Heat sink module and manufacturing method thereof

• Main Authors: HONG JUNYANG, TAN LIGUANG
• Format: Patent
• Language: Chinese; English
• Published: 06.03.2018
• Subjects: CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; CASTING; CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS; PERFORMING OPERATIONS; POWDER METALLURGY; PRINTED CIRCUITS; TRANSPORTING

In a heat sink module and a manufacturing method thereof, the method includes steps of: forming a heat dissipation fin set by aluminum extrusion process, wherein the heat dissipation fin set includesa plate, a plurality of fins extending from one side of the plate and being arranged spaced apart from one another, and a joint portion formed on the other side of the plate; placing the plate in a mold; injecting molten metal into the mold; forming a base by die-casting of the molten metal. The plate and the joint portion are wrapped by the base. The joint portion forms a connection structure including a bump and a notch fitted with the bump, so as to connect and fix the base and the heat dissipation fin set. The heat sink module has the strengthened connection structure and the fins with a superior aspect ratio. 本发明涉及散热模块及其制造方法，制造方法包含以下步骤：以铝挤型工艺成型散热鳍片组，散热鳍片组包含板体、自板体侧表面延伸且间隔排列的多个鳍片及形成于板体另侧表面的接合部；将板体置于模具；将熔融金属材料注入模具；以压铸工艺将熔融金属材料成型为基座；其中基座包覆板体及接合部，接合部成型有接合结构且包含凸块及相配合的凹槽，从而使基座及散热鳍片组接合固定。散热模块具有高强度的接合结构，且成型出具较佳高宽比的散热鳍