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Composite watchband touch finger heat conduction device


Release time:

2022-06-02

The heat transfer device of the composite watchband contact type utility model is installed between two solid surfaces. The metal contact relies on its own elasticity to be in close contact with the upper and lower solid surfaces. Many metal contacts are arranged in parallel, which increases the number of heat conduction paths on both sides. The solid surface greatly reduces the contact thermal resistance of the entire solid surface. At the same time, the elastic metal contact has greater compressibility, which can meet the requirements of the flatness of the solid surface. The composite watchband contact finger can be applied to the multi-step structure and the peripheral contact structure.

Composite watchband touch finger heat conduction device

The heat transfer device of the composite watchband contact type utility model is installed between two solid surfaces. The metal contact relies on its own elasticity to be in close contact with the upper and lower solid surfaces. Many metal contacts are arranged in parallel, which increases the number of heat conduction paths on both sides. The solid surface greatly reduces the contact thermal resistance of the entire solid surface. At the same time, the elastic metal contact has greater compressibility, which can meet the requirements of the flatness of the solid surface. The composite watchband contact finger can be applied to the multi-step structure and the peripheral contact structure. The structure of the heat transfer device is a purely mechanical structure, which avoids the service life and maintenance problems caused by the addition of thermal pads or thermal adhesives, and has the characteristics of long life and convenient maintenance.

复合表带触指

Composite strap touch guide thermal device


Technical Field

Composite watchband contact finger utility model The composite watchband contact finger type relates to a heat conducting device, especially a heat conducting device whose structure is similar to the metal contact sheet of the watchband contact finger type.


Background technology

Thermal contact resistance is an important parameter in the design of electronic devices, such as thermoelectric devices, superconducting thin films, semiconductor thin films, and the design of high-power chips in microelectronic packaging.


Zhang Ping's "Research Progress of Interface Contact Thermal Resistance" explains the mechanism of contact thermal resistance; between solid and solid interfaces, due to surface contact pressure, interface materials with different roughness, surface mechanical treatment, elastic deformation and other factors on thermal contact The influence of thermal resistance, it is impossible to achieve complete sealing between solid surfaces, but there are many contact points; the traditional view is that the actual contact area of the two contact surfaces is only 0.01 to 0.1 percent of the nominal contact area. Even if the contact pressure of the two interfaces reaches 10MPa, the actual contact area only accounts for 1% ~ 2% of the nominal contact area. The heat transfer between solid surfaces is composed of heat conduction at the contact point, heat conduction of the cavity air layer surrounded by the two surfaces, and radiative heat exchange between the surfaces. Cavity contact causes thermal flow to contract, thereby generating contact heat. Defiance. The main measures to reduce contact thermal resistance include increasing contact pressure, reducing surface roughness, increasing surface flatness and other measures, as well as adding interface materials at the contact surface, surface treatment technology and other methods. Interface materials are widely used in the field of electronic heat dissipation. However, the performance of these polymer interface materials can severely degrade with increasing heat source temperature and exposure time. The surface treatment technology is to coat softer pins, copper, inlays, graphite and other materials on the metal substrate with higher hardness.


Utility model content

In view of the above problems, the new type of composite watchband touch finger composite watchband provides a method to reduce the contact thermal resistance between the solid and the solid surface by increasing the number of contacts between the solid and the solid surface, and improve the conductivity between the solid surface. Coefficient, while solving the problem of other interface materials. Wristband finger heat transfer device that is difficult to maintain and unreliable. The new type of composite strap contact finger is especially aimed at modules that need to be frequently disassembled and rely on the heat conduction of the contact surfaces on both sides.


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