Cold Plate
The cold plate design with dual cooling surfaces and integrated fins addresses the inefficiencies in cooling non-uniform components by enhancing thermal contact and reducing manufacturing complexity.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- NIDEC CORP(JP)
- Filing Date
- 2022-05-27
- Publication Date
- 2026-07-07
AI Technical Summary
Conventional cooling devices struggle to efficiently cool heat-generating components with non-uniform shapes due to reduced thermal contact area caused by surface irregularities.
A cold plate design featuring a facing portion with two cooling surfaces and a heat exchange chamber that follows the contours of the heat-generating component, allowing for enhanced thermal contact and efficient heat transfer through a single-piece construction with integrated fins and flow paths.
The design efficiently cools heat-generating components with non-uniform shapes by increasing the thermal contact area and reducing the need for multiple cold plates, thereby improving cooling performance and simplifying manufacturing.
Smart Images
Figure 0007886182000001 
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Abstract
Description
Technical Field
[0001] The present invention relates to a cold plate.
Background Art
[0002] In a conventional cooling device, a heat receiving member that receives heat from a heat generating body by a refrigerant includes a base member that is thermally connected to the heat generating body (for example, Patent Document 1). In the base member, a predetermined region of the opposing plane that is thermally connected to the heat generating body is provided.
Prior Art Documents
Patent Documents
[0003]
Patent Document 1
Summary of the Invention
Problems to be Solved by the Invention
[0004] For example, in a heat generating component, when there are irregularities on the surface facing the opposing plane of the heat receiving member, in the cooling device of Patent Document 1, the area of the predetermined region thermally connected to the heat generating body becomes small, and it is difficult to sufficiently cool the heat generating body.
[0005] The present disclosure has been made in view of the above problems, and an object thereof is to provide a cold plate capable of efficiently cooling a heat generating component having a non-uniform shape.
Means for Solving the Problems
[0006] An exemplary cold plate of the present disclosure comprises a facing portion, a cover portion, and a heat exchange chamber. The facing portion faces a heat-generating component on one side in a first direction. The cover portion is located on the other side in the first direction of the facing portion. The heat exchange chamber comprises at least the facing portion and the cover portion and conducts heat from the heat-generating component to a coolant via the facing portion. The facing portion comprises a first cooling surface and a second cooling surface. The first cooling surface is provided on one side in a first direction. The second cooling surface is provided on one side in a first direction. The second cooling surface is located at a distance in a first direction from the first cooling surface. [Effects of the Invention]
[0007] According to an exemplary version of the present invention, it becomes possible to efficiently cool heat-generating components having a non-uniform shape. [Brief explanation of the drawing]
[0008] [Figure 1] Figure 1 shows an overview of a cooling system having a cold plate according to an exemplary embodiment. [Figure 2] Figure 2 shows a part of the cooling unit. [Figure 3] Figure 3 shows the cold plate separated from the heat-generating component. [Figure 4] Figure 4 shows the heat-generating components and cold plate from Figure 3 from a different angle. [Figure 5] Figure 5 shows the cold plate with the opposing part and the cover part separated. [Figure 6] Figure 6 shows the opposing part and cover part of Figure 5 from a different angle. [Figure 7] Figure 7 shows the heat exchange chamber viewed from the other side in the first direction. [Figure 8] Figure 8 is a cross-sectional view of the heat exchange chamber along the second direction. [Figure 9] Figure 9 is a schematic diagram showing the cross-sectional view shown in Figure 8. [Modes for carrying out the invention]
[0009] Hereinafter, exemplary embodiments of the present disclosure will be described with reference to the drawings. In the drawings, the same or corresponding parts will be denoted by the same reference numerals and will not be repeated in the description. In this specification, for ease of understanding, mutually orthogonal first directions Z, second direction X, and third direction Y are appropriately described. Furthermore, one side of the first direction Z is described as first direction side Z1, and the other side of the first direction Z is described as first direction other side Z2. Furthermore, one side of the second direction X is described as second direction side X1, and the other side of the second direction X is described as second direction other side X2. Furthermore, one side of the third direction Y is described as third direction side Y1, and the other side of the third direction Y is described as third direction other side Y2. However, these directions are defined only for the convenience of explanation and do not limit the orientation of the exemplary cold plates in use, except when it is necessary to define the horizontal and vertical directions in particular. Furthermore, in this specification, "orthogonal directions" also includes substantially orthogonal directions.
