Heat dissipation apparatus and communication system
By using an ion wind module to cool the remote radio unit (RRU), the limitations of natural convection and fan cooling are overcome, resulting in more efficient and stable heat dissipation, reduced noise, and fewer maintenance requirements.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- HUAWEI TECH CO LTD
- Filing Date
- 2025-07-03
- Publication Date
- 2026-05-15
AI Technical Summary
In the existing technology, the natural convection cooling effect of the remote radio unit (RRU) is limited, and the fan cooling reliability is poor, resulting in unstable heat dissipation and affecting the performance and reliability of heat-generating components.
Cooling is achieved using an ion wind module, which includes a discharge structure and an AC power supply. The electric field between the first and second electrodes generates ion wind, which is guided by fins to improve heat dissipation efficiency, reduce noise, and enhance stability.
It improves the heat dissipation efficiency of heat-generating components such as RRUs, reduces temperature risks, enhances operational stability, reduces noise, and decreases maintenance frequency and costs.
Smart Images
Figure CN2025106841_15052026_PF_FP_ABST
Abstract
Description
A heat dissipation device and a communication system
[0001] This application claims priority to Chinese Patent Application No. 202411566957.2, filed with the State Intellectual Property Office of China on November 5, 2024, entitled “A Heat Dissipation Device and Communication System”, the entire contents of which are incorporated herein by reference. Technical Field
[0002] This application relates to the field of heat dissipation technology, and in particular to a heat dissipation device and a communication system. Background Technology
[0003] Communication systems include heat-generating components such as Massive MIMO Antennas (MMAs) and Remote Radio Units (RRUs). Taking the RRU as an example, as part of a distributed base station system, the RRU plays a crucial role in enhancing mobile communication network capacity and improving service quality. For instance, the RRU is responsible for converting between baseband and radio frequency signals, a conversion essential for efficient data transmission over the air interface. The RRU contains power amplifiers to increase the strength of the transmitted signal, ensuring sufficient coverage. RRU designs support operation on multiple carrier frequencies, allowing a single physical device to serve different frequency bands or technical standards; for example, it can simultaneously support 2G, 3G, and 4G services.
[0004] The RRU generates a lot of heat during operation. Because the RRU is small and lightweight, it can be installed outdoors, such as on rooftops, walls, and light poles. This allows for rapid expansion of network coverage while utilizing the external environment for natural convection cooling.
[0005] As wireless communication capacity increases, the heat dissipation requirements of RRUs also increase. However, the cooling effect of natural convection cooling of RRUs by the external environment is limited. The cooling effect of natural convection cooling is proportional to the area of the heat dissipation surface of the RRU, which makes the miniaturization design of RRUs and heat dissipation efficiency mutually restrictive.
[0006] To overcome the limitations of natural convection cooling, a fan can be installed at the RRU to increase convection. However, fan cooling is less reliable, and problems such as reduced fan speed or fan failure may occur.
[0007] Therefore, how to stably and reliably dissipate heat from heat-generating components such as MMA and RRU is a technical problem that urgently needs to be solved in this field.
[0008] Application content
[0009] In view of this, this application provides a heat dissipation device and a communication system that can reliably dissipate heat from heat-generating components.
[0010] The first aspect of this application provides a heat dissipation device, including a substrate, fins, and an ion wind module, both of which are mounted on the substrate. The ion wind module includes at least a discharge structure and an AC power supply. The discharge structure includes at least a first electrode, a second electrode, and a dielectric layer. At least a portion of the first electrode is exposed to the external environment, and at least a portion of the second electrode is embedded in the dielectric layer to form an electrode module. An air gap exists between the first electrode and the dielectric layer along a fifth direction. In a sixth direction, the geometric center of the first electrode and the geometric center of the second electrode have a predetermined distance greater than zero. In the fifth direction, the projected area of the first electrode is greater than or less than the projected area of the second electrode. One of the first electrode and the second electrode is electrically connected to the positive terminal of the AC power supply, and the other is electrically connected to the negative terminal of the AC power supply. An ion wind can be generated between the first electrode and the second electrode, and the ion wind is used to dissipate heat from the fins.
[0011] In this application, ion wind is used to cool the heating element. Compared with natural convection cooling, this improves the heat dissipation efficiency of the heat dissipation device and reduces the risk of performance degradation or even damage to the heating element due to high temperature. This is beneficial to improving the working stability and performance of the heating element. Compared with fan cooling, ion wind cooling reduces the noise of the heat dissipation device during operation, improves the working stability of the heat dissipation device, and helps to reduce the number of maintenance times and shorten the maintenance cycle of the heat dissipation device, thereby helping to reduce the maintenance cost of the heat dissipation device.
[0012] The first and second electrodes are connected to the positive and negative terminals of the AC power supply, respectively. The electric field between the first and second electrodes will change continuously, which will cause the ions to move continuously, reduce the risk of failure of the ion wind module, and thus improve the working stability of the heat dissipation device.
