the interior of the cooling plate of Figure 6.

[0038] FIG. 14 is a plan view of a cooling plate according to another embodiment of the present invention.

[0039] Figures 15 and 16 are drawings of the top plate of Figure 14 turned upside down.

[0040] Figure 17 shows the movement path of the bottom plate, cooling fins, and cooling water of Figure 7.

[0041] FIG. 18 is a cross-sectional view of one side of the cooling plate of FIG. 7.

[0042] Figure 19 shows the path of the cooling water passing through the interior of the cooling plate of Figure 14.

[0043] Embodiments of the present invention will be described in more detail below with reference to the attached drawings. Regarding components of the present invention that can be clearly understood and easily reproduced by a person skilled in the art according to the prior art, specific descriptions thereof are omitted in order not to obscure the essence of the present invention.

[0044] The attached drawings are intended only to facilitate understanding of the embodiments disclosed in this specification, and the technical concept disclosed in this specification is not limited by the attached drawings.

[0045] A singular expression includes a plural expression unless the context clearly indicates otherwise.

[0046] Additionally, terms including ordinal numbers, such as first, second, etc., used herein may be used to describe various components, but said components should not be limited by said terms. Such terms are used solely for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be named the second component, and similarly, the second component may be named the first component.

[0047] Hereinafter, a cooling plate according to an embodiment of the present invention will be described.

[0048] The cooling plate of the present invention is a cooling device for removing (dissipating heat) heat generated from circuit components in a printed circuit board, etc., of an electrical and electronic device.

[0049] For example, the cooling plate of the present invention is a cooling device that is attached to the upper surface of a chip, such as a CPU (Central Processing Unit) or GPU (Graphic Processing Unit), which is a high heat source of a server equipped in a data center, and cools the high heat source.

[0050] [Description of the embodiments illustrated in FIGS. 1 to 5]

[0051] The cooling plate (10) includes an upper plate (11) and a lower plate (12).

[0052] The cooling plate (10) is formed by combining the upper plate (11) and the lower plate (12).

[0053] The top plate (11) and the bottom plate (12) form the outer shape of the cooling plate (10). That is, the outer shape of the cooling plate (10) is formed by combining the outer shape of the top plate (11) and the outer shape of the bottom plate (12). The top plate (11) and the bottom plate (12) serve as the case of the cooling plate (10).

[0054] The cooling plate (10) has an internal space (10s).

[0055] Specifically, when the top plate (11) and the bottom plate (12) are combined, an internal space (10s) is formed between the top plate (11) and the bottom plate (12). A cooling fin (121), which will be described later, is placed in the internal space (10s).

[0056] The part where the top plate (11) and the bottom plate (12) are joined is sealed. Accordingly, cooling water is prevented from leaking between the top plate (11) and the bottom plate (12).

[0057] Referring to FIGS. 1 to 5, the top plate (11) of the present invention may be provided in a plate shape having a preset size and a preset thickness. The preset size refers to a size having a length and width that constitute a two-dimensional plane. The width represents the X direction in FIG. 1, the length represents the Y direction in FIG. 1, and the thickness direction of the top plate (11) represents the Z direction in FIG. 1.

[0058] The top plate (11) includes an upper surface (11a), a lower surface (11b), and a side surface (11c). The side surface (11c) is a surface connecting the upper surface (11a) and the lower surface (11b), and is a surface forming the thickness between the upper surface (11a) and the lower surface (11b).

[0059] The upper surface (11a), lower surface (11b), and side surface (11c) of the top plate (11) may include steps, curves, grooves, or holes as needed.

[0060] The top plate (11) has a top plate groove (111).

[0061] The upper plate groove (111) is formed on the lower surface (11b) of the upper plate (11) and is formed by being sunk to a predetermined depth from the lower surface (11b) of the upper plate (11) toward the upper surface (11a).

[0062] To elaborate, the opening of the top plate groove (111) is formed on the lower surface (11b), and the bottom surface of the top plate groove (111) is formed on the upper surface (11a) side (opposite side of the opening). Since the opening of the top plate groove (111) is located at the bottom, the bottom surface of the top plate groove (111) may correspond to the ceiling surface.

[0063] The upper plate groove (111) faces the lower plate (12). Specifically, the lower plate (12) is joined to the lower surface (11b) of the upper plate (11) and covers the upper plate groove (111). That is, the lower plate (12) covers the opening of the upper plate groove (111).

[0064] When the top plate (11) and the bottom plate (12) are combined, the top plate groove (111) becomes the internal space (10s) of the cooling plate (10).

[0065] The top plate groove (111) has a preset size and a preset depth. The preset size refers to a size having a length and width that constitute a two-dimensional plane. The width represents the X direction in FIG. 1, the height represents the Y direction in FIG. 1, and the depth of the top plate groove (111) represents the Z direction in FIG. 1.

[0066] The top plate groove (111) includes a pin area (111a) and an edge area (111b) surrounding the pin area (111a). In other words, the top plate groove (111) can be divided into a pin area (111a) and an edge area (111b). The pin area (111a) is located within the edge area (111b).

[0067] When the top plate (11) and the bottom plate (12) are combined, a plurality of cooling fins (121) are arranged in the fin area (111a), and the edge area (111b) becomes an empty space. The edge area (111b) becomes a channel through which cooling water flows.

[0068] Cooling water flowing into the interior of the upper plate groove (111) through the inlet (112h) passes between the cooling fins (121) and reaches the edge area (111b), and flows along the edge area (111b) to reach the outlet (113h). The cooling water moves to the outside of the cooling plate (10) through the outlet (113h).

[0069] The cooling plate (10) of the present invention is equipped with an inlet (112h) and an outlet (113h).

[0070] The inlet port (112h) is a hole through which cooling water flows into the interior of the cooling plate (10), and the outlet port (113h) is a hole through which cooling water flows out to the exterior of the cooling plate (10).

[0071] According to the first embodiment of the present invention, the upper surface (11a) of the top plate (11) may have a plurality of protrusions (112, 113) formed thereon (see FIG. 1). The protrusions (112, 113) are formed by protruding upward from the upper surface (11a) of the top plate (11) and have a space inside. The exterior of the protrusions (112, 113) may be made of a polyhedron.

[0072] Multiple protrusions (112, 113) include an inlet protrusion (112) and an outlet protrusion (113).

[0073] The entrance protrusion (112) is formed in the center area of ​​the top plate (11) in the horizontal direction (X direction in FIG. 1). The exit protrusion (113) may be formed on one side (e.g., the left side) of the top plate (11) in the horizontal direction (X direction in FIG. 1).

[0074] The inlet protrusion (112) is formed above the inlet passage (112b) (see FIG. 3) described later, and the internal space (112s) of the inlet protrusion (112) communicates with the inlet passage (112b). Also, the inlet port (112h) is formed on one side of the inlet protrusion (112) and penetrates one side of the inlet protrusion (112) to communicate with the internal space (112s) of the inlet protrusion (112).

[0075] The outlet protrusion (113) is formed above the outlet channel (113b) (see FIG. 3) described later, and the internal space (113s) of the outlet protrusion (113) communicates with the outlet channel (113b). Additionally, the outlet port (113h) is formed on one side of the outlet protrusion (113) and penetrates one side of the outlet protrusion (113) to communicate with the internal space (113s) of the outlet protrusion (113).

[0076] The internal space (112s, 113s) of the inlet protrusion (112) and the outlet protrusion (113) may have a volume that gradually decreases as the inlet protrusion (112) and the outlet protrusion (113) protrude in the direction of protrusion. Also, the inlet port (112h) may be formed on the upper side of one side of the inlet protrusion (112), and the outlet port (113h) may be formed on the upper side of one side of the outlet protrusion (113).

[0077] Cooling water flows into the internal space (112s) of the inlet protrusion (112) through the inlet port (112h) and then moves to the upper plate groove (111) via the inlet flow path (112b). After moving between the cooling fins (121) in the upper plate groove (111), the cooling water passes through the edge region (111b) of the upper plate groove (111) and then moves to the outside of the cooling plate (10) of the present invention via the outlet flow path (113b), the internal space (113s) of the outlet protrusion (113), and the outlet port (113h) in sequence.

[0078] According to the second embodiment of the present invention, the aforementioned inlet protrusion (112) and outlet protrusion (113) are not provided, and an inlet and an outlet may be formed on the top plate.

[0079] In the second embodiment, the inlet and outlet may be formed at the locations of the aforementioned inlet protrusion (112) and outlet protrusion (113).

[0080] The inlet and outlet are formed from the upper surface (11a) of the top plate (11) toward the lower surface (11b).

[0081] The inlet is connected to the inlet passage (112b), and the outlet is connected to the outlet passage (113b). The inlet passage (112b) and the outlet passage (113b) are connected to the upper plate groove (111).

[0082] Meanwhile, the cooling plate (10) of the present invention is provided with an inlet flow path (112b) and an outlet flow path (113b).

[0083] The inlet channel (112b) and outlet channel (113b) are formed in the top plate (11) and are spaces through which cooling water flows.

