1. Field
Embodiments relate to a secondary battery.
2. Description of the Related Art
Unlike primary batteries, which are not chargeable, secondary batteries are chargeable and dischargeable. Low-capacity batteries, which may include a pack having one battery cell, may be used for small portable electronic products, e.g., cellular phones, plasma display panels (PDPs), notebook computers, cameras, etc. High-capacity batteries, which may include a pack having multiple connected battery cells, may be used as, e.g., power supplies for hybrid vehicles.
Secondary batteries may be fabricated as various types, e.g., a cylindrical type, a prismatic type, or the like. The secondary battery may include an electrode assembly in which a separator is interposed between a positive electrode and a negative electrode. The electrode assembly may be inserted into a case with an electrolyte, and a cap assembly having an electrode terminal may be coupled with the case.