WO2019165961A1 - Boîtier de dissipation de chaleur moulé sous pression semi-solide - Google Patents

Boîtier de dissipation de chaleur moulé sous pression semi-solide Download PDF

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Publication number
WO2019165961A1
WO2019165961A1 PCT/CN2019/076222 CN2019076222W WO2019165961A1 WO 2019165961 A1 WO2019165961 A1 WO 2019165961A1 CN 2019076222 W CN2019076222 W CN 2019076222W WO 2019165961 A1 WO2019165961 A1 WO 2019165961A1
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WO
WIPO (PCT)
Prior art keywords
semi
heat dissipation
heat
solid die
cast
Prior art date
Application number
PCT/CN2019/076222
Other languages
English (en)
Chinese (zh)
Inventor
任怀德
陈钦义
王继成
李谷南
黄子强
张莹
Original Assignee
珠海市润星泰电器有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 珠海市润星泰电器有限公司 filed Critical 珠海市润星泰电器有限公司
Publication of WO2019165961A1 publication Critical patent/WO2019165961A1/fr

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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
    • 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
    • H05K7/20409—Outer radiating structures on heat dissipating housings, e.g. fins integrated with the housing
    • 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
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/04—Metal casings

Definitions

  • Embodiments of the present invention relate to the field of product heat dissipation, and in particular, to a heat-dissipating casing with high heat conductivity and light weight.
  • the aluminum alloy die-casting part is the key structural material of the wireless base station, which provides the basis for the electronic components and circuit board fixing inside the base station, and at the same time, the working heat of the electrical component is exported through the heat sink, which is the main component of the base station signal transmitting box body cooling and cooling; Improve the heat dissipation efficiency of the base station casing.
  • the structural design by increasing the heat sink and thinning the heat sink, due to the limitation of the liquid die casting production process, the structure of the casing is reduced in weight, the heat sink is increased, and the thinning is limited to the limit. It is necessary to consider the casing to use other die-casting production processes to achieve high thermal conductivity, light weight, and low cost.
  • the present invention is directed to solving the problems described above. It is an object of the present invention to provide a semi-solid die-cast heat dissipation housing that is highly thermally conductive, lightweight, and low cost.
  • a semi-solid die-cast heat-dissipating casing comprising a semi-solid die-casting casing body, a plurality of heat dissipating slots disposed on a back surface of the semi-solid die casting casing body, and a semi-solid die casting embedded in the heat dissipating slots heat sink.
  • the semi-solid die-casting heat sink forms three heat dissipating zones, respectively being a first heat dissipating zone symmetrically disposed at opposite ends of the semi-solid die casting machine casing body, a third heat dissipating zone, and a first heat dissipating zone and a third heat dissipating zone
  • the height of the semi-solid die-cast heat sink of the first heat dissipation zone and the third heat dissipation zone is 50-150 mm
  • the height of the semi-solid die-cast heat sink of the second heat dissipation zone is 120-180 mm, the first heat dissipation zone
  • the height ratio of the third heat dissipation zone to the semi-solid die-casting heat sink of the second heat dissipation zone is 1:1.5 to 1.7.
  • the interval between the first heat dissipation zone, the third heat dissipation zone and the second heat dissipation zone is 0.1 to 0.25 of the height of the semi-solid die-cast heat sink of the second heat dissipation zone.
  • the first heat dissipation zone and the third heat dissipation zone are symmetrical in a figure-eight shape.
  • the distance between each adjacent two semi-solid die-cast fins in the first heat dissipation zone and the third heat dissipation zone is 5-10 mm.
  • the distance between each adjacent two semi-solid die-cast fins of the second heat dissipating zone is 3 to 8 mm.
  • the semi-solid die-cast heat sink has a thickness of 0.3 to 1.5 mm.
  • the heat dissipating slots have a depth of 3 to 10 mm and a width of 10 to 15 mm.
  • the semi-solid die-cast fins are secured to the heat dissipating slots by soldering or dispensing.