[0084] The inlet passage (112b) communicates with the internal space (112s) (first embodiment) or the inlet (second embodiment) of the inlet protrusion (112), and the outlet passage (113b) communicates with the internal space (113s) (first embodiment) or the outlet (second embodiment) of the outlet protrusion (113). Accordingly, the inlet passage (112b) is formed on the side of the inlet protrusion (112) or the inlet, and the outlet passage (113b) is formed on the side of the outlet protrusion (113) or the outlet.

[0085] An inlet channel (112b) is formed in the center area of ​​the top plate groove (111) in the horizontal direction of the top plate (11) (X direction in FIG. 1). An outlet channel (113b) may be formed on one side (e.g., the left side) of the top plate groove (111) in the horizontal direction of the top plate (11) (X direction in FIG. 1) (see FIG. 1 to 3).

[0086] The inlet channel (112b) and the outlet channel (113b) may have a preset width in one direction and a preset length in a direction horizontally orthogonal to the one direction. The one direction is indicated by the X direction in FIG. 2, and the direction horizontally orthogonal to the one direction is indicated by the Y direction in FIG. 2.

[0087] And, the inlet channel (112b) and the outlet channel (113b) can be formed by being sunk to a predetermined depth from the bottom surface of the top plate groove (111) toward the top surface (11a) (in the Z direction in FIG. 3).

[0088] Below the exit channel (113b), the edge area (111b) of the top plate groove (111) is located.

[0089] The top plate (11) is provided with a pair of internal partitions (111c) (see FIG. 4).

[0090] A pair of internal partitions (111c) are formed in the upper plate groove (111).

[0091] The inner partition (111c) is formed with a predetermined length (height) from the bottom surface of the top plate groove (111) toward the opening of the top plate groove (111). The height of the inner partition (111c) may be equal to the depth of the top plate groove (111).

[0092] An internal partition (111c) is formed between the pin area (111a) and the edge area (111b) to partition the pin area (111a) and the edge area (111b). However, the internal partition (111c) is not formed in all places between the pin area (111a) and the edge area (111b).

[0093] Specifically, a pair of internal partitions (111c) are formed only in the horizontal direction (X direction in FIG. 4) of the upper plate groove (111) and are not formed in the vertical direction (Y direction in FIG. 4) of the upper plate groove (111).

[0094] To elaborate, a pair of internal partitions (111c) are formed between the pin area (111a) and the edge area (111b) corresponding to the horizontal direction of the top plate groove (111), and are not formed between the pin area (111a) and the edge area (111b) corresponding to the vertical direction of the top plate groove (111).

[0095] A pair of internal partitions (111c) are spaced apart by the distance of the pin area (111a) corresponding to the vertical direction of the top plate groove (111).

[0096] The inner partition (111c) has a predetermined length in the horizontal direction of the upper plate groove (111). To elaborate, the inner partition (111c) is formed to the length of the pin area (111a) corresponding to the horizontal direction of the upper plate groove (111) within the pin area (111a) of the upper plate groove (111).

[0097] The internal partition (111c) blocks the cooling water flowing into the upper plate groove (111) from flowing directly to the edge area (111b) of the upper plate groove (111) without passing between the cooling fins (121) described later.

[0098] A pair of internal partitions (111c) allow the entire amount of cooling water flowing into the upper plate groove (111) to pass between the cooling fins (121), thereby maximizing the cooling efficiency of the cooling plate (10).

[0099] In the embodiments illustrated in FIGS. 1 to 5, the bottom plate (12) of the present invention may be provided in a plate shape having a preset size and a preset thickness. The preset size refers to a size having a length and width that constitute a two-dimensional plane. The width represents the X direction in FIG. 5, the length represents the Y direction in FIG. 5, and the thickness direction of the cooling plate (10) represents the Z direction in FIG. 5.

[0100] The bottom plate (12) includes an upper surface, a lower surface, and a side surface. The side surface is a surface connecting the upper surface and the lower surface, and is a surface forming the thickness between the upper surface and the lower surface.

[0101] The upper, lower, and side surfaces of the bottom plate (12) may include steps, curves, and grooves as needed.

[0102] The upper surface of the lower plate (12) faces the lower surface (11b) of the upper plate (11). The upper surface of the lower plate (12) covers the opening of the upper plate groove (111).

[0103] The bottom plate (12) is placed in the bottom plate groove (11b1) formed on the lower surface (11b) of the top plate (11).

[0104] The lower plate groove (11b1) is a groove that is recessed to a predetermined depth from the lower surface (11b) of the upper plate (11) toward the upper surface (11a). The overall shape of the edge of the lower plate groove (11b1) corresponds to the overall shape of the edge of the lower plate (12). Accordingly, the lower plate (12) is inserted into the lower plate groove (11b1) of the upper plate (11).

[0105] Cooling fins (121) are arranged or formed on the upper surface of the lower plate (12), and the lower surface of the lower plate (12) contacts the upper surface of a chip such as a CPU or GPU.

[0106] Referring to FIGS. 2 and FIGS. 5, the bottom plate (12) includes a pin area (12a) corresponding to the pin area (111a) of the top plate groove (111), and also includes an edge area (12b) corresponding to the edge area (111b) of the top plate groove (111). The pin area (12a) and the edge area (12b) are formed on the upper surface of the bottom plate (12).

[0107] The pin area (12a) of the bottom plate (12) is located below the pin area (111a) of the top plate groove (111), and the edge area (12b) of the bottom plate (12) is located below the edge area (111b) of the top plate groove (111). Accordingly, the pin area (12a) of the bottom plate (12) is located within the edge area (12b).

[0108] A plurality of cooling fins (121) are arranged or formed in the fin area (12a) of the bottom plate (12).

[0109] The edge area (12b) of the bottom plate (12) is an empty space and becomes a channel through which coolant flows.

[0110] The internal space (10s) of the cooling plate (10) of the present invention may be divided into a fin area and an edge area. The fin area of ​​the cooling plate (10) is formed by combining the fin area (111a) of the upper plate groove (111) and the fin area (12a) of the lower plate (12), and the edge area of ​​the cooling plate (10) is formed by combining the edge area (111b) of the upper plate groove (111) and the edge area (12b) of the lower plate (12).

[0111] The cooling plate (10) of the present invention is equipped with a plurality of cooling fins (121).

[0112] The cooling fin (121) can be connected to the bottom plate (12) or formed on the bottom plate (12).

[0113] The cooling fin (121) is formed by extending upward from one side (e.g., the upper side) of the lower plate (12) for a predetermined length.

[0114] The cooling fins (121) can be formed, for example, by a skiving method.

[0115] Referring to FIGS. 2, FIGS. 3, and FIGS. 5, the cooling fin (121) is formed in a plate shape having a preset size and a preset thickness. The preset size refers to a size having a length and width that constitute a two-dimensional plane. The width represents the X direction in FIG. 5, the height represents the Z direction in FIG. 5, and the thickness direction of the cooling fin (121) represents the Y direction in FIG. 5.

[0116] The horizontal length of the cooling fin (121) can be formed to be longer than the vertical length.

[0117] The vertical length (height of the cooling fin (121)) of the cooling fin (121) may be equal to the depth of the upper plate groove (111). Accordingly, the cooling water flowing into the upper plate groove (111) cannot flow over the cooling fin (121) but moves through the spaces between the cooling fins (121) and the edge area (111b).

[0118] The thickness of the cooling fins (121) may be the same or different.

[0119] Additionally, the spacing between the cooling fin (121) and the adjacent cooling fin (121) may be the same or different.

[0120] Additionally, for example, the distance between the cooling fins (121) in area A may be different from the distance between the cooling fins (121) in area B. In this case, the distance between the cooling fins (121) in area A may be constant, and the distance between the cooling fins (121) in area B may also be constant.

[0121] In the embodiments illustrated in FIGS. 1 to 5, the 'horizontal length direction of the cooling fin (121)' can be briefly referred to as the 'length direction of the cooling fin (121)' and indicates the X direction in the drawings.

[0122] In the fin area (12a) of the bottom plate (12), a plurality of cooling fins (121) can be arranged in a plurality of groups (121a, 121b).

[0123] That is, the cooling plate (10) of the present invention may be provided with a plurality of groups composed of a plurality of cooling fins (121).

[0124] Multiple groups (121a, 121b) may include a first group (121a) and a second group (121b). The first group (121a) and the second group (121b) are placed between a pair of internal partitions (111c).

[0125] Each of the first group (121a) and the second group (121b) is composed of a plurality of cooling fins (121).

[0126] In the first group (121a) and the second group (121b), each of the plurality of cooling fins (121) is arranged in one direction. The one direction represents the transverse direction (length direction) of the cooling fins (121).

[0127] To elaborate, the cooling fin (121) is arranged so that the horizontal side of the cooling fin (121) is parallel to the X direction in FIGS. 2 to 5.

[0128] The cooling fin (121) has a preset length in the horizontal direction of the top plate groove (111).

[0129] The longitudinal direction of the cooling fin (121) may be parallel to the longitudinal direction of the internal partition (111c).

