WO2021115249A1 - 电路板装置以及电子设备 - Google Patents
电路板装置以及电子设备 Download PDFInfo
- Publication number
- WO2021115249A1 WO2021115249A1 PCT/CN2020/134476 CN2020134476W WO2021115249A1 WO 2021115249 A1 WO2021115249 A1 WO 2021115249A1 CN 2020134476 W CN2020134476 W CN 2020134476W WO 2021115249 A1 WO2021115249 A1 WO 2021115249A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- circuit board
- semiconductor structure
- electronic device
- semiconductor
- structural members
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0201—Thermal arrangements, e.g. for cooling, heating or preventing overheating
- H05K1/0203—Cooling of mounted components
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B21/00—Machines, plants or systems, using electric or magnetic effects
- F25B21/02—Machines, plants or systems, using electric or magnetic effects using Peltier effect; using Nernst-Ettinghausen effect
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0201—Thermal arrangements, e.g. for cooling, heating or preventing overheating
- H05K1/0203—Cooling of mounted components
- H05K1/0209—External configuration of printed circuit board adapted for heat dissipation, e.g. lay-out of conductors, coatings
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
- H05K7/205—Heat-dissipating body thermally connected to heat generating element via thermal paths through printed circuit board [PCB]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2321/00—Details of machines, plants or systems, using electric or magnetic effects
- F25B2321/02—Details of machines, plants or systems, using electric or magnetic effects using Peltier effects; using Nernst-Ettinghausen effects
- F25B2321/025—Removal of heat
Definitions
- the present invention relates to the technical field of communication equipment, and in particular to a circuit board device and electronic equipment.
- the best way to solve the heat dissipation is to increase the self-heat dissipation ability in direct contact with the heating element.
- Conduction or emission through the PCB board is one of the effective ways to solve the heat dissipation problem.
- the widely used PCB boards are copper clad/epoxy glass cloth substrates or phenolic resin glass cloth substrates. Although these substrates have excellent electrical properties and processing properties, they have poor heat dissipation. Generally, they are used from the surface of the component to the surrounding air. In heat dissipation, circuit board parts commonly use heat dissipation methods to radiate outwards and the surrounding air flow. There are also other methods, such as air-cooling and water-cooling, fans, etc., but as electronic products have entered the miniaturization of components, high-density installation, and high In the era of heat-generating assembly, it is not enough to rely on the surface of a component with a very small surface area to dissipate heat. At the same time, due to the massive use of surface-mounted components, a large amount of heat generated by the components is transferred to the PCB board.
- the current heat dissipation method has at least the following shortcomings: 1.
- the heat dissipation effect is not good according to the way the parts themselves radiate and the surrounding air flow; 2.
- the area of the parts and the circuit board is miniaturized, and the metal area in direct contact with the original is getting smaller and smaller , The heat dissipation effect is getting worse and worse; 3.
- the installation of circuit board devices interferes greatly with the structure of existing electronic equipment.
- the invention discloses a circuit board device and an electronic device to solve the problem of poor heat dissipation effect of the existing heat dissipation method and interference with the structure of the electronic device.
- an embodiment of the present invention discloses a circuit board device, which includes a circuit board and electronic devices arranged on the circuit board.
- the circuit board device further includes a refrigeration component and a DC power supply.
- the refrigeration component includes a spacer. At least two semiconductor structural members arranged on the circuit board, two adjacent semiconductor structural members are connected in series through a conductor, and one of the two adjacent semiconductor structural members is an N-type semiconductor structural member, The other is a P-type semiconductor structure.
- the refrigeration assembly is provided with an insulating structure towards the cold end of the electronic device.
- the refrigeration assembly is connected to the electronic device through the insulating structure.
- the DC power supply is connected to the electronic device.
- the refrigeration assembly is electrically connected.
- an embodiment of the present invention also discloses an electronic device, including the circuit board device described above.
- the circuit board device disclosed in the present invention connects the electronic device in the electronic equipment with the cold end of the refrigeration component.
- the DC power supply When the DC power supply is turned on, the current will cause the electrons in the semiconductor structure to be transferred. In the process of current transmission and electron transfer In the semiconductor structure, the temperature difference and heat transfer will occur at the joint.
- the direction of heat transfer in the semiconductor structure can be controlled by the direction of current flow.
- the current direction of the DC power supply is selected to control the heat from the semiconductor structure.
