Liquid cooling plate body and liquid cooling heat dissipation plate

Abstract

The utility model provides a liquid cooling plate body and a liquid cooling heat dissipation plate. The liquid cooling plate body comprises a liquid inlet flow channel, a shunting flow channel, a parallel flow channel and a liquid outlet flow channel. One end of the liquid inlet flow channel is a smooth flow channel, and the other end of the liquid inlet flow channel is a divergent flow channel; the shunting flow channel is connected with one end of the diverging flow channel and one end of the parallel flow channel, and the other end of the parallel flow channel is connected with the liquid outlet flow channel; a flow dividing column and a plurality of flow disturbing columns are arranged in the gradually-expanding flow channel. According to the liquid cooling plate body and the liquid cooling heat dissipation plate provided by the utility model, the shunting columns and the turbulent flow columns are arranged in the liquid inlet flow channel, and the cooling liquid is shunted twice to form a plurality of uniform branches, so that the flow of the cooling liquid flowing into the shunting flow channel is ensured to be balanced; the bent flow channels in the flow dividing flow channels can effectively increase the contact area of cooling liquid and the flow channels, the smooth flow channels and the parallel flow channels in the flow dividing flow channels can reduce the flow resistance of the cooling liquid, the heat dissipation efficiency is remarkably improved, and the uniform and sufficient cooling effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of power electronics technology, and in particular to a liquid cooling plate body and a liquid cooling heat dissipation plate. Background Technology

[0002] As the energy storage market continues to expand, energy storage converters are iterating and upgrading towards higher space utilization and higher power density. Against this backdrop, liquid cooling solutions, which combine high thermal conductivity with a compact structure, have become the preferred heat dissipation method for energy storage converters.

[0003] In existing high-power-density and compact energy storage converters, the internal space layout of the chassis limits the flow channels of the liquid cooling plate, which are prone to uneven current distribution. At the same time, the losses of the half-bridge module are significant in high-power-density scenarios, causing the SiC unit in the half-bridge module to rise rapidly during operation. The uneven distribution of water flow in the liquid cooling plate further aggravates the temperature difference of the parallel SiC units, resulting in uneven current distribution and affecting the service life of the half-bridge module. This issue urgently needs to be addressed. Utility Model Content

[0004] The purpose of this invention is to provide a liquid cooling plate body and a liquid cooling heat dissipation plate, which can improve heat dissipation efficiency and achieve a uniform and sufficient cooling effect.

[0005] This utility model provides a liquid-cooled plate body, including: an inlet channel, a branch channel, a parallel channel, and an outlet channel; one end of the inlet channel is a smooth channel, and the other end of the inlet channel is a gradually expanding channel; the branch channel connects one end of the gradually expanding channel and the parallel channel, and the other end of the parallel channel is connected to the outlet channel; the gradually expanding channel is provided with a branch column and a plurality of turbulence columns, and the plurality of turbulence columns are dispersed between the branch column and the branch channel.

[0006] Preferably, the flow distribution channel includes: a first flow channel, a second flow channel, a third flow channel, and a fourth flow channel; the first flow channel, the second flow channel, the third flow channel, and the fourth flow channel are all flow channels that alternate between curved flow channels and smooth flow channels, and the curved flow channels of the four flow channels are correspondingly arranged.

[0007] Preferably, adjacent curved channels in the second flow channel merge with adjacent curved channels in the corresponding third flow channel to form a confluence zone.

[0008] Preferably, the confluence zone is a smooth flow channel, and the cross-sectional area of ​​the flow channel in the confluence zone is larger than the cross-sectional area of ​​the curved flow channel.

[0009] Preferably, the parallel flow channels include: a plurality of parallel smooth flow channels.

[0010] Preferably, the curved flow channel is a wavy flow channel or an S-shaped flow channel.

[0011] Preferably, the cross section of the shunt column is long strip-shaped, and the cross section of the spoiler column is circular.

[0012] Preferably, the liquid cooling plate body is provided with a plurality of fixing holes.

[0013] Preferably, the area outside the flow channel of the liquid cooling plate body is provided with a weight reduction area.

[0014] The utility model also provides a liquid cooling heat dissipation board, include: as above described liquid cooling plate body, liquid inlet portion and liquid outlet portion, liquid inlet portion and liquid outlet portion all are fixed in the same side of liquid cooling plate body, liquid inlet portion connects one end of liquid inlet flow channel, liquid outlet flow channel connects liquid outlet portion.

[0015] The liquid cooling plate body and the liquid cooling heat dissipation board provided by the utility model can form multiple uniform branch streams after twice shunting of the cooling liquid by arranging the shunt column and the spoiler column in the liquid inlet flow channel, thereby ensuring balanced flow of the cooling liquid into the shunt flow channel, the curved flow channel in the shunt flow channel can effectively increase the contact area of the cooling liquid and the flow channel, the smooth flow channel and the parallel flow channel in the shunt flow channel can reduce the flow resistance of the cooling liquid, thereby significantly improving the heat dissipation efficiency and realizing uniform and sufficient cooling effect. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0017] Figure 1 It is a schematic view of the liquid cooling heat dissipation board of the embodiment of the utility model.