  • the number of semi-solid die-cast heat sinks is 20-80, and the ratio of the number of semi-solid die-cast heat sinks of the first heat dissipation zone to the second heat dissipation zone is 1:1 to 3, and the third heat dissipation zone and the second heat dissipation zone The number of semi-solid die-cast heat sinks is 1:1 to 3.
  • the semi-solid die-cast heat sink casing is made of a semi-solid die-cast aluminum alloy.
  • the semi-solid die-casting heat sink of the invention is processed by aluminum alloy of 6000 series profiles.
  • the back surface of the casing body of the semi-solid die-cast heat-dissipating casing of the present invention is formed by three semi-solid die-casting fins to form three heat-dissipating zones, and the intermediate area of the conventional casing is solved by adjusting the height ratio of the semi-solid die-casting fins between the three heat-dissipating zones.
  • the heat dissipation does not cause heat accumulation in time.
  • the height ratio of the first heat dissipation zone, the third heat dissipation zone and the semi-solid die-casting heat sink of the second heat dissipation zone is 1:1.5 to 1.7, preferably the height ratio is 1. : 1.55 to 1.65, more preferably the height ratio is 1:1.6.
  • the second heat dissipation zone located in the middle of the back side of the semi-solid die-cast heat dissipation case can dissipate heat in time.
  • the first heat dissipating area and the third heat dissipating area of the semi-solid die-casting heat-dissipating casing of the present invention are arranged in a figure-eight shape symmetrically on the back surface of the heat-dissipating casing, and the length of the fins is increased to make the heat-dissipating area of the fins in contact with the air larger, so as to be better Ground heat.
  • the semi-solid die-casting heat-dissipating casing of the invention is die-casted by a semi-solid material, and the heat-dissipating shell structure prepared by the semi-solid process has the advantages of weight reduction, wall thickness reduction and heat dissipation effect, and the original die-casting structure has the same structure weight of 20.5 kg,
  • the weight of the semi-solid die-casting heat-dissipating shell which is formed by the semi-solid process die-casting is controlled to be less than 17.6 kg, and the weight reduction of the product is important, and is more suitable for industrial wide application.
  • the semi-solid die-cast heat sink has a thickness of 0.3 to 1.2 mm
  • the semi-solid die-cast heat sink of the first heat dissipation zone and the third heat dissipation zone has a height of 50 to 150 mm
  • the semi-solid die-cast heat sink of the second heat dissipation zone has a height of 120. ⁇ 180 mm, by thinning the thickness of the heat sink and increasing the height of the heat sink to achieve better and faster heat dissipation.
  • the semi-solid die-casting heat-dissipating casing of the invention has a semi-solid die-casting heat sink with a minimum thickness of 0.3 mm, lighter weight and better heat dissipation.
  • the semi-solid die-cast heat-dissipating casing of the present invention the distance between each adjacent two semi-solid die-casting fins in the first heat-dissipating zone and the third heat-dissipating zone is 5 to 10 mm, and the second heat-dissipating zone is adjacent to two and a half The distance between the solid die-cast fins is 3 to 8 mm, making full use of the cabinet space. Increase the number of heat sinks to improve heat dissipation efficiency.
  • the semi-solid die-casting heat-dissipating casing of the invention has no die-casting draft between adjacent semi-solid die-casting fins, and the height can be 50-180 mm, and the thermal conductivity is increased.
  • the semi-solid die-cast heat-dissipating casing of the present invention is die-casted from a semi-solid die-cast aluminum alloy, has high thermal conductivity, and has a thinner wall thickness, thereby reducing the weight of the heat-dissipating casing.
  • the semi-solid die-casting heat-dissipating casing of the invention, the high-conductivity semi-solid die-casting heat-dissipating shell body is combined with a multi-quantity, ultra-thin and ultra-high heat sink, has the advantages of light weight and high heat conductivity, and can be used as a communication housing. widely used.
  • a semi-solid die-cast heat-dissipating casing comprises a semi-solid die-casting machine body, a plurality of heat-dissipating slots disposed on a back surface of the semi-solid die-casting machine body, and a semi-solid die-casting heat sink embedded in the heat dissipating slots.
