Liquid cooling plate for centralized heat dissipation

Abstract

This invention provides a liquid cooling plate for centralized heat dissipation. The liquid cooling plate includes a substrate and a cover plate covering the upper surface of the substrate. The substrate includes an inlet hole and an outlet hole for supplying coolant. A cooling channel is formed on the upper surface of the substrate, comprising: a first channel and a second channel, the first channel connecting to the inlet hole and the second channel connecting to the outlet hole; and a unit flow channel disposed between the first and second channels. The unit flow channel corresponds to a group of objects to be cooled, which may include one object or multiple objects spaced apart along a front-back direction. The inlet end of the unit flow channel is located at the center of the object to be cooled and connects to the first channel, while the outlet end of the unit flow channel is located at the edge of the object to be cooled and connects to the second channel, so that the coolant first flows into the center of the unit flow channel and then flows out from the edge of the unit flow channel. This liquid cooling plate for centralized heat dissipation can improve the utilization rate of heat dissipation.

Description

Technical Field

[0001] This utility model relates to the field of radiators, and in particular to a liquid cooling plate for centralized heat dissipation. Background Technology

[0002] Liquid cooling plates can dissipate heat from components (chips, power devices / modules, etc.) to ensure stable operation of the components.

[0003] However, in existing liquid cooling plates, the coolant typically enters from one side of the object to be cooled and flows out from the opposite side, causing the coolant temperature to gradually rise and resulting in poor uniformity of heat dissipation from the object to be cooled. Utility Model Content

[0004] In view of the above-mentioned problems in the prior art, the purpose of this utility model is to provide a liquid cooling plate with centralized heat dissipation, which can improve the utilization rate of heat dissipation and improve the temperature uniformity of the object to be cooled.

[0005] To address the aforementioned problems, this utility model provides a liquid cooling plate for centralized heat dissipation. The liquid cooling plate includes a substrate and a cover plate covering the upper surface of the substrate. The lower surface of the substrate or the upper surface of the cover plate is used to mount an object to be cooled. The substrate includes an inlet hole and an outlet hole for supplying coolant. A cooling channel is formed on the upper surface of the substrate, and the cooling channel includes:

[0006] A first channel and a second channel, wherein the first channel is connected to the liquid inlet and the second channel is connected to the liquid outlet, the first channel and the second channel are spaced apart in the front-to-back direction and both extend in the left-to-right direction;

[0007] A unit flow channel is disposed between the first channel and the second channel. The unit flow channel corresponds to a group of objects to be cooled. The group of objects to be cooled includes one object to be cooled or multiple objects to be cooled arranged at intervals along the front-back direction. The liquid inlet end of the unit flow channel is disposed at the middle of the object to be cooled and is connected to the first channel. The liquid outlet end of the unit flow channel is disposed at the edge of the object to be cooled and is connected to the second channel, so that the coolant first flows into the middle of the unit flow channel and then flows out from the edge of the unit flow channel.

[0008] Furthermore, the unit flow channel includes:

[0009] The first flow channel has an inlet end connected to the first channel and an outlet end connected to the second channel. The first flow channel travels back and forth between the first channel and the second channel and is offset to the left.

[0010] The second flow channel has its inlet end connected to the first channel and its outlet end connected to the second channel. The second flow channel travels back and forth between the first channel and the second channel and is offset to the right.

[0011] The first flow channel and the second flow channel are both formed in a serpentine shape, with their inlet ends arranged adjacent to each other and their outlet ends arranged opposite each other.

[0012] Furthermore, the first flow channel and the second flow channel are mirror images of each other and correspond to the left and right parts of the object to be cooled, respectively.

[0013] Furthermore, both the first flow channel and the second flow channel include a first transition flow channel, a second transition flow channel, and a third transition flow channel connected end to end in sequence. The first transition flow channel, the second transition flow channel, and the third transition flow channel are distributed sequentially from the center to the edge, and all extend along the front-back direction.

