锂电池绝缘端子的氧化封接

主要叙述了锂电池绝缘端子的氧化封接问题。当盖板与芯柱没有被氧化时，与玻璃熔封后绝缘端子的透气率和抗拉强度较差；相比之下，经预氧化处理的封接合金与玻璃封接的绝缘端子在透气率和抗拉强度上明显提高。试验对预氧化处理的集流极（即芯柱）进行了SEM与EDA观察，并对封接后的绝缘端子作了金相分析、透气率和抗拉强度的检测。结果表明：封接前对金属进行适当的预氧化处理，能提高绝缘端子的透气率和抗拉强度，当金属表面生成的过渡氧化膜厚度约为3 μm时，封接质量最好。

Oxidizing sealing at isulation terminal of lithium battery

The oxidizing sealing at the insulation terminal of lithium battery was discussed． The permeability and tensile strength of the insulation terminal melt-sealed with glass were increased remarkably when the surface of the house and pin was pre-oxidated． The preoxdated collectors （pins） were observed by SEM and EDA， the analysis of the metallography， and testing of the permeability and tensile strength for the sealed insulation terminal were conducted． The results show that the pre-oxidation treatment of house and pin before sealing can improve the permeability and tensile strength of insulation terminal， and that the sealing quality is best when the thickness of the transition oxide film at the metal surface reaches 3 μm．