[0010] Referring to Figure 1, a cooling system 100 having a cold plate P1 of an exemplary embodiment will be described. Figure 1 is a diagram showing an overview of the cooling system 100.
[0011] The cooling system 100 is provided, for example, in a computer device 200. The cooling system 100 cools the computer device 200. The computer device 200 is an example of electronic equipment. The cooling system 100, as an example, has three cooling units U1, U2, and U3, a manifold M1, a manifold M2, a pump unit 21, and a heat exchanger 22. The cooling system 100 may be provided in locations other than the computer device 200.
[0012] The pump unit 21 has, for example, one or more pump devices. The multiple pump devices are connected to each other in series or in parallel. Each pump device has one or more pumps that draw in and discharge refrigerant. The multiple pumps are connected to each other in series or in parallel.
[0013] The pump unit 21 is connected, for example, to manifold M1 and to manifold M2 via flow path M3 and heat exchanger 22. Manifold M1 is, for example, a pipe connecting the pump unit 21 to cooling units U1, U2, and U3. Flow path M3 is, for example, a pipe connecting the pump unit 21 to heat exchanger 22. Coolant flows through the inside of manifolds M1, M2 and flow path M3.
[0014] The pump unit 21 supplies refrigerant to the manifold M1. The refrigerant passes through the inside of the manifold M1. The manifold M1 distributes the refrigerant supplied from the pump unit 21 to the cooling units U1, U2, and U3. The refrigerant supplied to each of the cooling units U1, U2, and U3 passes through each of the cooling units U1, U2, and U3 and is supplied to the manifold M2. Cooling unit U1 will be described as a representative example below. The configuration and function of cooling units U2 and U3 are the same as those of cooling unit U1.
[0015] The cooling unit U1 includes, for example, a cold plate P1. The cold plate P1 receives heat from heat-generating components (not shown) and cools them. Heat-generating components include, for example, a computing device such as a CPU and a storage device such as memory located in a computer device 200. As the refrigerant passes through the cooling unit U1, it also passes through the cold plate P1. For example, the refrigerant exchanges heat within the cold plate P1, causing the heated refrigerant to circulate within the cooling system 100. The cooling unit U1 may have two or more cold plates, including the cold plate P1.
[0016] The manifold M2 is, for example, a pipe that connects the cooling units U1, U2, U3 and the heat exchanger 22. The refrigerant passes through the inside of the manifold M2. The manifold M2 combines the refrigerant that has passed through each of the cooling units U1, U2, U3 and supplies it to the heat exchanger 22. The refrigerant supplied to the heat exchanger 22 passes through, for example, the heat exchanger 22. For example, the heat exchanger 22 is a radiator that radiates heat to the outside by allowing the refrigerant with heat to pass through. Inside the heat exchanger 22, there are a plurality of refrigerant pipes through which the refrigerant passes and a plurality of fins arranged around the refrigerant pipes. A part of each of the plurality of fins contacts the refrigerant pipe. More specifically, the fins and the refrigerant pipes are joined by welding or the like. The fins absorb the heat of the refrigerant pipes and the refrigerant and radiate the heat to the outside air, thereby reducing the temperature of the refrigerant. However, the heat exchanger 22 is not limited to a radiator that radiates heat to the outside. For example, the heat exchanger 22 may perform heat exchange between a flow path through which the refrigerant passes and a flow path through which another refrigerant passes.
[0017] The refrigerant that has passed through the heat exchanger 22 is supplied to the pump unit 21 through the flow path M3. The refrigerant supplied to the pump unit 21 is again supplied to the manifold M1 by the pump unit 21. As described above, in the cooling system 100, the refrigerant circulates through the pump unit 21, the manifold M1, the cooling units U1, U2, U3, the manifold M2, the heat exchanger 22, and the flow path M3. In FIG. 1, the circulation of the refrigerant is indicated by arrows. Note that the circulation direction of the refrigerant may be reversed. Also, the arrangement of the cooling units U1, U2, U3, the pump unit 21, and the heat exchanger 22 is an example, and other arrangements may be possible.