- the end close to the electronic device moves toward the other end, so that the end of the semiconductor structure close to the electronic device is cooled down, thereby realizing the heat dissipation of the electronic device.
- the electronic device disclosed in the present invention does not need to add a structure such as a heat dissipation fan, thereby reducing interference to the structure of the electronic device, saving space, and at the same time, using the heat transfer of the semiconductor structure to replace the traditional Radiation heat dissipation and air convection greatly improve the heat dissipation efficiency.
- FIG. 1 is a schematic diagram of a circuit board device disclosed in an embodiment of the present invention.
- Figure 2 is a schematic diagram of a circuit board disclosed in an embodiment of the present invention.
- Figure 3 is a schematic diagram of a refrigeration assembly disclosed in an embodiment of the present invention.
- FIG. 4 is a schematic diagram of the first connection of the semiconductor structure disclosed in the embodiment of the present invention.
- FIG. 5 is a schematic diagram of the second connection of the semiconductor structure disclosed in the embodiment of the present invention.
- FIG. 6 is a schematic diagram of the third connection of the semiconductor structure disclosed in the embodiment of the present invention.
- 100-electronic device 200-circuit board; 210-through hole; 300-refrigeration component; 310-semiconductor structure; 311-P-type semiconductor structure; 312-N-type semiconductor structure; 320-first electrical conductor; 330 -Second conductor; 400-insulating layer; 500-heat sink; 600-DC power supply.
- the disclosed circuit board device includes a refrigeration assembly 300, a DC power supply 600, a circuit board 200, and an electronic device 100 arranged on the circuit board 200.
- the refrigeration assembly 300 includes a spacer. At least two semiconductor structures 310 are arranged on the circuit board 200. The two adjacent semiconductor structures 310 are connected in series and are respectively an N-type semiconductor structure 312 and a P-type semiconductor structure 311.
- the refrigeration component 300 faces the electronic components.
- One side of the device 100 is provided with an insulating structure, and the refrigeration assembly 300 is connected to the electronic device 100 through the insulating structure, so that the cold end of the refrigeration assembly 300 is insulated from the electronic device 100 and connected with heat conduction.
- the DC power supply 600 is connected to the refrigeration
- the assembly 300 is electrically connected.
- the circuit board device disclosed in this embodiment connects the electronic device 100 in the electronic device with the cold end of the refrigeration assembly 300.
- the DC power supply 600 When the DC power supply 600 is turned on, the current will cause the electrons in the semiconductor structure 310 to transfer. During the process of electron transfer and electron transfer, the semiconductor structure 310 will produce temperature difference and heat transfer at the joint.
- the direction of heat transfer in the semiconductor structure 310 can be controlled by the direction of current flow.
- the DC power supply 600 is selected to control The direction of the current causes the heat to move from the end of the semiconductor structure 310 close to the electronic device 100 toward the other end, so that the end of the semiconductor structure 310 close to the electronic device 100 cools down, thereby realizing the heat dissipation of the electronic device 100.
- the circuit board device disclosed in this embodiment does not need to add a heat dissipation fan and other structures, thereby reducing the interference to the structure of the electronic equipment, saving space, and at the same time, using the semiconductor structure 310 Heat transfer replaces traditional radiant heat dissipation and air convection, which greatly improves heat dissipation efficiency.
- the direction of heat transfer is determined by the direction of the current, that is, when a direct current flows in the semiconductor structure 310, heat will flow from one end of the device. To the other end, change the direction of the current, you can change the direction of the heat flow, transfer the heat to the other end, change the size of the current, and the temperature of the refrigeration is different.
- the direction of the current is controlled so that the end of the semiconductor structure 310 close to the electronic device 100 is the cold end. According to different electronic devices 100, the current can be adjusted so that electronic devices of different powers can be obtained. Adequate heat dissipation.
- the heat transfer of the semiconductor structure 310 makes one end become the cold end and the other end becomes the hot end.
- heat will continue to accumulate at the hot end of the semiconductor structure 310.
- a heat sink 500 can be provided on the hot end of the semiconductor structure 310.
- the setting of the heat sink 500 It can help the hot end of the semiconductor to quickly dissipate heat, so as to prevent the temperature of the hot end of the semiconductor structure 310 from being too high.
- the heat sink 500 and the semiconductor structure 310 should also be insulated connection, so as to avoid leakage.
- the circuit board 200 can be a PCB board.
- the PCB board can be directly made into a large PCB pad or a large copper surface of the PCB, or it can be laid in the form of grid copper. In order to prevent oxidation of the pad, it can also be butt welded.