[0013] In one possible design, the fins extend along a first direction, and there are multiple fins. The multiple fins are spaced apart along a second direction, and the first direction is perpendicular to the second direction. A sixth direction is parallel to the first direction, so that the direction of motion of the ion wind is parallel to the first direction.
[0014] In this application, the fins can guide the ion wind, thereby directing the ion wind to a farther position to improve the ion wind. At the same time, the fins reduce the blocking effect on the ion wind, thereby improving the heat dissipation effect of the heat dissipation device on the heat-generating element.
[0015] In one possible design, in a plane perpendicular to the first and sixth directions, the fifth direction is parallel to the second direction; or, in a plane perpendicular to the first and sixth directions, the fifth direction is perpendicular to the second direction.
[0016] In this application, the fifth direction is parallel or perpendicular to the second direction, which improves the flexibility of the setting angle of the ion wind module, thereby helping to reduce the installation difficulty of the ion wind module.
[0017] In one possible design, the number of first electrodes and electrode modules in a discharge structure is one; or, in a discharge structure, the number of first electrodes is one and the number of electrode modules is two, with the first electrode located between the two electrode modules along the fifth direction; or, in a discharge structure, the number of first electrodes is two and the number of electrode modules is one, with the electrode module located between the two first electrodes along the fifth direction.
[0018] In this application, there is only one first electrode and one electrode module, which makes the discharge structure smaller in size, thereby increasing the number of discharge structures that can be set in a limited space and improving the cooling effect.
[0019] The first electrode is located between the two electrode modules, so that two adjacent electrode modules share one first electrode. This arrangement can reduce the number of first electrodes, thereby helping to reduce the material cost of the ion wind module and simplify the discharge structure and the electrical connection structure of the AC power supply.
[0020] The electrode module is located between the two first electrodes, so that two adjacent first electrodes share one electrode module. This arrangement can reduce the number of electrode modules, thereby helping to reduce the material cost of the ion wind module and simplify the discharge structure and the electrical connection structure of the AC power supply.
[0021] In one possible design, there are multiple discharge structures, which are arranged at intervals along the fifth and / or sixth directions.
[0022] In this application, the discharge structures are arranged at intervals along the fifth and / or sixth directions, increasing the number of discharge structures and thus increasing the airflow of the ion wind generated by the ion wind module, thereby improving the heat dissipation efficiency of the heat dissipation device.
[0023] In one possible design, there is one AC power source, and adjacent discharge structures are connected in parallel.
[0024] In this application, only one AC power source is used, reducing the number of AC power sources and thus simplifying the complexity of electrical connections. This also helps to reduce the overall size of the ion wind module. Adjacent discharge structures are connected in parallel, reducing the impact of damaged discharge structures on the overall circuit, thereby improving the operational stability of the heat dissipation device.
[0025] In one possible design, within the plane containing the sixth direction, the extension direction of the electrode module is parallel to the sixth direction, or there is a preset angle greater than zero between the extension direction of the electrode module and the sixth direction.
[0026] In this application, no special limitation is made on the extension direction of the electrode module, so as to improve the flexibility of the electrode module setting.
[0027] In one possible design, when multiple discharge structures are arranged at intervals along the sixth direction, the AC power supply includes a first lead and a second lead, one of which is connected to the positive terminal of the AC power supply, and the other is connected to the negative terminal of the AC power supply; the discharge structure includes at least a first structure and a second structure, and along the sixth direction, the first lead is located between the first structure and the second structure, the first electrode of the first structure and the second electrode of the second structure are respectively electrically connected to the first lead, and the second electrode of the first structure and the first electrode of the second structure are respectively electrically connected to the second lead.
[0028] In this application, the first lead is located between the first structure and the second structure. The first electrode in the first structure and the second electrode in the second structure are both electrically connected to the first lead, which simplifies the electrical connection structure of the first structure and the second structure and helps to shorten the wiring cycle of the first structure and the second structure.
[0029] In one possible design, in the plane containing the sixth direction, the extension direction of the dielectric layer is parallel to the extension direction of the second electrode, or there is a preset angle greater than zero between the extension direction of the dielectric layer and the extension direction of the second electrode.
[0030] In this application, the extension direction of the dielectric layer and the second electrode is not specifically limited, which can improve the flexibility of the arrangement of the dielectric layer and the second electrode.
[0031] In one possible design, the thickness of the dielectric layer in the fifth direction is 0.01 mm to 5 mm.
[0032] In this application, the thickness of the dielectric layer is 0.01mm to 5mm, which can improve the insulation effect of the dielectric layer and reduce the overall size of the ion wind module.
[0033] In one possible design, along the fifth direction, the projection of the first electrode and the projection of the electrode module overlap; or, along the fifth direction, the projection of the first electrode and the projection of the electrode module are at a predetermined distance.
[0034] In this application, no special restrictions are placed on the distance between the dielectric layer and the first electrode, or on the size of the dielectric layer in the sixth direction, so as to increase the flexibility of the relative position of the dielectric layer and the first electrode.
