With the increasingly strict application of electronic materials supervision, more and more companies pay more attention to the environmental protection of materials. Taking thermal interface materials as an example, especially non-silicone, non-polluting non-silicon thermal pads have gradually gained more in recent years. Concern, today's booming power battery pack manufacturers have also begun to use non-silicon thermal pads as power battery heat sink materials.
The author of a German power battery customer found us at last year's Electronics Fair in Munich, Germany, and through several samples, eventually chose the GLPOLY non-silicon thermal pad XK-PN30 in the power battery thermal management solution. Compared with the traditional silicone thermal pad, non-silicon gasket without silicon oil precipitation, no volatile, no pollution, will not affect the stability of the product. The following are some of the issues that the German power battery customer was concerned about when choosing a non-silicon thermal shim.
First, is the non-silicon thermal pad superior or inferior to the traditional silicone thermal pad in terms of thermal conductivity? The answer is certainly yes. GLPOLY recommends 3.0W/mK non-silicon thermal pad XK-PN30 to customers, thermal resistance is one-fourth lower than the same level of silicone thermal pad, only 0.2 °C in2/W, the same thermal conductivity achieved by the thermal conductivity Better results.
Second, the product's hardness. The German power battery customer sees that the hardness of the GLPOLY non-silicon thermal pad XK-PN30 is Shore 00 40-50, and it is doubtful whether the hardness is too hard. Customer's doubts are also justified, because the power battery pack is equipped with a continuous vibration environment, soft silicone thermal pad can play a buffering role, but it is not the softer the better, because it is not too soft, then Easy to assemble and poor in wear resistance. We requested the hardness of this non-silicon thermal pad to be Shore 00 20-30 according to the customer's requirements in Germany. However, after field assembly inspection, it was found that this hardness is too soft and inconvenient for construction. The Shore00 40-50 is the best for this type of application. hardness. In terms of wear resistance, GLPOLY non-silicon thermal pad has another solution, using glass fiber reinforcement, increasing tensile strength and wear resistance, and extending service life.
There is also a question about the application size. The size of the power battery silicone thermal pad required by the customers of the German power battery is 543x146mm, which is beyond the normal size. At present, the size of the silicone thermal pad manufactured by most manufacturers is based on the size of 400x200mm. The GLPOLY non-silicon thermal pad can provide more size options, from small to die-cut products up to 1000x310mm, which can meet the current The installation size of various battery packs.
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