[0130] In the first group (121a) and the second group (121b), a plurality of cooling fins (121) are arranged in a line in a different direction. The other direction represents a direction that is horizontally orthogonal to the direction and represents the thickness direction of the cooling fins (121) (e.g., the Y direction in FIGS. 2 to 5).

[0131] The first group (121a) and the second group (121b) are arranged side by side in one direction (e.g., the X direction in FIGS. 2 to 5) and spaced apart by a certain distance.

[0132] The space (121s) between the first group (121a) and the second group (121b) is located within the pin area (12a) of the bottom plate (12).

[0133] The inlet passage (112b) of the top plate (11) is positioned above the area (121s) separated from the first group (121a) and the second group (121b). Accordingly, the cooling water introduced into the inlet passage (112b) through the inlet port (112h) flows to the area (121s) separated from the first group (121a) and the second group (121b).

[0134] And the cooling water flows into the first group (121a) and the second group (121b), and flows between the multiple cooling fins (121) in the first group (121a) and the second group (121b).

[0135] Cooling water in the space (121s) separated from the first group (121a) and the second group (121b) cannot move directly to the edge region (111b) by means of a pair of internal partitions (111c), but flows between the multiple cooling fins (121) in the first group (121a) and the second group (121b) and then moves to the edge region (111b) (see FIG. 4 and FIG. 5).

[0136] Accordingly, the cooling water flowing into the space (121s) where the first group (121a) and the second group (121b) are separated passes entirely between the cooling fins (121), so the cooling efficiency of the cooling plate (10) is improved.

[0137] Then, the cooling water passes through the edge area (111b) of the upper plate groove (111), the outlet channel (113b), the internal space (113s) of the outlet protrusion (113), and the outlet port (113h) in sequence, and moves to the outside of the cooling plate (10) of the present invention.

[0138] The inlet (112h) may be positioned in the middle of the spaced-apart location (121s) between the first group (121a) and the second group (121b). The middle of the spaced-apart location (121s) represents the middle in the Y direction of the pin area (111a) shown in FIG. 2.

[0139] Below the separated portion (121s) of the first group (121a) and the second group (121b), a high-heat circuit component (e.g., a chip such as a CPU or GPU) may be placed, or a portion of the circuit component that generates high heat may be placed.

[0140] Accordingly, the cooling water coming out of the inlet (112h) strikes the lower plate (12) on the high-heat circuit component or the part where high heat is generated, so the cooling efficiency of the cooling plate (10) can be further increased.

[0141] The horizontal length of the cooling fin (121) in the first group (121a) and the horizontal length of the cooling fin (121) in the second group (121b) may be the same or different. Accordingly, the positions of the separated part (121s), the inlet protrusion (112), and the water inlet (112h) of the first group (121a) and the second group (121b) may be changed.

[0142] Meanwhile, in an embodiment (not shown) in which there are three or more groups composed of cooling fins (121), there may be two or more spaced-apart places (121s) between groups, and an inlet protrusion (112) and / or an inlet (112h) may be disposed at each spaced-apart place (121s).

[0143] [Description of the embodiments illustrated in FIGS. 6 to 19]

[0144] The cooling plate (20) includes an upper plate (21) and a lower plate (22).

[0145] The cooling plate (20) is formed by combining the upper plate (21) and the lower plate (22).

[0146] The top plate (21) and the bottom plate (22) form the outer shape of the cooling plate (20). That is, the outer shape of the cooling plate (20) is formed by combining the outer shape of the top plate (21) and the outer shape of the bottom plate (22). The top plate (21) and the bottom plate (22) serve as the case of the cooling plate (20).

[0147] The cooling plate (20) has an internal space (20s).

[0148] Specifically, when the top plate (21) and the bottom plate (22) are combined, an internal space (20s) is formed between the top plate (21) and the bottom plate (22). A cooling fin (221), which will be described later, is placed in the internal space (20s).

[0149] The part where the top plate (21) and the bottom plate (22) are joined is sealed. Accordingly, cooling water is prevented from leaking between the top plate (21) and the bottom plate (22).

[0150] Referring to FIGS. 6 through 13, the top plate (21) of the present invention may be provided in a plate shape having a preset size and a preset thickness. The preset size refers to a size having a length and width that constitute a two-dimensional plane. The width represents the X direction in FIG. 6, the length represents the Y direction in FIG. 6, and the thickness direction of the top plate (21) represents the Z direction in FIG. 6.

[0151] The top plate (21) includes an upper surface (21a), a lower surface (21b), and a side surface (21c). The side surface (21c) is a surface connecting the upper surface (21a) and the lower surface (21b), and is a surface forming the thickness between the upper surface (21a) and the lower surface (21b).

[0152] The upper surface (21a), lower surface (21b), and side surface (21c) of the top plate (21) may include steps, curves, grooves, or holes as needed.

[0153] The top plate (21) has a top plate groove (211).

[0154] The upper plate groove (211) is formed on the lower surface (21b) of the upper plate (21) and is formed by being sunk to a predetermined depth from the lower surface (21b) of the upper plate (21) toward the upper surface (21a).

[0155] To elaborate, the opening of the top plate groove (211) is formed on the lower surface (21b), and the bottom surface of the top plate groove (211) is formed on the upper surface (21a) side (opposite side of the opening). Since the opening of the top plate groove (211) is located at the bottom, the bottom surface of the top plate groove (211) may correspond to the ceiling surface.

[0156] The upper plate groove (211) faces the lower plate (22). Specifically, the lower plate (22) is joined to the lower surface (21b) of the upper plate (21) and covers the upper plate groove (211). That is, the lower plate (22) covers the opening of the upper plate groove (211).

[0157] When the top plate (21) and the bottom plate (22) are combined, the top plate groove (211) becomes the internal space (20s) of the cooling plate (20).

[0158] The top plate groove (211) has a preset size and a preset depth. The preset size refers to a size having a length of the width and height that constitute a two-dimensional plane. In FIGS. 6 to 8, the width represents the X direction, the height represents the Y direction, and the depth of the top plate groove (211) represents the Z direction.

[0159] The top plate groove (211) includes a pin area (211a) and an edge area (211b) surrounding the pin area (211a). In other words, the top plate groove (211) can be divided into a pin area (211a) and an edge area (211b). The pin area (211a) is located within the edge area (211b).

[0160] When the top plate (21) and the bottom plate (22) are combined, a plurality of cooling fins (221) are arranged in the fin area (211a), and the edge area (211b) becomes an empty space. The edge area (211b) becomes a channel through which cooling water flows.

[0161] Cooling water flowing into the interior of the upper plate groove (211) through the inlet (212h) passes between the cooling fins (221) and reaches the edge area (211b), and flows along the edge area (211b) to reach the outlet (213h). The cooling water moves to the outside of the cooling plate (20) through the outlet (213h).

[0162] The cooling plate (20) of the present invention is equipped with an inlet (212h) and an outlet (213h).

[0163] The inlet port (212h) is a hole through which cooling water flows into the interior of the cooling plate (20), and the outlet port (213h) is a hole through which cooling water flows out to the exterior of the cooling plate (20).

[0164] According to a third embodiment of the present invention, a plurality of protrusions (212, 213) may be formed on the upper surface (21a) of the top plate (21) (see FIG. 6). The protrusions (212, 213) are formed by protruding upward from the upper surface (21a) of the top plate (21) and have a space inside. The exterior of the protrusions (212, 213) may be made of a polyhedron.

[0165] Multiple protrusions (212, 213) include an inlet protrusion (212) and an outlet protrusion (213).

[0166] The entrance protrusion (212) and the exit protrusion (213) are formed on both sides of the top plate (21) in the horizontal direction (X direction in FIG. 6) of the top plate (21). For example, the entrance protrusion (212) may be formed on the right side in the horizontal direction of the top plate (21), and the exit protrusion (213) may be formed on the left side.

[0167] The inlet protrusion (212) is formed above the inlet passage (212b) described later (see FIG. 8), and the internal space (212s) of the inlet protrusion (212) communicates with the inlet passage (212b). Additionally, the inlet port (212h) is formed on one side of the inlet protrusion (212) and penetrates one side of the inlet protrusion (212) to communicate with the internal space (212s) of the inlet protrusion (212).

[0168] The outlet protrusion (213) is formed above the outlet flow path (213b) (see FIG. 8) described later, and the internal space (213s) of the outlet protrusion (213) communicates with the outlet flow path (213b). Additionally, the outlet port (213h) is formed on one side of the outlet protrusion (213) and penetrates one side of the outlet protrusion (213) to communicate with the internal space (213s) of the outlet protrusion (213).

[0169] The internal space (212s, 213s) of the inlet protrusion (212) and the outlet protrusion (213) may have a volume that gradually decreases as the inlet protrusion (212) and the outlet protrusion (213) protrude in the direction of protrusion. Also, the inlet port (212h) may be formed on the upper side of one side of the inlet protrusion (212), and the outlet port (213h) may be formed on the upper side of one side of the outlet protrusion (213).