[0035] In one possible design, the cross-sectional profile of the first electrode is circular, triangular, quadrilateral, or serrated.
[0036] In this application, the cross-sectional profile of the first electrode is circular, triangular, quadrilateral, or serrated, which improves the structural flexibility of the first electrode.
[0037] In one possible design, the cross-sectional profile of the second electrode is circular, triangular, quadrilateral, or serrated.
[0038] In this application, the projected shape of the second electrode is circular, triangular, quadrilateral, or serrated, which improves the structural flexibility of the second electrode.
[0039] In one possible design, either the first electrode or the second electrode is grounded.
[0040] In this application, grounding one of the first electrode and the second electrode can improve the safety of the circuit, reduce safety problems caused by leakage, and thus improve the safety of the heat dissipation device.
[0041] In one possible design, the fins are located on one side of the ion wind module along the first direction; or, the fins are located on both sides of the ion wind module along the first direction.
[0042] In this application, the fins can be located on one or both sides of the ion wind module. The embodiments of this application do not impose special limitations on the relative positions of the fins and the ion wind module, so as to improve the flexibility of the setting position of the fins and the ion wind module.
[0043] A second aspect of this application provides a communication system, which includes a heating element and a heat dissipation device as described in any of the above claims, wherein a substrate is attached to the heating element and the substrate is used to transfer the heat of the heating element to the fins.
[0044] In this application, ion wind is used to cool the heating element. Compared with natural convection cooling, this improves the heat dissipation efficiency of the heat dissipation device and reduces the risk of performance degradation or even damage to the heating element due to high temperature. This is beneficial to improving the working stability and performance of the heating element. Compared with fan cooling, ion wind cooling reduces the noise of the heat dissipation device during operation, improves the working stability of the heat dissipation device, and helps to reduce the number of maintenance times and shorten the maintenance cycle of the heat dissipation device, thereby helping to reduce the maintenance cost of the heat dissipation device. Attached Figure Description
[0045] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0046] Figure 1 is a schematic diagram of the heat dissipation device provided in this application in one embodiment;
[0047] Figure 2 is a schematic diagram of the heat dissipation device provided in this application in another embodiment;
[0048] Figure 3 is a partial structural schematic diagram of the ion wind module provided in this application;
[0049] Figure 4 is a partial cross-sectional view of the discharge structure in Figure 3 in one embodiment;
[0050] Figure 5 is a schematic diagram of the distribution of fins and discharge structure in one embodiment;
[0051] Figure 6 is a bottom view of Figure 5;
[0052] Figure 7 is a schematic diagram of the distribution of fins and discharge structure in one embodiment;
[0053] Figure 8 is a bottom view of Figure 7;
[0054] Figure 9 is a right view of the discharge structure in Figure 4;
[0055] Figure 10 is a schematic diagram of the discharge structure in Figure 3 in another embodiment;
[0056] Figure 11 is a right view of the discharge structure in Figure 10;
[0057] Figure 12 is a schematic diagram of the discharge structure in Figure 3 in another embodiment;
[0058] Figure 13 is a schematic diagram of the discharge structure in Figure 3 in another embodiment;
[0059] Figure 14 is a schematic diagram of the discharge structure in Figure 3 in another embodiment;
[0060] Figure 15 is a schematic diagram of the discharge structure in Figure 3 in another embodiment;
[0061] Figure 16 is a schematic diagram of the discharge structure in Figure 3 in another embodiment;
[0062] Figure 17 is a schematic diagram of the discharge structure in Figure 3 in another embodiment;
[0063] Figure 18 shows the electrical connection structure of the discharge structure in Figure 14 in one embodiment;
[0064] Figure 19 shows the electrical connection structure of the discharge structure in Figure 14 in another embodiment;
[0065] Figure 20 shows the electrical connection structure of the discharge structure in Figure 14 in another embodiment;
[0066] Figure 21 shows the electrical connection structure of the discharge structure in Figure 15 in one embodiment;
[0067] Figure 22 shows the electrical connection structure of the discharge structure in Figure 15 in another embodiment;
[0068] Figure 23 shows the electrical connection structure of the discharge structure in Figure 15 in another embodiment;
[0069] Figure 24 shows the electrical connection structure of the discharge structure in Figure 16 in one embodiment;
[0070] Figure 25 shows the electrical connection structure of the discharge structure in Figure 16 in another embodiment;
[0071] Figure 26 shows the electrical connection structure of the discharge structure in Figure 16 in another embodiment;
[0072] Figure 27 shows the electrical connection structure of the discharge structure in Figure 17 in one embodiment;
[0073] Figure 28 shows the electrical connection structure of the discharge structure in Figure 17 in another embodiment;
[0074] Figure 29 shows the electrical connection structure of the discharge structure in Figure 17 in another embodiment.
