Tree-shaped waterway structure and cooling device thereof
By adopting a tree waterway structure and its cooling device in the silicon carbide power device, and using the separation baffle, flow block and water separation structure design, the problem of insufficient heat dissipation under high power density is solved, and efficient and uniform water flow distribution and heat dissipation effect is achieved, which enhances the competitiveness of the product.
Patent Information
- Application Number
- CN202411558300.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-04
- Publication Date
- 2025-03-04
AI Technical Summary
In the process of increasing power density and shrinking volume of silicon carbide power devices, the heat dissipation problem has become a key point restricting their development. The existing waterway heat dissipation capacity is not enough to meet the needs of efficient heat dissipation.
The tree-shaped waterway structure and its cooling device are adopted to achieve uniform distribution of water flow and efficient heat dissipation through the design of partition baffles, flow guide blocks, primary and secondary water separation structures.
It improves the heat dissipation effect in a limited space, achieves uniform distribution of water flow, reduces manufacturing costs, improves product competitiveness, and is suitable for heat dissipation needs in different scenarios.
Smart Images
Figure CN119562491A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of power device heat dissipation, in particular to a tree-shaped water channel structure and a cooling device thereof. Background Art
[0002] Driven by the application of silicon carbide technology in electric vehicles, the market for silicon carbide power devices is growing rapidly. According to market demand, the power density of silicon carbide power devices is increasing, but at the same time, the size of power devices is decreasing. The resulting heat dissipation problem is a key point restricting the development of power devices.
[0003] Improving the heat dissipation capacity of water channels is the most effective technology to improve heat dissipation efficiency in the thermal management process, and has become the most important part of the power device design process.
[0004] According to professional simulation and calculation, increasing water channel diversion can effectively improve the heat dissipation capacity of the module.
[0005] To this end, we propose a tree-shaped water channel structure and a cooling device thereof. Summary of the invention
[0006] In view of the shortcomings of the above-mentioned existing production technology, the applicant provides a tree-shaped water channel structure and a cooling device thereof, which achieves uniform distribution of water flow and improves the heat dissipation effect in a limited space.
[0007] The technical solution adopted by the present invention is as follows:
[0008] A tree-shaped waterway structure comprises:
[0009] A partition baffle is used to divide the waterway space;
[0010] The water inlet and outlet are respectively arranged at the diagonal areas of the partition baffle to realize the liquid circulation in the partition baffle;
[0011] The guide block is located in the center of the dividing baffle, which divides the water flow in the main path into two streams to improve the uniformity of water flow distribution;
[0012] The first-level water-dividing structures are two in number and are crescent-shaped. The two first-level water-dividing structures are symmetrically arranged on both sides of the guide block and are concave toward the guide block.
[0013] The partition baffle is arranged in a rectangular shape, the guide block is an elliptical structure, and the major axis of the guide block is located on the connecting line of the two water inlets and outlets.
[0014] It also includes two secondary water-dividing structures symmetrical to the long axis of the guide block, the secondary water-dividing structure is an L-shaped structure, and the secondary water-dividing structure is located on the convex side of the primary water-dividing structure.
[0015] Both ends of the primary water diversion structure and the secondary water diversion structure are parallel to the long axis of the guide block.
[0016] The minimum distance a between the two secondary water-dividing structures is greater than the minimum distance b between the two primary water-dividing structures.
[0017] The ratio of the internal space area of the partition baffle to the area occupied by the primary water diversion structure satisfies: the widest part of the primary water diversion structure is consistent with the width of the guide block, which is 1-1.5mm; the spacing between the guide block and the primary water diversion structure is 1.5-2.2mm; the spacing between the partition baffle and the primary water diversion structure is 1.8-2.3mm.
[0018] A simple heat dissipation and cooling device comprises a plurality of the above-mentioned tree-shaped water channel structures, and further comprises:
[0019] The base plate serves as the basic support for the heat dissipation and cooling device;
[0020] A peripheral baffle is disposed on the bottom plate and encloses a liquid circulation space;
[0021] A plurality of the tree-shaped water channel structures are distributed in a matrix in the peripheral baffle;
[0022] Two adjacent tree-shaped water channel structures share a peripheral baffle plate on the same side, and a common water inlet and outlet are arranged on the peripheral baffle plate on the same side.