[0018] Next, referring to FIGS. 2 to 4, the cold plate P1 will be described in detail. FIG. 2 is a view showing a part of the cooling unit U1. FIG. 3 is a view showing the cold plate P1 separated from the heat-generating component H1. FIG. 4 is a view showing the heat-generating component H1 and the cold plate P1 of FIG. 3 from another angle.
[0019] For example, the cooling unit U1 is disposed to face the substrate B1 disposed in the computer device 200. Specifically, the cold plate P1 of the cooling unit U1 faces the heat-generating component H1 disposed on the substrate B1. In the present embodiment, the heat-generating component H1 extends along the first direction Z perpendicular to the mounting surface of the substrate B1. One end face of the heat-generating component H1 on one side Z1 in the first direction is mounted on the substrate B1. The end face of the heat-generating component H1 on the other side Z2 in the first direction faces the cold plate P1. That is, the cold plate P1 is located on the other side Z2 in the first direction of the heat-generating component H1. In the present embodiment, the end face of the heat-generating component H1 has undulations in the first direction Z.
[0020] The cold plate P1 has a facing portion 11, a cover portion 12, and a heat exchange chamber 13. The facing portion 11 faces the heat-generating component H1 on one side Z1 in the first direction. The cover portion 12 is disposed on the other side Z2 in the first direction of the facing portion 11. The heat exchange chamber 13 is at least composed of the facing portion 11 and the cover portion 12. The heat exchange chamber 13 conducts the heat of the heat-generating component H1 to the refrigerant through the facing portion 11. The facing portion 11 has a first cooling surface 11A and a second cooling surface 11B. The first cooling surface 11A is provided on one side Z1 in the first direction. The second cooling surface 11B is provided on one side Z1 in the first direction. The second cooling surface 11B is located away from the first cooling surface 11A in the first direction Z.
[0021] Therefore, since the first cooling surface 11A and the second cooling surface 11B face the end face of the heat-generating component H1 on the other side Z2 in the first direction, for example, the area of the region where the first cooling surface 11A and the second cooling surface 11B contact the end face of the heat-generating component H1 on the other side Z2 in the first direction becomes large. Therefore, the cold plate P1 can efficiently cool the heat-generating component H1 having a plurality of surfaces with different positions in the first direction. As a result, compared with the case where cold plates are provided for each of the plurality of surfaces, the pipes connecting the plurality of cold plates can be reduced. Thus, the space of the cooling surface of the cold plate can be made wider, and the heat-generating component H1 can be cooled more efficiently.
[0022] In the examples shown in Figures 2 to 4, the second cooling surface 11B is located away from the first cooling surface 11A in the first direction Z. The second cooling surface 11B is located away from the first cooling surface 11A on one side Z1 in the first direction.
[0023] Specifically, the first cooling surface 11A and the second cooling surface 11B are arranged in a stepped manner in the first direction Z, along the contours of the end face Z2 on the other side of the first direction of the heat-generating component H1. In other words, the first cooling surface 11A and the second cooling surface 11B have shapes that follow the end face Z2 on the other side of the first direction of the heat-generating component H1. For example, the first cooling surface 11A and the second cooling surface 11B are approximately parallel. For example, the shape of the first cooling surface 11A is approximately rectangular. The shape of the second cooling surface 11B is approximately rectangular. The first cooling surface 11A and the second cooling surface 11B are arranged side by side in the second direction X, which is perpendicular to the first direction Z. Specifically, the second cooling surface 11B is located X1 on one side of the second direction from the first cooling surface 11A. In other words, the first cooling surface 11A is located X2 on the other side of the second direction from the second cooling surface 11B. The shapes of the first cooling surface 11A and the second cooling surface 11B are not limited to being substantially rectangular. For example, the shapes of the first cooling surface 11A and the second cooling surface 11B are the same as the end face of the other side Z2 in the first direction of the heat-generating component H1.
[0024] For example, the first cooling surface 11A and the second cooling surface 11B are made of a single material. Therefore, it becomes easy to manufacture the opposing portion 11 as a single part, and the number of parts in the cold plate P1 can be reduced. In other words, the opposing portion 11, including the first cooling surface 11A and the second cooling surface 11B, is formed as a single part made of a single material. As an example, the opposing portion 11 is made of a metal with high thermal conductivity.