- the plate is made of immersion gold surface treatment.
- a through hole 210 may be opened on the circuit board 200, and then the semiconductor structure 310 is installed in the through hole 210. Utilizing the positions on the circuit board 200 without lines to open the through holes 210 to accommodate the semiconductor structure 310 can integrate the semiconductor structure 310 and the circuit board 200 into one body, thereby further saving space and further reducing the influence of structural interference.
- the number of the through holes 210 may be at least two, the number of the semiconductor structure 310 and the number of the through holes 210 may be equal, and each semiconductor structure 310 is correspondingly mounted in one through hole 210.
- the through holes 210 can be arranged in a row, that is, a plurality of through holes 210 are located on the same straight line, which can simplify the wiring and make the conduction of the semiconductor structure 310 more convenient and orderly.
- the two ends of the semiconductor structure 310 can be extended to the two ends of the through hole 210, or the two ends of the semiconductor structure 310 can extend out of the two ends of the through hole 210, and then the adjacent semiconductor structure 310 can pass through The ends are connected to each other. In this way, when the temperature of the semiconductor structure 310 is transferred, the cold end of the semiconductor structure 310 can fully exchange heat with the electronic device 100, and the hot end of the semiconductor structure 310 can transfer heat to a location other than the circuit board 200. Avoid causing heat to accumulate on the circuit board 200, so as to avoid affecting the normal operation of the circuit board 200.
- first conductive body 320 can be used to connect the two semiconductor structures 310.
- the first conductive body 320 can be mounted on either end of the semiconductor structure 310, so that a "U"-shaped structure is formed between the two semiconductor structures 310 and the first conductive body 320, so that the semiconductor structure 310 can be close to the electronics.
- One end of the device 100 forms a cold end, and the other end of the semiconductor structure 310 forms a hot end, so as to dissipate heat.
- the first conductive body 320 may not be arranged between the two semiconductor structural members 310.
- the ends of the two semiconductor structural members 310 are close to each other. Connect to form a "V" shape between the two semiconductor structures 310, or form a series connection between the semiconductor structures 310, and form a hot end and a cold end for heat dissipation. At this time, only the circuit board 200
- the through holes 210 are arranged to be inclined to each other and communicate with each other so that the two semiconductor structures 310 can form such a structure.
- the semiconductor structural members 310 when the number of semiconductor structural members 310 is more than three, if the first conductor 320 is not arranged between the semiconductor structural members 310, the semiconductor structural members 310 can be inclined to each other, so that a plurality of semiconductors
- the structural member 310 is formed in the shape of "W". If the semiconductor structures 310 are arranged in parallel, the first conductor 320 needs to be installed between the semiconductor structures 310.
- the end of the semiconductor structure 310 facing the insulating layer 400 is the first end, and the semiconductor structure 310 is away from the insulating layer.
- One end of 400 is the second end, a plurality of semiconductor structures 310 are arranged at intervals, the first end of the semiconductor structure 310 and the first end of the adjacent semiconductor structure 310 are electrically connected by the first conductor 320, and the semiconductor structure The second end of 310 and the second end of another adjacent semiconductor structure 310 are electrically connected by a first conductive body 320. That is, a plurality of semiconductor structures 310 are connected end to end to form a series connection, so that when current flows through the semiconductor structure 310, if the current flows in from the second end of the first semiconductor structure 310, the current will flow from the semiconductor structure.
- the first end of the member 310 flows out and flows in from the first end of the second semiconductor structure member 310, and then flows out from the second end of the second semiconductor structure member 310, and from the second end of the third semiconductor structure member 310.
- the end flows into the third semiconductor structure 310, so that the first ends of all the semiconductor structures 310 are cold ends, and the second ends of the semiconductor structure 310 are hot ends.
- the first electrical conductor 320 may be placed at the port of the through hole 210.
- the through hole 210 includes a first end facing the electronic device 100 and a second end facing away from the electronic device 100.
- a first conductor 320 is arranged between the first end of the through hole 210 and the first end of the adjacent through hole 210.
- a second conductive body 330 is provided between the second end of the through hole 210 and the second end of another adjacent through hole 210, so that the plurality of semiconductor structures 310 are connected in series.
- both the first electrical conductor 320 and the second electrical conductor 330 are metal conductors, and the metal conductors are exposed on the surface while conducting two adjacent semiconductor structures 310.
