Patent ID: 9666903
Date: 2017-05-30
CPC Classifications: H01M,Y02E,Y02P

Claim:
1. A lithium-ion secondary battery having a cylindrical shape and comprising: a bottom-closed cylindrical battery case having an opening portion; a wound-type electrode assembly and a non-aqueous electrolyte housed in the battery case; and a sealing plate sealing the opening portion, the wound-type electrode assembly including: a positive electrode; a negative electrode; and a separator interposed between the positive electrode and the negative electrode, and the lithium-ion secondary battery having: an outer diameter R of 3 to 6.5 mm and a height H of 15 to 65 mm; an amount of the non-aqueous electrolyte per discharge capacity of 1 mAh of 1.7 to 2.8 μL; a packing ratio of 71 to 85%, and a capacity density per volume of 60 to 110 mAh/cm