| 摘要 |
PROBLEM TO BE SOLVED: To provide a lithium rechargeable battery excellent in reliability by having a coil-type an electrode body and suppressing dispersion of each characteristic to low level and preventing degradation of characteristics caused by irregular winding gap, etc., at use while keeping the internal resistance lower. SOLUTION: A lithium secondary battery comprises a noaqueous electrolyte and an electrode body 1 obtained by winding positive and negative electrode plates 2, 3 formed by coating an electrode active material layer on each collector-substrate surface, via a separator 4. Moreover, an initial elastic strain of an electrode body 1 when a compressive load is applied in the radius direction of the electrode body 1 is made 2% or less. |
