Cold plate and heat dissipation assembly

Abstract

The embodiment of the utility model relates to a cold plate and a heat dissipation assembly. The cold plate comprises a liquid inlet, a liquid outlet, a main flow channel and an auxiliary flow channel. Wherein one end of the main flow channel is communicated with the liquid inlet, the other end of the main flow channel is communicated with the liquid outlet, at least part of the main flow channel is wavy, and the wavy flow channel of the main flow channel is provided with a plurality of wave crest sections and wave trough sections which are alternately connected; the auxiliary flow channel comprises a first flow channel and a second flow channel, the first flow channel is communicated with a plurality of wave crest sections of the main flow channel, and the second flow channel is communicated with a plurality of wave trough sections of the main flow channel. According to the embodiment of the invention, the main flow channel and the auxiliary flow channel which are matched with each other are designed on the cold plate, so that the heat exchange capacity between the cold plate and the radar assembly is improved, the pressure resistance of the flow channels in the cold plate can be reduced, and the heat dissipation effect of the cold plate on the radar assembly is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of liquid cooling for radar antennas, and in particular, to a cold plate and a heat dissipation assembly. Background Art

[0002] As the number of unit chips integrated in radar components gradually increases, the heat flux density of radar components also increases during operation, which will cause the chip temperature to gradually rise. However, as the chip temperature rises, the reliability of radar operation will decrease; especially in the case of high integration and small space intervals, it is more difficult to dissipate heat from radar components, and the impact on radar operation is more serious.

[0003] In the related art, generally, a cold and hot exchange structure is used to dissipate heat from the radar. There are some flow channels in the cold and hot exchange structure. By introducing a refrigerant fluid into the flow channels, heat exchange is carried out between the refrigerant fluid and the radar components, and then heat dissipation and temperature reduction of the radar components are achieved. However, in the existing flow channel design of the cold and hot exchange structure, there are problems such as too single flow channel setting resulting in poor heat dissipation effect on the radar components, or too complex flow channel setting causing too large internal resistance of the flow channels and affecting the refrigerant circulation rate, thereby affecting the heat dissipation effect on the radar components.

[0004] Therefore, it is necessary to improve one or more problems existing in the above related technical solutions.

[0005] It should be noted that the information disclosed in the above background art section is only used to enhance the understanding of the background of the present disclosure, and thus may include information that does not constitute the prior art known to those of ordinary skill in the art. Summary of the Utility Model

[0006] The purpose of the embodiments of the present disclosure is to provide a cold plate to improve the heat dissipation effect of the cold plate on radar components.

[0007] According to the embodiments of the present disclosure, a cold plate is provided, including:

[0008] An inlet;

[0009] An outlet;

[0010] A main flow channel, one end of the main flow channel is connected to the inlet, and the other end is connected to the outlet. At least part of the flow channel of the main flow channel is wavy, and the wavy flow channel of the main flow channel has a plurality of alternately connected peak segments and valley segments;

[0011] An auxiliary flow channel, including a first flow channel and a second flow channel, the first flow channel is connected to a plurality of the peak segments of the main flow channel, and the second flow channel is connected to a plurality of the valley segments of the main flow channel.

[0012] In an exemplary embodiment of the present disclosure, a plurality of the wavy channels are arranged at intervals along a first direction and are connected in series, and the first direction is perpendicular to the extending direction of the wavy channels;

[0013] Wherein, along the first direction, two of the wavy channels located on both sides are respectively communicated with the liquid inlet and the liquid outlet.

[0014] In an exemplary embodiment of the present disclosure, the main channel further includes a plurality of connecting channels, and along the first direction, one of the connecting channels is connected between two adjacent wavy channels.

[0015] In an exemplary embodiment of the present disclosure, the connecting channel is in a curved shape.

[0016] In an exemplary embodiment of the present disclosure, the auxiliary channel includes a plurality of first channels and a plurality of second channels, the wavy channel has a plurality of alternately connected peak segments and valley segments, and a plurality of the peak segments of each wavy channel are communicated with a corresponding one of the first channels, and a plurality of the valley segments of each wavy channel are communicated with a corresponding one of the second channels.

