| 摘要 |
To provide a non-aqueous electrolyte secondary battery less subject to impact by vibration, impact, etc., and has stable characteristics. The non-aqueous electrolyte secondary battery includes: a positive electrode part in which a positive electrode active material layer is formed on a positive collector; a positive electrode which is provided with a positive electrode lead tab and which is integrally formed with the positive collector so as to be connected to a periphery of the positive electrode part through a curved portion continuing therefrom; a negative electrode part in which a negative electrode active material layer is formed on a negative collector; a negative electrode which is provided with a negative electrode lead tab and which is integrally formed with the negative collector so as to be connected to a periphery of the negative electrode part through a curved portion continuing therefrom; and a separator which is interposed between the positive and negative electrodes. A positive electrode active material layer is formed at least on both sides of the positive electrode lead tab, and a projection portion obtained by vertically projecting the positive electrode part on the negative electrode part exists inward an outline of the negative electrode active material layer. |