  • the semi-solid die-casting heat sink forms three heat dissipating zones, respectively being a first heat dissipating zone symmetrically disposed at opposite ends of the semi-solid die casting machine casing body, a third heat dissipating zone, and a first heat dissipating zone and a third heat dissipating zone Two heat dissipation zones.
  • the first heat dissipation zone and the third heat dissipation zone are symmetrical in a figure-eight shape, and under this condition, the contact area of the semi-solid die-cast heat sink of the first heat dissipation zone and the third heat dissipation zone with the air is increased to accelerate the heat dissipation speed.
  • the height of the semi-solid die-cast heat sink of the first heat dissipation zone and the third heat dissipation zone is 50-150 mm, and the height of the semi-solid die-cast heat sink of the second heat dissipation zone is 120-180 mm, and the first heat dissipation zone and the third heat dissipation zone
  • the height ratio of the semi-solid die-cast fins to the second heat-dissipating zone is 1:1.5 to 1.7.
  • the height of the semi-solid die-cast heat sink of the first heat dissipation zone and the third heat dissipation zone is 100-120 mm, and the height of the semi-solid die-cast heat sink of the second heat dissipation zone is 150-180 mm, half of the condition.
  • the solid-state die-cast heat sink has a higher heat sink and a faster heat dissipation.
  • the height ratio of the semi-solid die-casting fins of the first heat dissipating region, the third heat dissipating region and the second heat dissipating region is 1:1.6 to 1.7
  • the second heat dissipating region located at the middle of the back surface of the heat dissipating casing can be The heat in the middle of the heat dissipation case is quickly released to the outside, avoiding the problem that the heat dissipation in the middle part of the conventional heat dissipation device is not timely.
  • the semi-solid die casting of the first heat dissipation zone, the third heat dissipation zone and the second heat dissipation zone may be selected.
  • the height ratio of the heat sink is 1:1.6, 1:1.65 or 1:1.7.
  • the interval between the first heat dissipation zone, the third heat dissipation zone and the second heat dissipation zone is 0.1 to 0.25 of the height of the semi-solid die-cast heat sink of the second heat dissipation zone.
  • the interval between the first heat dissipation zone, the third heat dissipation zone and the second heat dissipation zone is 0.1 to 0.15 of the height of the semi-solid die-cast heat sink of the second heat dissipation zone. Under this condition, the first heat dissipation zone and the first heat dissipation zone can be avoided.
  • the three heat dissipation zones block the two heat dissipation zones, affecting the heat dissipation of the second heat dissipation zone, and can fully utilize the heat sink of the back surface area of the heat dissipation casing.
  • the first heat dissipation zone and the third heat dissipation zone may be selected.
  • the interval between the second heat dissipating regions is 0.1, 0.11, 0.12, 0.14 or 0.15 of the height of the semi-solid die-cast fins of the second heat dissipating region.
  • each adjacent two semi-solid die-cast fins in the first heat dissipation zone and the third heat dissipation zone is 5-10 mm, preferably, each adjacent two semi-solid die-casting heat dissipation in the first heat dissipation zone and the third heat dissipation zone
  • the distance between the sheets is 8 to 10 mm. Under these conditions, each fin can be ensured to be in full contact with the air. For example, in practical applications, the distance can be selected from 8 mm, 9 mm or 10 mm.
  • the distance between each adjacent two semi-solid die-casting fins in the second heat dissipating zone is 3-8 mm, preferably, the distance is 5-8 mm. Under this condition, the number of fins in the second heat dissipating zone can be increased while avoiding The heat sink is too densely distributed to affect the heat dissipation caused by heat dissipation.
  • the distance between each adjacent two semi-solid die-cast heat sinks of the second heat dissipation zone may be selected to be 5 mm, 6 mm, 7 mm or 8 mm.
  • the semi-solid die-cast heat sink has a thickness of 0.3 to 1.5 mm.
  • the semi-solid die-cast heat sink has a thickness of 0.3 to 0.8 mm.
  • the semi-solid heat sink is thinner, heat dissipation is faster, and the heat dissipation shell quality is reduced. More lightweight.