[0017] In an exemplary embodiment of the present disclosure, the first channel and / or the second channel is a straight channel and extends along a second direction, and the second direction is perpendicular to the first direction.

[0018] In an exemplary embodiment of the present disclosure, the liquid inlet includes a first liquid inlet port and a second liquid inlet port, and one end of the main channel communicates with the first liquid inlet port and the second liquid inlet port.

[0019] In an exemplary embodiment of the present disclosure, the liquid outlet includes a first liquid outlet port and a second liquid outlet port, and the other end of the main channel communicates with the first liquid outlet port and the second liquid outlet port.

[0020] In an exemplary embodiment of the present disclosure, the cold plate includes a lower bottom plate and an upper cover plate, the main channel and the auxiliary channel are formed between the lower bottom plate and the upper cover plate, and the lower bottom plate and the upper cover plate are welded together.

[0021] According to a second aspect of the embodiments of the present disclosure, there is also provided a heat dissipation assembly, including a plurality of the above-mentioned cold plates, and the heat dissipation assembly further includes a water inlet pipe, a water outlet pipe, a plurality of first connecting pipes and a plurality of second connecting pipes;

[0022] A plurality of the cold plates are arranged at intervals. The water inlet pipe is communicated with the liquid inlet of one of the cold plates, and the water outlet pipe is communicated with the liquid outlet of one of the cold plates. Both ends of each first connecting pipe are respectively connected to the liquid inlets of two of the cold plates, and both ends of each second connecting pipe are respectively connected to the liquid outlets of two of the cold plates.

[0023] The technical solutions provided by the embodiments of the present disclosure may include the following beneficial effects:

[0024] In the embodiments of the present disclosure, on the one hand, by arranging a wavy main flow channel and auxiliary flow channels communicated with the main flow channel in the cold plate, the flow channels on the cold plate are more evenly distributed. Furthermore, during the process of the refrigerant fluid flowing through the cold plate, the heat exchange amount between the cold plate and the radar component is larger, and the heat dissipation effect is better. On the other hand, by setting the first flow channel of the auxiliary flow channel to communicate with multiple peak segments of the main flow channel and setting the second flow channel of the auxiliary flow channel to communicate with multiple valley segments of the main flow channel, when the refrigerant flows to the wavy flow channel of the main flow channel, especially at turning point positions such as peaks and valleys, it can be shunted and dredged through the first flow channel or the second flow channel. This is beneficial to reducing the flow channel pressure resistance in the cold plate, ensuring the flow velocity of the refrigerant fluid in the cold plate, and further ensuring the heat dissipation effect on the radar component. In this embodiment, by designing the matching main flow channel and auxiliary flow channels on the cold plate, while increasing the heat exchange amount between the cold plate and the radar component, the flow channel pressure resistance in the cold plate can also be reduced, thereby improving the heat dissipation effect of the cold plate on the radar component.

[0025] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings herein are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with the present disclosure, and are used together with the specification to explain the principles of the present disclosure. Obviously, the drawings in the following description are only some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0027] Figure 1 Showing a schematic internal structure diagram of a cold plate in an exemplary embodiment of the present disclosure;

[0028] Figure 2 Showing a schematic structural diagram of the lower bottom plate and the upper cover plate of a cold plate in an exemplary embodiment of the present disclosure;

[0029] Figure 3 Showing a schematic structural diagram of a heat dissipation component in an exemplary embodiment of the present disclosure Figure 1 ;

[0030] Figure 4Schematic structure of the heat dissipation component in an exemplary embodiment of the present disclosure Figure 2 。

[0031] Reference numerals:

[0032] 100, lower bottom plate; 110, main flow channel; 111, wavy flow channel; 1111, wave crest section; 1112, wave trough section; 112, connecting flow channel; 121, first flow channel; 122, second flow channel; 131, first liquid inlet port; 132, second liquid inlet port; 141, first liquid outlet port; 142, second liquid outlet port; 200, upper cover plate; 210, contact part; 300, water inlet pipe; 400, water outlet pipe; 500, first connecting pipe; 600, second connecting pipe; 700, first plugging member; 800, second plugging member. Detailed implementation manners

[0033] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be more complete and comprehensive, and will fully convey the concept of the example embodiments to those skilled in the art. The features, structures, or characteristics described may be combined in any suitable manner in one or more embodiments.

