| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a secondary battery capable of improving the corrosion resistance and the joining of electrode units.SOLUTION: There is provided a secondary battery including: at least one battery cell including an electrode assembly, a case accommodating the electrode assembly, and a cap plate sealing the case; an electrode unit formed to penetrate through the cap plate and electrically coupled to the electrode assembly; and a seal molding interposed between the electrode unit and the cap plate. The electrode unit includes: a current collecting member disposed adjacent to the electrode assembly; and an electrode terminal extended on the cap plate, from the current collecting member. The current collecting member and the electrode terminal are formed of metals different to each other, and the seal molding surrounds a joining portion where current collecting member and the electrode terminal are joined.</p> |