- the metal conductor may be a conductive material directly attached to the circuit board 200 such as a conductive coating or a conductive plating layer.
- the first conductive body 320 is small in size, and can make full use of the blank part on the circuit board 200, so that the connection between the semiconductor structural members 310 is more stable, and the structural interference of the electronic device is smaller.
- the insulating structure may be an insulating layer 400 or an insulating layer 400. It can be an insulating material with good thermal conductivity such as ceramic sheet or rubber.
- the main covering positions of the insulating layer 400 are the positions of the semiconductor structure 310 and the metal conductors, and other positions may be open to facilitate the electrical connection between the electronic device 100 and the circuit board 200. Since the insulating layer 400 is an integral structure, when heat is transferred inside the insulating layer 400, it is faster and more uniform.
- the temperature of the insulating layer 400 will be lower than the temperature of the electronic device 100 when it is in a heating state. It can be in full contact with the entire bottom of the electronic device 100, so that the electronic device 100 has a larger heat dissipation surface, so that the electronic device 100 has a faster heat dissipation speed.
- the first conductor 320 and the second conductor 330 are both configured as the first conductor 320, such as a wire, which is wrapped with an insulating material.
- the insulating material on the outer periphery of the wire can be regarded as a refrigeration material.
- the first conductor 320 can be arbitrarily arranged on the circuit board 200 without worrying about affecting the circuit of the circuit board 200 itself. Therefore, when connecting two semiconductor insulating parts, The shortest line can be used for connection, thereby reducing power loss.
- an insulating layer 400 may also be provided between the wire and the electronic device 100 at this time.
- This embodiment also discloses an electronic device, including the circuit board device as described above.
- the electronic device provided in this embodiment does not need to add a heat dissipation fan and other structures, thereby reducing interference with the structure of the electronic device and saving space.
- the heat transfer of the semiconductor structure 310 is used to replace the traditional radiation heat dissipation and air convection, which greatly improves the heat dissipation efficiency.
- the electronic devices disclosed in the embodiments of the present invention may be devices such as mobile phones, tablet computers, e-book readers, game consoles, smart watches, etc.
- the embodiments of the present invention do not limit the specific types of electronic devices.
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structure Of Printed Boards (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
Description
Claims (10)
- 一种电路板装置,包括电路板(200)以及设置在电路板(200)上的电子器件(100),所述电路板装置还包括制冷组件(300)和直流电源(600),所述制冷组件(300)包括间隔设置在所述电路板(200)上的至少两个半导体结构件(310),相邻的两个所述半导体结构件(310)串联,且相邻的两个所述半导体结构件中一个为N型半导体结构件(312),另一个为P型半导体结构件(311),所述制冷组件(300)朝向所述电子器件(100)的冷端设置有绝缘结构件,所述制冷组件(300)通过所述绝缘结构件与所述电子器件(100)相连,所述直流电源(600)与所述制冷组件(300)电连接。
- 根据权利要求1所述的电路板装置,其中,所述电路板(200)上开设有通孔(210),所述半导体结构件(310)安装在所述通孔(210)中。
- 根据权利要求2所述的电路板装置,其中,所述通孔(210)的数量至少为两个,所述半导体结构件(310)的数量与所述通孔(210)的数量相等,每个所述半导体结构件(310)对应地安装在一个所述通孔(210)中。
