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CN-122002747-A - Heat abstractor and communication system

CN122002747ACN 122002747 ACN122002747 ACN 122002747ACN-122002747-A

Abstract

The application designs a heat dissipation device and a communication system. The ion wind module at least comprises a discharge structure and an alternating current power supply, the discharge structure at least comprises a first electrode, a second electrode and a dielectric layer, at least part of the first electrode is exposed in the external environment, at least part of the second electrode is embedded into the dielectric layer to form an electrode module, one of the first electrode and the second electrode is electrically connected with the positive electrode of the alternating current power supply, the other electrode is electrically connected with the negative electrode of the alternating current power supply, ion wind can be generated between the first electrode and the second electrode, and the heating element is cooled by the ion wind.

Inventors

  • Lv Anru
  • SHI YANGYANG
  • WANG MENG

Assignees

  • 华为技术有限公司

Dates

Publication Date
20260508
Application Date
20241105

Claims (16)

  1. 1. A heat sink, the heat sink comprising: A base; The fins are mounted on the base body; The ion wind module is arranged on the substrate and at least comprises a discharge structure and an alternating current power supply, the discharge structure at least comprises a first electrode, a second electrode and a dielectric layer, at least part of the first electrode is exposed in the external environment, and at least part of the second electrode is embedded into the dielectric layer to form an electrode module; In a sixth direction, a preset distance greater than zero exists between the geometric center of the first electrode and the geometric center of the second electrode, and in a fifth direction, the projection area of the first electrode is greater than or less than the projection area of the second electrode; One of the first electrode and the second electrode is electrically connected with the positive electrode of the alternating current power supply, the other electrode is electrically connected with the negative electrode of the alternating current power supply, ion wind can be generated between the first electrode and the second electrode, and the ion wind is used for radiating heat of the fins.
  2. 2. The heat dissipating device of claim 1, wherein said fins extend in a first direction, said fins being a plurality of said fins, said plurality of said fins being spaced apart in a second direction, said first direction being perpendicular to said second direction; the sixth direction is parallel to the first direction such that a direction of movement of the ion wind is parallel to the first direction.
  3. 3. The heat sink of claim 2, wherein the fifth direction is parallel to the second direction in a plane perpendicular to the first direction and the sixth direction; Or in a plane perpendicular to the first direction and the sixth direction, the fifth direction being perpendicular to the second direction.
  4. 4. A heat sink according to any one of claims 1 to 3, wherein the number of the first electrodes and the electrode modules is one within one of the discharge structures; Or in one of the discharge structures, the number of the first electrodes is one, the number of the electrode modules is two, and the first electrodes are positioned between the two electrode modules along the fifth direction; Or in one of the discharge structures, the number of the first electrodes is two, the number of the electrode modules is one, and the electrode modules are located between the two first electrodes along the fifth direction.
  5. 5. The heat dissipating device of claim 4, wherein the number of discharge structures is plural, and the plural discharge structures are arranged at intervals in the fifth direction and/or the sixth direction.
  6. 6. The heat sink of claim 5 wherein the number of ac power sources is one and adjacent discharge structures are connected in parallel.
  7. 7. The heat dissipating apparatus of claim 6, wherein when the plurality of discharge structures are arranged at intervals in the sixth direction, the ac power source 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 a positive electrode of the ac power source, and the other is connected to a negative electrode of the ac power source; The discharge structure at least comprises a first structure and a second structure, the first outgoing line is located between the first structure and the second structure along the sixth direction, the first electrode of the first structure and the second electrode of the second structure are respectively and electrically connected with the first outgoing line, and the second electrode of the first structure and the first electrode of the second structure are respectively and electrically connected with the second outgoing line.
  8. 8. The heat dissipating device of any one of claims 1 to 7, wherein in a plane in which the sixth direction is located, an extending direction of the electrode module is parallel to the sixth direction, or a preset included angle greater than zero exists between the extending direction of the electrode module and the sixth direction.
  9. 9. The heat dissipating device of claim 8, wherein in the plane in which the sixth direction is located, the extending direction of the dielectric layer is parallel to the extending direction of the second electrode, or a preset included angle greater than zero exists between the extending direction of the dielectric layer and the extending direction of the second electrode.
  10. 10. The heat dissipating device of any one of claims 1 to 9, wherein in the fifth direction, the thickness of the dielectric layer is 0.01mm to 5mm.
  11. 11. The heat sink according to any one of claims 1 to 10, wherein in the fifth direction, there is a superposition of the projection of the first electrode and the projection of the electrode module; or along the fifth direction, a preset distance exists between the projection of the first electrode and the projection of the electrode module.
  12. 12. The heat sink according to any one of claims 1 to 11, wherein the cross-sectional profile shape of the first electrode is circular, triangular, quadrangular or zigzag.
  13. 13. The heat sink according to any one of claims 1 to 12, wherein the cross-sectional profile shape of the second electrode is circular, triangular, quadrangular or zigzag.
  14. 14. The heat sink according to any one of claims 1 to 13, wherein the first electrode or the second electrode is grounded.
  15. 15. The heat sink according to any one of claims 1 to 14, wherein the fins are located on one side of the ion wind module in a first direction; or along the first direction, the fins are positioned at two sides of the ion wind module.
  16. 16. A communication system, the communication system comprising: A heating element; The heat dissipating device of any of claims 1 to 15, wherein the substrate is attached to the heat generating element, and wherein the substrate is configured to transfer heat from the heat generating element to the fins.