[0018] Figure 2 It is a sectional view of the liquid cooling plate body of the embodiment of the utility model.

[0019] Reference signs: liquid cooling plate body 1, liquid inlet portion 2, liquid outlet portion 3, liquid inlet flow channel 10, shunt flow channel 11, parallel flow channel 12, liquid outlet flow channel 13, shunt column 14, spoiler column 15, first flow channel 16, second flow channel 17, third flow channel 18, fourth flow channel 19, confluence area 20, fixing hole 21, weight reduction area 22. DETAILED DESCRIPTION

[0020] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that many specific details are set forth in the following description to provide a full understanding of this utility model; however, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0021] like Figure 1 As shown, this embodiment provides a liquid-cooled heat sink, including: a liquid-cooled plate body 1, a liquid inlet 2, and a liquid outlet 3.

[0022] The liquid inlet 2 and the liquid outlet 3 are both fixed on the same side of the liquid cooling plate body 1.

[0023] As an example, the material of the liquid cooling plate body 1 may be aluminum alloy.

[0024] like Figure 2 As shown, the liquid cooling plate body 1 is provided with an inlet channel 10, a branch channel 11, a parallel channel 12 and an outlet channel 13 inside.

[0025] The liquid inlet 2 is connected to one end of the liquid inlet channel 10, the diversion channel 11 is connected to the other end of the liquid inlet channel 10 and one end of the parallel channel 12, and the liquid outlet channel 13 is connected to the other end of the parallel channel 12 and the liquid outlet 3.

[0026] Specifically, the coolant flows into the inlet channel 10 through the inlet section 2, flows sequentially through the branch channel 11, the parallel channel 12, and the outlet channel 13, and is then discharged through the outlet section 3. The coolant flows within the liquid cooling plate body 1, which enables heat dissipation for electronic devices.

[0027] The liquid inlet channel 10 is provided with a flow divider column 14 and a plurality of flow turbulence columns 15. The plurality of flow turbulence columns 15 are distributed between the flow divider column 14 and the flow divider channel 11.

[0028] Preferably, one end of the inlet channel 10 is a smooth channel, which connects to the inlet section 2; the other end of the inlet channel 10 is a gradually expanding channel, which can effectively reduce the flow rate of the coolant. The diverting column 14 and the turbulence column 15 are both located within the gradually expanding channel. The coolant undergoes a first diversion via the diverting column 14, forming two uniform coolant branches; then, it undergoes a second diversion via multiple turbulence columns 15, forming multiple uniform coolant branches, which flow into the diverting channel 11. After two diversions, the coolant is dispersed into multiple uniform branches, thereby ensuring a balanced coolant flow rate into the diverting channel 11.

[0029] As an example, the number of spoiler columns 15 is six.

[0030] It can be understood that the shapes of the shunt column 14 and the turbulence column 15 can be set according to actual needs. For example, the cross section of the shunt column 14 is long strip-shaped, and the cross section of the turbulence column 15 is circular, but the present application is not limited thereto.

[0031] Preferably, the shunt flow channel 11 comprises a first flow channel 16, a second flow channel 17, a third flow channel 18 and a fourth flow channel 19.

[0032] The first flow channel 16, the second flow channel 17, the third flow channel 18 and the fourth flow channel 19 are all alternating flow channels of curved flow channels and smooth flow channels. The smooth flow channels can reduce the flow resistance of the cooling liquid, and are easy to process and save costs. It should be understood that the curved path of the curved flow channel can be set according to actual needs. As an example, the curved flow channel can be a wave-shaped flow channel, an S-shaped flow channel, etc., effectively increasing the contact area of the cooling liquid with the flow channel and significantly improving the heat dissipation effect.

[0033] Preferably, the curved flow channels in the four flow channels are correspondingly arranged, such as the corresponding arrangement of the same column in the first flow channel 16 and the second flow channel 17. Figure 2 The adjacent curved flow channels in the second flow channel 17 and the corresponding adjacent curved flow channels in the third flow channel 18 flow together to form a confluence area 20, that is, each confluence area 20 communicates with two adjacent curved flow channels in the second flow channel 17 and the third flow channel 18. After the cooling liquid enters the curved flow channel, the flow path in the second flow channel 17 and the third flow channel 18 is: after the cooling liquid flows into the curved flow channel in the second flow channel 17 and the corresponding curved flow channel in the third flow channel 18, it flows together into the confluence area 20, and then flows into the adjacent curved flow channel in the second flow channel 17 and the adjacent curved flow channel in the third flow channel 18, and then flows together into the next confluence area, and so on, which will not be described in detail.

[0034] As an example, the confluence area 20 is a smooth flow channel, and the flow channel cross-sectional area of the confluence area 20 is greater than that of the curved flow channel.