[0014] Furthermore, the first transition channel is formed as a serpentine channel.

[0015] Furthermore, the first transition channel includes a plurality of strip channels that are spaced apart along the front-to-back direction and connected end to end in sequence, and the strip channels extend along the left-to-right direction.

[0016] Furthermore, the depth of the first transition channel is lower than the depth of the third transition channel.

[0017] Furthermore, the depths of the first transition channel, the second transition channel, and the third transition channel gradually increase.

[0018] Furthermore, the liquid cooling plate also includes:

[0019] A separator is provided in the middle of the upstream flow channel and extends along the shape of the upstream flow channel. The upstream flow channel includes a first transition channel, or a first transition channel and a second transition channel.

[0020] Furthermore, the substrate is made of copper or aluminum. Due to the above technical solution, this utility model has the following beneficial effects:

[0021] According to the liquid cooling plate of this utility model, a cover plate covers the upper surface of a substrate to form a liquid cooling plate. An object to be cooled is placed on the lower surface of the substrate or the upper surface of the cover plate, enabling heat dissipation from the object. Coolant flows into a first channel from the inlet, then into the middle of a unit flow channel (corresponding to the middle of the object to be cooled), then flows out from the edge of the unit flow channel (corresponding to the edge of the object to be cooled) to a second channel, and finally flows from the second channel to the outlet. The initially lower-temperature coolant preferentially dissipates heat from the central area of ​​the object to be cooled, where heat generation is high. After heat dissipation from the central area, the higher-temperature coolant then dissipates heat from the edges of the object to be cooled, where heat generation is low. This improves the utilization rate of heat dissipation and enhances the temperature uniformity of the object to be cooled. Attached Figure Description

[0022] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0023] Figure 1 This is a structural diagram of a liquid cooling plate for centralized heat dissipation according to an embodiment of the present invention;

[0024] Figure 2 This is a structural diagram of the substrate according to the first embodiment of the present invention;

[0025] Figure 3 yes Figure 2 Top view of the substrate in the embodiment;

[0026] Figure 4 yes Figure 3 Top view of the substrate in the embodiment without the separator strips;

[0027] Figure 5 This is a structural diagram of the substrate according to the second embodiment of the present invention;

[0028] Figure 6 yes Figure 4 Top view of the substrate in the embodiment;

[0029] Figure 7 yes Figure 6 A top view of the substrate in the embodiment with the separator strips removed.

[0030] Figure label:

[0031] 100, Cover plate; 200, Substrate; 210, First channel; 220, Second channel; 230, Unit flow channel; 230a, First transition flow channel; 230b, Second transition flow channel; 230ba, Strip flow channel; 230c, Third transition flow channel; 231, First flow channel; 232, Second flow channel; 240, Liquid outlet. Detailed Implementation

[0032] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0033] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0034] The following describes a liquid cooling plate for centralized heat dissipation according to an embodiment of the present invention.

[0035] like Figures 1 to 7 As shown, the liquid cooling plate of this utility model embodiment includes a substrate 200 and a cover plate 100 covering the upper surface of the substrate 200. The lower surface of the substrate 200 or the upper surface of the cover plate 100 is used to set the object to be cooled. The substrate 200 includes an inlet hole and an outlet hole 240 for supplying coolant. A cooling channel is formed on the upper surface of the substrate 200.

[0036] Alternatively, the substrate 200 may be made of copper or aluminum.

[0037] like Figure 1 As shown, the upper surface of the substrate 200 is covered with a cover plate 100 to form a liquid cooling plate. An object to be cooled is disposed on the lower surface of the substrate 200 or the upper surface of the cover plate 100, which can dissipate heat from the object to be cooled.

[0038] The cooling channel includes a first channel 210, a second channel 220, and a unit flow channel 230.