  • the thickness of the semi-solid die-cast heat sink may be selected to be 0.3 mm, 0.5 mm, 0.65 mm, 0.7 mm or 0.8 mm.
  • the heat dissipating grooves have a depth of 3 to 10 mm and a width of 10 to 15 mm, preferably.
  • the depth of the heat sink is 5 to 7 mm.
  • the semi-solid die-cast heat sink is more firmly connected to the heat sink.
  • the width of the heat dissipating slot is 10 to 13 mm. Under this condition, the semi-solid die-casting fin can be stably fixed to the heat dissipating slot to prevent the semi-solid die-casting fin from sloshing.
  • the semi-solid die-casting heat sink is fixed in the heat dissipating groove by welding or dispensing, and preferably the semi-solid die-casting heat sink is fixed in the heat dissipating groove through the thermal adhesive glue, and the heat dissipation shell prepared under the condition has better heat conduction performance.
  • the welding fixture has higher requirements on the process, affects the yield and has potential safety hazards, which may cause personal injury to the staff.
  • the dispensing is safer and more reliable, and the process requirements are low. Even the inexperienced staff can operate successfully and the yield is high. .
  • the number of semi-solid die-casting fins is 20-80, and the ratio of the number of semi-solid die-cast fins of the first heat-dissipating zone to the second heat-dissipating zone is 1:1 to 3, and the semi-solid die-casting of the third heat-dissipating zone and the second heat-dissipating zone
  • the number of heat sinks is 1:1 to 3.
  • the number of semi-solid die-casting fins is 60-80, and under such conditions, the heat dissipation efficiency of the heat-dissipating casing is better.
  • the number of semi-solid die-casting fins can be selected to be 60, 65. Slices, 70, 75 or 80.
  • the ratio of the number of semi-solid die-cast heat sinks of the heat dissipation zone to the second heat dissipation zone is 1:1.5-2
  • the ratio of the number of semi-solid die-cast heat sinks of the third heat dissipation zone to the second heat dissipation zone is 1:1.5-2
  • the heat dissipation efficiency of each zone of the heat dissipation casing is basically balanced, and the temperature is uniform.
  • the semi-solid die-casting heat-dissipating casing is made of semi-solid die-casting aluminum alloy, and the semi-solid die-casting heat-dissipating casing under this condition is lighter in weight, higher in forming rate, thinner in wall thickness and better in heat dissipation efficiency.
  • the invention is not limited to a semi-solid die-cast aluminum alloy, and may also be one of other semi-solid die-cast alloy materials, such as semi-solid die-cast magnesium alloy, semi-solid die-cast copper alloy, semi-solid die-cast titanium alloy and other semi-solid die-cast alloy materials. Kind or above.
  • all the corners of the semi-solid die-cast heat-dissipating casing of the present invention have a rounded shape, and the semi-solid pressing of the heat-dissipating casing under this condition is safer in use to avoid damage to the user or other workpieces.
  • the semi-solid die-casting heat-dissipating casing of the invention has a semi-solid die-casting heat sink with a minimum thickness of 0.3 mm, lighter weight and better heat dissipation.
  • the semi-solid die-cast heat-dissipating casing of the present invention the distance between each adjacent two semi-solid die-casting fins in the first heat-dissipating zone and the third heat-dissipating zone is 5 to 10 mm, and the second heat-dissipating zone is adjacent to two and a half The distance between the solid die-cast fins is 3 to 8 mm, making full use of the cabinet space. Increase the number of heat sinks to improve heat dissipation efficiency.
  • the semi-solid die-casting heat-dissipating casing of the invention has no die-casting draft between adjacent semi-solid die-casting fins, and the height can be 50-180 mm, and the thermal conductivity is increased.
  • the semi-solid die-cast heat-dissipating casing of the present invention is die-casted from a semi-solid die-cast aluminum alloy, has high thermal conductivity, and has a thinner wall thickness, thereby reducing the weight of the heat-dissipating casing.
  • the semi-solid die-casting heat-dissipating casing of the invention, the high-conductivity semi-solid die-casting heat-dissipating shell body is combined with a multi-quantity, ultra-thin and ultra-high heat sink, has the advantages of light weight and high heat conductivity, and can be used as a communication housing. widely used.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)