[0075] Reference numerals: 1-Substrate; 2-Fin; 3-Ion wind module; 31-Discharge structure; 311-First electrode; 311A-First geometric center; 312-Electrode module; 312A-Second electrode; 312Aa-Second geometric center; 312B-Dielectric layer; 313-First structure; 314-Second structure; 32-AC power supply; 321-First lead; 322-Second lead. Detailed Implementation
[0076] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.
[0077] It should be understood that the described embodiments are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.
[0078] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.
[0079] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.
[0080] This application provides a communication system that includes heat-generating components such as a Massive MIMO Antenna (MMA) and a Remote Radio Unit (RRU). Taking the RRU as an example, as part of a distributed base station system, the RRU plays a crucial role in enhancing mobile communication network capacity and improving service quality. For instance, the RRU is responsible for converting between baseband and radio frequency signals, which is essential for the effective transmission of data over the air interface. The RRU includes a power amplifier to increase the strength of the transmitted signal, ensuring sufficient coverage. The RRU is designed to support operation on multiple carrier frequencies, allowing a single physical device to serve different frequency bands or technical standards, such as simultaneously supporting 2G, 3G, and 4G services.
[0081] The RRU generates a lot of heat during operation. Because the RRU is small and lightweight, it can be installed outdoors, such as on rooftops, walls, and light poles. This allows for rapid expansion of network coverage while utilizing the external environment for natural convection cooling.
[0082] As wireless communication capacity increases, the heat dissipation requirements of RRUs also increase. However, the cooling effect of natural convection cooling of RRUs by the external environment is limited. The cooling effect of natural convection cooling is proportional to the area of the heat dissipation surface of the RRU, which makes the miniaturization design of RRUs and heat dissipation efficiency mutually restrictive.
[0083] To overcome the limitations of natural convection cooling, a fan can be installed at the RRU to increase convection. However, fan cooling is less reliable, with issues such as high noise levels, reduced fan speed, and fan failure. In addition, regular fan maintenance is required, increasing the maintenance cost of the heat dissipation device.
[0084] To address the technical problems of poor cooling effect and poor cooling stability caused by natural convection cooling and fan cooling, a second aspect of this application provides a heat dissipation device that is attached to heat-generating elements such as MMA and RRU. Figure 1 is a schematic diagram of the heat dissipation device. As shown in Figure 1, the heat dissipation device includes a substrate 1 for attaching to heat-generating elements such as MMA and RRU, fins 2 mounted on the substrate 1, and an ion wind module 3 mounted on the substrate 1. As shown in Figure 1, the fins 2 extend along a first direction X, and multiple fins 2 are arranged at intervals along a second direction Y. In Figure 1, taking the first direction X and the second direction Y as perpendicular as an example, the width direction of the fins 2 is denoted as the third direction Z, which is perpendicular to the first direction X and the second direction Y. The heat from the heat-generating element is transferred to the fins 2 through the substrate 1. The ion wind module 3 can generate ion wind, which can dissipate heat from the fins 2, thereby achieving cooling of the heat-generating element.
[0085] In this embodiment, ion wind is used to cool the heating element. Compared with natural convection cooling, this improves the heat dissipation efficiency of the heat dissipation device and reduces the risk of performance degradation or even damage to the heating element due to high temperature. This helps to improve the working stability and performance of the heating element. Compared with fan cooling, ion wind cooling reduces the noise of the heat dissipation device during operation, improves the working stability of the heat dissipation device, and helps to reduce the number of maintenance times and shorten the maintenance cycle of the heat dissipation device, thereby helping to reduce the maintenance cost of the heat dissipation device.
[0086] In one embodiment, as shown in FIG1, the fins 2 are located on one side of the ion wind module 3 in the third direction Z. FIG2 is a schematic diagram of the structure of the heat dissipation device in another embodiment. As shown in FIG2, the fins 2 can also be located on both sides of the ion wind module 3 in the third direction Z.
[0087] In this embodiment, the fins 2 can be located on one or both sides of the ion wind module 3. This application embodiment does not impose special limitations on the relative positions of the fins 2 and the ion wind module 3, so as to improve the flexibility of the setting positions of the fins 2 and the ion wind module 3.
[0088] Figure 3 is a partial structural schematic diagram of the ion wind module. As shown in Figure 3, the ion wind module includes a discharge structure 31 for connection to a power source. The discharge structure 31 includes a first electrode 311 and an electrode module 312. The first electrode 311 extends along the fourth direction M, and the first electrode 311 and the electrode module 312 are arranged at intervals along the fifth direction N. The electrode module 312 includes a second electrode 312A and a dielectric layer 312B. The dashed structure in Figure 3 represents the second electrode 312A. As shown in Figure 3, at least a portion of the first electrode 311 is exposed to the external environment, and at least a portion of the second electrode 312A is embedded inside the dielectric layer 312B. Figure 4 is a partial structural cross-sectional view of the discharge structure in one embodiment. As shown in Figure 4, in the sixth direction P, there is a preset distance greater than zero between the first geometric center 311A of the first electrode 311 and the second geometric center 312Aa of the second electrode 312A. Referring again to Figure 3, in the fifth direction N, the projected area of the first electrode 311 is greater than or less than the projected area of the second electrode 312A. In this embodiment, the projected area of the first electrode 311 is less than the projected area of the second electrode 312A as an example.