[0034] In addition, the drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus repeated descriptions thereof will be omitted. Some of the block diagrams shown in the drawings are functional entities and do not necessarily correspond to physically or logically independent entities. These functional entities may be implemented in software form, or in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices.

[0035] A cold plate is provided in this example embodiment. Referring to Figure 1 as shown, the cold plate includes a liquid inlet, a liquid outlet, a main flow channel 110, and an auxiliary flow channel; wherein, one end of the main flow channel 110 communicates with the liquid inlet, and the other end communicates with the liquid outlet. At least part of the flow channel of the main flow channel 110 is wavy, and the wavy flow channel of the main flow channel 110 has a plurality of alternately connected wave crest sections 1111 and wave trough sections 1112; the auxiliary flow channel includes a first flow channel 121 and a second flow channel 122. The first flow channel 121 communicates with a plurality of wave crest sections 1111 of the main flow channel 110, and the second flow channel 122 communicates with a plurality of the wave trough sections 1112 of the main flow channel 110.

[0036] Through the above cold plate, on the one hand, by arranging a wavy main flow channel 110 and auxiliary flow channels communicating with the main flow channel 110 in the cold plate, the flow channels on the cold plate are more evenly distributed. As a result, during the process of the refrigerant fluid flowing through the cold plate, the heat exchange amount between the cold plate and the radar component is larger, and the heat dissipation effect is better. On the other hand, by setting the first flow channel 121 of the auxiliary flow channel to communicate with multiple peak segments 1111 of the main flow channel 110 and setting the first flow channel 121 of the auxiliary flow channel to communicate with multiple valley segments 1112 of the main flow channel 110, when the refrigerant fluid flows to the wavy flow channel of the main flow channel 110, especially at the inflection point flow channel positions such as peaks and valleys, it can be branched and dredged through the first flow channel 121 or the second flow channel 122. This is beneficial to reducing the flow channel pressure resistance in the cold plate, ensuring the flow rate of the refrigerant fluid in the cold plate, and further ensuring the heat dissipation effect on the radar component. In this embodiment, by designing the matching main flow channel 110 and auxiliary flow channels on the cold plate, while increasing the heat exchange amount between the cold plate and the radar component, the flow channel pressure resistance in the cold plate can also be reduced, thereby improving the heat dissipation effect of the cold plate on the radar component.

[0037] Next, reference will be made to Figure 1 and Figure 2 to describe the above cold plate in the exemplary embodiment in more detail.

[0038] In one embodiment, the main flow channel 110 includes a plurality of wavy flow channels 111, and the plurality of wavy flow channels 111 are arranged at intervals along a first direction and are connected in series. The first direction is perpendicular to the extension direction of the wavy flow channels 111. Among them, along the first direction, the two wavy segments on both sides are respectively communicated with the liquid inlet and the liquid outlet. The first direction refers to the direction indicated by the arrow ab in Figure 1 and the extension direction of the wavy flow channels 111 refers to the direction indicated by the arrow cd in Figure 1 .

[0039] By designing the main flow channel 110 to have a plurality of wavy flow channels 111 arranged at intervals along the first direction and connected in series as described above, a uniform heat dissipation area is formed on the cold plate. When dissipating heat from the radar component, the radar component can transfer the heat generated by it to the entire heat dissipation area on the cold plate, avoiding the phenomenon of local overheating or overcooling and improving the heat dissipation effect.

[0040] Furthermore, the main flow channel 110 further includes a plurality of connecting flow channels 112. Along the first direction, one connecting flow channel 112 is connected between two adjacent wavy flow channels 111, so that the series-connected wavy flow channels 111 can be communicated through the connecting flow channel 112. As a result, after the refrigerant fluid input from the liquid inlet passes through a plurality of wavy flow channels 111 in sequence, it flows out from the liquid outlet.