[0170] Cooling water flows into the internal space (212s) of the inlet protrusion (212) through the inlet port (212h), and then moves to the upper groove (214) described later via the inlet flow path (212b). Then, the cooling water in the upper groove (214) moves between the cooling fins (221) in the upper plate groove (211), passes through the edge region (211b) of the upper plate groove (211), and then moves to the outside of the cooling plate (20) of the present invention by passing through the outlet flow path (213b), the internal space (213s) of the outlet protrusion (213), and the outlet port (213h) in sequence.

[0171] According to the fourth embodiment of the present invention, the aforementioned inlet protrusion (212) and outlet protrusion (213) are not provided, and an inlet and an outlet may be formed on the top plate.

[0172] In the fourth embodiment, the inlet and outlet may be formed at the locations of the aforementioned inlet protrusion (212) and outlet protrusion (213).

[0173] The inlet and outlet are formed from the upper surface (21a) of the top plate (21) toward the lower surface (21b).

[0174] The inlet is connected to the inlet channel (212b), and the outlet is connected to the outlet channel (213b). The inlet channel (212b) and the outlet channel (213b) may be connected to the upper plate groove (211) and / or the upper groove (214).

[0175] Meanwhile, the cooling plate (20) of the present invention is equipped with an inlet flow path (212b) and an outlet flow path (213b).

[0176] The inlet channel (212b) and outlet channel (213b) are formed in the top plate (21) and are spaces through which cooling water flows.

[0177] The inlet passage (212b) communicates with the internal space (212s) (third embodiment) or the inlet (fourth embodiment) of the inlet protrusion (212), and the outlet passage (213b) communicates with the internal space (213s) (third embodiment) or the outlet (fourth embodiment) of the outlet protrusion (213). Accordingly, the inlet passage (212b) is formed on the side of the inlet protrusion (212) or the inlet, and the outlet passage (213b) is formed on the side of the outlet protrusion (213) or the outlet.

[0178] The inlet channel (212b) and the outlet channel (213b) are formed on both sides of the upper plate groove (211) in the horizontal direction (X direction in FIG. 8) of the upper plate groove (211). For example, the inlet channel (212b) may be formed on the right side in the horizontal direction of the upper plate groove (211), and the outlet channel (213b) may be formed on the left side.

[0179] The inlet channel (212b) and the outlet channel (213b) may have a preset width in one direction and a preset length in a direction horizontally orthogonal to the one direction. The one direction is indicated by the X direction in FIG. 8, and the direction horizontally orthogonal to the one direction is indicated by the Y direction in FIG. 9.

[0180] And, the inlet channel (212b) can be formed by being recessed to a predetermined depth from the upper surface (21a) of the top plate (21) toward the lower surface (21b) (in the Z direction in FIG. 8), and the outlet channel (213b) can be formed by being recessed to a predetermined depth from the bottom surface of the top plate groove (211) toward the upper surface (21a) (in the Z direction in FIG. 8).

[0181] Below the exit channel (213b), the edge area (211b) of the top plate groove (211) is located.

[0182] The top plate (21) is provided with an upper groove (214). The upper groove (214) is a channel through which cooling water flows. FIGS. 9 and FIGS. 10 are drawings of the top plate (21) of FIG. 6 turned upside down so that the upper groove (214) is visible. The lower surface (21b) of the top plate (21) faces upward. In FIG. 9, the left side of the top plate (21) is the side with the water outlet (213h), and the right side is the side with the water inlet (212h). Also, in FIG. 10, the left side of the top plate (21) is the side with the water inlet (212h), and the right side is the side with the water outlet (213h).

[0183] The upper groove (214) is formed in the upper groove (211) and communicates with the upper groove (211).

[0184] The upper groove (214) is formed on the bottom surface of the upper groove (211) and is formed by being sunk to a predetermined depth from the bottom surface of the upper groove (211) toward the upper surface (21a).

[0185] To elaborate, the opening of the upper groove (214) is formed on the bottom surface of the upper plate groove (211), and the bottom surface of the upper groove (214) is formed on the upper surface (21a) side (opposite side of the opening). Since the opening of the upper groove (214) is located at the bottom, the bottom surface of the upper groove (214) may correspond to the ceiling surface.

[0186] With the upper surface (21a) of the top plate (21) facing upward and the lower surface (21b) facing downward (see FIG. 8), the upper groove (214) is positioned on top of the top plate groove (211).

[0187] When the top plate (21) and the bottom plate (22) are combined, cooling fins (221) are placed in the top plate groove (211), and cooling water flows into the upper groove (214) located above the top plate groove (211). The cooling water flows downward from the upper groove (214) and flows between the cooling fins (221).

[0188] When the upper plate (21) and the lower plate (22) are combined, the upper groove (214) becomes the internal space (20s) of the cooling plate (20).

[0189] The upper groove (214) has a preset size and a preset depth. The preset size refers to a size having a length and width that constitute a two-dimensional plane. The width represents the X direction in FIG. 9, the height represents the Y direction in FIG. 9, and the depth of the upper groove (211) represents the Z direction in FIG. 9.

[0190] The upper groove (214) is formed on the upper portion of the pin area (211a) of the upper groove (211) and is not formed on the upper portion of the edge area (211b) of the upper groove (211). Accordingly, the cooling water flowing into the upper groove (214) moves toward the cooling fin (221) in the pin area (211a) and does not move directly from the upper groove (214) to the edge area (211b). This is to allow a large amount of cooling water to come into contact with the cooling fin (221).

[0191] According to one embodiment of the present invention, the top plate (21) has a pair of upper partitions (215).

[0192] FIGS. 6 to 13 show an embodiment in which one pair of upper partitions (215) is formed.

[0193] A pair of upper partitions (215) are formed in the upper groove (214).

[0194] The upper partition (215) is formed with a predetermined length (height) from the bottom surface of the upper groove (214) toward the upper plate groove (211). The height of the upper partition (215) may be equal to the depth of the upper groove (214).

[0195] A pair of upper partitions (215) are formed with a preset length in the horizontal direction (X direction in FIG. 9) of the upper groove (214). The preset length may be the same as the horizontal length of the upper groove (214).

[0196] And, a pair of upper partitions (215) are formed in the central area in the vertical direction (Y direction in FIG. 9) of the upper groove (214).

[0197] A pair of upper bulkheads (215) consists of a first upper bulkhead (215a) and a second upper bulkhead (215b).

[0198] The first upper partition (215a) and the second upper partition (215b) are spaced apart by a predetermined distance in the vertical direction (Y direction in FIG. 9) of the upper groove (214). Accordingly, cooling water flows between the first upper partition (215a) and the second upper partition (215b).

[0199] The space between a pair of upper partitions (215) (first upper partition (215a) and second upper partition (215b)) among the upper grooves (214) can be named an 'upper partition groove (214c)'.

[0200] The upper bulkhead groove (214c) is connected to the upper plate groove (211).

[0201] The upper groove (214) can be divided into three regions by a pair of upper partitions (215).

[0202] Specifically, the upper groove (214) may be divided into a first upper groove (214a), a second upper groove (214b), and an upper partition groove (214c). The upper partition groove (214c) is located between the first upper groove (214a) and the second upper groove (214b).

[0203] A first upper partition (215a) is located between the first upper groove (214a) and the upper partition groove (214c), and a second upper partition (215b) is located between the upper partition groove (214c) and the second upper groove (214b).

[0204] To elaborate, in the upper groove (214), the first upper groove (214a) and the second upper groove (214b) are positioned on one side and the other side based on a pair of upper partitions (215). The one side and the other side point opposite each other in the vertical direction (Y direction in FIGS. 6 to 10) of the upper groove (214).

[0205] The first upper groove (214a) is positioned on one side of the upper groove (214), and the second upper groove (214b) is positioned on the other side of the upper groove (214).

[0206] The two ends of the first upper groove (214a) and the second upper groove (214b) are described (see FIG. 9 and FIG. 10).

[0207] Each of the first upper groove (214a) and the second upper groove (214b) represents an inlet end (214a1, 214b1) and an outlet end (214a2, 214b2).

[0208] The inlet end (214a1, 214b1) represents an end located on the inlet flow path (212b), and the outlet end (214a2, 214b2) represents an end located on the outlet flow path (213b).

[0209] The inlet end portions (214a1, 214b1) are opened. Accordingly, the inlet end portions (214a1, 214b1) of the first upper groove (214a) and the second upper groove (214b), respectively, are connected to the inlet passage (212b), and the cooling water flowing into the inlet passage (212b) passes through the opened inlet end portions (214a1, 214b1) and flows into the first upper groove (214a) and the second upper groove (214b).

[0210] A bulkhead is formed at the outlet end (214a2, 214b2). The bulkhead may be named an "outlet bulkhead." The drawing reference numeral of the outlet bulkhead is to be the same as the drawing reference numeral of the outlet end (214a2, 214b2).

[0211] The exit partition (214a2, 214b2) is formed with a predetermined length (height) from the bottom surface of the upper groove (214) toward the upper plate groove (211). The height of the exit partition (214a2, 214b2) may be equal to the depth of the upper groove (214).