[0089] When one of the first electrode 311 and the second electrode 312A is electrically connected to the positive terminal of the power supply and the other is electrically connected to the negative terminal, an electric field is generated in the air gap between the first electrode 311 and the second electrode 312A. Air molecules are ionized under the influence of this electric field, producing a large number of electrons and ions. These ions move under the influence of the electric field, generating an ion wind. The direction of the ion wind is from the electrode with the smaller projected area to the electrode with the larger projected area. In diagram 3, the direction of the ion wind is the direction indicated by the arrow in the sixth direction P.
[0090] Referring again to Figure 1, after the above-mentioned ion wind module is installed on the base, the extension direction of the fins 2 is parallel to the wind direction of the ion wind, that is, the first direction X in Figure 1 is parallel to the sixth direction P in Figure 2. At this time, the fins 2 can guide the ion wind, thereby guiding the ion wind to a farther position to improve the ion wind. At the same time, the shading effect of the fins 2 on the ion wind is reduced, thereby improving the heat dissipation effect of the heat dissipation device on the heat-generating element.
[0091] The power supply used to connect to the first electrode 311 and the second electrode 312A can be an AC power supply.
[0092] When the power supply is DC, ions will move towards the dielectric layer and accumulate on the surface of the dielectric layer. As ions accumulate on the surface of the dielectric layer, the potential difference between the dielectric layer and the first electrode gradually decreases. When the potential difference decreases to 0, the ions stop moving, that is, the ion wind disappears, thus causing the ion wind module to fail.
[0093] Therefore, in this embodiment, the first electrode 311 and the second electrode 312A are respectively connected to the positive and negative terminals of the AC power supply. The electric field between the first electrode 311 and the second electrode 312A will change continuously, thereby causing the ions to move continuously, reducing the risk of failure of the ion wind module, and thus improving the working stability of the heat dissipation device.
[0094] Referring to Figures 2 and 3, the first direction X in Figure 2 is parallel to the sixth direction P in Figure 3. Therefore, the plane containing the second direction Y and the third direction Z is parallel to the plane containing the fourth direction M and the fifth direction N. Based on this, during the installation of the ion wind module, it is only necessary to ensure that the first direction X is parallel to the sixth direction P. The second direction Y and the fifth direction N can be parallel or have a preset angle between them, and the third direction Z and the fourth direction M can also be parallel or have a preset angle between them. This improves the flexibility of the ion wind module's setting angle, thereby reducing the installation difficulty of the ion wind module.
[0095] For example, Figure 5 is a schematic diagram of the distribution of fins and discharge structures in one embodiment, and Figure 6 is a bottom view of Figure 5. In one possible design, as shown in Figures 5 and 6, the first direction X is parallel to the sixth direction P, the second direction Y is parallel to the fifth direction N, and the third direction Z is parallel to the fourth direction M.
[0096] For example, Figure 7 is a schematic diagram of the distribution of fins and discharge structures in one embodiment, and Figure 8 is a bottom view of Figure 7. In another possible design, as shown in Figures 7 and 8, the first direction X is parallel to the sixth direction P, the second direction Y is parallel to the fourth direction M, and the third direction Z is parallel to the fifth direction N.
[0097] Referring again to Figure 3, in the plane containing the fifth direction N and the sixth direction P, the cross-sectional shape of the first electrode 311 can be a circle as shown in Figure 4, or it can be a triangle, quadrilateral, serrated, or other polygonal structure. In the plane containing the fourth direction M and the sixth direction P, the cross-sectional shape of the first electrode 311 can be a trapezoid, rectangle, serrated, or other polygonal structure. This embodiment does not impose special limitations on the cross-sectional shape of the first electrode 311 to improve the structural flexibility of the first electrode 311. Furthermore, this embodiment does not impose special limitations on the dimensions of the first electrode 311 in any direction.
[0098] Referring again to Figure 3, in the plane containing the fifth direction N and the sixth direction P, the cross-sectional shape of the second electrode 312A can be a rectangle as shown in Figure 4, or it can be a circle, triangle, serrated shape, or other polygonal structure. In the plane containing the fourth direction M and the sixth direction P, the cross-sectional shape of the second electrode 312A can be a trapezoid, rectangle, serrated shape, or other polygonal structure. This embodiment does not impose special limitations on the cross-sectional shape of the second electrode 312A to improve the structural flexibility of the second electrode 312A. Furthermore, this embodiment does not impose special limitations on the dimensions of the second electrode 312A in any direction.
[0099] Figure 9 is a right view of the discharge structure in Figure 4. In one possible design, referring to both Figure 4 and Figure 9, the projection of the dielectric layer 312B overlaps with the projection of the first electrode 311 in the plane containing the sixth direction P and the fifth direction N. Figures 4 and 9 show an example where the first electrode 311 is completely covered by the dielectric layer 312B.