[0041] Optionally, the connecting flow channel 112 is curved. Designing the connecting flow channel 112 to be curved is beneficial to reducing the impact of the refrigerant fluid and improving the flow efficiency of the refrigerant fluid.

[0042] It should be noted that, with reference to Figure 1 , in this embodiment, the liquid inlet and the liquid outlet can be arranged along the diagonal direction of the cold plate, or can be arranged on the same side of the cold plate. This embodiment does not limit the specific positions of the liquid inlet and the liquid outlet, as long as it is ensured that the liquid inlet and the liquid outlet are respectively connected to both ends of the main flow channel 110, so that the refrigerant fluid can enter the flow channel in the cold plate from the liquid inlet and flow out of the flow channel in the cold plate from the liquid outlet.

[0043] It should also be noted that the multiple connecting flow channels 112 on the cold plate are used to connect the multiple wavy flow channels 111 in series. With reference to Figure 1 shown in, the multiple wavy flow channels 111 and the multiple connecting flow channels 112 are alternately connected in sequence to form a serpentine main flow channel 110 on the cold plate.

[0044] Furthermore, the auxiliary flow channel includes multiple first flow channels 121 and multiple second flow channels 122. The wavy flow channel 111 has multiple alternately connected peak segments 1111 and valley segments 1112. The multiple peak segments 1111 of each wavy flow channel 111 are connected to a corresponding first flow channel 121, and the multiple valley segments 1112 of each wavy flow channel 111 are connected to a corresponding second flow channel 122.

[0045] The above-mentioned method connects the multiple peak segments 1111 of the wavy flow channel 111 through the first flow channel 121 of the auxiliary flow channel, and connects the multiple valley segments 1112 of the wavy flow channel 111 through the second flow channel 122 of the auxiliary flow channel to conduct diversion and dredging at the inflection point flow channel positions such as peaks and valleys. This is beneficial to reducing the flow resistance in the cold plate flow channel, that is, a more uniform heat dissipation area is formed on the cold plate through the multiple wavy flow channels 111 and the multiple first flow channels 121 and multiple second flow channels 122, and it can also ensure the flow velocity of the refrigerant fluid in the cold plate, thereby improving the heat dissipation effect of the cold plate on the radar component.

[0046] Optionally, the first flow channel 121 and / or the second flow channel 122 is a straight flow channel and extends along the second direction, and the second direction is perpendicular to the first direction. By designing the first flow channel 121 and the second flow channel 122 as straight flow channels, the resistance of the refrigerant fluid flow is smaller, which is beneficial for the refrigerant fluid to quickly flow to the next peak segment 1111 through the first flow channel 121 when flowing to the peak segment 1111 of the wavy flow channel 111, and for the refrigerant fluid to quickly flow to the next valley segment 1112 through the second flow channel 122 when flowing to the valley segment 1112 of the wavy flow channel 111.

[0047] Optionally, the channel width of the wavy channel 111 is greater than that of the first channel 121; the channel width of the wavy channel 111 is greater than that of the second channel 122.

[0048] Optionally, the channel width of the wavy channel 111 is 5 mm, the channel width of the first channel 121 is 2 mm, and the channel width of the second channel 122 is 2 mm.

[0049] In one embodiment, the liquid inlet includes a first liquid inlet port 131 and a second liquid inlet port 132, and one end of the main channel 110 communicates with the first liquid inlet port 131 and the second liquid inlet port 132. By designing the liquid inlet into two sub-liquid inlet ports, namely the first liquid inlet port 131 and the second liquid inlet port 132, it is not only convenient for the cold plate to be connected to multiple refrigerant supply devices, but also convenient for flexible connection between multiple cold plates when using multiple cold plates to dissipate heat from the radar component later.

[0050] In one embodiment, the liquid outlet includes a first liquid outlet port 141 and a second liquid outlet port 142, and the other end of the main channel 110 communicates with the first liquid outlet port 141 and the second liquid outlet port 142. By designing the liquid outlet into two sub-liquid outlet ports, namely the first liquid outlet port 141 and the second liquid outlet port 142, it is not only convenient for the cold plate to be connected to multiple refrigerant recovery devices, but also convenient for flexible connection between multiple cold plates when using multiple cold plates to dissipate heat from the radar component later.