[0212] The exit partition (214a2, 214b2) is formed with a preset length in the vertical direction (Y direction in FIG. 9) of the upper groove (214).

[0213] To elaborate, the exit partition (214a2) formed in the first upper groove (214a) is formed in the vertical direction of the upper groove (214) to the width of the first upper groove (214a) and blocks the first upper groove (214a).

[0214] And, the exit partition (214b2) formed in the second upper groove (214b) is formed in the vertical direction of the upper groove (214) to the width of the second upper groove (214b) and blocks the second upper groove (214b).

[0215] The outlet ends (214a2, 214b2) of the first upper groove (214a) and the second upper groove (214b) are blocked (not in communication) with the outlet flow path (213b) by the outlet partition (214a2, 214b2).

[0216] Accordingly, the cooling water flowing into the inlet end (214a1, 214b1) of the first upper groove (214a) and the second upper groove (214b) through the inlet channel (212b) moves along the transverse direction of the upper groove (214) and is blocked by the outlet partition (214a2, 214b2) formed at the outlet end (214a2, 214b2) of the first upper groove (214a) and the second upper groove (214b), and moves between the cooling fins (221) positioned below the first upper groove (214a) and the second upper groove (214b). All the cooling water in the first upper groove (214a) and the second upper groove (214b) moves toward the cooling fins (221).

[0217] The two ends of the upper bulkhead groove (214c) are described.

[0218] The two ends of the upper bulkhead groove (214c) represent the inlet end (214c1) and the outlet end (214c2).

[0219] The inlet end (214c1) represents the end located on the inlet channel (212b), and the outlet end (214c2) represents the end located on the outlet channel (213b).

[0220] A bulkhead is formed at the entrance end (214c1). The bulkhead may be named an "entrance bulkhead." The entrance bulkhead may be part of the side of the top plate groove (211) as shown in FIG. 9. The reference numeral of the entrance bulkhead is to be the same as the reference numeral of the entrance end (214c2).

[0221] According to an embodiment of the present invention, the inlet partition (214c1) may be formed with a predetermined length (height) from the bottom surface of the upper partition groove (214c) toward the top plate groove (211). The height of the inlet partition (214c1) may be equal to the depth of the upper partition groove (214c).

[0222] The entrance partition (214c1) is formed from the first upper partition (215a) to the second upper partition (215b) in the vertical direction (Y direction in FIG. 9) of the upper groove (214).

[0223] To elaborate, the entrance partition (214c1) formed in the upper partition groove (214c) is formed in the vertical direction of the upper groove (214) to the width of the upper partition groove (214c) and blocks the upper partition groove (214c).

[0224] The inlet side end (214c1) of the upper bulkhead groove (214c) is blocked (not in communication) by the inlet bulkhead (214c1) with the inlet passage (212b).

[0225] Accordingly, the cooling water flowing into the inlet channel (212b) cannot flow into the upper partition wall groove (214c) by the inlet partition wall (214c1) formed at the inlet end (214c1) of the upper partition wall groove (214c).

[0226] Meanwhile, the outlet end (214c2) of the upper bulkhead groove (214c) is opened. Accordingly, the outlet end (214c2) communicates with the outlet flow path (213b), and the cooling water flowing into the upper bulkhead groove (214c) passes through the opened outlet end (214c2) and moves to the outlet flow path (213b).

[0227] The top plate (21) of the embodiment shown in FIG. 6 does not have an internal partition (111c) provided in the top plate (11) of the embodiment shown in FIG. 1.

[0228] In the embodiments illustrated in FIGS. 6 to 19, the bottom plate (22) of the present invention may be provided in a plate shape having a preset size and a preset thickness. The preset size refers to a size having a length and width that constitute a two-dimensional plane. The width represents the X direction in FIG. 11, the length represents the Y direction in FIG. 11, and the thickness direction of the cooling plate (20) represents the Z direction in FIG. 11.

[0229] The bottom plate (22) includes an upper surface, a lower surface, and a side surface. The side surface is a surface connecting the upper surface and the lower surface, and is a surface forming the thickness between the upper surface and the lower surface.

[0230] The upper, lower, and side surfaces of the lower plate (22) may include steps, curves, and grooves as needed.

[0231] The upper surface of the lower plate (22) faces the lower surface (21b) of the upper plate (21). The upper surface of the lower plate (22) covers the opening of the upper plate groove (211).

[0232] The bottom plate (22) is placed in the bottom plate groove (21b1) formed on the lower surface (21b) of the top plate (21).

[0233] The lower plate groove (21b1) is a groove that is recessed to a predetermined depth from the lower surface (21b) of the upper plate (21) toward the upper surface (21a). The overall shape of the edge of the lower plate groove (21b1) corresponds to the overall shape of the edge of the lower plate (22). Accordingly, the lower plate (22) is inserted into the lower plate groove (21b1) of the upper plate (21).

[0234] Cooling fins (221) are arranged or formed on the upper surface of the lower plate (22), and the lower surface of the lower plate (22) contacts the upper surface of a chip such as a CPU or GPU.

[0235] Referring to FIG. 7 and FIG. 11, the bottom plate (22) includes a pin area (22a) corresponding to the pin area (211a) of the top plate groove (211), and also includes an edge area (22b) corresponding to the edge area (211b) of the top plate groove (211). The pin area (22a) and the edge area (22b) are formed on the upper surface of the bottom plate (22).

[0236] The pin area (22a) of the bottom plate (22) is located below the pin area (211a) of the top plate groove (211), and the edge area (22b) of the bottom plate (22) is located below the edge area (211b) of the top plate groove (211). Accordingly, the pin area (22a) of the bottom plate (22) is located within the edge area (22b).

[0237] A plurality of cooling fins (221) are arranged or formed in the fin area (22a) of the bottom plate (22).

[0238] The edge area (22b) of the bottom plate (22) is an empty space and becomes a channel through which coolant flows.

[0239] The internal space (20s) of the cooling plate (20) of the present invention may be divided into a fin area and an edge area. The fin area of ​​the cooling plate (20) is formed by combining the fin area (211a) of the upper plate groove (211) and the fin area (22a) of the lower plate (22), and the edge area of ​​the cooling plate (20) is formed by combining the edge area (211b) of the upper plate groove (211) and the edge area (22b) of the lower plate (22).

[0240] The cooling plate (20) of the present invention is equipped with a plurality of cooling fins (221).

[0241] The cooling fin (221) can be connected to the bottom plate (22) or formed on the bottom plate (22).

[0242] The cooling fin (221) is formed by extending upward from one side (e.g., the upper side) of the lower plate (22) for a predetermined length.

[0243] The cooling fins (221) can be formed, for example, by a skiving method.

[0244] Referring to FIGS. 7, 8, and 11, the cooling fin (221) is formed in a plate shape having a preset size and a preset thickness. The preset size refers to a size having a length and width that constitute a two-dimensional plane. The width represents the Y direction in FIG. 11, the length represents the Z direction in FIG. 11, and the thickness direction of the cooling fin (221) represents the X direction in FIG. 11.

[0245] The horizontal length of the cooling fin (221) can be formed to be longer than the vertical length.

[0246] The vertical length (height of the cooling fin (221)) of the cooling fin (221) may be equal to the depth of the upper plate groove (211). Accordingly, the cooling water flowing from the upper groove (214) into the upper plate groove (211) flows between the cooling fins (221). Then, the cooling water moves toward the outlet (213h) through the edge area (211b) and the upper partition groove (214c).

[0247] In the embodiments illustrated in FIGS. 6 to 19, the 'horizontal length direction of the cooling fin (221)' can be briefly referred to as the 'length direction of the cooling fin (221)' and represents the Y direction in the drawings.

[0248] In the embodiments illustrated in FIGS. 6 to 19, the cooling fins (221) are arranged such that the longitudinal direction of the cooling fins (221) is parallel to the longitudinal direction (Y direction in FIG. 11) of the bottom plate (22).

[0249] In the fin area (22a) of the bottom plate (22), a plurality of cooling fins (221) are arranged in a line in one direction. The one direction represents the thickness direction of the cooling fins (221), that is, the horizontal direction of the bottom plate (22) (e.g., the X direction in FIG. 11).

[0250] Cooling water flows between the multiple cooling fins (221).

[0251] Each of the plurality of cooling fins (221) is spaced apart in one direction from the adjacent cooling fin (221). The spacing between the cooling fin (221) and the adjacent cooling fin (221) may be the same or different.

[0252] Additionally, for example, the distance between the cooling fins (221) in area A may be different from the distance between the cooling fins (221) in area B. In this case, the distance between the cooling fins (221) in area A may be constant, and the distance between the cooling fins (221) in area B may also be constant.

[0253] Additionally, depending on the embodiment, the thickness of the plurality of cooling fins (221) may be the same or different.

[0254] The path through which the coolant flows is described below (see FIGS. 11 to 13). The description is based on an embodiment in which an inlet protrusion (212) and an outlet protrusion (213) are formed.