[0025] In this embodiment, the first cooling surface 11A and the second cooling surface 11B are arranged connected in the second direction X, but the invention is not limited to this, and the first cooling surface 11A and the second cooling surface 11B may be arranged separately from each other. Also, the first cooling surface 11A and the second cooling surface 11B may be composed of different materials. Furthermore, in this embodiment, as shown in Figures 2 and 3, the first cooling surface 11A and the second cooling surface 11B are in direct contact with the end face of the heat-generating component H1 on the other side Z2 in the first direction, but the invention is not limited to this, and the first cooling surface 11A and the second cooling surface 11B may face the end face of the heat-generating component H1 on the other side Z2 in the first direction via, for example, a heat conductive sheet.
[0026] For example, the shape of the cover portion 12 is approximately a rectangular parallelepiped. The surface of the cover portion 12 on one side Z1 (Figure 6) in the first direction has an opening. The cover portion 12 covers the opposing portion 11. For example, the cover portion 12 is made of resin or metal, etc.
[0027] When the opposing portion 11 is covered by the cover portion 12, a heat exchange chamber 13 is formed. In other words, the heat exchange chamber 13 is a region enclosed by the opposing portion 11, the surface of the cover portion 12 on the other side Z2 in the first direction (Figure 6), and four surfaces extending from the four edges of the surface of the cover portion 12 on the other side Z2 in the first direction toward the one side Z1 in the first direction. For example, the opposing portion 11 and the cover portion 12 are fixed together by brazing and welding. A refrigerant passes through the heat exchange chamber 13.
[0028] Next, the heat exchange chamber 13 will be described in detail with reference to Figures 5 to 9. Figure 5 shows the cold plate P1 with the opposing portion 11 and the cover portion 12 separated. Figure 6 shows the opposing portion 11 and the cover portion 12 from a different angle. Figure 7 shows the heat exchange chamber 13 viewed through from the other side Z2 in the first direction. Figure 8 is a cross-sectional view of the heat exchange chamber 13 along the second direction X. Figure 9 is a schematic diagram showing the cross-sectional view shown in Figure 8.
[0029] As shown in Figures 5 to 7, the cover portion 12 has a first guide portion 15A and a second guide portion 15B. The first guide portion 15A guides the refrigerant from the outside to the inside of the heat exchange chamber 13. The second guide portion 15B guides the refrigerant from the inside to the outside of the heat exchange chamber 13. For example, the first guide portion 15A is connected to the manifold M1. The first guide portion 15A guides the refrigerant supplied by the manifold M1 into the inside of the heat exchange chamber 13. Also, for example, the second guide portion 15B is connected to the cold plate P2. The second guide portion 15B guides the refrigerant that has passed through the heat exchange chamber 13 to the cold plate P2. Note that the connection destinations of the first guide portion 15A and the second guide portion 15B are not limited to the manifold M1 and the cold plate P2, respectively.
[0030] The heat exchange chamber 13 has a first flow path 17A and a second flow path 17B. The first flow path 17A is provided on the other side Z2 in the first direction of the first cooling surface 11A. The second flow path 17B is provided on the other side Z2 in the first direction of the second cooling surface 11B. In other words, the first flow path 17A and the second flow path 17B are arranged side by side in the second direction X. In this embodiment, the first flow path 17A and the second flow path 17B extend along a third direction Y that is perpendicular to the first direction Z and the second direction X. For example, in the first flow path 17A and the second flow path 17B, one side Y1 in the third direction is the downstream side, and the other side Y2 in the third direction is the upstream side.
[0031] Specifically, the opposing portion 11 has a first fin portion 14A and a second fin portion 14B. The first fin portion 14A is provided on the other side Z2 in the first direction of the first cooling surface 11A. The second fin portion 14B is provided on the other side Z2 in the first direction of the second cooling surface 11B. The first fin portion 14A and the second fin portion 14B each have a plurality of fins. The fins of the first fin portion 14A protrude outwards Z2 in the first direction of the first fin portion 14A and extend along the third direction Y. The fins of the second fin portion 14B protrude outwards Z2 in the first direction of the second fin portion 14B and extend along the third direction Y.