[0051] In one embodiment, refer to Figure 2 , the cold plate includes a lower bottom plate 100 and an upper cover plate 200. The main channel 110 and the auxiliary channel are formed between the lower bottom plate 100 and the upper cover plate 200, and the lower bottom plate 100 and the upper cover plate 200 are welded together. The lower bottom plate 100 and the upper cover plate 200 are fixed by welding to ensure the firm structure of the cold plate.

[0052] Optionally, the upper cover plate 200 can be welded to the lower bottom plate 100 by vacuum brazing process.

[0053] In one embodiment, a contact portion 210 is provided on the outer surface of the upper cover plate 200. The contact portion 210 is used to abut against the radar component to perform heat exchange with the radar component, so as to dissipate heat from the radar component.

[0054] Furthermore, in this exemplary embodiment, a heat dissipation assembly is further provided. Refer to Figure 3 and Figure 4 as shown. The heat dissipation assembly includes the above-mentioned multiple cold plates, as well as a water inlet pipe 300, a water outlet pipe 400, multiple first connecting pipes 500 and multiple second connecting pipes 600;

[0055] Multiple cold plates are arranged at intervals. The inlet pipe 300 is communicated with the liquid inlet of one cold plate, and the outlet pipe 400 is communicated with the liquid outlet of one cold plate. Both ends of each first connecting pipe 500 are respectively connected to the liquid inlets of two cold plates, and both ends of each second connecting pipe 600 are respectively connected to the liquid outlets of two cold plates.

[0056] Through the above heat dissipation component, multiple cold plates are connected in parallel through multiple first connecting pipes 500 and multiple second connecting pipes 600. In this way, compared with the series connection of multiple cold plates, the pressure drop is lower, and compared with the traditional parallel connection of multiple cold plates, fewer fittings are required, saving costs.

[0057] In one embodiment, multiple cold plates can be arranged at intervals along the third direction. The third direction is perpendicular to the first direction and the second direction, and the third direction is the thickness direction of the cold plate. Refer to Figure 3 the arrow ef shown in the figure. By arranging multiple cold plates along the third direction, it is beneficial to save the space occupied by the heat dissipation component.

[0058] Optionally, in the third direction, the liquid inlets on two adjacent cold plates can be connected through a first connecting pipe 500. Specifically, the liquid inlets on the cold plate include a first liquid inlet port 131 and a second liquid inlet port 132. Among them, on two adjacent cold plates, one end of the first connecting pipe 500 is connected to the first liquid inlet port 131 of one cold plate, and the other end of the first connecting pipe 500 is connected to the second liquid inlet port 132 of the other cold plate.

[0059] Optionally, in the third direction, the liquid outlets on two adjacent cold plates can be connected through a second connecting pipe 600. Specifically, the liquid outlets on the cold plate include a first liquid outlet port 141 and a second liquid outlet port 142. Among them, on two adjacent cold plates, one end of the second connecting pipe 600 is connected to the first liquid outlet port 141 of one cold plate, and the other end of the second connecting pipe 600 is connected to the second liquid outlet port 142 of the other cold plate.

[0060] The above settings make the refrigerant fluid converge at the liquid inlet of each cold plate, so that the flow rate of the refrigerant fluid distributed to each cold plate is basically the same. Furthermore, the flow velocity of the refrigerant fluid inside the cold plate is basically the same, realizing that the pressure difference between the liquid inlet and the liquid outlet of each cold plate is basically the same.

[0061] In one embodiment, the heat dissipation component further includes a first plugging member 700 and a second plugging member 800. The first plugging member 700 is used to plug the liquid inlet of the cold plate at the end in the refrigerant flow direction, which may be the first liquid inlet port 131 or the second liquid inlet port 132, without limitation here. The second plugging member 800 is used to plug the liquid outlet of the cold plate at the beginning in the refrigerant flow direction, which may be the first liquid outlet port 141 or the second liquid outlet port 142, without limitation here. The first plugging member 700 and the second plugging member 800 ensure that the refrigerant fluid flows through multiple cold plates in the heat dissipation component simultaneously.

