用于锂电池包装的铝塑膜印刷封装新工艺

目的研发一种铝塑膜印刷封装的新工艺,提高锂电池包装的生产效率。方法通过对铝塑膜表面先涂布、再印刷、后封装的工艺替代行业内铝塑膜包装锂电池的传统工艺,测试新工艺条件下铝塑印刷膜的耐化学性、耐磨性、附着力及光泽度等指标。结果采用新工艺后,不仅可以拓宽印刷种类,提升生产效率,而且能够实现高精度印刷作业,提高铝塑膜的印刷质量。试验表明,该工艺条件下的铝塑印刷膜耐化学性和耐磨性优良,附着牢度可达100%,平均光泽度为8.4。结论新工艺相比传统工艺具有较强的先进性,可适用于手机锂电池的铝塑膜印刷封装作业。

Transient Thermal Management Comparison of a Microprocessor Using PCMs in Various Configurations

There has been a strong interest in the use of Phase Change Materials (PCMs) for the transient thermal abatement of high powered microprocessor.This paper presents a set of transient computational analysis for selected IC packages with the purpose of calibrating the merits of PCM in different configurations.The transient analysis of high powered microprocessors with heat sinks was performed as a benchmark for comparison with the same microprocessors fitted with PCM in the following configurations:a) PCM imbedded into the finned region of the heat sink,b) PCM mounted between the microprocessor and heat sink,c) sealed PCM underfill to the microprocessor and d) PCM fitted to the underside of the printed circuit board directly beneath the microprocessor.The analysis was performed using a commercial CFD tool together with an approximation to the phase change mechanism using the slope method.Results indicate the merit of each configuration.