[0032] As shown in Figures 8 and 9, the surface of the first fin portion 14A on the other side Z2 in the first direction contacts the surface of the cover portion 12 on one side Z1 in the first direction. The surface of the second fin portion 14B on the other side Z2 in the first direction contacts the surface of the cover portion 12 on one side Z1 in the first direction.
[0033] Furthermore, as shown in Figures 6 to 9, the cover portion 12 has a partition portion 16. The partition portion 16 is provided on one side Z1 in the first direction of the cover portion 12. Specifically, the partition portion 16 protrudes from one side Z1 in the first direction of the cover portion 12 and extends along the third direction Y. In other words, the partition portion 16 extends along the direction in which the fins of the first fin portion 14A and the second fin portion 14B extend, and along the first flow path 17A and the second flow path 17B. The partition portion 16 is located between the first fin portion 14A and the second fin portion 14B. In other words, the partition portion 16 separates the first fin portion 14A and the second fin portion 14B, that is, the first flow path 17A and the second flow path 17B. Therefore, in the cold plate P1, the manufacturing of the partition portion 16 becomes easier, and the number of components in the cold plate P1 can be reduced. For example, the partition portion 16 is formed as a single component consisting of the cover portion 12 and a single material.
[0034] As described above, in the heat exchange chamber 13, a first flow path 17A or a second flow path 17B is formed between the cover portion 12 and the fins, between the fins and the fins, and between the partition portion 16 and the fins. A portion of the refrigerant guided into the heat exchange chamber 13 by the first guide portion 15A passes through the first flow path 17A. In addition, a portion of the refrigerant guided into the heat exchange chamber 13 by the first guide portion 15A that does not pass through the first flow path 17A passes through the second flow path 17B. Therefore, by branching the refrigerant through the first flow path 17A and the second flow path 17B, the heat-generating component H1 can be cooled more efficiently. Specifically, in Figure 7, the movement of the refrigerant in the heat exchange chamber 13 is indicated by arrows. The second guide portion 15B guides the refrigerant after passing through the first flow path 17A and the refrigerant after passing through the second flow path 17B to the outside of the heat exchange chamber 13.
[0035] In detail, in the first fin section 14A and the second fin section 14B, heat from the heat-generating component H1 is conducted to the refrigerant passing through the first flow path 17A or the second flow path 17B formed between the fins, via the first cooling surface 11A and the second cooling surface 11B and each fin. In other words, the first fin section 14A and the second fin section 14B conduct heat from the heat-generating component H1 to the refrigerant. In this way, the refrigerant passing through the first flow path 17A or the second flow path 17B formed between the fins increases the surface area in contact between the refrigerant and the fins, thereby improving the cooling performance of the cold plate P1.
[0036] In this embodiment, for example, the first flow path 17A and the second flow path 17B are connected in parallel to the first guide section 15A and the second guide section 15B. Therefore, the refrigerant that has passed through the first guide section 15A is more likely to branch into the first flow path 17A and the second flow path 17B. As a result, since refrigerant at the same temperature passes through the first flow path 17A and the second flow path 17B, the cooling performance of the first cooling surface 11A and the second cooling surface 11B with respect to the heat-generating component H1 can be made substantially the same. Specifically, the first guide section 15A is located on the other side Y2 in the third direction. The second guide section 15B is located on the one side Y1 in the third direction. In other words, the first guide section 15A is located upstream of the first flow path 17A and the second flow path 17B. The second guide section 15B is located downstream of the first flow path 17A and the second flow path 17B.
[0037] Furthermore, for example, the first guide section 15A is located on the other side X2 in the second direction. The second guide section 15B is located on the one side X1 in the second direction. Therefore, the distance of the path from the first guide section 15A through the first flow path 17A to the second guide section 15B is approximately the same as the distance of the path from the first guide section 15A through the second flow path 17B to the second guide section 15B. As a result, a flow path is formed in the heat exchange chamber 13 that can cool the heat-generating component H1 more efficiently. In other words, the first guide section 15A and the second guide section 15B are located on opposite sides of each other along the direction in which the first flow path 17A and the second flow path 17B are aligned.