[0255] Cooling water flows into the internal space (212s) of the inlet protrusion (212) through the inlet port (212h) (W1), and then moves into the interior of the first upper groove (214a) and the second upper groove (214b) by passing through the inlet channel (212b) and the inlet end (214a1) of the first upper groove (214a) and the inlet end (214b1) of the second upper groove (214b) (W2, W3). At this time, the cooling water in the inlet channel (212b) cannot move into the interior of the upper partition groove (214c) because the inlet end (214c1) of the upper partition groove (214c) is blocked by the partition.

[0256] Cooling water (W2, W3) that has moved into the interior of the first upper groove (214a) and the second upper groove (214b) moves along the horizontal direction (X direction in FIG. 11) of the upper groove (214), and because the outlet end (214a2) of the first upper groove (214a) and the outlet end (214b2) of the second upper groove (214b) are blocked by a partition, it moves to the upper plate groove (211) through an opening located at the bottom of the upper groove (214).

[0257] A plurality of cooling fins (221) are arranged in the fin area (211a) of the upper plate groove (211). As previously described, the longitudinal direction (Y direction in FIG. 11) of the cooling fins (221) is parallel to the longitudinal direction of the upper groove (214).

[0258] Cooling water moving in the horizontal direction (X direction in FIG. 11) from the upper groove (214) moves to the fin area (211a) of the upper plate groove (211) and flows between the plurality of cooling fins (221), and then moves along the longitudinal direction (Y direction in FIG. 11) of the plurality of cooling fins (221).

[0259] Some of the cooling water moving between the plurality of cooling fins (221) located below the first upper groove (214a) may be named 'first cooling water', and the remaining cooling water may be named 'second cooling water'. The first cooling water and the second cooling water flow in opposite directions.

[0260] Additionally, some of the cooling water moving between the plurality of cooling fins (221) located below the second upper groove (214b) may be named 'third cooling water', and the remaining cooling water may be named 'fourth cooling water'. The third cooling water and the fourth cooling water flow in opposite directions.

[0261] The first coolant and the third coolant flow in opposite directions and move to adjacent edge regions (211b), respectively. Then, the second coolant and the fourth coolant flow in opposite directions and collide with each other.

[0262] Specifically, the first cooling water moves along the longitudinal direction of the cooling fins (221) to the edge region (211b) of the upper plate groove (211) (W4 in FIG. 11 and 13), and then moves to the outside of the cooling plate (20) of the present invention through the outlet channel (213b), the internal space (213s) of the outlet protrusion (213), and the outlet (213h) in sequence (W7 in FIG. 11 and 13).

[0263] The third cooling water moves along the longitudinal direction of the cooling fins (221) to the edge region (211b) of the upper plate groove (211) (W5 in FIG. 11 and 13), and then moves to the outside of the cooling plate (20) of the present invention through the outlet channel (213b), the internal space (213s) of the outlet protrusion (213), and the outlet (213h) in sequence (W7 in FIG. 11 and 13).

[0264] Meanwhile, the second and fourth coolants move along the longitudinal direction of the cooling fins (221), collide with each other, and rise to move to the upper bulkhead groove (214c) (W6 in FIG. 11 and 13, see FIG. 12), and then move along the longitudinal direction of the upper bulkhead groove (214c) (X direction in FIG. 11 and 13). Then, the coolants pass through the open outlet end (214c2) of the upper bulkhead groove (214c), and then move to the outside of the cooling plate (20) of the present invention by passing through the edge region (211b) of the upper plate groove (211), the outlet flow path (213b), the internal space (213s) of the outlet protrusion (213), and the water outlet (213h) in sequence (W7 in FIG. 11 and 13).

[0265] On the lower surface of the bottom plate (22) (specifically, below the pin area (22a) of the bottom plate (22)), a high-heat circuit component (e.g., a chip such as a CPU or GPU) may be placed, or a part of the circuit component that generates high heat may be placed.

[0266] Accordingly, the cooling water flowing into the cooling plate (20) lowers the temperature of the cooling fins (221) on the high-heat circuit components or the parts where high heat is generated, thereby further improving the cooling efficiency of the cooling plate (20).

[0267] Meanwhile, according to another embodiment of the present invention, a plurality of pairs of upper partitions (215) may be formed in the upper groove (214) of the top plate (21).

[0268] As described above, FIGS. 6 to 13 show an embodiment in which one pair of upper partitions (215) is formed.

[0269] FIGS. 14 to 19 illustrate an embodiment in which two pairs of upper partitions (215) are formed. Although not illustrated, three or more pairs of upper partitions (215) may be formed. FIGS. 6 and FIGS. 8 may also be applied to an embodiment in which two or more pairs of upper partitions (215) are formed.

[0270] Below, a cooling plate (20') according to the embodiment illustrated in FIGS. 14 to 19 will be described.

[0271] The cooling plate (20') according to the embodiment shown in FIGS. 14 to 19 differs only in the number of a pair of upper partitions (215) when compared to the cooling plate (20) according to the embodiment shown in FIGS. 6 to 13.

[0272] Accordingly, other than the above differences, the other components of the cooling plate (20') according to the embodiments shown in FIGS. 14 to 19 are identical to the cooling plate (20) according to the embodiments shown in FIGS. 6 to 13, so the specific description is replaced with the above-mentioned content.

[0273] FIGS. 15 and 16 are drawings in which the top plate (21') of FIG. 14 is flipped over so that the upper groove (214') is visible. The lower surface (21b) of the top plate (21') is facing upward. In FIG. 15, the left side of the top plate (21') is the side with the water outlet (213h), and the right side is the side with the water inlet (212h). Also, in FIG. 16, the left side of the top plate (21') is the side with the water inlet (212h), and the right side is the side with the water outlet (213h).

[0274] The top plate (21') includes two pairs of upper bulkheads (2151, 2152).

[0275] Two pairs of upper bulkheads (2151, 2152) are formed in the upper groove (214').

[0276] Two pairs of upper bulkheads (2151, 2152) represent a first pair of upper bulkheads (2151) and a second pair of upper bulkheads (2152).

[0277] The ‘first pair of upper bulkheads (2151) and the second pair of upper bulkheads (2152)’ may be briefly referred to as the ‘first and second pair of upper bulkheads (2151, 2152)’ below.

[0278] In the first and second pair of upper partitions (2151, 2152), the upper partitions (2151, 2152) are formed with a predetermined length (height) from the bottom surface of the upper groove (214') toward the upper plate groove (211). The height of the upper partitions (2151, 2152) may be equal to the depth of the upper groove (214').

[0279] A first and second pair of upper partitions (2151, 2152) are formed with a preset length in the transverse direction (X direction in FIG. 15) of the upper groove (214'). The preset length may be the same as the length in the transverse direction of the upper groove (214').

[0280] And, a first and second pair of upper partitions (2151, 2152) are formed spaced apart by a predetermined distance in the vertical direction (Y direction in FIG. 15) of the upper groove (214').

[0281] The first pair of upper partitions (2151) consists of a first upper partition (2151a) and a second upper partition (2151b), and the second pair of upper partitions (2152) consists of a third upper partition (2152a) and a fourth upper partition (2152b).

[0282] The first upper bulkhead (2151a) and the second upper bulkhead (2151b) are spaced apart by a predetermined distance in the vertical direction (Y direction in FIG. 15) of the upper groove (214'). Accordingly, cooling water flows between the first upper bulkhead (2151a) and the second upper bulkhead (2151b). This applies equally to the third upper bulkhead (2152a) and the fourth upper bulkhead (2152b).

[0283] Among the upper grooves (214'), the space between the first upper partition (2151a) and the second upper partition (2151b) can be named the 'first upper partition groove (214'd)', and the space between the third upper partition (2152a) and the fourth upper partition (2152b) can be named the 'second upper partition groove (214'e)'.

[0284] The first upper bulkhead groove (214'd) and the second upper bulkhead groove (214'e) are in communication with the upper plate groove (211).

[0285] The upper groove (214') can be divided into 5 regions by the first and second pair of upper partitions (2151, 2152).

[0286] Specifically, the upper groove (214') can be divided into a first upper groove (214'a), a second upper groove (214'b), a third upper groove (214'c), a first upper partition groove (214'd), and a second upper partition groove (214'e).

[0287] The first upper partition groove (214'd) is located between the first upper groove (214'a) and the second upper groove (214'b), and the second upper partition groove (214'e) is located between the second upper groove (214'b) and the third upper groove (214'c).

[0288] A first upper partition (2151a) is located between the first upper groove (214'a) and the first upper partition groove (214'd), and a second upper partition (2151b) is located between the first upper partition groove (214'd) and the second upper groove (214'b). Additionally, a third upper partition (2152a) is located between the second upper groove (214'b) and the second upper partition groove (214'e), and a fourth upper partition (2152b) is located between the second upper partition groove (214'e) and the third upper groove (214'c).

