CN102768998A - 大功率电子器件模组用基板 - Google Patents

大功率电子器件模组用基板 Download PDF

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CN102768998A
CN102768998A CN201110114669XA CN201110114669A CN102768998A CN 102768998 A CN102768998 A CN 102768998A CN 201110114669X A CN201110114669X A CN 201110114669XA CN 201110114669 A CN201110114669 A CN 201110114669A CN 102768998 A CN102768998 A CN 102768998A
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electronic device
heat conducting
conducting piece
power electronic
device module
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李盈贤
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YOUJIE PRECISION MACHINERY (SUZHOU) CO Ltd
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YOUJIE PRECISION MACHINERY (SUZHOU) CO Ltd
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Priority to CN201110114669XA priority Critical patent/CN102768998A/zh
Priority to PCT/CN2012/074967 priority patent/WO2012149891A1/zh
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • H01L33/64Heat extraction or cooling elements
    • H01L33/641Heat extraction or cooling elements characterized by the materials
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00Details of semiconductor or other solid state devices
    • H01L23/34Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
    • H01L23/36Selection of materials, or shaping, to facilitate cooling or heating, e.g. heatsinks
    • H01L23/373Cooling facilitated by selection of materials for the device or materials for thermal expansion adaptation, e.g. carbon
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/0001Technical content checked by a classifier
    • H01L2924/0002Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • H01L33/64Heat extraction or cooling elements
    • H01L33/642Heat extraction or cooling elements characterized by the shape

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Computer Hardware Design (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

本发明公开了一种大功率电子器件模组用基板,包括高导热的金属基板和石墨导热块,所述金属基板的一面固定安装所述大功率电子器件模组,所述金属基板的另一面固定连接所述的石墨导热块。在金属基板上固定连接重量轻,热传导系数高的石墨导热块,由于石墨的热导系数高达700-1000,使得整个基板导热性能好,重量轻及成本低。

Description

大功率电子器件模组用基板
技术领域
本发明涉及大功率电子产品领域,特别涉及一种大功率电子器件模组用基板。
背景技术
在电子工业中,大功率的通讯路板或大功率LED光源在正常工作下常常会产生大量的热,这些热量必须及时排出到环境中,否则将会引起电子原件温度升高,影响其正常工作,有时甚至损毁。
大功率的通讯路板或大功率LED光源封装时,为了降低成本,都会尽量减小承载电子器件的金属基板的面积和厚度,导致金属基板传热面积小。
为达到良好的散热,通常在金属基板上装设金属散热器,由于铝制散热器成本低,重量轻,所以应用较多,但是铝制散热器的热导系数约为130-140,热传导速度低,热能在靠近金属基板的附近累积严重,使电子器件的温度过高,严重影响其使用寿命,铜质散热器的热导系数为400-420,热传导有所提高,但是其重量大,成本高,难以大规模推广。
发明内容
为解决上述问题,本发明的目的在于提供一种导热性能好,重量轻及成本低的大功率电子器件模组用基板。
为达到上述目的,本发明的技术方案是:一种大功率电子器件模组用基板,包括高导热的金属基板和石墨导热块,所述金属基板的一面固定安装所述大功率电子器件模组,所述金属基板的另一面固定连接所述的石墨导热块。
优选的,所述所述石墨导热块的表面积大于所述金属基板的表面积。
优选的,还包括散热器,所述散热器设有凹槽,所述石墨导热块嵌设于所述凹槽中。
优选的,所述石墨导热块为扁平块状、横置的长方体、立方体或竖置的长方体。
优选的,所述石墨导热块设有鳍片,所述凹槽设有与所述鳍片匹配的鳍片槽,所述石墨导热块和所述鳍片分别嵌设于所述凹槽和鳍片槽中。 
采用本技术方案的有益效果是:在金属基板上固定连接重量轻,热传导系数高的石墨导热块,由于石墨的热导系数高达700-1000,使得整个基板导热性能好,重量轻及成本低。
附图说明
图1是本发明一种大功率电子器件模组用基板实施例1的示意图;
图2是本发明一种大功率电子器件模组用基板实施例2的示意图;
图3是本发明一种大功率电子器件模组用基板实施例2分拆后的示意图。
图中数字和字母所表示的相应部件名称:
1.金属基板   2.石墨导热块  21.鳍片    3.散热器   31.凹槽  32.鳍片凹槽  4.LED芯片。
具体实施方式
下面结合附图和具体实施方式对本发明作进一步详细的说明。
实施例1,
如图1所示,一种大功率电子器件模组用基板,包括高导热的金属基板1和石墨导热块2,所述金属基板1的一面固定安装所述大功率电子器件模组如LED芯片4,所述金属基板1的另一面固定连接所述的石墨导热块2。
所述所述石墨导热块2的表面积大于所述金属基板1的表面积。
还包括散热器3,所述散热器设有凹槽31,所述石墨导热块2嵌设于所述凹槽31中。
本实施例中,所述石墨导热块2为扁平块状,也可以为横置的长方体、立方体或竖置的长方体。
本实施例的工作原理是,LED芯片4工作时产生的大量的热能传导到金属基板1上,再由金属基板1向石墨导热块2传递,由于石墨导热块2的热导系数高达700到1000,因此热能很快传递到石墨导热块2中,由于石墨导热块2比较易碎,不利于工业应用,因此在石墨导热块2外面再嵌套安装一个金属散热器3,一方面起到保护石墨导热块2的作用,另一方面,由于石墨导热块2的表面积很大,和金属散热器3的接触面积也很大,因此热能传导效率大大提高,克服了金属基板1和金属散热器3直接接触产生的热滞留现象,大大提高了散热效率。
采用本技术方案的有益效果是:在金属基板上固定连接重量轻,热传导系数高的石墨导热块,由于石墨的热导系数高达700-1000,使得整个基板导热性能好,重量轻及成本低。
实施例2,
如图2和图3所示,所述石墨导热块2设有鳍片21,所述凹槽31设有与所述鳍片21匹配的鳍片槽32,所述石墨导热块2和所述鳍片21分别嵌设于所述凹槽31和鳍片槽32中。本实施例增加了石墨导热块2和金属散热器3的接触面积,进一步提高热传导效率。 
以上所述的仅是本发明的优选实施方式,应当指出,对于本领域的普通技术人员来说,在不脱离本发明创造构思的前提下,还可以做出若干变形和改进,这些都属于本发明的保护范围。

Claims (5)

1.一种大功率电子器件模组用基板,其特征在于,包括高导热的金属基板和石墨导热块,所述金属基板的一面固定安装所述大功率电子器件模组,所述金属基板的另一面固定连接所述的石墨导热块。
2.根据权利要求1所述的大功率电子器件模组用基板,其特征在于,所述所述石墨导热块的表面积大于所述金属基板的表面积。
3.根据权利要求1或2所述的大功率电子器件模组用基板,其特征在于,还包括散热器,所述散热器设有凹槽,所述石墨导热块嵌设于所述凹槽中。
4.根据权利要求3所述的大功率电子器件模组用基板,其特征在于,所述石墨导热块为扁平块状、横置的长方体、立方体或竖置的长方体。
5.根据权利要求3所述的大功率电子器件模组用基板,其特征在于,所述石墨导热块设有鳍片,所述凹槽设有与所述鳍片匹配的鳍片槽,所述石墨导热块和所述鳍片分别嵌设于所述凹槽和鳍片槽中。
CN201110114669XA 2011-05-05 2011-05-05 大功率电子器件模组用基板 Pending CN102768998A (zh)

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Publication number Priority date Publication date Assignee Title
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