[0038] The arrangement of the first guide section 15A and the second guide section 15B is not limited to the above. Specifically, the first guide section 15A may be located downstream of the first channel 17A and the second channel 17B, and the second guide section 15B may be located upstream of the first channel 17A and the second channel 17B. Also, for example, the first guide section 15A may be located on one side X1 of the second direction, and the second guide section 15B may be located on the other side X2 of the second direction. Furthermore, the first guide section 15A and the second guide section 15B may be located at substantially the same position along the second direction X.
[0039] Embodiments of the present disclosure have been described above with reference to the drawings (Figures 1 to 9). However, the present disclosure is not limited to the embodiments described above, and can be implemented in various forms without departing from its essence. Furthermore, the multiple components disclosed in the above embodiments can be modified as appropriate. For example, some components from all the components shown in one embodiment may be added to the components of another embodiment, or some components from all the components shown in one embodiment may be removed from the embodiment.
[0040] Furthermore, the drawings schematically show each component in order to facilitate understanding of the disclosure, and the thickness, length, number, spacing, etc. of each component shown may differ from the actual dimensions due to the convenience of drawing creation. Also, the configuration of each component shown in the above embodiments is merely an example and is not particularly limiting, and it goes without saying that various modifications are possible within the scope that does not substantially deviate from the effects of this disclosure.
[0041] Furthermore, this technology can be configured as follows: (1) A facing portion that faces the heat-generating component on one side in the first direction, A cover portion is positioned on the other side of the first direction of the opposing portion, A heat exchange chamber comprising at least the opposing portion and the cover portion, which conducts heat from the heat-generating component to the coolant via the opposing portion. It has, The opposing portion is, A first cooling surface provided on one side in the first direction, A second cooling surface provided on one side in the first direction and It has, The second cooling surface is a cold plate located away from the first cooling surface in a first direction. (2) The cold plate according to (1), wherein the first cooling surface and the second cooling surface are made of a single component. (3) The heat exchange chamber is The first flow path through which the refrigerant passes, The second flow path through which the refrigerant passes and It has, The first flow path is provided on the other side of the first cooling surface in the first direction, The second flow path is provided on the other side of the second cooling surface in the first direction, The cold plate according to (1) or (2), wherein the first flow path and the second flow path are arranged side by side in a second direction perpendicular to the first direction. (4) The opposing part is The first fin portion conducts heat from the heat-generating component to the coolant, The second fin portion conducts heat from the aforementioned heat-generating component to the coolant. It has, The first fin portion is provided on the other side of the first cooling surface in the first direction, The second fin portion is provided on the other side of the first cooling surface in the first direction, The surface of the first fin portion on the other side in the first direction contacts the surface of the cover portion on one side in the first direction. The cold plate according to any one of (1) to (3), wherein the surface of the second fin portion on the other side in the first direction is in contact with the surface of the cover portion on the one side in the first direction. (5) The cover portion has a partition portion that separates the first flow path and the second flow path, The partition portion is provided on one side of the cover portion in the first direction and extends along the first flow path and the second flow path of the cold plate according to (3) or (4). (6) The cover portion is A first guide section that guides the refrigerant from the outside to the inside of the heat exchange chamber, A second guide section that guides the refrigerant from the inside to the outside of the heat exchange chamber. It has, The first guide section is located on one side of the second direction, The second guide portion is a cold plate according to any of (3) to (5), located on the other side in the second direction. (7) The cold plate according to any one of (3) to (6), wherein the first channel and the second channel are connected in parallel to the first guide and the second guide. [Industrial applicability]
[0042] This disclosure is applicable to the field of cold plates. [Explanation of Symbols]
[0043] 11: Opposite part 11A: 1st cooling surface 11B:Second cooling surface 12: Cover section 13: Heat exchange room 14A: First fin section 14B: Second fin section 15A: 1st information section 15B:Second information section 16: Partition section 17A: First channel 17B: Second channel H1: Heat-generating component P1: Cold Plate X:Second direction X1: 2nd direction one side X2: Second direction, other side Y: Third direction Y1: 3rd direction one side Y2: Third direction, other side Z: 1st direction Z1: One side in the first direction Z2: 1st direction other side
Claims
1. A facing portion that faces the heat-generating component on one side in the first direction, A cover portion is positioned on the other side of the first direction of the opposing portion, A heat exchange chamber comprising at least the opposing portion and the cover portion, which conducts heat from the heat-generating component to the coolant via the opposing portion. It has, The opposing portion is, A first cooling surface provided on one side in the first direction, A second cooling surface provided on one side in the first direction and It has, The second cooling surface is located away from the first cooling surface in a first direction, The first cooling surface has a first fin portion that conducts heat from the heat-generating component to the coolant, The second cooling surface is a cold plate having a second fin portion that conducts heat from the heat-generating component to the coolant.