[0023] A universal heat dissipation and cooling device, comprising a plurality of the above-mentioned tree-shaped water channel structures, further comprising:
[0024] The base plate serves as the basic support for the heat dissipation and cooling device;
[0025] A peripheral baffle is disposed on the bottom plate and encloses a liquid circulation space;
[0026] A plurality of the tree-shaped water channel structures are distributed in a matrix in the peripheral baffle;
[0027] Two adjacent tree-shaped water channel structures share a peripheral baffle plate on the same side, and a common water inlet and outlet are arranged on the peripheral baffle plate on the same side.
[0028] A high-efficiency heat dissipation cooling device, comprising a plurality of the above-mentioned tree-shaped water channel structures, and further comprising:
[0029] The base plate serves as the basic support for the heat dissipation and cooling device;
[0030] A peripheral baffle is disposed on the bottom plate and encloses a liquid circulation space;
[0031] The plurality of tree-shaped water channel structures are distributed in a matrix in the peripheral baffle, and four tree-shaped water channel structures form a group, and the water inlets and outlets of each group of four universal tree-shaped water channel structures are interconnected.
[0032] The beneficial effects of the present invention are as follows:
[0033] The present invention has a compact and reasonable structure and is easy to operate. The tree-shaped water channel structure and heat dissipation cooling device of the present invention achieve uniform distribution of water flow and efficient heat dissipation through clever design and optimization. Various types of heat dissipation cooling devices meet the heat dissipation requirements in different scenarios, improve space utilization and product competitiveness. At the same time, the present invention has a reasonable structural design, low manufacturing cost, and is easy to promote and apply, providing an effective solution to the heat dissipation problem of electronic equipment.
[0034] At the same time, the present invention also has the following advantages:
[0035] The tree-shaped water channel structure of the present invention achieves uniform distribution of water flow and improves the heat dissipation effect in a limited space by cleverly designing the partition baffles, guide blocks, and primary and secondary water-dividing structures. In the tree-shaped water channel structure, the arrangement of the guide blocks and the primary water-dividing structure effectively divides the water flow on the main path into multiple streams, allowing the water flow to flow along the side walls of the partition baffles, thereby increasing the area covered by the water flow and improving the uniformity of the distribution of the water flow in the partition baffles. In the universal tree-shaped water channel structure, a secondary water-dividing structure is further provided, which can guide the water flow on the diagonal path to the inner wall of the partition baffle to a greater extent, further improving the water-dividing effect, making the water flow more uniform, and the heat dissipation effect is also improved. This design is of great significance for electronic devices that require efficient heat dissipation, such as chips.
[0036] The present invention provides a variety of heat dissipation and cooling devices, such as simple, general and high-efficiency types, to meet the heat dissipation needs in different scenarios. The simple heat dissipation and cooling device is suitable for heat dissipation scenarios with smaller or more compact areas. Through the simple tree-shaped water channel structure distributed in a matrix, the maximum heat dissipation effect in a limited space is achieved. The general heat dissipation and cooling device is suitable for partition baffles with larger internal areas. By adding a secondary water distribution structure, a more uniform water flow distribution and better heat dissipation effect are achieved. The high-efficiency heat dissipation and cooling device arranges four general tree-shaped water channel structures into a group, and the water inlets and outlets are interconnected, further improving the heat dissipation efficiency. This diversified design enables the present invention to flexibly respond to various heat dissipation needs.
[0037] The heat dissipation and cooling device of the present invention is optimized in structural design, and the space utilization rate is improved through the tree-shaped water channel structure distributed in a matrix. In the simple heat dissipation and cooling device, multiple simple tree-shaped water channel structures are interconnected and share the peripheral baffles on the same side, which reduces the use of materials and reduces costs. In the general and high-efficiency heat dissipation and cooling devices, by reasonably setting the primary and secondary water distribution structures, as well as the layout of the water inlet and outlet, the smooth flow of water and efficient heat dissipation are achieved, while maintaining the compactness and beauty of the structure. This optimized structural design not only improves the heat dissipation effect, but also reduces the manufacturing cost and improves the competitiveness of the product. BRIEF DESCRIPTION OF THE DRAWINGS
[0038] Figure 1 It is a structural schematic diagram of the simplified tree-shaped water channel structure in the present invention.
[0039] Figure 2 It is a structural schematic diagram of the universal tree-shaped water channel structure in the present invention.