Description

Heat abstractor and communication system Technical Field The present application relates to the field of heat dissipation technologies, and in particular, to a heat dissipation device and a communication system. Background The communication system comprises heating elements such as a large-scale multi-receiving antenna system (MMA, massive MIMO Antenna), a remote radio unit (RRU, remote Radio Unit) and the like, and the RRU is taken as a part of the distributed base station system for example, thereby playing an important role in enhancing the capacity of a mobile communication network and improving the service quality. For example, RRU is responsible for the conversion between baseband and radio frequency signals, which is critical for the efficient transmission of data over the air interface, and includes power amplifiers that increase the strength of the transmitted signal to ensure adequate coverage, and RRU designs support multiple carrier frequency operation so that a single physical device can serve different frequency bands or technical standards, e.g., 2G, 3G and 4G services can be supported simultaneously. The RRU can generate higher heat in the working process, and can be installed outdoors, such as a roof, a wall surface, a lamp post and the like due to the fact that the RRU is small in size and light in weight, so that the RRU can be naturally cooled by convection by utilizing the external environment while the network coverage area is expanded rapidly. With the increase of the wireless communication capacity, the heat dissipation requirement of the RRU is also increased, but the cooling effect of the natural convection cooling of the RRU by the external environment is limited, and the cooling effect of the natural convection cooling is directly proportional to the area of the heat dissipation surface of the RRU, so that the miniaturization design and the heat dissipation efficiency of the RRU are mutually restricted. In order to overcome the limitation of natural convection cooling, a fan may be disposed at the RRU, and convection is increased by the fan, but reliability of cooling the fan is poor, for example, there are problems of a decrease in rotation speed, a stop of the fan, and the like. Therefore, how to stably and reliably dissipate heat of heating elements such as MMA, RRU and the like is a technical problem to be solved in the field. Disclosure of Invention In view of the above, the present application provides a heat dissipating device and a communication system capable of dissipating heat from a heat generating element stably and reliably. The application provides a heat dissipating device, which comprises a substrate, fins and an ion wind module, wherein the fins and the ion wind module are arranged on the substrate, the ion wind module at least comprises a discharge structure and an alternating current power supply, the discharge structure at least comprises a first electrode, a second electrode and a medium layer, at least part of the first electrode is exposed in the external environment, at least part of the second electrode is embedded into the medium layer to form an electrode module, an air gap exists between the first electrode and the medium layer along a fifth direction, a preset distance larger than zero exists between the geometric center of the first electrode and the geometric center of the second electrode along a sixth direction, the projection area of the first electrode is larger than or smaller than the projection area of the second electrode along the fifth direction, one of the first electrode and the second electrode is electrically connected with the positive electrode of the alternating current power supply, the other electrode is electrically connected with the negative electrode of the alternating current power supply, and ion wind can be generated between the first electrode and the second electrode, and the ion wind is used for dissipating heat of the fins. In the application, the heating element is cooled by the ion wind, compared with natural convection cooling, the heat radiation efficiency of the heat radiation device on the heating element is improved, and the risks of degradation, even damage and the like of the heating element caused by higher temperature of the heating element are reduced, thereby being beneficial to improving the working stability of the heating element and improving the performance of the heating element. The first electrode and the second electrode are respectively connected with the anode and the cathode of the alternating current power supply, and the electric field between the first electrode and the second electrode can be continuously changed, so that ions continuously move, the risk of failure of the ion wind module is reduced, and the working stability of the heat radiating device is further improved. In one possible design, the fins extend along a first direction, the number of the fins is plural, the fins are distri