- 根据权利要求3所述的电路板装置,其中,所述半导体结构件(310)的两端分别延伸至所述通孔(210)的两端,或者,所述半导体结构件(310)的两端分别伸出所述通孔(210)的两端。
- 根据权利要求1所述的电路板装置,其中,所述半导体结构件(310)包括朝向所述电子器件(100)的第一端和背离所述电子器件(100)的第二端,所述半导体结构件(310)的第一端与相邻一个所述半导体结构件(310)的第一端之间电连接有第一导电体(320),所述半导体结构件(310)的第二端与相邻的另一个所述半导体结构件(310)的第二端之间电连接有第二导电体(330)。
- 根据权利要求5所述的电路板装置,其中,所述第一导电体(320)为金属导体,所述第二导电体(330)为金属导体。
- 根据权利要求1所述的电路板装置,其中,所述绝缘结构件为绝缘层(400),所述绝缘层(400)位于所述制冷组件(300)和所述电子器件(100)之间,所述制冷组件(300)的冷端通过所述绝缘层(400)与所述电子器件 (100)连接。
- 根据权利要求1所述的电路板装置,其中,相邻的两个所述半导体结构件(310)通过导线串联。
- 根据权利要求1至8任一项所述的电路板装置,还包括散热片(500),所述散热片(500)设置在所述制冷组件(300)背离所述电子器件(100)的一侧。
- 一种电子设备,包括权利要求1至9任一项所述的电路板装置。
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911272371.4 | 2019-12-12 | ||
| CN201911272371.4A CN110996491B (zh) | 2019-12-12 | 2019-12-12 | 电路板装置以及电子设备 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2021115249A1 true WO2021115249A1 (zh) | 2021-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2020/134476 Ceased WO2021115249A1 (zh) | 2019-12-12 | 2020-12-08 | 电路板装置以及电子设备 |
Country Status (2)
| Country | Link |
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| CN (1) | CN110996491B (zh) |
| WO (1) | WO2021115249A1 (zh) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110996491B (zh) * | 2019-12-12 | 2021-03-23 | 维沃移动通信有限公司 | 电路板装置以及电子设备 |
| CN111726934B (zh) * | 2020-07-02 | 2022-11-11 | 西安电子科技大学芜湖研究院 | 一种利用半导体降温的散热驱动板 |
| CN112584610A (zh) * | 2020-12-14 | 2021-03-30 | 维沃移动通信有限公司 | 电路板装置及电子设备 |
| CN117177431A (zh) * | 2022-05-25 | 2023-12-05 | 鹏鼎控股(深圳)股份有限公司 | 电路板及其制备方法 |
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| US5168339A (en) * | 1990-04-20 | 1992-12-01 | Matsushita Electrical Industrial Co., Ltd. | Thermoelectric semiconductor having a porous structure deaerated in a vacuum and thermoelectric panel using p-type and n-type thermoelectric semiconductors |
| CN201680648U (zh) * | 2010-04-27 | 2010-12-22 | 上海市七宝中学 | 一种制冷器 |
| CN203478683U (zh) * | 2013-07-05 | 2014-03-12 | 赖耀华 | 一种半导体制冷器 |
| CN105890066A (zh) * | 2016-06-03 | 2016-08-24 | 海信(山东)空调有限公司 | 一种变频空调室外机电路板散热装置及电控盒 |
| CN209590755U (zh) * | 2019-01-15 | 2019-11-05 | 新乡职业技术学院 | 一种计算机硬件降温装置 |
| CN110620869A (zh) * | 2019-10-29 | 2019-12-27 | 维沃移动通信有限公司 | 摄像模组及电子设备 |
| CN110996491A (zh) * | 2019-12-12 | 2020-04-10 | 维沃移动通信有限公司 | 电路板装置以及电子设备 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102268752B1 (ko) * | 2014-12-05 | 2021-06-24 | 엘지전자 주식회사 | 피씨비 |
| CN209605100U (zh) * | 2019-05-15 | 2019-11-08 | 深圳市同一方光电技术有限公司 | 一种长寿命户外金黄色led灯珠 |
-
2019
- 2019-12-12 CN CN201911272371.4A patent/CN110996491B/zh active Active
-
2020
- 2020-12-08 WO PCT/CN2020/134476 patent/WO2021115249A1/zh not_active Ceased
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5168339A (en) * | 1990-04-20 | 1992-12-01 | Matsushita Electrical Industrial Co., Ltd. | Thermoelectric semiconductor having a porous structure deaerated in a vacuum and thermoelectric panel using p-type and n-type thermoelectric semiconductors |
| CN201680648U (zh) * | 2010-04-27 | 2010-12-22 | 上海市七宝中学 | 一种制冷器 |
| CN203478683U (zh) * | 2013-07-05 | 2014-03-12 | 赖耀华 | 一种半导体制冷器 |
| CN105890066A (zh) * | 2016-06-03 | 2016-08-24 | 海信(山东)空调有限公司 | 一种变频空调室外机电路板散热装置及电控盒 |
| CN209590755U (zh) * | 2019-01-15 | 2019-11-05 | 新乡职业技术学院 | 一种计算机硬件降温装置 |
| CN110620869A (zh) * | 2019-10-29 | 2019-12-27 | 维沃移动通信有限公司 | 摄像模组及电子设备 |
| CN110996491A (zh) * | 2019-12-12 | 2020-04-10 | 维沃移动通信有限公司 | 电路板装置以及电子设备 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110996491B (zh) | 2021-03-23 |
| CN110996491A (zh) | 2020-04-10 |
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