[0100] Figure 10 is a schematic diagram of the discharge structure in another embodiment, and Figure 11 is a right view of the discharge structure in Figure 10. In another possible design, referring to both Figures 10 and 11, there is a greater than zero distance between the projection of the dielectric layer 312B and the projection of the first electrode 311 in the plane containing the sixth direction P and the fifth direction N.
[0101] The embodiments of this application do not impose special restrictions on the distance between the dielectric layer 312B and the first electrode 311, or on the size of the dielectric layer in the sixth direction P, so as to increase the flexibility of the relative position of the dielectric layer 312B and the first electrode 311.
[0102] Referring to Figure 10, the thickness of the dielectric layer 312B in the fifth direction N is 0.01 mm to 5 mm. Specifically, the thickness of the dielectric layer 312B can be 0.01 mm, 0.03 mm, 0.05 mm, 0.07 mm, 0.09 mm, 0.1 mm, 0.11 mm, 0.13 mm, 0.15 mm, 0.17 mm, 0.19 mm, 0.2 mm, 0.21 mm, 0.23 mm, 0.25 mm, 0.27 mm, 0.29 mm, 0.3 mm, 0.31 mm, 0.33 mm, 0.35 mm, 0.37 mm, 0.39 mm, 0.4 mm, 0.41 mm, 0.43 mm, 0.45 mm, 0.47 mm, 0.49 mm, 0.5 mm, etc.
[0103] In this embodiment, if the thickness of the dielectric layer 312B is small, for example, less than 0.01 mm, the insulation effect of the dielectric layer 312B is poor, and there is a risk that ions will adhere to the surface of the dielectric layer 312B, resulting in a reduction in the ion wind. If the thickness of the dielectric layer 312B is large, for example, greater than 5 mm, the material cost of the dielectric layer 312B is high, and the overall size of the ion wind module is large. Therefore, the thickness of the dielectric layer 312B is 0.01 mm to 5 mm, which can improve the insulation effect of the dielectric layer 312B and reduce the overall size of the ion wind module.
[0104] In one possible design, referring again to Figure 10, the extension direction of the dielectric layer 312B is parallel to the extension direction of the second electrode 312A in the plane containing the sixth direction P and the fifth direction N. Figure 12 is a schematic diagram of the discharge structure in another embodiment. In another possible design, as shown in Figure 12, the extension direction of the dielectric layer 312B and the extension direction of the second electrode 312A have an angle greater than zero in the plane containing the sixth direction P and the fifth direction N. The embodiments of this application do not impose special limitations on the extension directions of the dielectric layer 312B and the second electrode 312A, thereby improving the flexibility of the arrangement of the dielectric layer 312B and the second electrode 312A.
[0105] In one possible design, as shown in Figure 12, within the plane containing the fifth direction N and the sixth direction P, the extension direction of the electrode module 312, composed of the dielectric layer 312B and the second electrode 312A, is parallel to the sixth direction P. Figure 13 is a schematic diagram of the discharge structure in another embodiment. In another possible design, as shown in Figure 13, within the plane containing the fifth direction N and the sixth direction P, the extension direction of the electrode module 312 may have an angle greater than zero with the sixth direction P. The extension direction of the electrode module 312 in the embodiments of this application is not specifically limited to improve the flexibility of the electrode module 312's configuration.
[0106] Based on the first electrode 311 and electrode module 312A in any of the above embodiments, the first electrode 311 and electrode module 312A have the following possible arrangement forms:
[0107] Figure 14 is a schematic diagram of the discharge structure in another embodiment. In one possible design, as shown in Figure 14, within a discharge structure 31, there is one first electrode 311 and one electrode module 312A, which are arranged alternately in the fifth direction N. The fact that there is only one first electrode 311 and one electrode module 312A within a single discharge structure 31 allows the discharge structure 31 to have a smaller size, thereby increasing the number of discharge structures 31 that can be installed within a limited space and improving the cooling effect.
[0108] Figure 15 is a schematic diagram of the discharge structure in another embodiment. In one possible design, as shown in Figure 15, within a discharge structure 31, there is one first electrode 311 and two electrode modules 312A. Along the fifth direction N, the first electrode 311 is located between the two electrode modules 312A, such that two adjacent electrode modules 312A share one first electrode 311. This arrangement reduces the number of first electrodes 311, thereby helping to reduce the material cost of the ion wind module and simplify the electrical connection structure between the discharge structure 31 and the AC power supply.
[0109] Figure 16 is a schematic diagram of the discharge structure in another embodiment. In one possible design, as shown in Figure 16, within a discharge structure 31, there are two first electrodes 311 and one electrode module 312A. Along the fifth direction N, the electrode module 312A is located between the two first electrodes 311, such that two adjacent first electrodes 311 share one electrode module 312A. This arrangement reduces the number of electrode modules 312A, thereby helping to reduce the material cost of the ion wind module and simplify the electrical connection structure between the discharge structure 31 and the AC power supply.