[0040] Figure 3 It is a structural schematic diagram of a simplified heat dissipation and cooling device in Embodiment 2 of the present invention.
[0041] Figure 4 It is a schematic structural diagram of a universal heat dissipation and cooling device in Embodiment 3 of the present invention.
[0042] Figure 5 It is a schematic diagram of the structure of a high-efficiency heat dissipation and cooling device in Embodiment 4 of the present invention.
[0043] in:
[0044] 100, tree-shaped waterway structure; 200, peripheral baffles; 300, bottom plate;
[0045] 101. partition baffle; 102. water inlet and outlet; 103. guide block; 104. primary water distribution structure; 105. secondary water distribution structure; DETAILED DESCRIPTION
[0046] The specific implementation of the present invention will be described below in conjunction with the accompanying drawings.
[0047] Embodiment 1
[0048] like Figure 1 and Figure 2 As shown, in the present embodiment, a tree-shaped water channel structure is disclosed, which can realize the diversion of the water channel, allowing the water flow to pass slowly, evenly and orderly, so that the flow area of the water channel is increased and covers a larger area, and the flow of water can take away the heat of the heat source through heat exchange, thereby improving the heat dissipation effect. The tree-shaped water channel structure includes a partition baffle 101, a water inlet and outlet 102, a guide block 103 and a primary water diversion structure 104. At the same time, a secondary water diversion structure 105 is selectively set according to the overall layout design. The setting of the secondary water diversion structure 105 can improve the diversion path, thereby further improving the uniformity of the water flow in the area.
[0049] Specific as Figure 1As shown, it is a simplified tree-shaped water channel structure, which is mainly aimed at heat dissipation and cooling devices with smaller areas or more compact types. Since there is no secondary water-dividing structure 105, the space inside each water-dividing baffle 101 is smaller, and the heat dissipation and cooling device is composed of a plurality of water-dividing baffles 101, thereby reducing the area of the heat dissipation and cooling device, or in the case of the same area, more water-dividing baffles 101 can be distributed by using the simplified tree-shaped water channel structure, thereby improving the heat dissipation effect, and it is mainly aimed at heat dissipation and cooling devices with smaller areas;
[0050] like Figure 1 As shown, the simplified tree-shaped water channel structure includes a partition baffle 101 arranged in a rectangular shape, and water inlets and outlets 102 are respectively arranged in the diagonal areas of the partition baffle 101 to realize the circulation of liquid. At this time, the liquid will enter the partition baffle 101 through one of the water inlets and outlets 102, and then flow out through the other water inlet and outlet 102. At this time, the path of the water channel mainly flows along the diagonal direction, and the water flow in other areas of the partition baffle 101 is small, thereby reducing the heat dissipation effect of other areas.
[0051] Therefore, in order to increase the distribution area of the water flow in the partition baffle 101, a guide block 103 is provided at the center of the partition baffle 101 in this embodiment. The guide block 103 is elliptical, and the major axis of the guide block 103 is located on the line connecting the two water inlets and outlets 102, so that the water flow on the main path can be divided into two water flows.
[0052] At the same time, two symmetrical primary water-dividing structures 104 are arranged in the partition baffle 101 along the long axis of the guide block 103 as the symmetry axis. The primary water-dividing structure 104 is crescent-shaped and concave toward the guide block 103. At this time, the primary water-dividing structure 104 cooperates with the guide block 103 to divide the water flow into 4 streams. Due to the special structural design of the primary water-dividing structure 104, the water flow adheres to the side wall of the partition baffle 101 to flow, so that the water flow covers a larger area of the internal space of the partition baffle 101, thereby improving the uniformity of the distribution of the water flow in the partition baffle 101.
[0053] like Figure 1 As shown, both ends of the primary water diversion structure 104 in this embodiment are parallel to the long axis of the guide block 103 , so as to facilitate water flow to pass through and flow toward the guide block 103 .