[0039] First, let's describe the first channel 210 and the second channel 220. The first channel 210 connects to the liquid inlet, and the second channel 220 connects to the liquid outlet 240. The first channel 210 and the second channel 220 are spaced apart in the front-to-back direction and both extend in the left-to-right direction. The front-to-back and left-to-right directions are... Figure 1 , Figure 2 and Figure 5 direction shown.

[0040] like Figure 2 As shown, the first channel 210 is connected to the liquid inlet, and the second channel 220 is connected to the liquid outlet 240. The coolant flows into the first channel 210 from the liquid inlet, and flows from the second channel 220 to the liquid outlet 240, and then flows out of the liquid cooling plate.

[0041] Next, the unit flow channel 230 will be described. The unit flow channel 230 is disposed between the first channel 210 and the second channel 220. The unit flow channel 230 corresponds to a group of objects to be cooled. The group of objects to be cooled includes one object to be cooled, or multiple objects to be cooled arranged at intervals along the front-back direction. The liquid inlet of the unit flow channel 230 is disposed at the middle of the object to be cooled, and the liquid outlet of the unit flow channel 230 is disposed at the edge of the object to be cooled, so that the coolant first flows into the middle of the unit flow channel 230 and then flows out from the edge of the unit flow channel 230.

[0042] like Figure 2 and Figure 5 As shown, the unit flow channel 230 can cool one object to be cooled, or it can cool two or three objects to be cooled that are spaced apart.

[0043] Coolant flows from the first channel 210 into the middle of the unit flow channel 230 (corresponding to the middle of the object to be cooled), and flows out from the edge of the unit flow channel 230 (corresponding to the edge of the object to be cooled) to the second channel 220. The initially lower-temperature coolant preferentially dissipates heat from the high-heat-generating area in the middle of the object to be cooled. After dissipating heat from the middle of the object, the higher-temperature coolant then dissipates heat from the low-heat-generating areas at the edges of the object. This improves the utilization rate of heat dissipation (avoiding the conventional situation where excessive heat dissipation occurs at the edges of the object to be cooled to meet the heat dissipation needs of the middle) and improves the temperature uniformity of the object to be cooled.

[0044] The above-described centralized heat dissipation liquid cooling plate has a cover plate 100 covering the upper surface of the substrate 200 to form a liquid cooling plate. An object to be cooled is placed on the lower surface of the substrate 200 or the upper surface of the cover plate 100, enabling heat dissipation from the object. Coolant flows into the first channel 210 from the inlet hole, then into the middle of the unit flow channel 230 (corresponding to the middle of the object to be cooled), then flows out from the edge of the unit flow channel 230 (corresponding to the edge of the object to be cooled) to the second channel 220, and finally flows from the second channel 220 to the outlet hole 240. The initially lower-temperature coolant preferentially dissipates heat from the central area of ​​the object to be cooled, where heat generation is high. After dissipating heat from the central area, the higher-temperature coolant then dissipates heat from the edges of the object to be cooled, where heat generation is low. This improves the utilization rate of heat dissipation and enhances the temperature uniformity of the object to be cooled.

[0045] In some embodiments of this utility model, the unit flow channel 230 includes a first flow channel 231 and a second flow channel 232. The inlet end of the first flow channel 231 is connected to the first channel 210 and its outlet end is connected to the second channel 220. The first flow channel 231 travels back and forth between the first channel 210 and the second channel 220 and is offset to the left. The inlet end of the second flow channel 232 is connected to the first channel 210 and its outlet end is connected to the second channel 220. The second flow channel 232 travels back and forth between the first channel 210 and the second channel 220 and is offset to the right. Both the first flow channel 231 and the second flow channel 232 are formed in a serpentine shape, with their inlet ends adjacent to each other and their outlet ends facing away from each other.

[0046] like Figure 3 As shown, the inlet end of the first flow channel 231 is connected to the first channel 210, then moves towards the second channel 220, turns left, then moves towards the first channel 210, turns left again, and then moves towards and connects to the second channel 220. The inlet end of the second flow channel 232 is connected to the first channel 210, then moves towards the second channel 220, turns right, then moves towards the first channel 210, turns right again, and then moves towards and connects to the second channel 220.

