| 摘要 |
PROBLEM TO BE SOLVED: To provide a non-aqueous electrolyte secondary battery high in capacity, improved in which the productivity by reducing the fraction defective in manufacturing the battery, with the inside of the battery effectively used. SOLUTION: A battery 1 is provided with a wound electrode body 10 in which a negative electrode 4 formed by coating a negative electrode active material on a strip-like negative electrode current collection body 2 and a positive electrode 7 formed by coating a positive electrode active material on a strip-like positive electrode current collection body 5 are arranged opposite to each other through a separator 8 in a winding manner. In the negative electrode 4, a negative electrode lead 17 is connected to an innermost circumferential part side of the wound electrode body 10, and in the positive electrode 7, a positive electrode lead 18 is connected to the innermost circumferential part side of the wound electrode body 10. The negative electrode lead 17 and the positive electrode lead 18 are arranged on the innermost circumferential part of the wound electrode body 10 with angular intervals of 10 deg. to 180 deg.. |