[0289] To elaborate, in the upper groove (214'), the first upper groove (214'a) and the third upper groove (214'c) are positioned on one side and the other side with respect to the first and second pair of upper partitions (2151, 2152). The one side and the other side point opposite each other in the vertical direction (Y direction in FIGS. 14 to 16) of the upper groove (214').

[0290] The first upper groove (214'a) is positioned on one side of the upper groove (214'), and the third upper groove (214'c) is positioned on the other side of the upper groove (214'). The second upper groove (214'b) is positioned in the middle of the first upper groove (214'a) and the third upper groove (214'c).

[0291] The two ends of each of the first upper groove (214'a), the second upper groove (214'b), and the third upper groove (214'c) will be described (see FIG. 15 and FIG. 16).

[0292] Each of the first upper groove (214'a), the second upper groove (214'b), and the third upper groove (214'c) represents an inlet end (214'a1, 214'b1, 214'c1) and an outlet end (214'a2, 214'b2, 214'c2).

[0293] The inlet end (214'a1, 214'b1, 214'c1) represents an end located on the inlet flow path (212b), and the outlet end (214'a2, 214'b2, 214'c2) represents an end located on the outlet flow path (213b).

[0294] The inlet end portions (214'a1, 214'b1, 214'c1) are opened. Accordingly, the inlet end portions (214'a1, 214'b1, 214'c1) of the first upper groove (214'a), the second upper groove (214'b), and the third upper groove (214'c), respectively, are connected to the inlet passage (212b), and the cooling water flowing into the inlet passage (212b) passes through the opened inlet end portions (214'a1, 214'b1, 214'c1) and flows into the first upper groove (214'a), the second upper groove (214'b), and the third upper groove (214'c).

[0295] A bulkhead is formed at the outlet end (214'a2, 214'b2, 214'c2). The bulkhead may be named an "outlet bulkhead." The drawing reference numeral of the outlet bulkhead is to be applied identically to the drawing reference numeral of the outlet end (214'a2, 214'b2, 214'c2).

[0296] The exit partitions (214'a2, 214'b2, 214'c2) are formed with a predetermined length (height) from the bottom surface of the upper groove (214') toward the top plate groove (211). The height of the exit partitions (214'a2, 214'b2, 214'c2) may be equal to the depth of the upper groove (214').

[0297] The exit partitions (214'a2, 214'b2, 214'c2) are formed with a preset length in the vertical direction (Y direction in FIG. 16) of the upper groove (214').

[0298] To elaborate, the exit partition (214'a2) formed in the first upper groove (214'a) is formed in the vertical direction of the upper groove (214') to the width of the first upper groove (214'a) and blocks the first upper groove (214'a).

[0299] The exit partition (214'b2) formed in the second upper groove (214'b) is formed in the vertical direction of the upper groove (214') to the width of the second upper groove (214'b) and blocks the second upper groove (214'b).

[0300] And, the exit partition (214'c2) formed in the third upper groove (214'c) is formed in the vertical direction of the upper groove (214') to the width of the third upper groove (214'c) and blocks the third upper groove (214'c).

[0301] The outlet ends (214'a2, 214'b2, 214'c2) of the first upper groove (214'a), the second upper groove (214'b), and the third upper groove (214'c) are blocked (not in communication) with the outlet flow path (213b) by the outlet partition (214'a2, 214'b2, 214'c2).

[0302] Accordingly, the cooling water flowing into the inlet end (214'a1, 214'b1, 214'c1) of the first upper groove (214'a), the second upper groove (214'b), and the third upper groove (214'c), respectively, through the inlet channel (212b), moves along the transverse direction (X direction in FIG. 15) of the upper groove (214'), and is blocked by the outlet partition (214'a2, 214'b2, 214'c2) formed at the outlet end (214'a2, 214'b2, 214'c2) of the first upper groove (214'a), the second upper groove (214'b), and the third upper groove (214'c), respectively, and is positioned below the first upper groove (214'a), the second upper groove (214'b), and the third upper groove (214'c). It moves between the cooling fins (221). All the cooling water in the first upper groove (214'a), the second upper groove (214'b), and the third upper groove (214'c) moves toward the cooling fins (221).

[0303] The ends of the first upper bulkhead groove (214'd) and the second upper bulkhead groove (214'e) will be described.

[0304] Both ends of the first upper partition groove (214'd) and the second upper partition groove (214'e) represent the inlet end (214'd1, 214'e1) and the outlet end (214'd2, 214'e2).

[0305] The inlet end (214'd1, 214'e1) represents the end located on the inlet flow path (212b), and the outlet end (214'd2, 214'e2) represents the end located on the outlet flow path (213b).

[0306] A bulkhead is formed at the entrance end (214'd1, 214'e1). The bulkhead may be named an "entrance bulkhead." The entrance bulkhead may be part of the side of the top plate groove (211) as shown in FIG. 15. The reference numeral of the entrance bulkhead is to be the same as the reference numeral of the entrance end (214'd1, 214'e1).

[0307] The entrance bulkhead (214'd1) of the first upper bulkhead groove (214'd) can be named the 'first entrance bulkhead (214'd1)', and the entrance bulkhead (214'e1) of the second upper bulkhead groove (214'e) can be named the 'second entrance bulkhead (214'e1)'.

[0308] According to an embodiment of the present invention, the inlet partition (214'd1, 214'e1) may be formed with a predetermined length (height) from the bottom surface of the upper partition groove (214'd, 214'e) toward the top plate groove (211). The height of the inlet partition (214'd1, 214'e1) may be equal to the depth of the upper partition groove (214'd, 214'e).

[0309] The first entrance bulkhead (214'd1) is formed from the first upper bulkhead (2151a) to the second upper bulkhead (2151b) in the longitudinal direction (Y direction in FIG. 15) of the first upper bulkhead groove (214'd).

[0310] To elaborate, the first entrance partition (214'd1) is formed in the vertical direction of the upper groove (214') to the width of the first upper partition groove (214'd) and blocks the first upper partition groove (214'd).

[0311] And, the second entrance bulkhead (214'e1) is formed from the third upper bulkhead (2152a) to the fourth upper bulkhead (2152b) in the vertical direction (Y direction in FIG. 15) of the second upper bulkhead groove (214'e).

[0312] To elaborate, the second entrance partition (214'e1) is formed in the vertical direction of the upper groove (214') to the width of the second upper partition groove (214'e) and blocks the second upper partition groove (214'e).

[0313] The inlet ends of the first upper partition groove (214'd) and the second upper partition groove (214'e) are blocked (not in communication with) the inlet passage (212b) by the inlet partition (214'd1, 214'e1).

[0314] Accordingly, the cooling water flowing into the inlet channel (212b) cannot flow into the first upper partition groove (214'd) and the second upper partition groove (214'e) by the inlet partition (214'd1, 214'e1) formed at the inlet end (214'd1, 214'e1) of the first upper partition groove (214'd) and the second upper partition groove (214'e).

[0315] Meanwhile, the outlet-side ends (214'd2, 214'e2) of the first upper bulkhead groove (214'd) and the second upper bulkhead groove (214'e) are opened. Accordingly, the outlet-side ends (214'd2, 214'e2) are connected to the outlet flow path (213b), and the cooling water flowing into the first upper bulkhead groove (214'd) and the second upper bulkhead groove (214'e) passes through the opened outlet-side ends (214'd2, 214'e2) and moves to the outlet flow path (213b).

[0316] The bottom plate (22) and cooling fins (221) of the cooling plate (20') shown in FIGS. 14 to 19 are identical to the bottom plate (22) and cooling fins (221) of the cooling plate (20) shown in FIGS. 6 to 13, so the description thereof is replaced with the aforementioned content.

[0317] The path of the coolant flow is described below (see FIGS. 17 to 19). The description is based on an embodiment in which an inlet protrusion (212) and an outlet protrusion (213) are formed.

[0318] Cooling water flows into the internal space (212s) of the inlet protrusion (212) through the inlet port (212h) (W21), and then moves into the interior of the first upper groove (214'a), the second upper groove (214'b) and the third upper groove (214'c) by passing through the inlet channel (212b) and the inlet end (214'a1) of the first upper groove (214'a), the inlet end (214'b1) of the second upper groove (214'b), and the inlet end (214'c1) of the third upper groove (214'c) (W22, W23, W24). At this time, the cooling water in the inlet channel (212b) cannot move into the interior of the first upper partition groove (214'd) and the second upper partition groove (214'e) because the inlet ends (214'd1, 214'e1) of the first upper partition groove (214'd) and the second upper partition groove (214'e) are blocked by the partition.

[0319] Cooling water (W22, W23, W24) that has moved into the interior of the first upper groove (214'a), the second upper groove (214'b), and the third upper groove (214'c) moves along the horizontal direction (X direction in FIG. 17) of the upper groove (214'), and because the outlet ends (214'a2, 214'b2, 214'c2) of the first upper groove (214'a), the second upper groove (214'b), and the third upper groove (214'c), respectively, are blocked by partitions, it moves to the upper plate groove (211) through an opening located at the bottom of the upper groove (214').