[0047] This increases the contact area between the unit flow channel 230 and the coolant, improves heat dissipation efficiency, and creates a temperature gradient in the coolant that corresponds to the heat generation gradient of the object to be cooled, thereby increasing the utilization rate of heat dissipation.

[0048] Furthermore, the first flow channel 231 and the second flow channel 232 are mirror images of each other and correspond to the left and right parts of the object to be cooled, respectively.

[0049] The mirrored configuration of the first flow channel 231 and the second flow channel 232 can make the flow channel distribution relatively uniform, thereby increasing the uniformity of heat dissipation.

[0050] In some embodiments of this utility model, the first flow channel 231 and the second flow channel 232 each include a first transition flow channel 230a, a second transition flow channel 230b and a third transition flow channel 230c connected end to end in sequence. The first transition flow channel 230a, the second transition flow channel 230b and the third transition flow channel 230c are distributed from the middle to the edge in sequence, and all extend along the front-back direction.

[0051] like Figures 2 to 7 As shown, both the first flow channel 231 and the second flow channel 232 include a first transition flow channel 230a, a second transition flow channel 230b, and a third transition flow channel 230c.

[0052] Figure 3 The first transition channel 230a in the middle is formed into a strip shape. Figure 6 The first transition channel 230a in the middle is formed in a serpentine shape. Figures 2 to 7 The second transition channel 230b and the third transition channel 230c are both formed in a strip shape. As a result, the first channel 231 and the second channel 232 can be formed with simple structures, which is convenient for manufacturing.

[0053] In some embodiments of this utility model, the first transition channel 230a is formed as a serpentine channel.

[0054] like Figures 5 to 7 As shown, the first transition channel 230a is formed as a serpentine channel, which can increase the heat dissipation area in the middle and further increase the heat dissipation in the middle of the object to be cooled.

[0055] Furthermore, the first transition channel 230a includes a plurality of strip channels 230ba that are spaced apart along the front-back direction and connected end to end in sequence, and the strip channels 230ba extend along the left-right direction.

[0056] like Figure 6 As shown, the first transition channel 230a includes multiple strip channels 230ba extending in the front-to-back direction, which can increase the heat dissipation area of ​​the first transition channel 230a.

[0057] Optionally, the length of the strip channel 230ba can be determined according to the area of ​​the object to be cooled that generates a lot of heat, so that the first transition channel 230a can better cover the area of ​​the object to be cooled that generates a lot of heat.

[0058] In some embodiments of this utility model, the depth of the first transition channel 230a is lower than the depth of the third transition channel 230c.

[0059] The first transition channel 230a has a shallow depth, which increases the coolant flow rate and improves heat dissipation efficiency. The third transition channel 230c has a greater depth, which reduces flow resistance and energy consumption.

[0060] Optionally, the depth of the middle part of the first transition channel 230a in the front-back direction is lower than the depth of the two ends of the first transition channel 230a in the front-back direction.

[0061] Therefore, heat dissipation can be concentrated in the middle of the front and back of the object to be cooled (the central area where the heat generation of the object is the highest), thus improving the heat dissipation utilization rate.

[0062] Furthermore, the depths of the first transition channel 230a, the second transition channel 230b, and the third transition channel 230c gradually increase.

[0063] This allows for the formation of a gradient with gradually increasing depth (corresponding to the gradual decrease in heat generation from the center to the edge of the object to be cooled), where the depth of the first transition channel 230a is lower than the depth of the second transition channel 230b, and the depth of the second transition channel 230b is lower than the depth of the third transition channel 230c, thereby further increasing the utilization rate of heat dissipation.

[0064] In some embodiments of this utility model, the liquid cooling plate further includes a partition strip. The partition strip is disposed in the middle of the upstream flow channel and extends along the outer shape of the upstream flow channel. The upstream flow channel includes a first transition flow channel 230a, or a first transition flow channel 230a and a second transition flow channel 230b.