[0035] Preferably, the parallel flow channel 12 comprises a plurality of parallel smooth flow channels.

[0036] In this embodiment, the parallel flow channel 12 comprises three parallel smooth flow channels. Except for the edge flow channels of the inlet and outlet, the three smooth flow channels are straight flow channels and parallel to each other.

[0037] The cooling liquid flowing out of the four flow channels of the shunt flow channel 11 enters the three smooth flow channels of the parallel flow channel 12, flows out of the three smooth flow channels, and then flows into the outlet flow channel 13, and finally is discharged through the outlet 3.

[0038] It should be understood that the connection between each flow channel is sealed communication to prevent leakage of the cooling liquid inside the liquid cooling plate.

[0039] Preferably, the liquid cooling plate body 1 is provided with a plurality of fixing holes 21 for installing inductor modules, silicon carbide modules and the like.

[0040] It can be understood that the inductor modules and silicon carbide modules in the energy storage converter are installed on the liquid cooling plate body 1, so that the inductor modules and silicon carbide modules are liquid-cooled by the liquid cooling plate.

[0041] Preferably, the area outside the flow channel of the liquid cooling plate body 1 is provided with a plurality of weight reduction areas 22, which effectively reduce the overall weight of the liquid cooling plate. Here, the area outside the flow channel of the liquid cooling plate body 1 can be a safety area without a flow channel in the thickness direction of the liquid cooling plate body 1. The position, shape and size of the weight reduction area 22 can be set according to actual needs, for example, a plurality of rectangular weight reduction areas 22 are arranged at the edges of the liquid cooling plate body 1, a plurality of weight reduction areas 22 are arranged between the shunt flow channel 11 and the parallel flow channel 12, and the like.

[0042] The thickness of the weight reduction area 22 is less than the thickness of the liquid cooling plate body 1.

[0043] The liquid cooling plate body and the liquid cooling plate provided by the utility model can ensure the balanced flow of the cooling liquid flowing into the shunt flow channel by setting the shunt column and the turbulence column in the inlet flow channel, forming a plurality of uniform branch streams after the cooling liquid is shunted twice, effectively increasing the contact area of the cooling liquid and the flow channel by the curved flow channel in the shunt flow channel, reducing the flow resistance of the cooling liquid by the smooth flow channel and the parallel flow channel in the shunt flow channel, significantly improving the heat dissipation efficiency, and realizing the uniform and sufficient cooling effect.

[0044] The above-described embodiments only express several implementation manners of the utility model, and the description is more specific and detailed, but it cannot be understood as the limitation of the patent scope of the utility model. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the utility model, a plurality of modifications and improvements can be made, which belong to the protection scope of the utility model. Therefore, the protection scope of the utility model should be subject to the appended claims.

Claims

1. A liquid cold plate body, characterized by, The application relates to a liquid cooling plate body. The liquid cooling plate body comprises an inlet flow channel, a branch flow channel, a parallel flow channel and an outlet flow channel. One end of the inlet flow channel is a smooth flow channel, and the other end of the inlet flow channel is a gradually expanding flow channel; the branch flow channel is connected with one end of the gradually expanding flow channel and the parallel flow channel, and the other end of the parallel flow channel is connected with the outlet flow channel. The gradually expanding flow channel is provided with a branch column and a plurality of turbulence columns, and the plurality of turbulence columns are dispersedly arranged between the branch column and the branch flow channel. The branch flow channel comprises a first flow channel, a second flow channel, a third flow channel and a fourth flow channel. The first flow channel, the second flow channel, the third flow channel and the fourth flow channel are all alternating flow channels of curved flow channels and smooth flow channels, and the curved flow channels of the four flow channels are correspondingly arranged; adjacent curved flow channels in the second flow channel and adjacent curved flow channels in the corresponding third flow channel are converged to form a convergence area.

2. The liquid cold plate body of claim 1, wherein, The convergence area is a smooth flow channel, and the flow channel cross-sectional area of the convergence area is larger than that of the curved flow channel.

3. The liquid cold plate body of claim 2, wherein, The parallel flow channel comprises a plurality of parallel smooth flow channels.

4. The liquid cold plate body of claim 3, wherein, The curved flow channel is a wave-shaped flow channel or an S-shaped flow channel.

5. The liquid cold plate body of claim 4, wherein, The cross section of the branch column is a long strip, and the cross section of the turbulence column is a circle.

6. The liquid cold plate body of claim 5, wherein, The liquid cooling plate body is provided with a plurality of fixing holes.

7. The liquid cold plate body of claim 6, wherein, The area outside the flow channel of the liquid cooling plate body is provided with a weight-reducing area.

8. A liquid-cooled heat spreader, comprising: The application relates to a liquid cooling plate body. The liquid cooling plate body, the inlet part and the outlet part are as claimed in any one of claims 1 to 7. The inlet part and the outlet part are both fixed on the same side of the liquid cooling plate body. The inlet part is connected with one end of the inlet flow channel, and the outlet flow channel is connected with the outlet part.

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