[0054] like Figure 2As shown, it is a universal tree-shaped waterway structure. In this tree-shaped waterway structure, the internal area of the partition baffle 101 is relatively large. If a simple tree-shaped waterway structure is used, the internal space of the partition baffle 101 cannot be evenly covered. In addition, it should be pointed out that although the uniformity of the water flow in the internal space of the partition baffle 101 can be improved by increasing the structural volume of the primary water-dividing structure 104, it is generally not designed in this way, because the area occupied by the primary water-dividing structure 104 will be adjusted within a certain range according to the internal space of the partition baffle 101. The widest part of the primary water-dividing structure 104 is basically the same as the width of the guide block 103, generally about 1-1.5mm; the distance between the guide block 103 and the primary water-dividing structure 104 is about 1.5-2.2mm; the distance between the partition baffle 101 and the primary water-dividing structure 104 is about 1.8-2.3mm; the specific adjustment can be made according to the processing capacity. When the volume of the primary water-dividing structure 104 is too large relative to the internal space of the partition baffle 101, it means that the connection surface between the primary water-dividing structure 104 and the partition baffle 101 is larger, which leads to a relatively small area of water flow, which will also affect the heat dissipation effect inside the partition baffle 101. On the contrary, when the volume of the primary water-dividing structure 104 is too small relative to the internal space of the partition baffle 101, more water will quickly leave from the larger gap, which will also affect the water-dividing effect. Based on this, the water-dividing structure 105 will be used to adjust the water-dividing effect.
[0055] Therefore, in the universal tree-shaped water channel structure, two secondary water-dividing structures 105 are symmetrically arranged with the long axis of the guide block 103 as the symmetry axis in the simple tree-shaped water channel structure. The secondary water-dividing structure 105 is an L-shaped structure, and the secondary water-dividing structure 105 is located on the convex side of the primary water-dividing structure 104, which can guide the water flow on the diagonal path to the inner wall of the partition baffle 101 to a greater extent, further improve the water-dividing effect, improve the uniformity of the water flow, and achieve a better heat dissipation effect. At the same time, the two ends of the secondary water-dividing structure 105 are parallel to the long axis of the guide block 103, so that the water flow passes through and flows in the direction of the guide block 103 and the primary water-dividing structure 104.
[0056] In this embodiment, the minimum spacing a between the two secondary water diversion structures 105 is greater than the minimum spacing b between the two primary water diversion structures 104, so that water can flow between the two primary water diversion structures 104 and between the primary water diversion structure 104 and the secondary water diversion structure 105, thereby improving the water diversion effect.
[0057] The object of the present invention is to provide a tree-shaped water channel structure having the characteristics of multiple water channels, which can further reduce the heating temperature of the chip.
[0058] In this embodiment, the two primary water-dividing structures 104 are centrally symmetrical, and the central symmetrical point is the midpoint of the internal space of the partition baffle 101 ; the two secondary water-dividing structures 105 are centrally symmetrical, and the central symmetrical point is the midpoint of the internal space of the partition baffle 101 .
[0059] Embodiment 2
[0060] like Figure 3 As shown, the present embodiment discloses a simple heat dissipation and cooling device, which includes a base plate 300, on which peripheral baffles 200 distributed in a rectangular shape are arranged, and a plurality of simple tree-shaped water channel structures distributed in a matrix are arranged inside the peripheral baffles 200, and the plurality of simple water channel structures located in a horizontal row in the simple heat dissipation and cooling device are interconnected, specifically, two adjacent simple tree-shaped water channel structures share the peripheral baffle 2 on the same side, and a common water inlet and outlet 102 is arranged on the peripheral baffle 2 on the same side.
[0061] In this embodiment, the bottom plate 300 is made of metal, including pure metal or alloy structure. In this embodiment, copper is used. The bottom plate 300 directly contacts the heat source to improve the heat conduction and heat dissipation effect.
[0062] Both sides of the multiple rows of simple tree-shaped water channels are provided with mutually intercommunication chambers for realizing mutual circulation of the multiple rows of simple tree-shaped water channels.
[0063] By adopting this simple heat dissipation cooling device, it can be applied to a more compact space, and the water flow dispersion effect can be maximized within a limited space, thereby improving the heat dissipation effect.
[0064] Embodiment 3
[0065] like Figure 4 As shown, a universal heat dissipation cooling device is disclosed in this embodiment. The difference between this universal heat dissipation cooling device and embodiment 2 is that the simple tree-shaped water channel structure in embodiment 2 is replaced by a universal tree-shaped water channel structure. By adopting this universal heat dissipation cooling device, the water flow dispersion effect is further improved, and the water residence time in the flow channel is increased, which is beneficial to the heat exchange effect.