[0065] like Figure 4 As shown, a separator strip is provided in the middle of the first transition channel 230a and the second transition channel 230b. Figure 7 As shown, a partition strip is provided in the middle of the first transition channel 230a. The partition strip increases the heat dissipation area, further improving the heat dissipation efficiency in the middle of the object to be cooled. Furthermore, the partition strip allows the upstream channel to be divided into two sub-channels, and blockage in one sub-channel does not affect the other, reducing the risk of blockage.

[0066] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A liquid cooling plate that concentrates heat dissipation, characterized by, The liquid cooling plate includes a substrate and a cover plate covering the upper surface of the substrate. The lower surface of the substrate or the upper surface of the cover plate is used to mount an object to be cooled. The substrate includes an inlet hole and an outlet hole for supplying coolant. A cooling channel is formed on the upper surface of the substrate, and the cooling channel includes: A first channel and a second channel, wherein the first channel is connected to the liquid inlet and the second channel is connected to the liquid outlet, the first channel and the second channel are spaced apart in the front-to-back direction and both extend in the left-to-right direction; A unit flow channel is disposed between the first channel and the second channel. The unit flow channel corresponds to a group of objects to be cooled. The group of objects to be cooled includes one object to be cooled or multiple objects to be cooled arranged at intervals along the front-back direction. The liquid inlet end of the unit flow channel is disposed at the middle of the object to be cooled and is connected to the first channel. The liquid outlet end of the unit flow channel is disposed at the edge of the object to be cooled and is connected to the second channel, so that the coolant first flows into the middle of the unit flow channel and then flows out from the edge of the unit flow channel.

2. The liquid cooling plate for centralized heat dissipation according to claim 1, characterized in that, The unit flow channel includes: The first flow channel has an inlet end connected to the first channel and an outlet end connected to the second channel. The first flow channel travels back and forth between the first channel and the second channel and is offset to the left. The second flow channel has its inlet end connected to the first channel and its outlet end connected to the second channel. The second flow channel travels back and forth between the first channel and the second channel and is offset to the right. The first flow channel and the second flow channel are both formed in a serpentine shape, with their inlet ends arranged adjacent to each other and their outlet ends arranged opposite each other.

3. The liquid cooling plate for centralized heat dissipation according to claim 2, characterized in that, The first flow channel and the second flow channel are mirror images of each other and correspond to the left and right sides of the object to be cooled, respectively.

4. The liquid cooling plate for centralized heat dissipation according to claim 3, characterized in that, Both the first flow channel and the second flow channel include a first transition flow channel, a second transition flow channel and a third transition flow channel connected end to end in sequence. The first transition flow channel, the second transition flow channel and the third transition flow channel are distributed from the middle to the edge in sequence, and all extend in the front-back direction.

5. The liquid cooling plate for centralized heat dissipation according to claim 4, characterized in that, The first transition channel is formed as a serpentine channel.

6. The liquid cooling plate for centralized heat dissipation according to claim 5, characterized in that, The first transition channel includes a plurality of strip channels that are spaced apart along the front-to-back direction and connected end to end in sequence, and the strip channels extend along the left-to-right direction.

7. The liquid cooling plate for centralized heat dissipation according to claim 6, characterized in that, The depth of the first transition channel is lower than the depth of the third transition channel.

8. The liquid cooling plate for centralized heat dissipation according to claim 7, characterized in that, The depths of the first transition channel, the second transition channel, and the third transition channel gradually increase.

9. The liquid cooling plate for centralized heat dissipation according to claim 4, characterized in that, The liquid cooling plate also includes: A separator is provided in the middle of the upstream flow channel and extends along the shape of the upstream flow channel. The upstream flow channel includes a first transition channel, or a first transition channel and a second transition channel.

10. The liquid cooling plate for centralized heat dissipation according to claim 9, characterized in that, The substrate is made of copper or aluminum.

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