[0320] A plurality of cooling fins (221) are arranged in the fin area (211a) of the upper plate groove (211). As previously described, the longitudinal direction (Y direction in FIG. 17) of the cooling fins (221) is parallel to the longitudinal direction of the upper groove (214').

[0321] Coolant moving in the horizontal direction (X direction in FIG. 17) from the upper groove (214') moves to the fin area (211a) of the upper plate groove (211) and flows between the plurality of cooling fins (221), and then moves along the longitudinal direction (Y direction in FIG. 17) of the plurality of cooling fins (221).

[0322] Some of the cooling water moving between the plurality of cooling fins (221) located below the first upper groove (214'a) may be named 'first cooling water', and the remaining cooling water may be named 'second cooling water'. The first cooling water and the second cooling water flow in opposite directions.

[0323] Additionally, some of the cooling water moving between the plurality of cooling fins (221) located below the second upper groove (214'b) may be named 'third cooling water', and the remaining cooling water may be named 'fourth cooling water'. The third cooling water and the fourth cooling water flow in opposite directions.

[0324] Additionally, some of the cooling water moving between the plurality of cooling fins (221) located below the third upper groove (214'c) may be named 'fifth cooling water', and the remaining cooling water may be named 'sixth cooling water'. The fifth cooling water and the sixth cooling water flow in opposite directions.

[0325] The first coolant and the sixth coolant flow in opposite directions and move to adjacent edge regions (211b). Then, the second coolant and the third coolant flow in opposite directions and collide with each other, and the fourth coolant and the fifth coolant flow in opposite directions and collide with each other.

[0326] Specifically, the first cooling water moves along the longitudinal direction of the cooling fins (221) to the edge region (211b) of the upper plate groove (211) (W25 in FIG. 17 and 19), and then moves to the outside of the cooling plate (20') of the present invention by passing through the outlet channel (213b), the internal space (213s) of the outlet protrusion (213), and the outlet (213h) in sequence (W29 in FIG. 17 and 19).

[0327] The above-mentioned sixth cooling water moves along the longitudinal direction of the cooling fins (221) to the edge region (211b) of the upper plate groove (211) (W26 in FIG. 17 and 19), and then moves to the outside of the cooling plate (20') of the present invention by passing through the outlet channel (213b), the internal space (213s) of the outlet protrusion (213), and the outlet (213h) in sequence (W29 in FIG. 17 and 19).

[0328] Meanwhile, the second and third coolant move along the longitudinal direction of the cooling fins (221), collide with each other, and rise to move to the first upper bulkhead groove (214'd) (W27 in FIG. 17 and 19, see FIG. 18), and then move along the longitudinal direction of the first upper bulkhead groove (214'd) (X direction in FIG. 17 and 19). Then, the coolant passes through the open outlet end (214'd2) of the first upper bulkhead groove (214'd), the edge region (211b) of the top plate groove (211), the outlet flow path (213b), the internal space (213s) of the outlet protrusion (213), and the outlet port (213h) in sequence, and moves to the outside of the cooling plate (20') of the present invention (W29 in FIG. 17 and 19).

[0329] Then, the fourth and fifth coolants move along the longitudinal direction of the cooling fins (221), collide with each other, and rise to move to the second upper bulkhead groove (214'e) (W28 in FIG. 17 and 19, see FIG. 18), and then move along the longitudinal direction (X direction in FIG. 17 and 19) of the second upper bulkhead groove (214'e). Then, the coolants pass through the open outlet end (214'e2) of the second upper bulkhead groove (214'e), and then move to the outside of the cooling plate (20') of the present invention, passing through the edge region (211b) of the upper plate groove (211), the outlet flow path (213b), the internal space (213s) of the outlet protrusion (213), and the outlet port (213h) in sequence (W29 in FIG. 17 and 19).

[0330] In FIG. 1, etc., reference numeral 112a represents a pipe connected to an inlet (112h), and reference numeral 113a represents a pipe connected to an outlet (113h). In FIG. 6, etc., reference numeral 212a represents a pipe connected to an inlet (212h), and reference numeral 213a represents a pipe connected to an outlet (213h).

[0331] The cooling plate (10, 20, 20') of the present invention minimizes the pressure exerted by the cooling water on the cooling fins (121, 221) by arranging the cooling fins (121, 221) so that the cooling water does not press on one surface of the cooling fins (121, 221) in a direction orthogonal to one surface of the cooling fins (121, 221). Accordingly, the overall power consumption of the cooling system is minimized.

[0332] In addition, the cooling plate (10, 20, 20') of the present invention branches the cooling water and moves it between the cooling fins (121, 221), thereby reducing the pressure loss of the cooling water and improving cooling efficiency.

[0333] In addition, the cooling plate (10, 20, 20') of the present invention allows the cooling water to move along the longitudinal direction of the cooling fins (121, 221), thereby reducing the flow resistance of the cooling water.

[0334] Thus, the cooling plate (10, 20, 20') of the present invention has the effect of maximizing cooling efficiency by enhancing heat transfer performance and hydrodynamic performance.

Claims

1. As a cooling plate for removing heat from circuit components, A top plate comprising an inlet for cooling water to flow in and an outlet for cooling water to flow out; and It includes a lower plate coupled to the upper plate and having a plurality of cooling fins arranged thereon, The upper plate further includes an inlet passage communicating with the inlet, an outlet passage communicating with the outlet, and an upper plate groove accommodating the plurality of cooling fins. A cooling plate, the height of the cooling fins being the same as the depth of the groove in the upper plate.

2. In Paragraph 1, The upper plate groove and the lower plate each include a fin area in which the plurality of cooling fins are arranged and an edge area surrounding the fin area. Cooling water flowing into the interior of the upper plate groove passes between the cooling fins and reaches the edge region, and moves along the edge region, a cooling plate.

3. In Paragraph 2, A pair of internal partitions are formed in the upper plate groove, and A cooling plate in which the above pair of internal partitions are formed between the pin area and the edge area corresponding to the transverse direction of the upper plate groove, thereby partitioning the pin area and the edge area.

4. In Paragraph 3, Between the aforementioned pair of internal partitions, a first group and a second group composed of the aforementioned plurality of cooling fins are disposed, and A cooling plate in which the longitudinal direction of the cooling fins is arranged parallel to the longitudinal direction of the internal partition.

5. In Paragraph 4, In the pin area of ​​the lower plate, the first group and the second group are spaced apart by a certain distance, and A cooling plate in which the inlet flow path of the above-mentioned top plate is located above the area where the above-mentioned first group and the above-mentioned second group are spaced apart.

6. In Paragraph 2, The above top plate further includes an upper groove, and The upper groove is formed in the upper plate groove and communicates with the upper plate groove, and A cooling plate in which the cooling water flowing into the above inlet channel passes through the above upper groove and moves to the above upper plate groove.

7. In Paragraph 6, A cooling plate in which the upper groove is formed on the upper part of the pin area of ​​the upper plate groove and is not formed on the upper part of the edge area of ​​the upper plate groove.

8. In Paragraph 6, The above top plate further includes a pair of upper bulkheads, and A cooling plate, wherein the above pair of upper partitions are formed in the above upper groove, and the upper partition groove between the above pair of upper partitions communicates with the above upper plate groove.

9. In Paragraph 8, The upper groove is divided into a first upper groove, a second upper groove, and the upper partition groove by the above pair of upper partitions, and The upper bulkhead groove is a cooling plate located between the first upper groove and the second upper groove.

10. In Paragraph 9, A cooling plate, wherein each of the first upper groove and the second upper groove comprises an inlet end that is open and communicates with the inlet passage, and an outlet end that is blocked from the outlet passage by a partition.

11. In Paragraph 10, The upper bulkhead groove comprises an inlet end blocked from the inlet passage by the bulkhead and an outlet end that is open and communicates with the outlet passage.

12. In Paragraph 6, A cooling plate in which the plurality of cooling fins are arranged in a single line in one direction in the fin area of ​​the lower plate.

13. In Paragraph 6, The above-mentioned top plate includes a first pair of upper bulkheads and a second pair of upper bulkheads, and A cooling plate, wherein the first pair of upper partitions and the second pair of upper partitions are formed in the upper groove, and the first upper partition groove between the first pair of upper partitions and the second upper partition groove between the second pair of upper partitions are in communication with the upper plate groove.

14. In Paragraph 13, The upper groove is divided into a first upper groove, a second upper groove, a third upper groove, a first upper partition groove, and a second upper partition groove by the first pair of upper partitions and the second pair of upper partitions, and A cooling plate in which the first upper partition groove is located between the first upper groove and the second upper groove, and the second upper partition groove is located between the second upper groove and the third upper groove.

15. In Paragraph 14, A cooling plate in which each of the first upper groove, the second upper groove, and the third upper groove comprises an inlet end that is open and communicates with the inlet passage, and an outlet end that is blocked from the outlet passage by a partition.

16. In Paragraph 15, The first upper partition groove and the second upper partition groove comprise an inlet end that is blocked from the inlet flow path by a partition, and an outlet end that is open and communicates with the outlet flow path, forming a cooling plate.

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