[0110] Based on the arrangement of the first electrode 311 and electrode module 312A in the above three embodiments, the number of discharge structures 31 can also be multiple. As shown in Figure 16, multiple discharge structures 31 can be arranged at intervals along the fifth direction N. Figure 17 is a schematic diagram of the discharge structure in another embodiment. As shown in Figure 17, they can also be arranged at intervals along the sixth direction P to increase the number of discharge structures 31, thereby increasing the airflow of the ion wind generated by the ion wind module and thus improving the heat dissipation efficiency of the heat dissipation device.
[0111] The system uses only one AC power source to reduce the number of AC power sources, thereby simplifying the complexity of electrical connections and reducing the overall size of the ion wind module. Furthermore, adjacent discharge structures 31 are connected in parallel, reducing the impact of a damaged discharge structure 31 on the overall circuit and thus improving the operational stability of the heat dissipation device.
[0112] Based on the discharge structure shown in Figure 14, Figure 18 shows the electrical connection structure of the first electrode, the second electrode, and the AC power supply in one embodiment. As shown in Figure 18, the AC power supply 32 is provided with a first lead 321 and a second lead 322. One of the first lead 321 and the second lead 322 is connected to the negative terminal of the AC power supply 32, and the other is connected to the positive terminal of the AC power supply 32. Multiple first electrodes 311 are electrically connected to the first lead 321, and multiple second electrodes 312A are electrically connected to the second lead 322, thereby realizing the parallel connection of adjacent discharge structures.
[0113] In this embodiment, one of the first electrode 311 and the second electrode 312A can be grounded. Figure 19 shows the electrical connection structure of the first electrode and the second electrode with the AC power supply in one embodiment, with the second electrode 312A grounded via the second lead 322 as an example. Figure 20 shows the electrical connection structure of the first electrode and the second electrode with the AC power supply in one embodiment, with the first electrode 311 grounded via the first lead 321 as an example.
[0114] Based on the discharge structure shown in Figure 15, Figure 21 shows the electrical connection structure of the first electrode, the second electrode, and the AC power supply in one embodiment. As shown in Figure 21, multiple first electrodes 311 are electrically connected to the first lead 321, and multiple second electrodes 312A are electrically connected to the second lead 322, thereby realizing the parallel connection of adjacent discharge structures.
[0115] In this embodiment, one of the first electrode 311 and the second electrode 312A can be grounded. Figure 22 shows the electrical connection structure of the first electrode and the second electrode with the AC power supply in one embodiment, with the second electrode 312A grounded via the second lead 322 as an example. Figure 23 shows the electrical connection structure of the first electrode and the second electrode with the AC power supply in one embodiment, with the first electrode 311 grounded via the first lead 321 as an example.
[0116] Based on the discharge structure shown in Figure 16, Figure 24 shows the electrical connection structure of the first electrode, the second electrode, and the AC power supply in one embodiment. As shown in Figure 24, multiple first electrodes 311 are electrically connected to the first lead 321, and multiple second electrodes 312A are electrically connected to the second lead 322, thereby realizing the parallel connection of adjacent discharge structures.
[0117] In this embodiment, one of the first electrode 311 and the second electrode 312A can be grounded. Figure 25 shows the electrical connection structure of the first electrode and the second electrode with the AC power supply in one embodiment, with the second electrode 312A grounded via the second lead 322 as an example. Figure 26 shows the electrical connection structure of the first electrode and the second electrode with the AC power supply in one embodiment, with the first electrode 311 grounded via the first lead 321 as an example.
[0118] Based on the discharge structure shown in Figure 17, Figure 27 shows the electrical connection structure of the first electrode, the second electrode, and the AC power supply in one embodiment. As shown in Figure 27, two adjacent discharge structures 31 along the sixth direction P are respectively denoted as the first structure 313 and the second structure 314. The first lead 321 is located between the first structure 313 and the second structure 314. The first electrode 311 in the first structure 313 and the second electrode 312A in the second structure 314 are both electrically connected to the first lead 321. The second electrode 312A in the first structure 313 and the first electrode 311 in the second structure 314 are both electrically connected to the first lead 321, thereby realizing the parallel connection of adjacent discharge structures.
[0119] In this embodiment, the first lead 321 is located between the first structure 313 and the second structure 314. The first electrode 311 in the first structure 313 and the second electrode 312A in the second structure 314 are both electrically connected to the first lead 321, which simplifies the electrical connection structure of the first structure 313 and the second structure 314 and helps to shorten the wiring cycle of the first structure 313 and the second structure 314.
[0120] In this embodiment, one of the first electrode 311 and the second electrode 312A can be grounded. Figure 28 shows the electrical connection structure of the first and second electrodes with the AC power supply in one embodiment, with the second electrode 312A grounded via the second lead 322 as an example. Figure 29 shows the electrical connection structure of the first and second electrodes with the AC power supply in one embodiment, with the first electrode 311 grounded via the first lead 321 as an example.