Abstract

L'invention porte sur un boîtier de dissipation de chaleur moulé sous pression semi-solide, comprenant un corps de boîtier moulé sous pression semi-solide, plusieurs rainures de dent de dissipation de chaleur agencées sur une surface arrière du corps de boîtier moulé sous pression semi-solide, et des ailettes de dissipation de chaleur moulées sous pression semi-solides encastrées dans les rainures de dent de dissipation de chaleur. Les ailettes de dissipation de chaleur moulées sous pression semi-solides forment trois zones de dissipation de chaleur, qui sont respectivement une première zone de dissipation de chaleur et une troisième zone de dissipation de chaleur agencées symétriquement sur deux extrémités de la surface arrière du corps de boîtier moulé sous pression semi-solide, et une deuxième zone de dissipation de chaleur agencée entre la première zone de dissipation de chaleur et la troisième zone de dissipation de chaleur. La hauteur des ailettes de dissipation de chaleur moulées sous pression semi-solides de la première zone de dissipation de chaleur et de la troisième zone de dissipation de chaleur est de 50 à 150 millimètres, la hauteur des ailettes de dissipation de chaleur moulées sous pression semi-solides de la deuxième zone de dissipation de chaleur est de 120 à 180 millimètres, et le rapport de hauteur des ailettes de dissipation de chaleur moulées sous pression semi-solides des première et troisième zones de dissipation de chaleur et de la deuxième zone de dissipation de chaleur est de 1 : 1,5 à 1,7.
PCT/CN2019/076222 2018-12-14 2019-02-27 Boîtier de dissipation de chaleur moulé sous pression semi-solide WO2019165961A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201811531053.0A CN109588013B (zh) 2018-12-14 2018-12-14 一种半固态压铸散热机壳
CN201811531053.0 2018-12-14

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WO2019165961A1 true WO2019165961A1 (fr) 2019-09-06

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WO (1) WO2019165961A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101754644A (zh) * 2008-12-01 2010-06-23 华为技术有限公司 散热装置、散热器以及设备
US20130291564A1 (en) * 2011-01-13 2013-11-07 Sheetak, Inc. Thermoelectric cooling systems
CN204518258U (zh) * 2015-03-26 2015-07-29 苏州市联佳精密机械有限公司 4g通讯基站滤波散热组合壳体
CN107027259A (zh) * 2017-04-06 2017-08-08 珠海市润星泰电器有限公司 一种通讯散热壳体
CN107787147A (zh) * 2017-09-21 2018-03-09 珠海市润星泰电器有限公司 一种半固态通讯散热壳体及其生产方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6428636B2 (en) * 1999-07-26 2002-08-06 Alcan International, Ltd. Semi-solid concentration processing of metallic alloys
CN201607153U (zh) * 2010-04-18 2010-10-13 揭东钻宝科技电子有限公司 流体锻压式散热片
CN205960170U (zh) * 2016-08-17 2017-02-15 苏州市永创金属科技有限公司 一种滤波器复合型散热器

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101754644A (zh) * 2008-12-01 2010-06-23 华为技术有限公司 散热装置、散热器以及设备
US20130291564A1 (en) * 2011-01-13 2013-11-07 Sheetak, Inc. Thermoelectric cooling systems
CN204518258U (zh) * 2015-03-26 2015-07-29 苏州市联佳精密机械有限公司 4g通讯基站滤波散热组合壳体
CN107027259A (zh) * 2017-04-06 2017-08-08 珠海市润星泰电器有限公司 一种通讯散热壳体
CN107787147A (zh) * 2017-09-21 2018-03-09 珠海市润星泰电器有限公司 一种半固态通讯散热壳体及其生产方法

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CN109588013A (zh) 2019-04-05
CN109588013B (zh) 2020-03-03

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