[0062] It should be noted that although the steps of the method in the present disclosure are described in a specific order in the drawings, this does not require or imply that these steps must be performed in that specific order, or that all the steps shown must be performed to achieve the desired result. Additionally or alternatively, some steps may be omitted, multiple steps may be combined into one step for execution, and / or one step may be decomposed into multiple steps for execution, etc. Also, it is easily understood that these steps may be executed synchronously or asynchronously, for example, in multiple modules / processes / threads.

[0063] Those skilled in the art will readily conceive of other embodiments of the present disclosure after considering the specification and practicing the utility model disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure, which follow the general principles of the present disclosure and include well-known knowledge or conventional technical means in the technical field not disclosed in the present disclosure. The specification and embodiments are only regarded as exemplary, and the true scope and spirit of the present disclosure are pointed out by the appended claims.

Claims

1. A cold plate, characterized in that, Comprising: Liquid inlet; Liquid outlet; Main flow channel, one end of the main flow channel is communicated with the liquid inlet, the other end is communicated with the liquid outlet, at least part of the flow channel of the main flow channel is wavy, and the wavy flow channel of the main flow channel has a plurality of alternately connected peak segments and valley segments; Auxiliary flow channel, including a first flow channel and a second flow channel, the first flow channel is communicated with a plurality of the peak segments of the main flow channel, and the second flow channel is communicated with a plurality of the valley segments of the main flow channel.

2. The cold plate according to claim 1, wherein The main flow channel includes a plurality of wavy flow channels, the plurality of wavy flow channels are arranged at intervals along a first direction and are connected in series, and the first direction is perpendicular to the extension direction of the wavy flow channel; Wherein, along the first direction, two of the wavy flow channels located on both sides are respectively communicated with the liquid inlet and the liquid outlet.

3. The cold plate according to claim 2, wherein, The main flow channel further includes a plurality of connecting flow channels, and one connecting flow channel is connected between two adjacent wavy flow channels along the first direction.

4. The cold plate according to claim 3, wherein The connecting flow channel is curved.

5. The cold plate according to claim 2, wherein The auxiliary flow channel includes a plurality of first flow channels and a plurality of second flow channels, the wavy flow channel has a plurality of alternately connected peak segments and valley segments, a plurality of the peak segments of each wavy flow channel are communicated with a corresponding first flow channel, and a plurality of the valley segments of each wavy flow channel are communicated with a corresponding second flow channel.

6. The cold plate according to claim 5, wherein The first flow channel and / or the second flow channel is a straight flow channel and extends along a second direction, and the second direction is perpendicular to the first direction.

7. The cold plate according to claim 1, characterized in that, The liquid inlet includes a first liquid inlet port and a second liquid inlet port, and one end of the main flow channel is communicated with the first liquid inlet port and the second liquid inlet port.

8. The cold plate according to claim 1 or 7, characterized in that, The liquid outlet includes a first liquid outlet port and a second liquid outlet port, and the other end of the main flow channel is communicated with the first liquid outlet port and the second liquid outlet port.

9. The cold plate according to claim 1, wherein The cold plate includes a lower bottom plate and an upper cover plate, the main flow channel and the auxiliary flow channel are formed between the lower bottom plate and the upper cover plate, and the lower bottom plate and the upper cover plate are welded and connected.

10. A heat dissipation component, characterized in that, Including a plurality of cold plates according to any one of claims 1 to 9, the heat dissipation assembly further includes a water inlet pipe, a water outlet pipe, and a plurality of first connecting pipes and a plurality of second connecting pipes; The plurality of cold plates are arranged at intervals, the water inlet pipe is communicated with the liquid inlet of one cold plate, the water outlet pipe is communicated with the liquid outlet of one cold plate, two ends of each first connecting pipe are respectively connected to the liquid inlets of two cold plates, and two ends of each second connecting pipe are respectively connected to the liquid outlets of two cold plates.

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