[0121] In any of the above embodiments, grounding one of the first electrode 311 and the second electrode 312A can improve the safety of the circuit, reduce safety problems caused by leakage, and thus improve the safety of the heat dissipation device.
[0122] For the same or similar parts among the various embodiments in this specification, please refer to each other.
Claims
1. A heat dissipating device, characterized by, The heat dissipation device comprises: a base; fins mounted on the base; an ion wind module mounted on the base, the ion wind module comprising at least a discharge structure and an alternating current power supply, the discharge structure comprising at least a first electrode, a second electrode and a dielectric layer, at least a part of the first electrode being exposed to the external environment, at least a part of the second electrode being embedded in the dielectric layer to form an electrode module; in a sixth direction, a geometric center of the first electrode and a geometric center of the second electrode have a preset distance greater than zero, in a fifth direction, a projection area of the first electrode is greater than or less than a projection area of the second electrode; one of the first electrode and the second electrode is electrically connected to a positive electrode of the alternating current power supply, and the other is electrically connected to a negative electrode of the alternating current power supply, and an ion wind can be generated between the first electrode and the second electrode, and the ion wind is used for heat dissipation of the fins.
2. The heat dissipating device according to claim 1, wherein The fins extend along a first direction, the number of fins is multiple, and multiple fins are distributed along a second direction. The sixth direction is parallel to the first direction, so that the movement direction of the ion wind is parallel to the first direction.
3. The heat dissipating device of claim 2, wherein In a plane perpendicular to the first direction and the sixth direction, the fifth direction is parallel to the second direction. Alternatively, in a plane perpendicular to the first direction and the sixth direction, the fifth direction is perpendicular to the second direction.
4. The heat dissipating device according to any one of claims 1 to 3, characterized in that, In one of the discharge structures, the number of the first electrode and the electrode module is one. Alternatively, in one of the discharge structures, the number of the first electrode is one, and the number of the electrode module is two, and the first electrode is located between the two electrode modules along the fifth direction. Alternatively, in one of the discharge structures, the number of the first electrode is two, and the number of the electrode module is one, and the electrode module is located between the two first electrodes along the fifth direction.
5. The heat dissipating device of claim 4, wherein The number of the discharge structures is multiple, and multiple discharge structures are arranged along the fifth direction and / or the sixth direction.
6. The heat dissipating device according to claim 5, wherein The number of the alternating current power supply is one, and adjacent discharge structures are connected in parallel.
7. The heat dissipating device according to claim 6, wherein When multiple discharge structures are arranged along the sixth direction, the alternating current power supply comprises a first lead-out wire and a second lead-out wire, one of the first lead-out wire and the second lead-out wire is connected to the positive electrode of the alternating current power supply, and the other is connected to the negative electrode of the alternating current power supply. The discharge structure comprises at least a first structure and a second structure, along the sixth direction, the first lead-out wire is located between the first structure and the second structure, the first electrode of the first structure and the second electrode of the second structure are respectively electrically connected to the first lead-out wire, and the second electrode of the first structure and the first electrode of the second structure are respectively electrically connected to the second lead-out wire.
8. The heat dissipating device according to any one of claims 1 to 7, characterized in that, In the plane in which the sixth direction is located, the extension direction of the electrode module is parallel to the sixth direction, or a preset included angle between the extension direction of the electrode module and the sixth direction is greater than zero.
9. The heat dissipating device of claim 8, wherein, In a plane in which the sixth direction lies, the extension direction of the dielectric layer is parallel to the extension direction of the second electrode, or a preset included angle between the extension direction of the dielectric layer and the extension direction of the second electrode is greater than zero.
10. The heat dissipating device according to any one of claims 1 to 9, characterized in that, In the fifth direction, the thickness of the dielectric layer is 0.01mm-5mm.
11. The heat dissipating device according to any one of claims 1 to 10, wherein Along the fifth direction, the projection of the first electrode and the projection of the electrode module exist overlapping parts. Or, along the fifth direction, the projection of the first electrode and the projection of the electrode module exist a preset distance.
12. The heat dissipating device according to any one of claims 1 to 11, characterized in that, The cross-sectional profile shape of the first electrode is circular, triangular, quadrilateral or zigzag.
13. The heat dissipating device according to any one of claims 1 to 12, characterized in that, The cross-sectional profile shape of the second electrode is circular, triangular, quadrilateral or zigzag.
14. The heat dissipating device according to any one of claims 1 to 13, characterized in that, The first electrode or the second electrode is grounded.
15. The heat dissipating device according to any one of claims 1 to 14, characterized in that, Along the first direction, the fin is located on one side of the ion wind module. Or, along the first direction, the fin is located on both sides of the ion wind module.
16. A communication system, characterized by The communication system comprises: A heating element; The heat dissipation device of any one of claims 1-15, the base body is attached to the heating element, and the base body is used to transfer the heat of the heating element to the fin.