2. The cold plate according to claim 1, wherein the first cooling surface and the second cooling surface are composed of a single component.
3. The heat exchange chamber is The first flow path through which the refrigerant passes, The second flow path through which the refrigerant passes and It has, The first flow path is provided on the other side of the first cooling surface in the first direction, The second flow path is provided on the other side of the second cooling surface in the first direction, The cold plate according to claim 1 or claim 2, wherein the first flow path and the second flow path are arranged side by side in a second direction perpendicular to the first direction.
4. A facing portion that faces the heat-generating component on one side in the first direction, A cover portion is positioned on the other side of the first direction of the opposing portion, A heat exchange chamber comprising at least the opposing portion and the cover portion, which conducts heat from the heat-generating component to the coolant via the opposing portion. It has, The opposing portion is, A first cooling surface provided on one side in the first direction, A second cooling surface provided on one side in the first direction and It has, The second cooling surface is located away from the first cooling surface in a first direction, The heat exchange chamber is The first flow path through which the refrigerant passes, The second flow path through which the refrigerant passes and It has, The first flow path is provided on the other side of the first cooling surface in the first direction, The second flow path is provided on the other side of the second cooling surface in the first direction, The first channel and the second channel are arranged side by side in a second direction perpendicular to the first direction. The opposing portion is, A first fin portion that conducts heat from the heat-generating component to the coolant, A second fin portion that conducts heat from the heat-generating component to the coolant, It has, The first fin portion is provided on the other side of the first cooling surface in the first direction, The second fin portion is provided on the other side of the second cooling surface in the first direction, The surface of the first fin portion on the other side in the first direction contacts the surface of the cover portion on one side in the first direction. A cold plate in which the surface of the second fin portion on the other side in the first direction contacts the surface of the cover portion on the one side in the first direction.
5. The cover portion has a partition portion that separates the first flow path and the second flow path. The cold plate according to claim 3, wherein the partition portion is provided on one side of the cover portion in the first direction and extends along the first flow path and the second flow path.
6. The aforementioned cover portion is A first guide section that guides the refrigerant from the outside to the inside of the heat exchange chamber, A second guide section that guides the refrigerant from the inside to the outside of the heat exchange chamber. It has, The first guide section is located on one side in the second direction, The cold plate according to claim 3, wherein the second guide portion is located on the other side in the second direction.
7. A facing portion that faces the heat-generating component on one side in the first direction, A cover portion is positioned on the other side of the first direction of the opposing portion, A heat exchange chamber comprising at least the opposing portion and the cover portion, which conducts heat from the heat-generating component to the coolant via the opposing portion. It has, The opposing portion is, A first cooling surface provided on one side in the first direction, A second cooling surface provided on one side in the first direction and It has, The second cooling surface is located away from the first cooling surface in a first direction, The heat exchange chamber is The first flow path through which the refrigerant passes, The second flow path through which the refrigerant passes and It has, The first flow path is provided on the other side of the first cooling surface in the first direction, The second flow path is provided on the other side of the second cooling surface in the first direction, The first channel and the second channel are arranged side by side in a second direction perpendicular to the first direction. The aforementioned cover portion is A first guide section that guides the refrigerant from the outside to the inside of the heat exchange chamber, A second guide section that guides the refrigerant from the inside to the outside of the heat exchange chamber. It has, The first guide section is located on one side in the second direction, The second guide section is located on the other side in the second direction, The first channel and the second channel are connected in parallel to the first guide and the second guide in a cold plate.