[0066] Embodiment 4
[0067] like Figure 5As shown, the present embodiment discloses a high-efficiency heat dissipation and cooling device, the structure of which includes a base plate 300, on which peripheral baffles 200 distributed in a rectangular shape are arranged, and a plurality of universal tree-shaped water channel structures distributed in a matrix are arranged in the peripheral baffles 200. In the present embodiment, four universal tree-shaped water channels (or simple heat dissipation and cooling device structures) are arranged as a group. The heat dissipation and cooling device in the present embodiment includes at least one group of four universal tree-shaped water channel structures, and the water inlets and outlets 102 of the four universal tree-shaped water channel structures (or simple heat dissipation and cooling device structures) in the same group are interconnected. By adopting this universal heat dissipation and cooling device, the water flow dispersion effect is guaranteed.
[0068] The above description is an explanation of the present invention, not a limitation of the present invention. The scope of the present invention is defined in the claims. Any form of modification may be made within the scope of protection of the present invention.
Claims
1. Tree-shaped waterway structure, characterized in that: include: A partition baffle is used to divide the waterway space; The water inlet and outlet are respectively arranged in the diagonal area of the partition baffle to realize the liquid circulation in the partition baffle; the guide block is located at the center of the partition baffle to divide the water flow in the mainstream path into two streams to improve the uniformity of water flow distribution; The first-level water-dividing structures are two in number and are crescent-shaped. The two first-level water-dividing structures are symmetrically arranged on both sides of the guide block and are concave toward the guide block.
2. The tree-shaped waterway structure according to claim 1, characterized in that: The partition baffle is arranged in a rectangular shape, the guide block is an elliptical structure, and the major axis of the guide block is located on the connecting line of the two water inlets and outlets.
3. The tree-shaped waterway structure according to claim 2, characterized in that: It also includes two secondary water-dividing structures symmetrical to the long axis of the guide block, the secondary water-dividing structure is an L-shaped structure, and the secondary water-dividing structure is located on the convex side of the primary water-dividing structure.
4. The tree-shaped water channel structure according to claim 3, characterized in that: Both ends of the primary water diversion structure and the secondary water diversion structure are parallel to the long axis of the guide block.
5. The tree-shaped water channel structure according to claim 3, characterized in that: The minimum distance a between the two secondary water-dividing structures is greater than the minimum distance b between the two primary water-dividing structures.
6. The tree-shaped water channel structure according to claim 1, characterized in that: The ratio of the internal space area of the partition baffle to the area occupied by the primary water diversion structure satisfies that: the widest part of the primary water diversion structure is consistent with the width of the guide block, which is 1-1.5mm; the distance between the guide block and the primary water diversion structure is 1.5-2.2mm; The distance between the dividing baffle and the primary water dividing structure is 1.8-2.3 mm.
7. A simple heat dissipation cooling device, characterized in that: The water channel structure comprises a plurality of tree-shaped water channel structures according to any one of claims 1 or 2, and further comprises: The base plate serves as the basic support for the heat dissipation and cooling device; A peripheral baffle is disposed on the bottom plate and encloses a liquid circulation space; A plurality of the tree-shaped water channel structures are distributed in a matrix in the peripheral baffle; Two adjacent tree-shaped water channel structures share a peripheral baffle plate on the same side, and a common water inlet and outlet are arranged on the peripheral baffle plate on the same side.
8. A universal heat dissipation cooling device, characterized in that: The water channel structure comprises a plurality of tree-shaped water channel structures according to any one of claims 3 to 5, and further comprises: The base plate serves as the basic support for the heat dissipation and cooling device; A peripheral baffle is disposed on the bottom plate and encloses a liquid circulation space; A plurality of the tree-shaped water channel structures are distributed in a matrix in the peripheral baffle; Two adjacent tree-shaped water channel structures share a peripheral baffle plate on the same side, and a common water inlet and outlet are arranged on the peripheral baffle plate on the same side.
9. A high-efficiency heat dissipation cooling device, characterized in that: The water channel structure comprises a plurality of tree-shaped water channel structures according to any one of claims 1 to 5, and further comprises: The base plate serves as the basic support for the heat dissipation and cooling device; A peripheral baffle is disposed on the bottom plate and encloses a liquid circulation space; The plurality of tree-shaped water channel structures are distributed in a matrix in the peripheral baffle, and four tree-shaped water channel structures form a group, and the water inlets and outlets of each group of four universal tree-shaped water channel structures are interconnected.